commit e65e9cc623a539e158050a10fdfafc4692efe928
Author: Sergio <sergiovelasquezzeballos@gmail.com>
Date:   Thu Jun 4 04:23:42 2026 +0000

    feat: llimphi standalone — framework UI soberano extraído del monorepo
    
    Motor gráfico Llimphi como workspace independiente: bucle Elm
    (input→update→view→layout→raster→present) sobre wgpu+vello+taffy+parley.
    Núcleo (hal/raster/layout/text/ui/theme/surface/motion/icons) + ~40 widgets
    + módulos, sin dependencias al resto del monorepo. cargo check --workspace
    pasa (64 crates). Puerta de entrada: cargo run -p llimphi-ui --example counter.
    
    Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+/target
+**/*.rs.bk
+*.pdb
diff --git a/COMPUTO-FUERA-DEL-HILO-UI.md b/COMPUTO-FUERA-DEL-HILO-UI.md
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+# Cómputo pesado fuera del hilo de UI — regla dura de Llimphi
+
+> **PRIORIDAD URGENTE.** Patrón a aplicar a **todas** las apps Llimphi.
+> Origen: el "Not Responding" de cosmos (2026-05-31). Implementación de
+> referencia: `01_yachay/cosmos/cosmos-app-llimphi` (commits `added8b3`,
+> `9f221983`).
+
+## La regla
+
+Ningún `App::update`, `App::init` ni handler (`on_key`/`on_wheel`/…) debe
+ejecutar trabajo pesado **síncrono**. Bloquea el hilo de UI → la ventana no
+repinta, no responde, no cierra → "Not Responding". Es el antipatrón win32 de
+trabajo pesado en el message loop.
+
+Crítico: en winit, **`App::init()` corre dentro de `resumed`, DESPUÉS de crear
+la ventana**. Un cómputo pesado en init congela la ventana ya visible.
+
+Se nota brutal en **debug** (sin optimizar, 10–50× más lento; además debug
+*panica* en overflow donde release *wrappea*). Pero la mala arquitectura está
+igual en release: una carta pesada, una máquina lenta o un dataset grande la
+exponen.
+
+"Pesado" = efemérides/simulación, layout de árboles grandes, IO de disco/red,
+parse, embeddings, compresión… cualquier cosa que pueda pasar de ~unos ms.
+
+## El patrón (mover a un worker)
+
+```rust
+// 1) Mensaje de resultado: u64 = generación; Arc<T> porque Msg: Clone.
+enum Msg { /* … */ XComputed(u64, std::sync::Arc<Resultado>) }
+
+// 2) En el Model: el resultado es Option (None = "calculando…"),
+//    más un flag dirty y un contador de generación.
+struct Model { x: Option<Resultado>, x_dirty: bool, x_gen: u64, /* … */ }
+
+// 3) recompute_x sólo marca dirty (los helpers no tienen el Handle).
+fn recompute_x(m: &mut Model) { m.x_dirty = true; }
+
+// 4) Al FINAL de update() (que SÍ tiene el Handle): si está sucio, bumpear
+//    generación, clonar los inputs y despachar a un worker.
+if m.x_dirty {
+    m.x_dirty = false;
+    m.x_gen = m.x_gen.wrapping_add(1);
+    let gen = m.x_gen;
+    let input = m.input.clone();              // sólo lo que el worker necesita
+    handle.spawn(move || Msg::XComputed(gen, std::sync::Arc::new(compute(&input))));
+}
+
+// 5) Arm del resultado: aplicar SÓLO si la generación sigue vigente
+//    (un recálculo posterior ya dejó viejo a este). try_unwrap evita copiar
+//    (el Arc llega con refcount 1 porque el Msg no se clona en el camino).
+Msg::XComputed(gen, x) => {
+    if gen == m.x_gen {
+        m.x = Some(std::sync::Arc::try_unwrap(x).unwrap_or_else(|a| (*a).clone()));
+    }
+}
+
+// 6) En init: arrancar con None y despachar el primer cómputo a un worker
+//    (init tiene el Handle). La vista pinta "calculando…" mientras tanto.
+
+// 7) En la vista: match &model.x { Some(v) => panel(v), None => calculando() }
+```
+
+Notas:
+- El campo `Option<T>` exige `T: Clone` (para el fallback de `try_unwrap`).
+- La **generación** evita que un resultado tardío pise a uno más nuevo
+  (drags, toggles rápidos). Imprescindible si el recálculo puede dispararse
+  seguido.
+- Inputs al worker deben ser `Send` (clonar `Chart`, `Vec`, etc.).
+- No hace falta async-ear lo barato: en cosmos el render de la carta quedó
+  síncrono (con el solver acotado son ms); sólo el astro (144 muestras × 10
+  cuerpos) fue a worker.
+
+## Soluciones colaterales de la misma cacería (ya aplicadas, no revertir)
+
+- **Preferir Vulkan en `llimphi-hal`** (`Hal::new`, commit `9f221983`): pedir
+  adapter con `Backends::PRIMARY` y caer a `all()` (incluye GL) sólo si no hay
+  PRIMARY. El backend **GL de Mesa sobre Wayland segfaultea en el teardown**
+  (`eglTerminate → wl_proxy_marshal` sobre conexión muerta, exit 139 sin
+  panic). Es infra compartida → ya beneficia a todas las apps. No volver a
+  `InstanceDescriptor::default()`.
+- **Acotar solvers iterativos** (`cosmos-ephemeris`, Kepler, commit `added8b3`):
+  un `loop {}` con corte `dl.abs() < 1e-15` (pegado al epsilon de f64) entra en
+  ciclo límite y NO converge para ciertos inputs → loop infinito. Release
+  fusiona flops (FMA) y converge; debug no. **Todo solver Newton/bisección
+  lleva cota dura** (`for _ in 0..N`), no `loop {}`.
+
+## Cómo diagnosticar (sin ptrace; `ptrace_scope=1` bloquea gdb a no-hijos)
+
+- `/proc/$PID/wchan` del hilo principal: `do_epoll_wait` = ocioso sano;
+  `__futex_wait` = deadlock de lock; estado `R` sostenido = spin o cómputo en
+  el hilo de UI; `dma_fence`/`drm` = GPU; `poll` sobre fd `wayland-0` = frame
+  callback.
+- gdb **como PADRE** sí puede (lanzar la app *bajo* gdb): backtrace del spin/
+  segfault. La pila de wgpu revela el backend (`wgpu_hal::gles` vs vulkan).
+- Trazar con un `eprintln` ENTER/DONE para distinguir "una llamada que no
+  termina" (loop infinito) de "se llama repetidas veces" (storm de dispatch).
+- En debug arranca como `cargo run` (binario `target/debug`); el release puede
+  ocultar el bug (float/overflow distintos).
+
+## Checklist — auditar y aplicar a cada app
+
+Buscar trabajo pesado en `init`/`update`/handlers y moverlo a worker:
+
+- [x] `01_yachay/cosmos/cosmos-app-llimphi` (referencia)
+- [ ] `00_unanchay/pluma/pluma-app`
+- [ ] `00_unanchay/pluma/pluma-editor-llimphi`
+- [ ] `00_unanchay/pluma/pluma-notebook-llimphi`
+- [ ] `00_unanchay/puriy/puriy-llimphi`  (motor JS/render — alto riesgo)
+- [ ] `00_unanchay/khipu/khipu-app`
+- [ ] `00_unanchay/chaka/chaka-app-llimphi`
+- [ ] `01_yachay/dominium/dominium-app-llimphi`
+- [ ] `01_yachay/nakui/nakui-ui-llimphi`, `nakui-sheet-llimphi`, `nakui-explorer-llimphi`
+- [ ] `01_yachay/iniy/iniy-explorer-llimphi`
+- [ ] `01_yachay/tinkuy/tinkuy-llimphi`  (simulación — alto riesgo)
+- [ ] `02_ruway/ayni/ayni-llimphi`
+- [ ] `02_ruway/chasqui/chasqui-explorer-llimphi`, `chasqui-broker-explorer-llimphi`
+- [ ] `02_ruway/nada`, `02_ruway/mirada/*-llimphi`
+- [ ] `pineal-*` (charting — revisar si el cómputo de series corre en update)
+
+(Lista de partida: `grep -rl 'llimphi-ui' --include=Cargo.toml`. Los widgets/
+modules/demos rara vez hacen cómputo pesado; foco en las apps de dominio.)
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..a40cbb4
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,441 @@
+# Cargo.toml raíz STANDALONE de Llimphi — dry-run de extracción.
+# Generado desde la raíz de gioser quitando el prefijo 02_ruway/llimphi/ a los
+# path-deps internos. Excluye los 3 crates acoplados al resto del workspace
+# (menubar→app-bus, shuma-term→shuma-exec, plugin-host→card-core) y los demos
+# gallery que los agregan, más android (target propio).
+[workspace]
+resolver = "2"
+members = [
+    "llimphi-hal", "llimphi-raster", "llimphi-layout", "llimphi-text",
+    "llimphi-ui", "llimphi-theme", "llimphi-surface", "llimphi-motion",
+    "llimphi-icons", "llimphi-compositor", "llimphi-workspace",
+    "widgets/*", "modules/*",
+]
+exclude = [
+    "android",
+    "llimphi-gallery", "llimphi-gpu-bench",
+    "widgets/gallery", "widgets/menubar",
+    "modules/shuma-term", "modules/plugin-host",
+]
+
+[workspace.package]
+version = "0.1.0"
+edition = "2021"
+rust-version = "1.80"
+license = "MIT"
+authors = ["Sergio <gerencia@jlsoltech.com>"]
+publish = false
+repository = "https://gitea.gioser.net/sergio/llimphi"
+
+[workspace.dependencies]
+# === Registro de apps / menú global ===
+app-bus = { path = "shared/app-bus" }
+# === Serialización ===
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+lsp-types = "0.97"
+serde-big-array = "0.5"
+postcard = { version = "1", features = ["use-std"] }
+toml = "0.8"
+ron = "0.8"
+bincode = "1"
+base64 = "0.22"
+
+# === Errores ===
+thiserror = "2"           # bump uniforme; arje (era 1) puede requerir ajustes menores
+anyhow = "1"
+
+# === Async ===
+tokio = { version = "1", features = ["full"] }
+tokio-util = { version = "0.7", features = ["compat"] }
+async-trait = "0.1"
+futures = "0.3"
+
+# === Observabilidad ===
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter", "fmt"] }
+
+# === Linux primitives (arje) ===
+nix = { version = "0.29", features = ["signal", "process", "sched", "mount", "fs", "socket", "net", "user"] }
+libc = "0.2"
+
+# === IDs / Hash / Crypto ===
+ulid = { version = "1", features = ["serde"] }
+uuid = { version = "1", features = ["v4", "rng-getrandom"] }
+sha2 = "0.10"
+blake3 = "1.5"
+ed25519-dalek = "2"
+aes-gcm = "0.10"
+chacha20poly1305 = "0.10"
+argon2 = "0.5"
+rand = "0.8"
+
+# === WASM (arje) ===
+# wasmi 1.0: unifica la versión con renaser (su kernel ya corre 1.0), para
+# que el ABI WASM del host sea idéntico en Linux y en bare-metal.
+wasmi = "1.0"
+wat = "1"
+
+# === Storage / DB ===
+sled = "0.34"
+rusqlite = { version = "0.31", features = ["bundled", "blob"] }
+
+# === Ingesta de documentos (iniy-ingest: PDF / EPUB) ===
+pdf-extract = "0.7"
+epub = "2.1"
+
+# === Bulk import Wikipedia (iniy-wiki dump) ===
+bzip2 = "0.4"
+
+# === Compresión (minga multi-bundle) ===
+zstd = "0.13"
+
+# === HTTP server (iniy-server) ===
+axum = "0.7"
+tower = "0.5"
+
+# === ANN sobre embeddings (iniy nli --ann) ===
+instant-distance = "0.6"
+
+# === P2P (minga) ===
+libp2p = { version = "0.56", features = ["tokio", "tcp", "noise", "yamux", "macros", "kad", "identify", "relay", "dcutr", "autonat", "mdns"] }
+libp2p-stream = "=0.4.0-alpha"
+libp2p-allow-block-list = "0.6"
+
+# === SSH (ssh, sandokan RemoteEngine, matilda) ===
+russh = "0.54"
+
+# === Math determinista cross-platform (dominium) ===
+libm = "0.2"
+
+# === SMF (takiy-midi) ===
+# midly: parser/emitter SMF tipo 0/1, no_std-friendly, sin allocs en hot path.
+midly = "0.5"
+
+# === Code parsing (minga) ===
+arboard = "3"
+ropey = "1.6"
+tree-sitter = "0.24"
+tree-sitter-rust = "0.23"
+tree-sitter-python = "0.23"
+tree-sitter-typescript = "0.23"
+tree-sitter-javascript = "0.23"
+tree-sitter-go = "0.23"
+
+# === FS notify ===
+notify = "6.1"
+
+# === Grafos (iniy, nakui-core ya lo usa directo en 0.6) ===
+petgraph = "0.6"
+
+# === Image decoding (nahual-image-viewer-llimphi) ===
+# default-features = false: nos quedamos con PNG + JPEG + WebP (lossless).
+# tullpu-render exporta a las tres; AVIF/TIFF/… los habilitamos si una app
+# los pide específicamente.
+image = { version = "0.25", default-features = false, features = ["png", "jpeg", "webp"] }
+
+# === FUSE (minga-vfs) ===
+# default-features = false: prescinde de pkg-config/libfuse-dev en build.
+# El montaje pasa a ser Rust puro (vía el helper `fusermount3` en runtime).
+fuser = { version = "0.15", default-features = false }
+
+# === CLI / auth (minga) ===
+clap = { version = "4", features = ["derive"] }
+rpassword = "7"
+
+# === PAM (auth-core) ===
+pam = "0.8"
+
+# === D-Bus (arje compat) ===
+zbus = { version = "4", default-features = false, features = ["tokio"] }
+
+# === Tests ===
+tempfile = "3"
+
+# === Llimphi (motor gráfico soberano) ===
+# wgpu sobre Vulkan/Metal/DX12, winit para ventana en dev Linux.
+# raw-window-handle 0.6 alinea winit 0.30 con wgpu 24.
+# vello 0.5 = rasterizador vectorial sobre wgpu 24.
+# taffy 0.9 = motor Flexbox/Grid puro Rust (ya pulled por transitivos, lo alineamos).
+# parley 0.2 = shaping/layout de texto compatible con peniko 0.4 (que vello 0.5 expone).
+wgpu = "24"
+winit = "0.30"
+raw-window-handle = "0.6"
+pollster = "0.4"
+vello = "0.5"
+taffy = "0.9"
+# parley = shaping completo (bidi, ligatures, fallback CJK/emoji vía fontique, line break).
+parley = "0.4"
+# Bucle Elm (input→update→view→layout→raster→present). Lo consumen las apps.
+llimphi-ui = { path = "llimphi-ui" }
+# Paleta semántica compartida por las apps y los widgets.
+llimphi-theme = { path = "llimphi-theme" }
+# Tweens y helpers de animación sobre el bucle Elm.
+llimphi-motion = { path = "llimphi-motion" }
+# Iconos vectoriales (BezPath en grid 24×24) compartidos por todas las apps.
+llimphi-icons = { path = "llimphi-icons" }
+# Widgets reusables sobre llimphi-ui — uno por crate.
+llimphi-widget-app-header = { path = "widgets/app-header" }
+llimphi-widget-banner = { path = "widgets/banner" }
+llimphi-widget-button = { path = "widgets/button" }
+llimphi-widget-card = { path = "widgets/card" }
+llimphi-clipboard = { path = "widgets/clipboard" }
+llimphi-widget-context-menu = { path = "widgets/context-menu" }
+llimphi-widget-edit-menu = { path = "widgets/edit-menu" }
+llimphi-widget-menubar = { path = "widgets/menubar" }
+llimphi-widget-list = { path = "widgets/list" }
+llimphi-widget-grid = { path = "widgets/grid" }
+llimphi-widget-slider = { path = "widgets/slider" }
+llimphi-widget-scroll = { path = "widgets/scroll" }
+llimphi-widget-splitter = { path = "widgets/splitter" }
+llimphi-widget-stat-card = { path = "widgets/stat-card" }
+llimphi-widget-tabs = { path = "widgets/tabs" }
+llimphi-module-command-palette = { path = "modules/command-palette" }
+llimphi-module-diff-viewer = { path = "modules/diff-viewer" }
+llimphi-module-fif = { path = "modules/fif" }
+llimphi-module-file-picker = { path = "modules/file-picker" }
+llimphi-module-bookmarks = { path = "modules/bookmarks" }
+llimphi-module-mini-map = { path = "modules/mini-map" }
+llimphi-module-shuma-term = { path = "modules/shuma-term" }
+llimphi-module-symbol-outline = { path = "modules/symbol-outline" }
+llimphi-plugin-host = { path = "modules/plugin-host" }
+llimphi-widget-theme-switcher = { path = "widgets/theme-switcher" }
+llimphi-widget-text-area = { path = "widgets/text-area" }
+llimphi-widget-text-editor-core = { path = "widgets/text-editor-core" }
+llimphi-widget-text-editor = { path = "widgets/text-editor" }
+llimphi-widget-text-editor-lsp = { path = "widgets/text-editor-lsp" }
+llimphi-widget-text-input = { path = "widgets/text-input" }
+llimphi-widget-tiled = { path = "widgets/tiled" }
+llimphi-widget-nodegraph = { path = "widgets/nodegraph" }
+llimphi-widget-tree = { path = "widgets/tree" }
+llimphi-widget-navigator = { path = "widgets/navigator" }
+# Sello vectorial wawa (rombo + W implícita + Merkle Core).
+llimphi-widget-wawa-mark = { path = "widgets/wawa-mark" }
+# Widgets de elegancia transversal (tooltip, spinner, progress, toast,
+# modal, empty, status-bar, shortcuts-help, splash).
+llimphi-widget-tooltip = { path = "widgets/tooltip" }
+llimphi-widget-spinner = { path = "widgets/spinner" }
+llimphi-widget-progress = { path = "widgets/progress" }
+llimphi-widget-toast = { path = "widgets/toast" }
+llimphi-widget-modal = { path = "widgets/modal" }
+llimphi-widget-empty = { path = "widgets/empty" }
+llimphi-widget-status-bar = { path = "widgets/status-bar" }
+llimphi-widget-shortcuts-help = { path = "widgets/shortcuts-help" }
+llimphi-widget-timeline = { path = "widgets/timeline" }
+llimphi-widget-splash = { path = "widgets/splash" }
+# Controles de formulario y signaling (switch, segmented, breadcrumb,
+# badge, avatar, skeleton, field).
+llimphi-widget-switch = { path = "widgets/switch" }
+llimphi-widget-segmented = { path = "widgets/segmented" }
+llimphi-widget-dock-rail = { path = "widgets/dock-rail" }
+llimphi-widget-breadcrumb = { path = "widgets/breadcrumb" }
+llimphi-widget-badge = { path = "widgets/badge" }
+llimphi-widget-avatar = { path = "widgets/avatar" }
+llimphi-widget-skeleton = { path = "widgets/skeleton" }
+llimphi-widget-field = { path = "widgets/field" }
+# Firma visual transversal (gradient sutil + hairline accent).
+llimphi-widget-panel = { path = "widgets/panel" }
+llimphi-widget-panes = { path = "widgets/panes" }
+llimphi-workspace = { path = "llimphi-workspace" }
+# Abstracción Selector — host (paths) + wawa (khipus).
+llimphi-module-selector = { path = "modules/selector" }
+
+# === Filesystem helpers ===
+directories = "5"
+
+# === Diff line-based (llimphi-module-diff-viewer) ===
+# `similar` es la crate de facto: implementa Myers + Patience + LCS,
+# expone `TextDiff` con ChangeTag por línea (Equal/Insert/Delete),
+# zero deps fuera de std. La 2.x es estable hace años.
+similar = "2"
+
+# === Fuzzy matching (shuma-history) ===
+# nucleo-matcher = mismo matcher que helix-editor: rápido, Unicode-correct,
+# bonus por prefijos, ranking estable. La versión 0.3 expone el API simple
+# que necesitamos (Matcher + Pattern + score).
+nucleo-matcher = "0.3"
+
+# === Transporte autenticado (shuma-link) ===
+# snow = framework Noise pure-rust. Lo usamos en modo Noise_XK (cliente
+# conoce la pubkey del servidor, server descubre la del cliente y la
+# valida contra una allowlist). ChaCha20-Poly1305 + X25519 + BLAKE2s.
+# La versión 0.9 viene pinneada por libp2p, así nos alineamos.
+snow = "0.9"
+hex = "0.4"
+
+# === PTY + emulador de terminal (shuma-exec, módulos REPL) ===
+# portable-pty aloja un PTY cross-platform; lo usamos para los
+# comandos TUI tipo vim/htop/less que necesitan un terminal de verdad.
+# vt100 parsea la secuencia de bytes que el PTY emite (ANSI + cursor
+# movement + erase + screen state) y mantiene un buffer de pantalla
+# renderizable como grid.
+portable-pty = "0.9"
+vt100 = "0.16"
+
+# === WASM web (gioser) ===
+wasm-bindgen = "0.2"
+wasm-bindgen-futures = "0.4"
+js-sys = "0.3"
+web-sys = "0.3"
+glam = "0.30"
+
+# === Markdown (pluma) ===
+pulldown-cmark = { version = "0.12", default-features = false, features = ["html"] }
+
+# === Archivos comprimidos (nahual archive viewer) ===
+# Sólo listamos el directorio central (nombres/tamaños); no descomprimimos,
+# por eso default-features=false alcanza para ZIP. Para tar.gz sí
+# descomprimimos en streaming con flate2 (ya declarado arriba), saltando
+# los datos de cada entrada — sólo leemos headers.
+zip = { version = "2.4", default-features = false }
+tar = { version = "0.4", default-features = false }
+
+# === Fuentes (nahual font viewer) ===
+# Parseo de TTF/OTF/TTC y extracción de contornos de glifo a paths.
+ttf-parser = "0.25"
+
+# ============================================================
+# Intra-workspace deps de nahual (referenciadas por workspace = true)
+# ============================================================
+nahual-text-viewer-llimphi = { path = "02_ruway/nahual/nahual-text-viewer-llimphi" }
+nahual-image-viewer-llimphi = { path = "02_ruway/nahual/nahual-image-viewer-llimphi" }
+nahual-thumb-core = { path = "02_ruway/nahual/nahual-thumb-core" }
+nahual-gallery-llimphi = { path = "02_ruway/nahual/nahual-gallery-llimphi" }
+nahual-video-viewer-llimphi = { path = "02_ruway/nahual/nahual-video-viewer-llimphi" }
+nahual-card-viewer-llimphi = { path = "02_ruway/nahual/nahual-card-viewer-llimphi" }
+nahual-audio-viewer-llimphi = { path = "02_ruway/nahual/nahual-audio-viewer-llimphi" }
+nahual-tree-viewer-llimphi = { path = "02_ruway/nahual/nahual-tree-viewer-llimphi" }
+nahual-hex-viewer-llimphi = { path = "02_ruway/nahual/nahual-hex-viewer-llimphi" }
+nahual-table-viewer-llimphi = { path = "02_ruway/nahual/nahual-table-viewer-llimphi" }
+nahual-markdown-viewer-llimphi = { path = "02_ruway/nahual/nahual-markdown-viewer-llimphi" }
+nahual-archive-viewer-llimphi = { path = "02_ruway/nahual/nahual-archive-viewer-llimphi" }
+nahual-font-viewer-llimphi = { path = "02_ruway/nahual/nahual-font-viewer-llimphi" }
+nahual-map-viewer-llimphi = { path = "02_ruway/nahual/nahual-map-viewer-llimphi" }
+nahual-geo-core = { path = "02_ruway/nahual/nahual-geo-core" }
+nahual-viewer-core = { path = "02_ruway/nahual/nahual-viewer-core" }
+nahual-file-explorer-llimphi = { path = "02_ruway/nahual/nahual-file-explorer-llimphi" }
+
+# ============================================================
+# Intra-workspace deps de pineal (módulo de gráficos)
+# ============================================================
+pineal-core = { path = "00_unanchay/pineal/pineal-core" }
+pineal-render = { path = "00_unanchay/pineal/pineal-render" }
+pineal-cartesian = { path = "00_unanchay/pineal/pineal-cartesian" }
+pineal-stream = { path = "00_unanchay/pineal/pineal-stream" }
+pineal-mesh = { path = "00_unanchay/pineal/pineal-mesh" }
+pineal-financial = { path = "00_unanchay/pineal/pineal-financial" }
+pineal-polar = { path = "00_unanchay/pineal/pineal-polar" }
+pineal-heatmap = { path = "00_unanchay/pineal/pineal-heatmap" }
+pineal-treemap = { path = "00_unanchay/pineal/pineal-treemap" }
+pineal-flow = { path = "00_unanchay/pineal/pineal-flow" }
+pineal-phosphor = { path = "00_unanchay/pineal/pineal-phosphor" }
+pineal-export = { path = "00_unanchay/pineal/pineal-export" }
+pineal-hexbin = { path = "00_unanchay/pineal/pineal-hexbin" }
+pineal-contour = { path = "00_unanchay/pineal/pineal-contour" }
+pineal-bars = { path = "00_unanchay/pineal/pineal-bars" }
+pineal = { path = "00_unanchay/pineal/pineal-umbrella" }
+
+# ============================================================
+# Intra-workspace deps de iniy (laboratorio semántico de creencias)
+# ============================================================
+iniy-core = { path = "01_yachay/iniy/iniy-core" }
+iniy-ingest = { path = "01_yachay/iniy/iniy-ingest" }
+iniy-extract = { path = "01_yachay/iniy/iniy-extract" }
+iniy-nli = { path = "01_yachay/iniy/iniy-nli" }
+iniy-nli-llm = { path = "01_yachay/iniy/iniy-nli-llm" }
+iniy-graph = { path = "01_yachay/iniy/iniy-graph" }
+iniy-store = { path = "01_yachay/iniy/iniy-store" }
+
+# === auto: declarados por crates internos faltantes ===
+cosmos-coords = { path = "01_yachay/cosmos/cosmos-coords" }
+cosmos-core = { path = "01_yachay/cosmos/cosmos-core" }
+cosmos-ephemeris = { path = "01_yachay/cosmos/cosmos-ephemeris" }
+cosmos-time = { path = "01_yachay/cosmos/cosmos-time" }
+cosmos-wcs = { path = "01_yachay/cosmos/cosmos-wcs" }
+
+# === auto: externas de eternal ===
+celestial-eop-data = { version = "0.1"}
+approx = "0.5"
+byteorder = "1.5"
+cc = "1.0"
+chrono = "0.4"
+crc32fast = "1.4"
+criterion = "0.5"
+csv = "1.4"
+flate2 = "1.0"
+glob = "0.3"
+indicatif = "0.18"
+lz4_flex = "0.11"
+memmap2 = "0.9"
+mockito = "1.0"
+ndarray = "0.15"
+num-traits = "0.2"
+once_cell = "1.19"
+parking_lot = "0.12"
+png = "0.18"
+proptest = "1.4"
+quick-xml = "0.31"
+rayon = "1.8"
+regex = "1.11"
+reqwest = "0.12"
+tiff = "0.11"
+wide = "0.7"
+wiremock = "0.6"
+
+# === i18n (rimay-localize) ===
+fluent-bundle = "0.15"
+unic-langid = { version = "0.9", features = ["macros"] }
+sys-locale = "0.3"
+
+# === Servo (puriy-engine) ===
+# Crates publicados de Servo embebibles individualmente. html5ever/markup5ever
+# ya entran via ammonia→surrealdb→nakui, así que alineamos versión para no
+# duplicar el árbol. markup5ever_rcdom es el DOM Rc-based simple (suficiente
+# para Fase 2: parsear y renderizar, sin scripting). cssparser es el tokenizer
+# CSS de Stylo, sirve para inline styles. ureq = HTTP síncrono minimalista,
+# evita pull de tokio en el engine.
+html5ever = "0.39"
+markup5ever = "0.39"
+markup5ever_rcdom = "0.39"
+cssparser = "0.35"
+url = "2"
+ureq = { version = "2", default-features = false, features = ["tls"] }
+
+# === takiy-synth (SoundFont MIDI) ===
+# rustysynth = sintetizador SF2 puro Rust, MIT. Reemplaza el oscilador
+# feo de takiy-synth por muestras reales (FluidR3, GeneralUser GS, etc).
+rustysynth = "1.3"
+
+# === takiy-playback (audio device output) ===
+# cpal = backend de audio cross-platform (ALSA/PulseAudio/Pipewire en
+# Linux, WASAPI en Windows, CoreAudio en macOS). Lo usamos sólo para
+# abrir el device default y empujar muestras f32 — nada de mezclado
+# ni efectos en el callback.
+cpal = "0.15"
+
+# === media-source-wav (decoder PCM en disco) ===
+# hound = lector/escritor WAV puro-Rust, sin deps nativas. Soporta PCM
+# entero (8/16/24/32) y float (32). Suficiente para abrir samples y
+# stems de prueba sin meter ffmpeg/symphonia.
+hound = "3.5"
+
+# === media-source-{mp3,flac,vorbis} (decoders vía symphonia) ===
+# symphonia es una colección de decoders puro-Rust mantenida. `mp3` cubre
+# media-source-mp3; `flac` (decoder + demuxer FLAC nativo) cubre
+# media-source-flac (lossless); `vorbis` + `ogg` (codec + demuxer Ogg)
+# cubren media-source-vorbis (lossy clásico, libre de patentes). Sin aac:
+# ese tier patentado entra por shared/foreign-av.
+symphonia = { version = "0.5", default-features = false, features = ["mp3", "flac", "vorbis", "ogg"] }
+
+# === media-source-opus (decoder Opus NATIVO puro-Rust) ===
+# Opus es el formato de audio nativo de gioser (par del video AV1). ogg
+# demuxea las páginas Ogg; opus-wave es un port puro-Rust de libopus
+# (SILK+CELT, sin C ni FFI) — par del rav1d del lado video.
+ogg = "0.9"
+opus-wave = "3"
+
+# === media-source-webm (demux nativo Matroska/WebM) ===
+# matroska-demuxer es un demuxer puro-Rust de MKV/WebM (EBML). Saca los
+# paquetes de los tracks V_AV1 y A_OPUS para alimentar a media-source-av1
+# y media-source-opus — un .webm AV1+Opus se reproduce 100% nativo.
+matroska-demuxer = "0.7"
diff --git a/LEEME.md b/LEEME.md
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--- /dev/null
+++ b/LEEME.md
@@ -0,0 +1,90 @@
+# llimphi
+
+> Framework de UI nativa: HAL · raster · layout · text · theme · ui — más widgets y módulos.
+
+`llimphi` es el motor gráfico que comparten todas las apps del monorepo. Pipeline retained-mode declarativa sobre `vello` + `wgpu` + `taffy`, con shaping `fontdue`/`harfbuzz`, theme `Dark/Light/Aurora/Sunset`, HAL multiplataforma (Wayland · X11 · Win32 · Android · Wawa).
+
+**Manual de uso:** [MANUAL.md](MANUAL.md) — referencia completa (bucle Elm, DSL `View<Msg>`, los ~44 widgets y 10 módulos, GPU directo, gotchas) para humanos e IA. Diseño y roadmap: [SDD.md](SDD.md).
+
+Filosofía: **un widget no se diseña pensando en mockups; se diseña con lo que `vello` y `taffy` pueden hacer.**
+
+## Instalación
+
+```sh
+# usar como dep en otro crate:
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-... = { workspace = true }
+```
+
+## Compatibilidad
+
+- **Linux/Wayland** — backend principal.
+- **Linux/X11** — via XWayland (mediante `winit`).
+- **macOS / Windows** — `winit` + `wgpu`.
+- **Android** — `clear-screen-android`, `vello-hello-android`, `vello-text-android` para validar el HAL móvil.
+- **Wawa bare-metal** — HAL alterno sobre framebuffer.
+
+## Crates: framework
+
+| Crate | Rol |
+|---|---|
+| [`llimphi-hal`](llimphi-hal/README.md) | Abstracción de superficie (winit / framebuffer / android). |
+| [`llimphi-raster`](llimphi-raster/README.md) | Rasterizer vello + cache de scenes. |
+| [`llimphi-layout`](llimphi-layout/README.md) | Layout taffy + extensiones. |
+| [`llimphi-text`](llimphi-text/README.md) | Shaping + fonts (Fontdue/HarfBuzz). |
+| [`llimphi-theme`](llimphi-theme/README.md) | Themes Dark/Light/Aurora/Sunset + paleta. |
+| [`llimphi-ui`](llimphi-ui/README.md) | `View<Msg>` retained-mode + Elm-arch. |
+
+## Crates: widgets (visuales reactivos)
+
+| Widget | Función |
+|---|---|
+| [`button`](widgets/button/README.md) | Botón con variantes. |
+| [`text-input`](widgets/text-input/README.md) | Input single-line. |
+| [`text-area`](widgets/text-area/README.md) | Textarea multi-line. |
+| [`text-editor`](widgets/text-editor/README.md) | Editor (rope · cursor · undo · highlight · clipboard · find). |
+| [`text-editor-lsp`](widgets/text-editor-lsp/README.md) | Editor + LSP. |
+| [`tree`](widgets/tree/README.md) | Árbol jerárquico. |
+| [`list`](widgets/list/README.md) | Lista virtualizada. |
+| [`tabs`](widgets/tabs/README.md) | Tabs con cierre. |
+| [`splitter`](widgets/splitter/README.md) | Splitter horizontal/vertical. |
+| [`tiled`](widgets/tiled/README.md) | Tiled window manager dentro de la app. |
+| [`slider`](widgets/slider/README.md) | Slider con tick marks. |
+| [`gallery`](widgets/gallery/README.md) | Grid de cards. |
+| [`card`](widgets/card/README.md) | Card base. |
+| [`stat-card`](widgets/stat-card/README.md) | Card para métricas. |
+| [`banner`](widgets/banner/README.md) | Banner / alerts. |
+| [`app-header`](widgets/app-header/README.md) | Header común de app. |
+| [`context-menu`](widgets/context-menu/README.md) | Menú contextual (look distintivo). |
+| [`theme-switcher`](widgets/theme-switcher/README.md) | Selector de tema. |
+| [`nodegraph`](widgets/nodegraph/README.md) | Lienzo de nodos + cables Bezier. |
+
+## Crates: modules (feature funcional con estado)
+
+| Module | Función |
+|---|---|
+| [`command-palette`](modules/command-palette/README.md) | Paleta de comandos. |
+| [`diff-viewer`](modules/diff-viewer/README.md) | Diff side-by-side. |
+| [`fif`](modules/fif/README.md) | Find-in-files. |
+| [`file-picker`](modules/file-picker/README.md) | Picker de archivos. |
+| [`mini-map`](modules/mini-map/README.md) | Mini-mapa del editor. |
+| [`bookmarks`](modules/bookmarks/README.md) | Bookmarks por archivo. |
+| [`symbol-outline`](modules/symbol-outline/README.md) | Outline de símbolos LSP. |
+| [`plugin-host`](modules/plugin-host/README.md) | Host para plugins WASM. |
+| [`shuma-term`](modules/shuma-term/README.md) | Terminal embebida (shell shuma). |
+
+## Crates: android
+
+| Crate | Rol |
+|---|---|
+| [`clear-screen-android`](android/clear-screen-android/README.md) | Smoke test HAL Android. |
+| [`vello-hello-android`](android/vello-hello-android/README.md) | Vello hello-world Android. |
+| [`vello-text-android`](android/vello-text-android/README.md) | Text shaping Android. |
+
+## Consideraciones
+
+- **Una sola API: `View<Msg>` declarativa**. Sin imperativo, sin DOM virtual ajeno.
+- **El mismo árbol corre en Wayland y Wawa**: HAL abstrae la superficie, el resto es idéntico.
+- Los widgets son **puramente visuales**; los módulos encapsulan estado + comportamiento.
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..ede9631
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Sergio
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/MANUAL.md b/MANUAL.md
new file mode 100644
index 0000000..8f1e19a
--- /dev/null
+++ b/MANUAL.md
@@ -0,0 +1,1041 @@
+# Manual de Llimphi
+
+> Motor gráfico soberano de gioser. `wgpu` + `vello` + `taffy` + `parley`,
+> bucle Elm `input → update → view → layout → raster → present`.
+> Reemplazo total de GPUI (extinto 2026-05-26): toda app gráfica de la suite
+> corre sobre Llimphi.
+
+Este documento es la **referencia de uso** orientada a humanos y a IA.
+Está organizado para salto directo: cada capa, widget y módulo trae su API
+real (firmas copiadas del código). Para el **porqué** arquitectónico ver
+[`SDD.md`](SDD.md); para la regla de concurrencia ver
+[`COMPUTO-FUERA-DEL-HILO-UI.md`](COMPUTO-FUERA-DEL-HILO-UI.md).
+
+---
+
+## Índice
+
+1. [Modelo mental en 60 segundos](#1-modelo-mental-en-60-segundos)
+2. [Arquitectura — las capas](#2-arquitectura--las-capas)
+3. [Quickstart — la app mínima](#3-quickstart--la-app-mínima)
+4. [El trait `App` (bucle Elm)](#4-el-trait-app-bucle-elm)
+5. [`Handle` — efectos y concurrencia](#5-handle--efectos-y-concurrencia)
+6. [`View<Msg>` — el DSL declarativo](#6-viewmsg--el-dsl-declarativo)
+7. [Layout (`taffy` / `Style`)](#7-layout-taffy--style)
+8. [Eventos e interacción](#8-eventos-e-interacción)
+9. [Texto](#9-texto)
+10. [Canvas custom y GPU directo](#10-canvas-custom-y-gpu-directo)
+11. [Theme y paletas](#11-theme-y-paletas)
+12. [Capas base (hal · raster · text · motion · icons · surface)](#12-capas-base)
+13. [Catálogo de widgets](#13-catálogo-de-widgets)
+14. [Catálogo de módulos](#14-catálogo-de-módulos)
+15. [`llimphi-workspace` — chasis tipo tmux](#15-llimphi-workspace--chasis-tipo-tmux)
+16. [Reglas duras y gotchas](#16-reglas-duras-y-gotchas)
+17. [Comandos y demos](#17-comandos-y-demos)
+18. [Cheat-sheet](#18-cheat-sheet)
+19. [Índice de crates](#19-índice-de-crates)
+
+---
+
+## 1. Modelo mental en 60 segundos
+
+Llimphi es **Elm sobre la GPU**. Una app es un tipo que implementa el trait
+`App` con cuatro piezas:
+
+- `Model` — estado **inmutable** de la app.
+- `Msg` — todo lo que puede pasar (`Clone + Send`).
+- `update(model, msg, handle) -> model` — transición **pura** que devuelve un
+  modelo nuevo.
+- `view(&model) -> View<Msg>` — función **pura** que describe la pantalla como
+  un árbol de `View`.
+
+El runtime hace el bucle: un evento (click/tecla/rueda) produce un `Msg`,
+`update` deriva el nuevo `Model`, `view` reconstruye el árbol, `taffy` calcula
+las cajas, `vello` rasteriza, y se hace swap del frame. **No hay mutabilidad
+compartida, no hay vDOM ajeno, no hay callbacks imperativos**: declarás qué se
+ve y qué `Msg` emite cada nodo.
+
+```
+   evento ─▶ Msg ─▶ update(model,msg) ─▶ model' ─▶ view(model') ─▶ View<Msg>
+                                                                      │
+   present ◀─ raster(vello) ◀─ layout(taffy) ◀──────────────────────┘
+```
+
+Tres reglas de oro:
+1. **`view` es pura** — no muta nada, sólo lee el modelo y arma el árbol.
+2. **Cómputo pesado va a un worker** vía `Handle::spawn`, nunca síncrono en
+   `update`/`init`/handlers (congela la ventana → "Not Responding").
+3. **Widgets son visuales y stateless**; el estado vive en tu `Model`.
+   **Módulos** sí encapsulan estado + comportamiento.
+
+---
+
+## 2. Arquitectura — las capas
+
+```
+4. llimphi-ui ........... runtime winit del bucle Elm (App, Handle, run, KeyEvent)
+   └ llimphi-compositor . árbol View<Msg>, mount sobre taffy, paint, hit-test (winit-free)
+3. llimphi-layout ....... motor de layout (taffy: flexbox + grid)
+2. llimphi-raster ....... rasterizador vectorial (vello) + backend GPU directo
+1. llimphi-text ......... shaping + fuentes (parley): bidi, ligaduras, CJK/emoji
+0. llimphi-hal .......... abstracción de superficie (wgpu + winit / framebuffer)
+```
+
+El **split compositor/runtime** (2026-05-31) es importante: `llimphi-compositor`
+es *winit-free* (sólo `View`, `mount`, `paint`, hit-test). `llimphi-ui` lo corre
+sobre winit y **re-exporta todo el compositor**, así escribís `llimphi_ui::View`
+sin enterarte del split. Esto habilita un futuro runtime sobre el framebuffer
+del kernel `wawa` reusando el mismo compositor.
+
+Auxiliares: `llimphi-theme` (paletas), `llimphi-motion` (tweens),
+`llimphi-icons` (iconos vectoriales), `llimphi-surface` (texturas externas),
+`llimphi-workspace` (chasis tmux), `llimphi-gallery` (showcase).
+
+Catálogo: **~45 widgets** (visuales) + **10 módulos** (features con estado).
+
+---
+
+## 3. Quickstart — la app mínima
+
+```rust
+use llimphi_ui::llimphi_layout::taffy::prelude::*;
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::{App, Handle, View};
+
+#[derive(Clone)]
+enum Msg { Increment, Reset }
+
+struct Counter;
+
+impl App for Counter {
+    type Model = u32;
+    type Msg = Msg;
+
+    fn title() -> &'static str { "llimphi · counter" }
+
+    fn init(_: &Handle<Self::Msg>) -> Self::Model { 0 }
+
+    fn update(model: Self::Model, msg: Self::Msg, _: &Handle<Self::Msg>) -> Self::Model {
+        match msg {
+            Msg::Increment => model.saturating_add(1),
+            Msg::Reset => 0,
+        }
+    }
+
+    fn view(model: &Self::Model) -> View<Self::Msg> {
+        let boton = View::new(Style {
+            size: Size { width: length(160.0), height: length(56.0) },
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(JustifyContent::Center),
+            ..Default::default()
+        })
+        .fill(Color::from_rgba8(60, 200, 130, 255))
+        .radius(12.0)
+        .text("+1", 28.0, Color::from_rgba8(10, 30, 20, 255))
+        .on_click(Msg::Increment);
+
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size { width: percent(1.0), height: percent(1.0) },
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(JustifyContent::Center),
+            gap: Size { width: length(0.0), height: length(24.0) },
+            ..Default::default()
+        })
+        .fill(Color::from_rgba8(20, 24, 32, 255))
+        .children(vec![
+            View::new(Style::default()).text(model.to_string(), 160.0, Color::WHITE),
+            boton,
+        ])
+    }
+}
+
+fn main() { llimphi_ui::run::<Counter>(); }
+```
+
+`Cargo.toml`:
+```toml
+[dependencies]
+llimphi-ui    = { workspace = true }
+llimphi-theme = { workspace = true }
+# + los widgets/modules que uses:
+# llimphi-widget-button = { workspace = true }
+```
+
+Corre con `cargo run -p <tu-crate> --release`. El ejemplo vivo está en
+`llimphi-ui/examples/counter.rs`.
+
+---
+
+## 4. El trait `App` (bucle Elm)
+
+Definido en `llimphi-ui/src/lib.rs`. El estado es inmutable; cada evento
+produce un `Model` nuevo.
+
+```rust
+pub trait App: 'static {
+    type Model: 'static;
+    type Msg: Clone + Send + 'static;
+
+    fn init(handle: &Handle<Self::Msg>) -> Self::Model;
+    fn update(model: Self::Model, msg: Self::Msg, handle: &Handle<Self::Msg>) -> Self::Model;
+    fn view(model: &Self::Model) -> View<Self::Msg>;
+
+    // --- Todo lo de abajo tiene default; sobreescribí lo que necesites ---
+
+    fn on_key(_model: &Self::Model, _event: &KeyEvent) -> Option<Self::Msg> { None }
+
+    fn on_wheel(_model: &Self::Model, _delta: WheelDelta,
+                _cursor: (f32, f32), _modifiers: Modifiers) -> Option<Self::Msg> { None }
+
+    /// Capa de overlay (menús, modales, popovers). Si devuelve `Some`, se pinta
+    /// encima y clicks/hover van EXCLUSIVAMENTE a ella (el fondo queda "bajo
+    /// vidrio"). La transición la maneja tu Model.
+    fn view_overlay(_model: &Self::Model) -> Option<View<Self::Msg>> { None }
+
+    /// Drag&drop de archivos desde el file manager. Un evento por archivo.
+    fn on_file_drop(_model: &Self::Model, _path: std::path::PathBuf) -> Option<Self::Msg> { None }
+
+    /// El foco cambió (Tab/Shift+Tab o click sobre un nodo `focusable`). El
+    /// runtime administra el foco; guardás `id` en tu Model para pintar el ring
+    /// y rutear el teclado. Ver §8 (Foco y teclado).
+    fn on_focus(_model: &Self::Model, _id: Option<u64>) -> Option<Self::Msg> { None }
+
+    /// IME (composición de texto: CJK, acentos muertos, emoji). Opt-in vía
+    /// `ime_allowed()` para no robarle el texto a las apps que sólo leen
+    /// `on_key`. Flujo: Enabled → Preedit* → Commit/Disabled. Ver §8 (IME).
+    fn ime_allowed() -> bool { false }
+    fn on_ime(_model: &Self::Model, _event: &ImeEvent) -> Option<Self::Msg> { None }
+    /// Área del caret en px físicos para ubicar la ventana de candidatos.
+    fn ime_cursor_area(_model: &Self::Model) -> Option<(f32, f32, f32, f32)> { None }
+
+    fn title() -> &'static str { "llimphi" }
+    fn app_id() -> Option<&'static str> { None }   // app_id del xdg-toplevel en Wayland
+    fn initial_size() -> (u32, u32) { (960, 540) }
+}
+```
+
+Punto de entrada: `pub fn run<A: App>()` — corre hasta que el usuario cierre la
+ventana o la app llame `Handle::quit`.
+
+**Eventos de teclado** (`KeyEvent`):
+```rust
+pub struct KeyEvent {
+    pub key: Key,                 // re-export de winit; usar NamedKey para teclas especiales
+    pub state: KeyState,          // Pressed | Released
+    pub text: Option<String>,     // texto resultante con IME/modifiers; None para flechas etc.
+    pub modifiers: Modifiers,     // { shift, ctrl, alt, meta }
+    pub repeat: bool,
+}
+```
+`Key` y `NamedKey` se re-exportan desde `llimphi_ui`.
+
+**Rueda** (`WheelDelta { x, y }`): normalizado a "líneas". Convención CSS:
+`y` positivo = scroll hacia abajo.
+
+---
+
+## 5. `Handle` — efectos y concurrencia
+
+`Handle<Msg>` es `Send + Clone`. Llega a `init` y `update`. Es el único modo
+legítimo de producir efectos sin romper la pureza de la transición.
+
+```rust
+impl<Msg: Send + 'static> Handle<Msg> {
+    pub fn quit(&self);                 // cierra la ventana / termina el bucle
+    pub fn dispatch(&self, msg: Msg);   // encola un Msg para el próximo turno
+    pub fn spawn<F: FnOnce() -> Msg + Send + 'static>(&self, f: F);   // worker; su Msg reentra al update
+    pub fn spawn_periodic<F: Fn() -> Msg + Send + 'static>(&self, period: Duration, f: F);  // tick periódico
+    pub fn for_test() -> Self;          // handle "muerto" para tests sin event loop
+}
+```
+
+- **`spawn`** — trabajo bloqueante (IO, PAM, parse, efemérides). El `Msg` que
+  devuelve la closure se entrega al `update` en el hilo de UI. **Este es el
+  patrón obligatorio para todo cómputo pesado** (§16).
+- **`spawn_periodic`** — feeds a intervalos: ticks de simulación (~11 Hz en
+  dominium), polling, animaciones por reloj. El thread muere cuando se cierra
+  el event loop.
+
+---
+
+## 6. `View<Msg>` — el DSL declarativo
+
+Un `View` = `Style` de taffy + relleno + texto/imagen/painter + handlers +
+hijos. Todo se arma con builders encadenables (`self -> Self`). Definido en
+`llimphi-compositor/src/view.rs`.
+
+```rust
+View::new(style: Style) -> View<Msg>
+```
+
+### Apariencia
+| Método | Efecto |
+|---|---|
+| `.fill(Color)` | color de fondo |
+| `.hover_fill(Color)` | color al pasar el cursor (habilita hit-test de hover) |
+| `.radius(f64)` | esquinas redondeadas |
+| `.alpha(f32)` | opacidad de todo el subtree `[0,1]` (capa intermedia — no gratis) |
+| `.transform(Affine)` | afín 2D alrededor del centro del rect (estilo CSS `transform-origin:50% 50%`) |
+| `.clip(bool)` | recorta hijos al rect (paint + hit-test) |
+| `.image(Image)` | pinta `peniko::Image` centrada, preservando aspect ratio |
+| `.children(Vec<View<Msg>>)` | hijos |
+
+### Texto (ver §9)
+```rust
+.text(content, size_px, color)                            // centrado
+.text_aligned(content, size_px, color, Alignment)
+.text_aligned_italic(content, size_px, color, Alignment, italic)
+.text_aligned_full(content, size_px, color, Alignment, italic, font_family: Option<String>)
+.text_runs(content, size_px, default_color, runs: Vec<(usize,usize,Color)>, Alignment) // multicolor 1-pasada
+.line_height(mult)                                        // override interlínea (default 1.2)
+```
+
+### Interacción (ver §8)
+```rust
+.on_click(Msg)
+.on_click_at(|lx, ly, w, h| -> Option<Msg>)     // posición local + tamaño del rect
+.on_right_click(Msg) / .on_right_click_at(...)
+.on_middle_click(Msg)
+.on_pointer_enter(Msg) / .on_pointer_leave(Msg)
+.draggable(|phase: DragPhase, dx, dy| -> Option<Msg>)
+.draggable_at(|phase, dx, dy, lx0, ly0| -> Option<Msg>)   // + posición inicial del press
+.drag_payload(u64)                                        // payload que viaja con el drag
+.on_drop(|payload: u64| -> Option<Msg>)                   // este nodo es drop target
+.drop_hover_fill(Color)                                   // resaltado mientras un drag lo sobrevuela
+.on_scroll(|dx, dy| -> Option<Msg>)                       // rueda local (antes del on_wheel global)
+.focusable(u64)                                           // nodo enfocable por Tab/click (id opaco)
+```
+
+### Pintura custom (ver §10)
+```rust
+.paint_with(|scene: &mut vello::Scene, ts: &mut Typesetter, rect: PaintRect| { ... })
+.gpu_paint_with(|device, queue, encoder, view, rect: PaintRect, (vp_w, vp_h)| { ... })
+```
+
+Notas clave:
+- **Un nodo es draggable *o* clickable**, no ambos: `draggable` sobreescribe
+  `on_click`.
+- Las variantes `*_at` ganan sobre las simples si ambas están.
+- `PaintRect { x, y, w, h }` es el rect **absoluto** del nodo en píxeles físicos.
+- `DragPhase` = `Move` (un evento por `CursorMoved`, `dx/dy` = delta **desde el
+  evento anterior**, no acumulado) | `End` (al soltar).
+
+---
+
+## 7. Layout (`taffy` / `Style`)
+
+`Style` es el `taffy::Style` directo, re-exportado vía
+`llimphi_ui::llimphi_layout::taffy::prelude::*`. Es Flexbox + CSS Grid puro.
+
+Campos más usados:
+```rust
+Style {
+    flex_direction: FlexDirection::Row | Column,
+    size:    Size { width, height },          // length(px) | percent(0..1) | Dimension::auto()
+    min_size, max_size,
+    flex_grow: f32, flex_shrink: f32,
+    align_items:     Some(AlignItems::{Start,Center,End,Stretch}),
+    justify_content: Some(JustifyContent::{Start,Center,End,SpaceBetween,...}),
+    gap:     Size { width, height },
+    padding: Rect { left, right, top, bottom },   // con length(px)
+    margin:  Rect { ... },
+    ..Default::default()
+}
+```
+
+Helpers de `prelude`: `length(px)`, `percent(frac)`, `auto()`, `Dimension`,
+`Size`, `Rect`, `FlexDirection`, `AlignItems`, `JustifyContent`.
+
+`llimphi-layout` además expone:
+- `LayoutTree::new()` / `.clear()` (reuso entre frames), `.leaf(style)`,
+  `.node(style, &children)`, `.compute(...)`, `.compute_with_measure(F)`.
+- `Rect { x, y, w, h }` y `ComputedLayout { rects: HashMap<NodeId, Rect> }`.
+
+En el 99% de los casos no tocás `LayoutTree` a mano: lo maneja el runtime al
+montar tu `View`. Sólo armás `Style`s.
+
+---
+
+## 8. Eventos e interacción
+
+| Quiero… | Cómo |
+|---|---|
+| Botón / fila clickable | `.on_click(Msg)` (+ `.hover_fill` para feedback) |
+| Saber dónde se clickeó (canvas) | `.on_click_at(\|lx,ly,w,h\| ...)` → convertir a coords de mundo |
+| Menú contextual | `.on_right_click(Msg::OpenMenu{..})`, guardar pos en Model, abrir en `view_overlay` |
+| Abrir en pestaña nueva | `.on_middle_click(Msg)` |
+| Preview al pasar el mouse | `.on_pointer_enter(Msg)` / `.on_pointer_leave(Msg)` |
+| Resize de panel | `.draggable(\|phase,dx,dy\| ...)` acumulando delta en el Model |
+| Arrastrar entidad de un canvas | `.draggable_at(\|phase,dx,dy,lx0,ly0\| ...)` |
+| Drag&drop entre zonas | origen: `.drag_payload(id)`; destino: `.on_drop(\|id\| ...)` + `.drop_hover_fill` |
+| Scroll global | `App::on_wheel(model, delta, cursor, mods)` |
+| Área de scroll | widget `scroll_y(...)` (autocontenido) o `.on_scroll(\|dx,dy\| ...)` por nodo |
+| Teclado | `App::on_key(model, &KeyEvent) -> Option<Msg>` |
+| Foco / Tab | `.focusable(id)` en los nodos + `App::on_focus(model, id)` (ver abajo) |
+| IME (CJK, acentos) | `App::ime_allowed() -> true` + `App::on_ime(model, &ImeEvent)` (ver abajo) |
+| Drop de archivos del SO | `App::on_file_drop(model, path)` |
+
+**Patrón overlay** (menús/modales): el modelo guarda "menú abierto sí/no".
+Mientras esté abierto, `view_overlay` devuelve `Some(view)`; clicks fuera se
+cierran envolviendo los items en un scrim a pantalla completa con
+`on_click = DismissOverlay`. Cuando el modelo dice cerrado, `view_overlay`
+devuelve `None`.
+
+**Scroll** (widget `llimphi-widget-scroll`). `scroll_y(offset, content_len,
+viewport_len, content, on_scroll, &palette)` arma un viewport clipeado +
+contenido desplazado `-offset` + barra arrastrable. Es **stateless**: el offset
+vive en tu Model. `on_scroll(delta_px)` (rueda y arrastre) emite un delta a
+sumar; clampealo con `scroll::clamp_offset` en tu `update`. Helpers:
+`ensure_visible(offset, vp, item_top, item_h)` para llevar la selección a la
+vista (teclado); `approach(cur, target, factor)` para scroll suave/inercia
+(driveado por `Handle::spawn_periodic`).
+
+**Foco y teclado.** Marcá los nodos navegables con `.focusable(id)` (id `u64`
+que vos elegís). El runtime es la **única fuente de verdad** del foco: lo mueve
+con Tab/Shift+Tab en orden de árbol (envolviendo) y al clickear un nodo
+enfocable, y te avisa con `App::on_focus(model, Option<u64>)`. Guardás el id en
+tu Model para (a) pintar el ring (`if model.focus == Some(id) { .fill(accent) }`
+en `view`) y (b) rutear el teclado al campo activo desde `on_key`. No setees el
+foco por tu cuenta vía Msg: quedaría desincronizado del runtime.
+
+**IME** (composición de texto). Opt-in: `ime_allowed() -> true`. Con IME activo
+el texto compuesto **no** llega por `KeyEvent.text` sino por `on_ime`:
+`ImeEvent::Enabled` → uno o más `Preedit{text, cursor}` (texto en composición, a
+pintar subrayado en el caret) → `Commit(text)` (insertá como tecleado) o
+`Disabled`. Reportá el área del caret con `ime_cursor_area(model)` para ubicar
+la ventana de candidatos (CJK) junto al cursor.
+
+---
+
+## 9. Texto
+
+`TextSpec` (en compositor) describe el texto de un nodo:
+```rust
+pub struct TextSpec {
+    pub content: String,
+    pub size_px: f32,
+    pub color: Color,
+    pub alignment: Alignment,          // Start | Center | End | Justify
+    pub italic: bool,
+    pub font_family: Option<String>,   // string CSS con fallbacks
+    pub line_height: f32,              // múltiplo; default 1.2
+    pub runs: Option<Vec<(usize, usize, Color)>>,  // color por rango de BYTES
+}
+```
+
+- `Center` es el default (apto para labels). Para editores/párrafos usar
+  `.text_aligned(..., Alignment::Start)`.
+- **Multicolor en una sola pasada de shaping**: `.text_runs(...)` colorea
+  rangos de bytes — es la base del syntax highlighting (un nodo por línea, no
+  por token). Anclado arriba-izquierda; el caller dimensiona el rect.
+- El runtime mide el texto con parley durante el layout (`compute_with_measure`)
+  para que taffy reserve el alto real del texto envuelto a varias líneas
+  (evita "textos aplastados").
+- Shaping completo: bidi, ligaduras, kerning, fallback CJK/emoji vía fontique.
+
+---
+
+## 10. Canvas custom y GPU directo
+
+Dos hooks para pintar primitivas no expresables como composición de `View`s.
+Conviven en el mismo árbol; el runtime pinta **toda la pasada vello primero**,
+luego los `gpu_painter` en orden DFS.
+
+### `paint_with` — vía vello (el default)
+```rust
+.paint_with(|scene: &mut vello::Scene, ts: &mut Typesetter, rect: PaintRect| {
+    // dibujar BezPath, kurbo, texto con `ts`, etc. dentro de `rect`.
+    // NO dejar push_layer sin pop_layer; NO resetear la scene.
+})
+```
+Para: dominium-canvas, osciloscopios de pluma, charts de cosmos, pineal.
+Bueno hasta ~500 K primitivos por frame (rebuild) o ~2 M (Scene reusada).
+
+### `gpu_paint_with` — sube vertex buffers directo a wgpu, salta vello
+```rust
+.gpu_paint_with(|device, queue, encoder, view, rect: PaintRect, (vp_w, vp_h)| {
+    // abrir begin_render_pass con LoadOp::Load (NO clear) para preservar vello.
+    // (vp_w, vp_h) = tamaño en px de la TextureView destino, para calcular NDC.
+})
+```
+Para volumen masivo: starfield Gaia de cosmos, particles de tinkuy, viewport de
+nakui, pineal denso. Rango 100 K – 10 M+ primitivos. **No** soporta texto ni AA
+fino ni múltiples grosores de stroke por flush. Para texto encima de un render
+GPU, usar `view_overlay` (segunda Scene vello).
+
+### ¿Cuándo cada uno?
+| Pregunta | vello (`paint_with`) | GPU directo (`gpu_paint_with`) |
+|---|---|---|
+| Primitivos/frame | < ~500 K rebuild / < ~2 M Scene reusada | 100 K – 10 M+ |
+| ¿Cambian cada frame? | sí, rebuild barato | mejor estático (buffer persistente) |
+| Curvas Bezier | nativas | hay que teselar |
+| Texto | sí | no |
+| AA fino | sí (analítico) | no (sin MSAA) |
+
+**Default: `paint_with`** salvo que ya midas que el volumen lo justifica
+(factores ~11× a 1M en GPU mid sólo en el régimen persistente). El backend GPU
+expone `GpuPipelines`/`GpuBatch` en `llimphi-raster` (§12).
+
+---
+
+## 11. Theme y paletas
+
+`llimphi-theme::Theme` es un struct de slots semánticos de color. Cuatro presets
+`const`: `Theme::dark()` (default), `light()`, `aurora()`, `sunset()`.
+
+```rust
+pub struct Theme {
+    pub name: &'static str,
+    // fondos
+    pub bg_app, bg_panel, bg_panel_alt, bg_input, bg_input_focus,
+    pub bg_button, bg_button_hover, bg_selected, bg_row_hover: Color,
+    // texto
+    pub fg_text, fg_muted, fg_placeholder, fg_destructive: Color,
+    // bordes y acento
+    pub border, border_focus, accent: Color,
+}
+
+Theme::all() -> Vec<Theme>                 // orden de rotación canónico
+Theme::by_name(name) -> Option<Theme>
+Theme::next_after(current_name) -> Theme   // para el theme-switcher
+```
+
+Tokens auxiliares en el mismo crate:
+- `motion::{FAST=80ms, NORMAL=160ms, SLOW=320ms}` + `ease_out_cubic`,
+  `ease_in_out_cubic`, `linear`.
+- `alpha::{SCRIM, GLASS_PANEL, DISABLED, HINT}` (constantes `u8`).
+- `radius::{XS=2, SM=4, MD=8, LG=12, XL=20}` (`f64`).
+
+**Patrón de widgets**: cada widget define su `XxxPalette` con
+`Palette::from_theme(&theme)`. Tu app guarda un `Theme` en el Model, deriva las
+paletas que necesita en `view`, y se las pasa a los widgets. Para cambiar de
+tema, el `theme-switcher` emite `Msg(next_theme)` y reconstruís todo.
+
+---
+
+## 12. Capas base
+
+### `llimphi-hal` — superficie
+```rust
+Hal::new(compatible_surface: Option<&wgpu::Surface>) -> Result<Hal, HalError>   // async
+trait Surface { fn size(); fn resize(w,h); fn acquire() -> Result<Frame,_>; fn present(frame, hal); }
+WinitSurface::new(hal, window: Arc<Window>) -> Result<Self, HalError>
+Frame::view() -> &wgpu::TextureView;  Frame::size() -> (u32,u32)
+```
+`Hal::new` pide adapter `Backends::PRIMARY` (Vulkan) y cae a `all()` sólo si no
+hay — **no volver a `InstanceDescriptor::default()`**: el backend GL de Mesa
+sobre Wayland segfaultea en el teardown. El runtime de `llimphi-ui` ya maneja
+todo esto; sólo tocás HAL si escribís un runtime nuevo.
+
+### `llimphi-raster` — rasterización
+```rust
+Renderer::new(hal) -> Result<Renderer,_>
+Renderer::render(&mut self, hal, scene: &vello::Scene, frame: &Frame, base_color: Color)
+// GPU directo:
+GpuPipelines::new(device, color_format) -> Self   // campos: lines, tris, rects, bind_layout
+GpuBatch::new(&pipelines)
+  .line_width(w) .add_line(p0,p1,color) .add_polyline(&pts,color)
+  .add_tri(a,b,c, ca,cb,cc) .add_tri_list(&verts,color) .add_rect(x,y,w,h,color)
+  .primitive_count() -> u32
+  .flush(device, queue, encoder, view, viewport, load_op)
+```
+Re-exporta `vello` y `peniko` (`Color`, `Image`, `Fill`, etc.).
+
+### `llimphi-text` — shaping
+```rust
+Typesetter::new()                          // una por proceso (FontContext es caro)
+  .layout(text, size_px, max_width, alignment, line_height, italic, font_family) -> Layout<()>
+  .layout_runs(text, size_px, default_color, &runs, alignment, line_height) -> Layout<RunBrush>
+TextBlock::simple(text, size_px, color, origin)
+layout_block(ts, &block) / measure(ts, &block) -> Measurement
+draw_layout(scene, &layout, color, origin) / draw_layout_runs(scene, &layout, origin)
+Alignment::{Start, Center, End, Justify}
+```
+
+### `llimphi-motion` — tweens
+```rust
+trait Lerp { fn lerp(self, other, t: f32) -> Self; }   // impl para f32,f64,(f32,f32),(f64,f64),Color
+Tween::new(from, to, duration, easing: fn(f32)->f32)   // o Tween::idle(value)
+tween.value() / .progress() / .done()
+animate(handle, duration, make_msg)                    // arranca los ticks del tween
+```
+Patrón: guardás `Tween<T>` en el Model, `animate(...)` en el update, la `view`
+lee `tween.value()` cada repaint. El tween se auto-termina.
+
+### `llimphi-icons` — iconos vectoriales (~23, grid 24×24)
+```rust
+Icon::{File, Folder, Save, Plus, Minus, X, Check, Edit, Trash, ChevronUp/Down/Left/Right,
+       Home, Search, Info, Warning, Error, Bell, Settings, More, ...}
+icon_view(Icon, color, stroke_width) -> View<Msg>
+paint_icon(scene, rect, icon, color, stroke_width)     // dentro de un paint_with
+```
+`stroke_width` en unidades del grid 24×24 (1.6 es armónico).
+
+### `llimphi-surface` — texturas externas
+```rust
+ExternalSurface::new(device, queue)        // barato de clonar (Arc<Mutex> interno)
+  .upload(&rgba, w, h)                      // desde otro hilo/decoder/cámara
+  .view(style) -> View<Msg>                 // blittea a su rect en el árbol Elm
+  .blit(queue, encoder, dst_view, rect, viewport)   // o manual desde gpu_paint_with
+```
+
+---
+
+## 13. Catálogo de widgets
+
+Los widgets son **funciones puras** que devuelven `View<Msg>` (o specs que se
+convierten a `View`). Son **stateless**: el estado vive en tu Model. Convención:
+cada uno trae `XxxPalette::from_theme(&Theme)`. Crates en
+`widgets/<nombre>/`, dep `llimphi-widget-<nombre>`.
+
+### Controles
+
+**button** — `button_view(label, &ButtonPalette, on_click: Msg) -> View`;
+`button_styled(label, style, alignment, &palette, on_click)`.
+
+**field** — wrapper de formulario (label + helper/error + requerido).
+`field_view(FieldSpec { label, control: View<Msg>, required, helper, error, palette })`.
+
+**text-input** — input single-line **con estado** `TextInputState`
+(`new()`/`masked()`, `text()`, `set_text()`, `apply_key(&KeyEvent) -> bool`,
+soporta undo/redo + selección con Shift). Render:
+`text_input_view(&state, placeholder, focused, &palette, on_focus: Msg)`.
+
+**text-area** — multilínea con estado `TextAreaState` (Enter = newline, sin
+auto-submit). `text_area_view(&state, placeholder, focused, body_height, &palette, on_focus)`.
+
+**slider** — sin estado. `slider_view(label, value, min, max, &palette,
+on_change: Fn(DragPhase, delta_value) -> Option<Msg>)`. El delta viene en
+unidades, no píxeles.
+
+**switch** — `switch_view(progress: f32 [0..1], on_toggle: Msg, &palette)`. La
+app guarda el `bool` y opcionalmente anima `progress` con un `Tween`.
+
+**segmented** — N opciones exclusivas. `segmented_view(&[&str], selected: usize,
+make_msg: Fn(usize)->Msg, &palette)`.
+
+**progress** — `linear_progress_view(progress, track, fill, height)` y
+`radial_progress_view(progress, track, fill, stroke_ratio)`. Sin eventos.
+
+**spinner** — `spinner_view(color, stroke_ratio, speed_rev_per_sec)`. Animado por
+reloj absoluto; requiere redraws periódicos (`spawn_periodic`).
+
+**badge** — `count_badge_view(count, BadgeKind)` ("99+" si ≥100) y
+`dot_badge_view(BadgeKind)`. `BadgeKind::{Info,Success,Warning,Error,Neutral}`.
+
+**avatar** — `avatar_view(name, size_px)`: círculo determinista (color por hash
+del nombre + inicial).
+
+**tooltip** — render puro. `tooltip_view(TooltipSpec { anchor, viewport, side:
+Side, text, palette })`. Se monta en `view_overlay`; la app controla visibilidad
+con `on_pointer_enter/leave`.
+
+**empty** — empty-state. `empty_view(Icon, title, description: Option<&str>, &palette)`.
+
+**skeleton** — placeholder con shimmer. `skeleton_view`, `skeleton_box_view(w,h,..)`,
+`skeleton_line_view(w,..)`. Requiere redraws periódicos.
+
+**banner** — tira de status. `banner_view(BannerKind::{Info,Success,Warning,Error}, message)`.
+
+### Contenedores y layout
+
+**panel** — chrome (gradiente + hairline accent). `panel_view(children, PanelStyle)`;
+`PanelStyle::{from_theme, from_theme_large, neutral}`. `panel_signature_painter(style)`
+para reusar el look en un `paint_with`.
+
+**card** — `card_view(children, CardOptions { accent, padding, gap, radius, signature }, &CardPalette)`.
+
+**stat-card** — métrica de dashboard. `stat_card_view(label, value, description,
+accent, &recent_items, &palette)`.
+
+**tabs** — `tabs_view(TabsSpec { labels, active: usize, on_select: Fn(usize)->Msg,
+content: View<Msg>, tab_height, palette, tab_width })`. Selección la maneja la app.
+
+**splitter** — divisor draggable de 2 panes. `splitter_two(Direction::{Row,Column},
+a, a_size, b, b_size, on_resize: Fn(DragPhase, delta)->Option<Msg>, &palette)`.
+`PaneSize::{Fixed(px), Flex}`. La app acumula el delta en su Model.
+
+**scroll** — área de scroll vertical con barra arrastrable. `scroll_y(offset,
+content_len, viewport_len, content, on_scroll: Fn(delta_px)->Msg, &palette)`.
+Stateless (offset en el Model); rueda autocontenida. Helpers: `clamp_offset`,
+`ensure_visible` (selección a la vista), `approach` (scroll suave). Ver §8.
+
+**tiled** — grilla auto cols×rows de tiles con title bar. `tiled_view(tiles, &palette)`,
+`tiled_view_cols(tiles, cols, &palette)`, y variantes `*_reorderable*` con
+`on_reorder: Fn(from, to)->Option<Msg>` (drag-to-swap por la title bar). `TileSpec { label, content }`.
+
+**panes** — árbol binario BSP tipo tmux. La app guarda un `Layout`:
+```rust
+Layout::single(id) / Layout::Split { axis: Axis, ratio, first, second }
+layout.split(target, new, axis) / .without(target) / .resize(&path, delta) / .leaves()
+panes_view(&layout, focused: PaneId, leaf: FnMut(PaneId)->View, on_resize: Fn(Vec<Side>,DragPhase,delta)->Option<Msg>,
+           on_focus: Fn(PaneId)->Msg, &palette)
+```
+
+**grid** — grilla 2D virtualizada. `ventana_visible(total, vp_w, vp_h, scroll_fila,
+&metrics) -> VisibleWindow` para virtualizar, luego `grid_view(GridSpec { cells:
+Vec<GridCell { content, label, selected, on_click }>, cols, metrics, caption, ... })`.
+
+**list** — lista vertical virtualizada. `list_view(ListSpec { rows: Vec<ListRow {
+label, selected, on_click }>, total, caption, truncated_hint, row_height, palette })`.
+La app prefiltra las filas visibles.
+
+**tree** — árbol expand/collapse. `tree_view(TreeSpec { rows: Vec<TreeRow { label,
+depth, has_children, expanded, selected, on_toggle, on_select }>, row_height,
+indent_px, palette })`. La app aplana el árbol según nodos expandidos.
+
+**navigator** — navegador data-agnóstico de nodos en dos modos conmutables
+(**árbol** ↔ **grafo**, reusa tree + nodegraph). Render-only: la app guarda
+`expanded`/`selected`/`mode`. Pasa un bosque de `NavNode { id: u64, label,
+kind: NavKind (Monad|Group|Dir|File|Other), children }` y callbacks por id.
+```rust
+navigator_view(NavSpec { roots, mode: NavMode::{Tree,Graph}, selected, palette, guides },
+    is_expanded: Fn(u64)->bool, on_toggle: Fn(u64)->Msg,
+    on_select: Fn(u64)->Msg, on_context: Option<Fn(u64)->Msg>)
+// árbol: click selecciona, chevron expande, icono por kind. grafo: cables de
+// contención padre→hijo, arrastrar selecciona, right-click abre. Pensado para
+// el sidebar de Mónadas/archivos de pata, pero no sabe de nouser.
+```
+
+**app-header** — `app_header(label, actions: Vec<View<Msg>>, &palette)`.
+
+**status-bar** — `status_bar_view(left, center, right, &palette)` con
+`StatusSegment::text(..).with_icon(Icon).clickable(Msg).emphasized()`.
+
+**breadcrumb** — `breadcrumb_view(&[&str], make_msg: Fn(usize)->Msg, &palette)`
+(el último segmento no es clickable).
+
+**modal** — diálogo centrado con scrim. `modal_view(ModalSpec { title, body:
+View<Msg>, buttons: Vec<ModalButton>, size, viewport, on_dismiss, palette })`.
+`ModalButton::{primary, cancel, destructive}(label, msg)`. Se monta en `view_overlay`.
+
+**toast** — notificaciones efímeras bottom-right. La app guarda `Vec<Toast>`
+(`Toast::{info,success,warning,error}(id, text, duration)`), filtra
+`is_alive(now)`, y `toast_stack_view(&toasts, viewport, make_dismiss: Fn(u64)->Msg)`.
+
+**splash** — splash de arranque (cuatro cuadrantes andinos). `splash_view(started_at:
+Instant, bg, fg_text)`; basado en tiempo, requiere redraws.
+
+### Ricos / interactivos
+
+**nodegraph** — lienzo de nodos + cables Bezier. Sin estado (la app guarda
+posiciones y `Wire`s).
+```rust
+NodeSpec { id: NodeId(u32), label, x, y, inputs: Vec<String>, outputs: Vec<String> }
+Wire { from_node, from_output: PinIdx(u16), to_node, to_input }
+nodegraph_view(&nodes, &wires, &palette, &metrics,
+    on_drag_node: Fn(NodeId, DragPhase, dx, dy)->Option<Msg>,
+    on_connect:   Fn(NodeId, PinIdx, NodeId, PinIdx)->Option<Msg>)
+// + nodegraph_view_ex (right-click) y nodegraph_view_styled (tints por nodo/cable)
+```
+
+**timeline** — scrub clickeable. `timeline_view(progress: f32, &palette,
+on_seek: Fn(f32 [0..1])->Option<Msg>)`.
+
+**text-editor** — editor IDE (capa visual sobre el core agnóstico). La app guarda
+`EditorState`:
+```rust
+EditorState::new(); .text(); .set_text(s); .has_selection(); .can_undo()/.can_redo();
+.add_cursor_at(line,col);  .apply_key_with_clipboard(&KeyEvent, &mut dyn Clipboard) -> ApplyResult;
+.ensure_caret_visible(visible_lines)
+// nota: `metrics` se pasa POR VALOR; el callback es on_pointer: Fn(PointerEvent)->Option<Msg>
+text_editor_view(&state, &EditorPalette, metrics: EditorMetrics, visible_lines: usize, on_pointer)
+text_editor_view_highlighted(&state, &palette, metrics, visible_lines, language: Language, on_pointer)
+text_editor_view_full(&state, &palette, metrics, visible_lines, language, match_ranges: &[(usize,usize)], on_pointer)
+syntax_palette_dark(&theme) -> SyntaxPalette   // en lib.rs del widget
+```
+
+**text-editor-core** — núcleo **agnóstico** (sin GPU, sin Llimphi; sólo
+`peniko::Color`). Reutilizable en TUI/web/headless. Tipos clave:
+- `Buffer` (sobre `ropey`): `from_str`, `text`, `insert(offset,s)`, `delete(s,e)`,
+  `offset_to_pos`, `pos_to_offset`, `slice`, `line(n)`.
+- `Pos { line, col }`, `Selection { anchor, caret }`, `Cursor { caret, anchor:
+  Option, desired_col }` con `move_left/right/up/down/word_left/...`,
+  `selection_range(&buf)`, `collapse`.
+- Ops: `replace_selection`, `delete_backward/forward`, `indent_or_insert_tab`,
+  `insert_newline_auto_indent` → devuelven `EditDelta { start, removed, inserted,
+  cursor_before, cursor_after }` con `.apply()/.undo()`.
+- `UndoStack`: `push(delta)`, `undo/redo(&mut buf, &mut cursor) -> bool`, `can_undo/redo`.
+- `FindState { query, case_sensitive }`: `all_matches`, `find_next`, `find_prev`.
+- Matching de brackets: `find_bracket_pair(&buf, &cursor) -> Option<(Pos, Pos)>`, `Direction`.
+- `Clipboard` (trait `get/set`), `MemClipboard`, `NullClipboard`.
+- `Diagnostic { range: DiagnosticRange { start: Pos, end: Pos }, severity: Severity,
+  message: String, source: Option<String> }` (+ ctors `error(..)`, `warning(..)`);
+  `Severity::{Error, Warning, Information, Hint}`.
+- Highlight tree-sitter: `Language::{Plain, Rust, Python, Wat}`
+  (+ `Language::from_cell_language(s)`); `Highlighter::new(lang)` con
+  `.highlight(&mut self, source: &str) -> Vec<Vec<Span>>` (un `Vec<Span>` **por
+  línea**), `.set_language(lang)`, `.language()`; helpers de módulo
+  `invalidate_tree_cache(lang)` y `apply_pending_edits(lang, &edits)` para el
+  caché incremental. `TokenKind`, `Span`, `SyntaxPalette::color(kind)`.
+
+**text-editor-lsp** — cliente LSP por stdin/stdout. `trait LspClient` (fire-and-forget
+`request_*` + lecturas de caché `latest_*`/`clear_*`): completions, hover,
+definition, references, rename, formatting, signature help, document symbols.
+`RustAnalyzerClient::start(workspace_root)`; `NoopLspClient` para tests.
+
+**clipboard** — portapapeles del sistema vía `arboard`. `SystemClipboard::new()`,
+`is_available()`, impl `Clipboard`. No-op silencioso si no hay display (CI headless).
+
+**menubar** — barra de menú mac-style. `menubar_view(&MenuBarSpec { menu: &AppMenu,
+open: Option<usize>, theme, viewport, height, on_open: Fn(Option<usize>)->Msg,
+on_command: Fn(&str)->Msg })`; dropdown en `view_overlay` con `menubar_overlay(spec)`
+o `menubar_overlay_animated(spec, active, appear)`. Navegación por teclado:
+`menubar_nav`, `menubar_command_at`.
+
+**edit-menu** — menú estándar de edición sobre un editor.
+`EditFlags::from_editor(&state, masked)`, `edit_context_menu(anchor, viewport,
+&theme, flags, on_action: Fn(EditAction)->Msg, on_dismiss)` →
+`ContextMenuSpec`. `apply(&mut state, EditAction, &mut clipboard) -> ApplyResult`.
+`EditAction::{Undo,Redo,Cut,Copy,Paste,Delete,SelectAll}`.
+
+**context-menu** — menú contextual genérico (look "webpage"). `ContextMenuItem::
+action(label).with_shortcut(..).icon(..).disabled().destructive().submenu(children)`
+o `::separator()`. `context_menu_view(ContextMenuSpec { anchor, viewport, header,
+items, active, on_pick: Fn(usize)->Msg, on_dismiss, palette })`; `context_menu_view_ex`
+con submenús/animación. Se monta en `view_overlay` con scrim.
+
+**theme-switcher** — `theme_switcher_view(&current: &Theme, on_change: Fn(Theme)->Msg)`
+(+ `_styled`/`_flex`). Cicla `Theme::next_after`.
+
+**shortcuts-help** — overlay "?" con atajos agrupados. `shortcuts_help_view(
+ShortcutsHelpSpec { title, groups: Vec<ShortcutGroup { title, entries:
+Vec<ShortcutEntry { keys, description }> }>, viewport, on_dismiss, palette })`.
+
+**wawa-mark** — sello vectorial del SO wawa. `wawa_mark_view(&WawaMarkPalette)`;
+`paint_mark(scene, rect, &palette)` para canvas custom. Usar en contenedor cuadrado.
+
+---
+
+## 14. Catálogo de módulos
+
+Los módulos encapsulan **estado + comportamiento** (a diferencia de los widgets).
+Todos siguen el mismo contrato:
+
+```
+State  +  Msg  +  Action  +  apply(state, msg, ...) -> Action
+                            +  on_key(state, &KeyEvent) -> Option<Msg>
+                            +  open_shortcut(&KeyEvent) -> bool
+                            +  view(state, ..., to_host: F) -> View<HostMsg>
+                            +  Palette
+```
+
+La app guarda `Option<ModuleState>` (o el state directo, p. ej. bookmarks),
+rutea el atajo de apertura con `open_shortcut`, rutea teclas con `on_key`, aplica
+`Msg`s con `apply`, y monta el `view` pasando un mapeo `to_host: Fn(ModuleMsg) ->
+HostMsg`. Cuando `apply` devuelve una `Action` (p. ej. `Invoke(id)`, `OpenAt{..}`,
+`GoTo{..}`), la app ejecuta el efecto. Crates en `modules/<nombre>/`.
+
+| Módulo | Atajo | Acción que devuelve | Propósito |
+|---|---|---|---|
+| **command-palette** | `Ctrl+Shift+P` | `Invoke(String)` | paleta de comandos fuzzy. El host declara `&[Command]` |
+| **file-picker** | `Ctrl+P` | `Open(PathBuf)` | fuzzy file picker; host pasa `&[PathBuf]` + `root` |
+| **fif** (find-in-files) | `Ctrl+Shift+F` | `OpenAt{path,line,col}`, `Searched{..}`, `Replaced{..}` | buscar/reemplazar; dual-view (dialog + barra). `search()` / `replace_all()` hacen el I/O |
+| **diff-viewer** | `Ctrl+Shift+D` | — | diff side-by-side. `DiffState::new(before_label, after_label, before, after)` computa con `similar` |
+| **mini-map** | `Ctrl+Shift+M` | `JumpTo(line)` | minimapa del buffer; agnóstico del editor (recibe `Snapshot`) |
+| **bookmarks** | `Ctrl+Alt+B` toggle, `Ctrl+Shift+B` lista, `Ctrl+Alt+N/P` nav | `JumpTo{path,line}` | marcadores per-file persistentes (state directo, no Option) |
+| **symbol-outline** | `Ctrl+Shift+O` | `GoTo{line,col}` | outline de símbolos; host arma `Vec<SymbolItem>` (LSP/tree-sitter/custom) |
+| **selector** | — | — | abstracción portátil abrir/guardar: `trait Selector` (`HostSelector` con PathBuf, `WawaSelector` placeholder content-addressed) |
+| **plugin-host** | — | `OpenAt{..}`, `SetStatus(..)` | runtime WASM (wasmi) con permisos por bitfield; `PluginHost::load_from_dir`/`invoke(id, cap, args)` |
+| **shuma-term** | `` Ctrl+` `` | `SetStatus(..)` | terminal integrada. `spawn(cwd)` lanza PTY (`shuma_exec`), `vt100::Parser` renderiza; `Tick` drena el PTY |
+
+Patrón típico de integración (command-palette):
+```rust
+struct Model { palette: Option<PaletteState>, commands: Vec<Command>, /* … */ }
+enum Msg { Palette(PaletteMsg), /* … */ }
+
+// on_key:
+if command_palette::open_shortcut(ev) { return Some(Msg::Palette(PaletteMsg::Open)); }
+if let Some(_) = &model.palette { return command_palette::on_key(p, ev).map(Msg::Palette); }
+
+// update:
+Msg::Palette(m) => {
+    if let Some(state) = model.palette.as_mut() {
+        match command_palette::apply(state, m, &model.commands) {
+            PaletteAction::Invoke(id) => { /* ejecutar comando id */ model.palette = None; }
+            PaletteAction::Close => model.palette = None,
+            PaletteAction::None => {}
+        }
+    }
+}
+
+// view_overlay:
+model.palette.as_ref().map(|s|
+    command_palette::view(s, &model.commands, &palette, Msg::Palette))
+```
+
+---
+
+## 15. `llimphi-workspace` — chasis tipo tmux
+
+Monta cualquier componente en un layout intercambiable con splits resizables
+(máquina de estados de foco/split/cierre + chrome estándar). Construido sobre
+`llimphi-widget-panes`.
+
+```rust
+Workspace::new()
+  .focused() -> PaneId         .count()      .leaves() -> Vec<PaneId>     .layout() -> &Layout
+  .focus(id)  .split(Axis) -> PaneId   .close() -> Option<PaneId>   .resize(&path, delta)
+  .apply(WsMsg) -> WsEffect
+
+enum WsMsg { Focus(PaneId), Split(Axis), Close, Resize(Vec<Side>, f32) }
+enum WsEffect { None, Created(PaneId), Closed(PaneId) }
+
+workspace_view(&ws, &WorkspacePalette,
+    leaf: FnMut(PaneId)->View<Host>,           // materializa el contenido de cada panel
+    lift: Fn(WsMsg)->Host)                      // sube los Msg del chasis a tu Msg
+```
+
+Patrón: `enum Msg { Ws(WsMsg), Panel(PaneId, PanelMsg) }`. En `update`,
+`ws.apply(msg)` te avisa con `WsEffect::{Created,Closed}(id)` para que crees o
+destruyas el estado del panel correspondiente.
+
+---
+
+## 16. Reglas duras y gotchas
+
+### 🔴 Cómputo pesado fuera del hilo de UI (PRIORIDAD URGENTE)
+Ningún `update`/`init`/handler puede ejecutar trabajo **síncrono** pesado
+(efemérides, simulación, IO, parse, embeddings, layout de árboles grandes).
+Bloquea el hilo → "Not Responding". **`init` corre dentro de `resumed`, después
+de crear la ventana**, así que un cómputo pesado ahí ya congela una ventana
+visible.
+
+Patrón (referencia: `cosmos-app-llimphi`):
+```rust
+// Model: Option<Resultado> (None = "calculando…") + flag dirty + contador de generación.
+struct Model { x: Option<Resultado>, x_dirty: bool, x_gen: u64 }
+enum Msg { XComputed(u64, Arc<Resultado>) }
+
+// al FINAL de update() (que tiene el Handle):
+if m.x_dirty {
+    m.x_dirty = false;
+    m.x_gen = m.x_gen.wrapping_add(1);
+    let (gen, input) = (m.x_gen, m.input.clone());     // sólo lo que el worker necesita (Send)
+    handle.spawn(move || Msg::XComputed(gen, Arc::new(compute(&input))));
+}
+// al recibir: aplicar SÓLO si la generación sigue vigente (evita que un
+// resultado tardío pise a uno más nuevo en drags/toggles rápidos).
+Msg::XComputed(gen, x) => if gen == m.x_gen {
+    m.x = Some(Arc::try_unwrap(x).unwrap_or_else(|a| (*a).clone()));
+}
+```
+La **generación** es imprescindible si el recálculo se dispara seguido. Ver
+[`COMPUTO-FUERA-DEL-HILO-UI.md`](COMPUTO-FUERA-DEL-HILO-UI.md) y su checklist por app.
+
+### Otras
+- **Solvers iterativos** (Newton/bisección): cota dura `for _ in 0..N`, nunca
+  `loop {}` con corte pegado al epsilon de f64 — en debug no converge → loop
+  infinito.
+- **Backend GPU**: preferir Vulkan (`Backends::PRIMARY`); el GL de Mesa sobre
+  Wayland segfaultea en el teardown. Ya está hecho en `Hal::new`, no revertir.
+- **Un nodo es draggable o clickable**, no ambos.
+- **`alpha` y `clip`** crean capas intermedias: tienen costo, usar sólo cuando
+  hace falta.
+- **`paint_with`** no debe dejar `push_layer` sin `pop_layer` ni resetear la
+  Scene.
+- **Hit-test respeta `.transform()`**: un nodo rotado/escalado/trasladado recibe
+  los clicks donde se ve pintado (el runtime invierte el afín acumulado). Lo que
+  **no** se ajusta todavía: la posición local que reciben los handlers `*_at` se
+  reporta en coords de pantalla, no en el espacio local del nodo transformado.
+- **GPUI está extinto**: no agregar dependencias ni código GPUI (regla §3 de
+  `CLAUDE.md`).
+- **Texto en regla pesada**: crear un `Typesetter` por frame es caro
+  (`FontContext::new` enumera fuentes del sistema). El runtime ya cachea uno y lo
+  pasa a `paint_with`.
+
+---
+
+## 17. Comandos y demos
+
+```bash
+cargo check --workspace                              # smoke test mínimo (debe pasar siempre)
+cargo run -p <crate> --release                       # correr una app
+cargo run -p <crate> --example <demo> --release      # correr un demo
+
+# demos del propio framework:
+cargo run -p llimphi-ui      --example counter --release   # bucle Elm completo
+cargo run -p llimphi-ui      --example editor  --release   # text field + teclado
+cargo run -p llimphi-ui      --example gpu_paint_demo --release
+cargo run -p llimphi-gallery --release                     # showcase de TODO el kit
+cargo run -p nada            --release                     # editor real para ejercitar widgets
+
+# benchmark GPU directo vs vello:
+cargo run -p llimphi-gpu-bench --release
+```
+
+`llimphi-gallery` (`src/main.rs`, ~967 líneas) es la **referencia viva** del
+patrón completo: `Model`/`Msg`/`init`/`update`/`view`/`view_overlay` con overlays
+mutuamente excluyentes (modal > atajos > toasts > context-menu > dropdown).
+Controles: click en switches/segments; "Mostrar toast"/"Abrir modal"; `?` abre
+atajos; `Esc` cierra el overlay activo.
+
+---
+
+## 18. Cheat-sheet
+
+```rust
+// ── App mínima ──────────────────────────────────────────────
+impl App for X { type Model; type Msg; init; update; view; }
+llimphi_ui::run::<X>();
+
+// ── Nodo ────────────────────────────────────────────────────
+View::new(Style{ flex_direction, size, gap, padding, align_items, justify_content, ..default() })
+    .fill(c).hover_fill(c).radius(r).clip(b).alpha(a).transform(xf)
+    .text(s, px, c) | .text_aligned(s,px,c,al) | .text_runs(s,px,c,runs,al)
+    .image(img) | .paint_with(|scene,ts,rect|{}) | .gpu_paint_with(|d,q,enc,view,rect,vp|{})
+    .on_click(m) | .on_click_at(|lx,ly,w,h|) | .on_right_click(m) | .on_middle_click(m)
+    .on_pointer_enter(m) | .on_pointer_leave(m)
+    .draggable(|ph,dx,dy|) | .draggable_at(|ph,dx,dy,lx0,ly0|)
+    .drag_payload(id) | .on_drop(|id|) | .drop_hover_fill(c)
+    .children(vec![..])
+
+// ── Efectos ─────────────────────────────────────────────────
+handle.spawn(|| Msg::Done(compute()));          // worker → reentra al update
+handle.spawn_periodic(dur, || Msg::Tick);       // feed periódico
+handle.dispatch(Msg::X);  handle.quit();
+
+// ── Estilo de layout (taffy prelude) ────────────────────────
+length(px)  percent(0..1)  Dimension::auto()
+FlexDirection::{Row,Column}  AlignItems::{Start,Center,End,Stretch}
+JustifyContent::{Start,Center,End,SpaceBetween}
+
+// ── Theme ───────────────────────────────────────────────────
+Theme::dark()/light()/aurora()/sunset();  Theme::next_after(name);  XxxPalette::from_theme(&t)
+
+// ── Overlay (menús/modales) ─────────────────────────────────
+fn view_overlay(m) -> Option<View<Msg>> { if m.open { Some(menu) } else { None } }
+```
+
+---
+
+## 19. Índice de crates
+
+**Framework** (`02_ruway/llimphi/`):
+`llimphi-hal` · `llimphi-raster` · `llimphi-text` · `llimphi-layout` ·
+`llimphi-compositor` · `llimphi-ui` · `llimphi-theme` · `llimphi-motion` ·
+`llimphi-icons` · `llimphi-surface` · `llimphi-workspace` · `llimphi-gallery` ·
+`llimphi-gpu-bench`.
+
+**Widgets** (`widgets/`, dep `llimphi-widget-<n>`): app-header · avatar · badge ·
+banner · breadcrumb · button · card · clipboard · context-menu · edit-menu ·
+empty · field · gallery · grid · list · menubar · modal · navigator · nodegraph ·
+panel · panes · progress · segmented · shortcuts-help · skeleton · slider · splash ·
+splitter · stat-card · status-bar · switch · tabs · text-area · text-editor ·
+text-editor-core · text-editor-lsp · text-input · theme-switcher · tiled ·
+timeline · toast · tooltip · tree · wawa-mark.
+
+**Módulos** (`modules/`): bookmarks · command-palette · diff-viewer · fif ·
+file-picker · mini-map · plugin-host · selector · shuma-term · symbol-outline.
+
+**Android** (`android/`): clear-screen-android · vello-hello-android ·
+vello-text-android.
+
+---
+
+> Documentos hermanos: [`SDD.md`](SDD.md) (diseño y roadmap),
+> [`COMPUTO-FUERA-DEL-HILO-UI.md`](COMPUTO-FUERA-DEL-HILO-UI.md) (regla de
+> concurrencia), [`README.md`](README.md) / [`LEEME.md`](LEEME.md) (overview).
+> Las firmas de este manual reflejan el código al 2026-06-01; ante divergencia,
+> la fuente autoritativa es el `lib.rs` de cada crate.
diff --git a/README.md b/README.md
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+++ b/README.md
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+# llimphi
+
+> Native UI framework: HAL · raster · layout · text · theme · ui — plus widgets and modules.
+
+`llimphi` is a sovereign, retained-mode UI framework with an Elm-style loop (`input → update → view → layout → raster → present`). Declarative pipeline over `vello` + `wgpu` + `taffy` + `parley`, with `Dark/Light/Aurora/Sunset` themes and a multi-platform HAL (Wayland · X11 · Win32 · Android · Wawa bare-metal). It powers a full Rust application suite; this repository is the framework extracted to stand on its own.
+
+**Usage manual:** [MANUAL.md](MANUAL.md) — full reference (Elm loop, `View<Msg>` DSL, the ~44 widgets and 10 modules, GPU path, gotchas) for humans and AI. Design rationale and roadmap: [SDD.md](SDD.md).
+
+Philosophy: **widgets aren't designed against mockups; they're designed with what `vello` and `taffy` can do.**
+
+## Quick start
+
+```sh
+git clone https://gitea.gioser.net/sergio/llimphi.git
+cd llimphi
+cargo run -p llimphi-ui --example counter   # ~124 LOC: the full Elm loop on screen
+```
+
+## Install
+
+```toml
+[dependencies]
+llimphi-ui    = { git = "https://gitea.gioser.net/sergio/llimphi.git" }
+llimphi-theme = { git = "https://gitea.gioser.net/sergio/llimphi.git" }
+# widgets are one crate each — pull only what you use:
+llimphi-widget-button = { git = "https://gitea.gioser.net/sergio/llimphi.git" }
+```
+
+## Compatibility
+
+- **Linux/Wayland** — primary backend.
+- **Linux/X11** — via XWayland.
+- **macOS / Windows** — `winit` + `wgpu`.
+- **Android** — HAL via `android` crates.
+- **Wawa bare-metal** — alternative framebuffer HAL.
+
+Crates listed in [README.md](README.md) (framework, widgets, modules, android).
+
+## Considerations
+
+- **Single API: declarative `View<Msg>`.** No imperative, no foreign vDOM.
+- **Same scene tree on Wayland and Wawa**: HAL abstracts the surface.
+- Widgets are **purely visual**; modules encapsulate state + behavior.
diff --git a/README.qu.md b/README.qu.md
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--- /dev/null
+++ b/README.qu.md
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+<!-- Quechua (Cusco/Collao). Revisión bienvenida. -->
+
+# llimphi
+
+> Natural UI framework: HAL · raster · layout · text · theme · ui — widgetkuna + modules.
+
+`llimphi` monorepupa llapan apps tukuyniqlla grafico motor. Retained-mode declarativo pipeline (`vello` + `wgpu` + `taffy`), `fontdue`/`harfbuzz` shaping, `Dark/Light/Aurora/Sunset` themes, multi-superficie HAL (Wayland · X11 · Win32 · Android · Wawa). Detalle [SDD.md](SDD.md)-pi.
+
+**Imayna llamk'ana qillqa (manual):** [MANUAL.md](MANUAL.md) — hunt'asqa referencia (Elm muyuy, `View<Msg>` DSL, ~44 widgetkuna, 10 modulekuna, GPU ñan). Runakunapaq IA-paqpas.
+
+Yuyaynin: **widget mana mockuppi munakun; vello + taffy atisqankuwan ruwasqa.**
+
+## Churay
+
+```sh
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+```
+
+## Tinkuy
+
+- **Linux/Wayland** — ñawpaq backend.
+- **Linux/X11** — XWayland-rayku.
+- **macOS / Windows** — `winit` + `wgpu`.
+- **Android** — `android` cratekuna HAL.
+- **Wawa bare-metal** — sapan framebuffer HAL.
+
+Crateskunaq listako [README.md](README.md)-pi.
+
+## Yuyaykunaq
+
+- **Sapan API: declarativo `View<Msg>`.** Mana imperativo, mana hawanka vDOM.
+- **Kikin escena Wayland Wawapipas**: HAL superficie huñun.
+- Widgets **ch'uya rikuq**; módulos estado + ruway huñun.
diff --git a/SDD.md b/SDD.md
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+++ b/SDD.md
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+# Llimphi — motor gráfico soberano
+
+> Llimphi (quechua: *color / brillo / pigmento*, en el sentido de "pintar la pantalla"). Tipo: **NATIVE GPU rendering suite**.
+
+> **Regla dura para apps:** nada de cómputo pesado síncrono en `App::update`/`init`/handlers — congela la UI ("Not Responding"). Ver [COMPUTO-FUERA-DEL-HILO-UI.md](COMPUTO-FUERA-DEL-HILO-UI.md) (patrón worker + checklist por app, prioridad urgente).
+
+> **¿Buscás cómo *usar* Llimphi?** Este SDD es el *porqué* (diseño, fases, roadmap). La referencia de *uso* — bucle Elm, DSL `View<Msg>`, catálogo de widgets/módulos, GPU directo — está en [MANUAL.md](MANUAL.md), verificada contra el código.
+
+## Tesis
+
+Soberanía total sobre el píxel. Renderizar las geometrías exactas del simulador cósmico (`cosmos`), el compositor (`mirada`), las apps de escritorio (`nahual`) y el visor (`pluma`) sin cajas negras de Apple/Google/navegadores. Reemplazo total de **GPUI** en la pila gioser.
+
+## Anatomía — 4 capas estrictas (S₀ → S₂)
+
+Cada capa hace **una sola cosa** con precisión matemática.
+
+```
+[ CUADRANTE III · 0x02 RUWAY ]
+
+4. llimphi-ui      — Lógica de Interfaz (Árbol Monádico / DAG UI)
+   │                 (manejo de estado, eventos de teclado/ratón)
+   ▼
+3. llimphi-layout  — Motor de Layout (Cálculo Espacial)
+   │                 (cajas, dimensiones, restricciones flex/grid)
+   ▼
+2. llimphi-raster  — Rasterizador Vectorial (La Brocha Fina)
+   │                 (primitivas matemáticas → píxeles via Compute Shaders)
+   ▼
+1. llimphi-hal     — Abstracción de Hardware (Puente al Silicio)
+   │                 (GPU o Framebuffer, sin importar el OS)
+   ▼
+[ HARDWARE · GPU / Pantalla ]
+```
+
+## Fases de forja
+
+### Fase 1 — Puente al Silicio (`llimphi-hal`)
+
+Aislar el motor del sistema operativo. Llimphi debe pintar tanto en una ventana Wayland controlada por `mirada` como en el framebuffer directo al arrancar `wawa`.
+
+- **Abstractor:** `wgpu` (impl Rust de WebGPU sobre Vulkan nativo). Control de memoria seguro, bajísima sobrecarga.
+- **Ventana:** `winit` para desarrollo en Linux. La arquitectura define un **trait `Surface`** abstracto: el día de mañana se desenchufa `winit` y se le pasa el puntero de memoria bruto del kernel `wawa`.
+- **Hito:** Compilar, iniciar Vulkan por debajo, limpiar la pantalla pintándola de un solo color gris plomo a 144 Hz.
+
+### Fase 2 — Brocha Matemática (`llimphi-raster`)
+
+Pintar curvas y grafos orbitales con precisión Δ < 10⁻⁹ rad sin destrozar la CPU. En lugar de rasterizar píxel por píxel, **delegar todo el cálculo vectorial a los Compute Shaders de la GPU**.
+
+- **Motor:** `vello`.
+- **Integración:** Conectar la textura de salida de `wgpu` como lienzo destino de `vello`.
+- **Ejecución:** Construir una `Scene` en `vello`. Pasarle primitivas geométricas puras (líneas, curvas de Bézier, texto).
+- **Hito:** Renderizar en pantalla el grafo de un nodo estático con anti-aliasing perfecto calculado íntegramente por la GPU.
+
+### Fase 3 — Física del Espacio (`llimphi-layout`)
+
+Posicionar dinámicamente paneles, texto y ventanas requiere resolver ecuaciones de restricciones espaciales. No escribir un sistema propio de márgenes/padding: es un sumidero infinito.
+
+- **Motor:** `taffy` (de la gente de Dioxus). Algoritmos Flexbox + CSS Grid en Rust puro.
+- **Flujo:** Antes de decirle a `llimphi-raster` dónde pintar, pasar el árbol de nodos a `taffy` para calcular las coordenadas `(x, y, width, height)` absolutas de toda la interfaz.
+- **Hito:** Paneles laterales y cajas que se redimensionan automáticamente, calculados en < 1 ms por frame.
+
+### Fase 4 — Árbol de Estado Monádico (`llimphi-ui`)
+
+El mayor problema de las interfaces (y por qué falló el paradigma OOP en esto) es el manejo del estado. Aquí se inyecta la cosmovisión estructural.
+
+- **Arquitectura:** Nada de mutabilidad compartida (`Rc<RefCell<...>>` disperso). Unidireccional estilo Elm o **DAG (Grafo Acíclico Dirigido)**: el estado de la aplicación es **inmutable** y cada evento (click, tecla) genera una **nueva versión** del estado.
+- **Bucle:**
+  1. El usuario hace click (Input).
+  2. El evento actualiza el Estado Global.
+  3. El Estado Global reconstruye el Árbol UI.
+  4. El Árbol pasa por `llimphi-layout` (Layout).
+  5. Las coordenadas resultantes generan primitivas para `llimphi-raster` (Scene).
+  6. `llimphi-hal` renderiza y hace el swap de la pantalla.
+
+## Veredicto arquitectónico
+
+No es una biblioteca genérica. Es un **motor de combate**. `wgpu + vello + taffy + DAG monádico` da un frontend capaz de competir en rendimiento con los mejores editores del mundo, diseñado como **traje a medida** para las topologías de gioser. Sin abstracciones de navegadores, sin cajas negras de Apple/Google.
+
+## Pila exacta (sin negociación)
+
+| Capa | Crate raíz | Deps externas |
+|---|---|---|
+| HAL | `llimphi-hal` | `wgpu`, `winit`, `raw-window-handle` |
+| Raster | `llimphi-raster` | `vello`, `vello_encoding`, `peniko` |
+| Text | `llimphi-text` | `parley` (shaping + fontique + swash, hereda vello via raster) |
+| Layout | `llimphi-layout` | `taffy` |
+| UI | `llimphi-ui` | `llimphi-{hal,raster,layout,text}` |
+
+## Migración GPUI → Llimphi
+
+Apps actualmente en GPUI que deben portarse:
+
+- `02_ruway/nahual/*` (todas las apps GPUI: shell, file-explorer, database-explorer, image-viewer, text-viewer + 8 libs + 12 widgets)
+- `02_ruway/mirada/mirada-launcher`, `mirada-portal`, `mirada-greeter`
+- `00_unanchay/pluma/pluma-editor-gpui`
+- `01_yachay/dominium/dominium-canvas-gpui`
+- `01_yachay/cosmos/cosmos-app` (canvas + panels GPUI)
+
+**Estrategia:** Las apps mantienen su lógica de dominio en sus `*-core` agnósticos. Solo se reemplaza la capa de presentación: en lugar de `use gpui::*`, pasan a usar `use llimphi_ui::*`.
+
+## Estado (2026-05-31)
+
+### Hecho
+- Las 5 capas del framework en producción: `llimphi-hal` (wgpu+winit), `llimphi-raster` (vello), `llimphi-text` (parley, ahora con vello directo y texto multicolor en una pasada), `llimphi-layout` (taffy, con `LayoutTree::clear()` para reuso entre frames), `llimphi-ui` (bucle Elm + runtime winit).
+- Split compositor/runtime: `llimphi-compositor` (winit-free: View tree, mount, paint/paint_gpu, hit-test) separado de `llimphi-ui` (runtime winit) → habilita un futuro runtime sobre el framebuffer de `wawa` sin winit.
+- GPUI extinto (2026-05-26): toda app gráfica de la suite corre sobre Llimphi.
+- Backend GPU directo (sin vello) completo y validado en hardware real (Iris Xe): `GpuPipelines` + `GpuBatch` + `View::gpu_paint_with`; ~11× vs vello a 1M puntos persistente, >140 fps.
+- Catálogo de ~44 widgets: incluye text-editor (split en `-core` agnóstico + `-lsp`), nodegraph, tiled/panes/splitter, tree, list, grid (virtualizada 2D), gallery, timeline (scrub clickeable), menubar/edit-menu/context-menu, clipboard del sistema, tabs, modal, toast, y la familia de controles (button/field/slider/switch/segmented/...).
+- 10 módulos compuestos: command-palette, diff-viewer, fif (find-in-files), file-picker, bookmarks, mini-map, shuma-term, symbol-outline, selector, plugin-host.
+- `llimphi-workspace` (chasis tipo tmux) + `llimphi-gallery` (showcase) + `llimphi-motion`/`llimphi-icons`/`llimphi-surface` auxiliares.
+
+### Pendiente
+- Runtime sobre framebuffer de `wawa` (`WawaFramebufferSurface`) reusando el compositor winit-free — habilitado por el split pero aún no escrito.
+- Backend GPU directo: sin MSAA/AA fino, sin texto, una sola `line_width` por flush; falta primer caller real denso (cosmos starfield) que mida una falla concreta antes de extender shaders.
+- Widgets `llimphi-widget-{transport, waveform}` aún por extraer (la nota de media los deja como futuro no bloqueante).
+- Investigación abierta: cuelgue/deadlock de apps Llimphi tras click/scroll (hipótesis `get_current_texture` Wayland FIFO) — pendiente reproducir+backtrace.
+
+## Estado — bitácora histórica
+
+- **2026-05-25:** SDD escrito. Esqueletos de los 4 crates creados.
+- **2026-05-25 (tarde):** Las 4 fases en código y compilando. Examples:
+  - `cargo run -p llimphi-hal --example clear_screen --release` — ventana gris plomo a refresh del display ✅ (verificado en hardware).
+  - `cargo run -p llimphi-raster --example render_node --release` — nodo con AA perfecto vía vello/wgpu.
+  - `cargo run -p llimphi-layout --example layout_panels --release` — sidebar + header/body/footer flex que se reorganiza al resize.
+  - `cargo run -p llimphi-ui --example counter --release` — bucle Elm completo: click hit-test → update → view → layout → raster → present.
+- **2026-05-25 (noche):** quinto crate `llimphi-text` (skrifa + vello). Bug de `max_storage_buffers_per_shader_stage` corregido (`Limits::default()` en vez de `downlevel`). `View::text()` permite poner texto centrado en cualquier nodo. Examples:
+  - `cargo run -p llimphi-text --example hello_text --release` — "Llimphi" + tagline sobre fondo negro.
+  - `counter` ahora muestra el número real (no barras) y los botones llevan label.
+- **2026-05-25 (cierre):** dos fixes de hardware + parley.
+  - **Storage write fix:** swapchain de muchos adapters Linux/Vulkan no acepta storage writes en Rgba8Unorm. Patrón nuevo: textura intermedia con `STORAGE_BINDING | TEXTURE_BINDING` donde pinta vello + `TextureBlitter` que la copia al swapchain en `Surface::present(frame, &hal)`. Cambio de API: `frame.present()` → `surface.present(frame, &hal)`.
+  - **Paint-order fix:** `mount_recursive` registraba en post-orden y el background del root tapaba a los hijos. Ahora pre-orden depth-first.
+  - **Parley:** llimphi-text reescrito sobre parley. API nueva: `Typesetter` (cachea FontContext + LayoutContext), `TextBlock { text, size_px, color, origin, max_width, alignment, line_height }`, `Alignment { Start, Center, End, Justify }`, `measure(&mut ts, &block)`. Bidi + ligatures + fallback CJK/emoji vía fontique. `hello_text` muestra título + párrafo justificado con script mixto Latin/Arabic/CJK.
+- **2026-05-25 (cierre+1):** teclado en `llimphi-ui`. `App` gana `fn on_key(model, &KeyEvent) -> Option<Msg>` con default `None`. Re-export `Key` y `NamedKey` de winit. Runtime mantiene `Modifiers` state vía `ModifiersChanged`. `TextSpec` gana `alignment` (default `Center`, los labels de botón siguen igual) + `View::text_aligned(...)`. Example nuevo `editor`: text field con char insertion, backspace, enter, tab→4-spaces, ctrl+L limpia.
+- **2026-05-26:** migración GPUI → Llimphi **completada**. GPUI queda extinto: toda app gráfica de la suite (pluma, mirada, cosmos, dominium, nahual, iniy, khipu, chasqui…) corre sobre Llimphi. No se agrega código nuevo sobre GPUI (ver regla dura §3 de `CLAUDE.md`).
+- **2026-05-31:** split de `llimphi-widget-text-editor` (4328 LOC) → núcleo agnóstico `llimphi-widget-text-editor-core` (buffer/cursor/ops/undo/bracket/find/diagnostics/clipboard/highlight, sin render: sólo `peniko::Color`) + widget Llimphi (state + view) que lo re-exporta. Núcleo reutilizable en TUI/web/headless. `LayoutTree::clear()` para reusar el árbol taffy entre frames (`llimphi-layout`).
+- **2026-05-31 (texto multicolor):** syntax highlighting en una sola pasada de shaping. `llimphi-text` gana `RunBrush` + `Typesetter::layout_runs` (color por rango de bytes vía `parley::RangedBuilder`/`StyleProperty::Brush`) + `draw_layout_runs`; `View::text_runs` lo expone. El editor pasó de un nodo (+ layout parley) por token a uno por línea.
+- **2026-05-31 (split compositor/runtime):** `llimphi-ui` (1943 LOC) partido para separar la composición declarativa del runtime winit:
+  - **`llimphi-compositor`** (nuevo, **winit-free**): el árbol `View<Msg>`, `mount` sobre taffy, `paint`/`paint_gpu` a `vello::Scene` y el hit-test. Depende sólo de `llimphi-layout` + `llimphi-text` + `vello` + `wgpu` (este último sólo por la firma de `GpuPaintFn`; `wgpu` no es windowing). **No depende de `llimphi-hal`.**
+  - **`llimphi-ui`**: queda como el runtime winit (`App`/`Handle`/`run`/event loop/`KeyEvent`) y re-exporta el compositor entero → los consumidores siguen usando `llimphi_ui::View` etc. sin cambios.
+  - Prerrequisito habilitado: `llimphi-text` ahora depende de `vello` directo (no de `llimphi-raster`), así que la pila de render (`compositor`→`text`/`vello`) es winit-free. Eso abre la puerta a un runtime sobre el framebuffer del kernel `wawa` (`WawaFramebufferSurface`) que reuse el mismo compositor sin arrastrar winit. `Renderer` (lo único que necesita `llimphi-hal`) se queda en `llimphi-raster`, consumido por `llimphi-ui`.
+
+## Roadmap — GPU directo wgpu (sin vello)
+
+### Por qué
+
+`llimphi-raster` traduce hoy todo a `vello::Scene` (BezPath / kurbo /
+peniko) y vello rasteriza vía compute shaders. Para 99 % de la suite
+sobra: pluma editor, shuma shell, mirada compositor, nahual, iniy, khipu,
+chasqui explorer, etc. pintan decenas a centenas de primitivos por frame.
+
+El techo aparece cuando una app necesita rendir **>1 M primitivos por
+frame**. En ese régimen el overhead de construir `BezPath`, ensamblar
+buffers para los shaders internos de vello y hacer una pasada compute
+por cada batch domina sobre el tiempo de raster real. Casos concretos
+en gioser:
+
+| App | Carga potencial | Trigger probable |
+|---|---|---|
+| **cosmos** | Catálogo Gaia DR3, mapas de cielo enteros | Starfield denso o sky-survey overlay |
+| **tinkuy** | Particle engine N→∞ por diseño | Sim con > 10⁵ partículas |
+| **nakui** | 100 K filas × 26 cols = 2.6 M celdas potencialmente visibles | Viewport con dataset grande |
+| **dominium** | Mean-field con N agentes | Cuando se pase de 10³ a 10⁵ |
+| **pineal** | Sus painters ya producen `Vec<f32>` interleaved (principio P1) — son los primeros listos para consumir el backend | Cualquiera de los anteriores que use pineal-* |
+
+El techo es **horizontal**. Resolverlo en cualquier app individual sería
+duplicación; el lugar es el motor.
+
+### Qué es
+
+Un backend alternativo en `llimphi-raster` que **salta vello** y sube
+los slices de coordenadas directamente a vertex buffers `wgpu`, dispara
+shaders WGSL chiquitos y emite una draw call por batch.
+
+```
+hoy:      painter → vello::Scene → BezPath → vello → wgpu → GPU
+con esto: painter → GpuBatch     → vertex buffer    → wgpu → GPU
+```
+
+El trait que ven las apps (`Canvas` para pineal, `View::paint_with` para
+llimphi-ui) **no cambia**. Cambia el implementador por debajo cuando se
+elige "modo GPU directo".
+
+### Trade-offs vs vello
+
+| | Vello (hoy) | GPU directo |
+|---|---|---|
+| AA | Analítico, perfecto | MSAA hardware o supersample en shader |
+| Curvas suaves | Bezier nativo | Hay que teselar primero |
+| Texto | Sí, vello + parley | No — usar vello para text aunque coexista |
+| Throughput primitivos | Bueno hasta ~100 K | Apto para 1–10 M |
+| Costo de mantener | Cero (vello lo mantiene Linebender) | Shaders WGSL + pipelines propias |
+
+Decisión: los dos backends **coexisten**. La app elige por hint
+(`View::gpu_paint_with` para denso, `paint_with` para todo lo demás).
+
+### Plan de tareas
+
+**Fase 0 — Spike de medición (½ día). ✓ HECHO (2026-05-28).**
+Benchmark sintético: pintar 100 K, 500 K y 1 M puntos con `SceneCanvas`
+actual vs un mock GPU-directo (vertex buffer + shader trivial). Si el
+factor no es ≥ 5× en el rango de 500 K, abortar — vello ya es
+suficiente y no vale el costo de mantenimiento. Métrica de éxito: 60 fps
+con 1 M puntos en GPU mid (Radeon 5500M, Intel Iris Xe).
+
+Implementado en `llimphi-raster/examples/spike_gpu_directo.rs`. Cubre
+ambos backends contra una textura `Rgba8Unorm` 1024×1024 headless,
+warmup 5 + 15 frames medidos, bloquea hasta GPU idle (`Maintain::Wait`)
+para que los `ms` reportados sean tiempo real CPU+GPU.
+
+El binario `llimphi-gpu-bench` (en su propio crate) reporta info del
+adapter wgpu + corre dos escenarios distintos: **rebuild por frame**
+(LCG + `write_buffer` de 12-160 MB por frame, peor caso) y
+**persistente** (buffer/Scene preparados UNA vez, bucle medido sólo
+emite la draw call — caso real de cosmos/tinkuy/nakui).
+
+**Resultados — Intel Iris Xe (TGL GT2), Mesa 26.1.1, Vulkan, 2026-05-28:**
+
+Rebuild por frame:
+
+| N | vello ms | directo ms | factor |
+|---:|---:|---:|---:|
+| 25K  | 7.3  | 1.2  | **6.05×** |
+| 50K  | 12.9 | 1.4  | **8.94×** |
+| 100K | 21.7 | 3.2  | **6.67×** |
+| 200K | 26.1 | 6.1  | 4.30× |
+| 500K | 94.4 | 18.0 | **5.25×** |
+| 1M   | 202.4 | 49.0 | 4.13× |
+
+Persistente (datos fijos, sólo redraw):
+
+| N | vello ms | directo ms | factor | fps directo |
+|---:|---:|---:|---:|---:|
+| 100K | 18.6  | 0.8  | **22.55×** | 1210 |
+| 500K | 34.1  | 3.4  | **9.97×**  | 293 |
+| 1M   | 83.1  | 7.1  | **11.76×** | 141 |
+| 2M   | 101.7 | 16.0 | **6.37×**  | 63 |
+| 5M   | crash | 41.8 | —          | 24 |
+| 10M  | crash | 79.7 | —          | 13 |
+
+Veredictos contra el criterio del SDD:
+
+- **Factor ≥5× a 500K**: ✓ PASA. Rebuild 5.25×, persistente 9.97×.
+- **≥60 fps @ 1M**: ✓ PASA en persistente (141 fps); falla en rebuild
+  (22 fps) — pero rebuild no es el use case real.
+- **Techo de vello**: ~2 M paths en GPU mid. Más alto que mi hipótesis
+  inicial (que era 200–300 K, contaminada por llvmpipe), pero existe.
+  El path directo escala lineal a >10 M sin crashes.
+
+Conclusión: el GPU directo cumple su propósito. La diferencia entre
+rebuild y persistente (5–20×) confirma que el patrón correcto es
+"datos cambian → vello, datos estáticos → GPU directo persistente".
+
+**Fase 1 — Hook en `llimphi-ui` (1–2 días).**
+Hoy `View::paint_with(F)` da
+`F: Fn(&mut vello::Scene, &mut Typesetter, PaintRect)`. Agregar:
+
+```rust
+View::gpu_paint_with(F)
+  where F: Fn(&wgpu::Device, &wgpu::Queue,
+              &mut wgpu::CommandEncoder,
+              &wgpu::TextureView, PaintRect)
+```
+
+El runtime de llimphi-ui ya tiene `Device`/`Queue` para vello; sólo hay
+que exponer el `CommandEncoder` y `TextureView` del frame durante el
+mount/paint. Compatibilidad: ambos hooks coexisten en el mismo View
+tree; el orden de pintura sigue siendo pre-orden DFS.
+
+**Fase 2 — Pipelines y shaders en `llimphi-raster` (3–5 días).**
+Tres pipelines WGSL precompiladas y cacheadas:
+
+- `lines_pipeline` — line list, anchura uniforme (expandida a tris en
+  vertex shader como hace pineal-export::png).
+- `tris_pipeline` — triangle list con per-vertex color.
+- `rects_pipeline` — instanced quad con per-instance `[x, y, w, h, color]`.
+
+Vertex format común: `[x: f32, y: f32, rgba: u32]`. Sin texturas; eso
+queda para una fase posterior si aparece demanda.
+
+**Fase 3 — `GpuBatch` accumulator (2–3 días).**
+Estructura que las apps usan dentro del callback:
+
+```rust
+let mut batch = GpuBatch::new(device);
+batch.add_lines(&coords, color);
+batch.add_tris(&coords, &colors);
+batch.add_rect(rect, color);
+batch.flush(encoder, view);  // 1 draw call por pipeline usada
+```
+
+Grow strategy: vertex buffer dobla capacidad cada vez que se queda
+chico. Sin copy back — vive del frame, se reusa el siguiente.
+
+**Fase 4 — `GpuSceneCanvas` en pineal-render (1 día).**
+Wrapper que implementa el trait `Canvas` de pineal usando `GpuBatch`
+por debajo. Cero cambios en los painters. Permite usar el catálogo
+entero de pineal en modo denso simplemente eligiendo el otro
+constructor de Canvas dentro del `gpu_paint_with`.
+
+**Fase 5 — Primer caller real (cosmos starfield, 2–3 días).**
+Adaptar `cosmos-canvas-llimphi` para subir todas las estrellas del
+viewport en una draw call usando `gpu_paint_with`. Métrica: dataset
+HYG (~120 K estrellas brillantes) renderizadas a 144 fps en GPU mid.
+
+**Fase 6 — Tests + demo + SDD (1 día). ✓ HECHO (2026-05-28).**
+- `llimphi-raster/examples/gpu_million_points.rs`: usa `GpuPipelines` +
+  `GpuBatch` puros (sin app, sin runtime Elm) para pintar N rects
+  sintéticos. Validación headless del HAL + bench de referencia
+  post-implementación. Smoke en `tests/gpu_batch_smoke.rs`.
+- Tabla "cuándo elegir" → abajo.
+- Pineal SDD §4 actualizado con `GpuSceneCanvas` en producción.
+
+### ¿Cuándo elegir vello vs GPU directo?
+
+| Pregunta | Vello (`paint_with`) | GPU directo (`gpu_paint_with`) |
+|---|---|---|
+| ¿Cuántos primitivos por frame? | < ~500 K (rebuild) o < ~2 M (Scene reusada) | 100 K – 10 M+ |
+| ¿Los datos cambian cada frame? | Sí — vello rebuild es barato hasta 500 K | Posible pero con coste de `write_buffer`; ideal estático |
+| ¿Curvas Bezier nativas? | Sí | No (teselar antes) |
+| ¿Texto? | Sí | No — usar vello hermano u overlay |
+| ¿AA fino requerido? | Sí (analítico) | No (sin MSAA todavía) |
+| ¿Múltiples grosores de stroke? | Sí | Una sola `line_width` por flush |
+| ¿Anti-fluctuación de pixel? | Sí | Subpixel jitter visible |
+| Ejemplos de uso | pluma editor, shuma shell, mirada, nahual, iniy, khipu, chasqui explorer, dominium UI | cosmos starfield denso, tinkuy particles, nakui viewport, pineal denso |
+
+Default razonable: **`paint_with`** salvo que el caller ya midió que el
+volumen lo justifica. El costo de mantener un pipeline + WGSL propios
+es alto comparado con seguir usando vello.
+
+Patrón "buffer persistente": para el use case denso real (catálogo
+fijo, particles iniciales, dataset estático), construir el
+`wgpu::Buffer` y `BindGroup` UNA vez con `GpuPipelines::{rects, tris,
+lines, bind_layout}` expuestos y emitir el draw call manualmente
+desde el `gpu_paint_with` reusando esos recursos. Eso da factores
+~11× vs vello a 1M en GPU mid (medido Iris Xe), y >140 fps.
+`GpuBatch` queda para datos transitorios (UI dinámica densa).
+
+Convivencia: una misma `View` puede registrar AMBOS hooks. El runtime
+pinta vello primero (toda la Scene), luego ejecuta los GPU painters
+en orden DFS. Para texto encima de un render GPU denso, se usa
+`App::view_overlay` (segunda Scene vello sobre el main).
+
+**Estimado total: 10–15 días de trabajo concentrado.**
+**Trabajo real (1 día, 2026-05-28):** todas las fases completas, sólo
+falta validar el criterio formal (≥5× a 500K, 60 fps @ 1M) en GPU mid
+real — el bench corrió en llvmpipe.
+
+### Trigger
+
+No empezar hasta tener un caller real que mida una falla concreta.
+El candidato natural es cosmos (starfield Gaia o sky-survey overlay).
+Hasta entonces, el item queda acá en este SDD como decisión arquitectónica
+tomada — todas las apps saben que el techo existe y que la salida
+está diseñada.
+
+### No-objetivos explícitos
+
+- **No** reemplazar vello. Coexisten — vello para vector/text/AA fino,
+  GPU directo para volumen.
+- **No** hacer un layer de abstracción tipo Skia. El trait `Canvas` de
+  pineal y el `paint_with` de llimphi son la abstracción; no se agrega
+  más arriba.
+- **No** soportar texto en el backend GPU directo. Texto siempre por
+  vello+parley; si una vista mezcla millones de puntos + labels, hace
+  `gpu_paint_with` para los puntos y un `paint_with` superpuesto para
+  los labels.
diff --git a/android/LEEME.md b/android/LEEME.md
new file mode 100644
index 0000000..0b1c254
--- /dev/null
+++ b/android/LEEME.md
@@ -0,0 +1,108 @@
+# Llimphi · Android
+
+Port nativo de Llimphi a Android. Una `NativeActivity` en C que
+delega al `android_main` que `android-activity` exporta desde la
+`.so` Rust, idéntico patrón que un binario `main()` en desktop.
+
+## Estado
+
+| crate | estado |
+|---|---|
+| `clear-screen-android` | ✓ APK firmado v2, instalable en Android 7+ |
+| resto de apps Llimphi | pendientes — el patrón es reusar `android_main` |
+
+## Tesis
+
+El motor Llimphi (HAL + raster + layout + text + ui) **no se toca**.
+Lo único nuevo por target Android es:
+
+1. Entry-point `#[no_mangle] android_main(app: AndroidApp)` en vez de
+   `fn main()`.
+2. Construir el `EventLoop` con `with_android_app(app)` para que
+   `winit` reciba `Resumed` / `Suspended` / `InputAvailable` desde el
+   Looper de Android.
+3. Recrear la `Surface` en cada `Resumed`: Android invalida la
+   NativeWindow al pasar a background. El `App::state: Option<State>`
+   ya está estructurado para eso.
+
+Las apps existentes que viven sobre Llimphi compilan sin cambios — lo
+que se reescribe es el **lifecycle wrapper**, no la lógica de render
+ni los widgets.
+
+## Cómo construir
+
+Una sola pasada — el script wrapper:
+
+```sh
+./scripts/build-android.sh clear-screen-android
+```
+
+Resultado: `target/x/release/android/clear-screen-android.apk`
+firmado con APK Signature Scheme v2, listo para
+`adb install -r <apk>`.
+
+## Setup inicial (una vez por máquina)
+
+```sh
+# Targets Rust
+rustup target add aarch64-linux-android x86_64-linux-android
+
+# Wrapper de build de Rust mobile (binario `x`)
+cargo install xbuild
+
+# NDK r27c (~640 MB descomprimido, ~1.5 GB)
+curl -L -o /tmp/ndk.zip \
+  https://dl.google.com/android/repository/android-ndk-r27c-linux.zip
+unzip /tmp/ndk.zip -d $HOME/
+export ANDROID_NDK_HOME=$HOME/android-ndk-r27c
+
+# SDK (sólo build-tools + platform-tools, no se necesita la plataforma
+# completa porque el APK se genera con aapt2 + apksigner del SDK).
+# En Artix viene del paquete `android-sdk-build-tools`.
+```
+
+El script `build-android.sh` genera automáticamente un PEM RSA2048
+self-signed en `~/.local/share/llimphi-android/debug.pem` la primera
+vez que corre. Para firma de release usar un PEM propio y exportarlo
+en `LLIMPHI_PEM`.
+
+## Estructura del APK generado
+
+```
+clear-screen-android.apk
+├── AndroidManifest.xml          ← xbuild genera; NativeActivity
+└── lib/arm64-v8a/
+    └── libclear_screen_android.so  ← 7.5 MB sin strip, ~2 MB stripped
+```
+
+Sin assets, sin recursos, sin Java/Kotlin. Todo el "código" de la app
+es la `.so` Rust. El bootstrap Java de NativeActivity lo provee el
+framework Android.
+
+## Apps por portar (orden de menor a mayor fricción)
+
+Las apps que **menos** se modifican al portar son las que ya tienen
+poca interacción con teclado/mouse y mucho rendering:
+
+1. **mirada-image-viewer-llimphi** — visor de imágenes, gestos = ok
+2. **nahual-text-viewer-llimphi** — sólo scroll + zoom
+3. **nahual-image-viewer-llimphi** — idem
+4. **pluma-md-reader** — visor markdown, mismo patrón que la web
+5. **chasqui-explorer-llimphi** — listas y tarjetas, taps obvios
+6. **shuma-shell-llimphi** — teclado virtual, ya casi no usa shortcuts
+7. **mirada-app-llimphi** — el compositor; touch desktop = problema UX
+
+Las apps con paleta de comandos (nada, pluma-app full) son las
+**últimas** porque su UX core (Ctrl+Shift+P, multi-pane splitter,
+file picker) necesita ser repensada para touch.
+
+## Próximos hitos
+
+- **Tier 1.5**: hello-world con vello rasterizando un texto + figura
+  (smoke test del stack raster completo en Android).
+- **Tier 2**: portar `mirada-image-viewer-llimphi` — primer APK
+  funcional con UI real.
+- **Tier 3**: input handling proper (touch events, soft keyboard,
+  back button), theming responsivo (dpi/density).
+- **Tier 4**: distribución (Play Store internal track, F-Droid build
+  reproducible).
diff --git a/android/clear-screen-android/Cargo.toml b/android/clear-screen-android/Cargo.toml
new file mode 100644
index 0000000..ee6b91f
--- /dev/null
+++ b/android/clear-screen-android/Cargo.toml
@@ -0,0 +1,49 @@
+[package]
+name = "clear-screen-android"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "Demo Android Tier 1: pinta la pantalla con LEAD_GRAY usando llimphi-hal sobre Android NativeActivity."
+
+# Android NativeActivity carga la lib nativa como .so via dlopen; el
+# binario final es una `cdylib` con `android_main` exportado. xbuild /
+# cargo-apk se encargan de empaquetar el .so dentro del APK.
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+llimphi-hal = { path = "../../llimphi-hal" }
+# Activamos el feature de NativeActivity en winit para que linkee con la
+# clase NativeActivity del NDK y reciba eventos de surface/input desde la
+# Activity Java/Kotlin generada por android-activity.
+winit = { workspace = true, features = ["android-native-activity"] }
+wgpu.workspace = true
+pollster.workspace = true
+# `log` se declara aquí (no en el bloque condicional Android) para que
+# `cargo check --workspace` en host pase: los macros de `log` son no-op
+# sin logger instalado. En Android, `android_logger` (más abajo) instala
+# el sink real hacia `logcat`.
+log = "0.4"
+
+[target.'cfg(target_os = "android")'.dependencies]
+android-activity = { version = "0.6", features = ["native-activity"] }
+android_logger = "0.14"
+
+# Metadata para xbuild / cargo-apk — define el manifiesto Android que se
+# inyecta en el APK final.
+[package.metadata.android]
+package = "net.gioser.llimphi.clearscreen"
+build_targets = ["aarch64-linux-android", "x86_64-linux-android"]
+min_sdk_version = 24
+target_sdk_version = 34
+
+[package.metadata.android.application]
+label = "Llimphi · clear_screen"
+debuggable = true
+
+[package.metadata.android.application.activity]
+config_changes = "orientation|screenSize|keyboardHidden"
+launch_mode = "singleTop"
+orientation = "unspecified"
diff --git a/android/clear-screen-android/LEEME.md b/android/clear-screen-android/LEEME.md
new file mode 100644
index 0000000..2b7e4c5
--- /dev/null
+++ b/android/clear-screen-android/LEEME.md
@@ -0,0 +1,11 @@
+# clear-screen-android
+
+> Smoke test del HAL Android de [llimphi](../../README.md).
+
+App mínima que limpia la pantalla con un color sólido. Sirve para verificar que el HAL Android compila + corre + dibuja sin que el resto del stack ofusque el problema.
+
+## Build
+
+```sh
+cargo apk build -p clear-screen-android
+```
diff --git a/android/clear-screen-android/README.md b/android/clear-screen-android/README.md
new file mode 100644
index 0000000..0dbaf6f
--- /dev/null
+++ b/android/clear-screen-android/README.md
@@ -0,0 +1,11 @@
+# clear-screen-android
+
+> Android HAL smoke test of [llimphi](../../README.md).
+
+Minimal app that clears the screen with a solid color. Verifies the Android HAL compiles + runs + draws without the rest of the stack obscuring the problem.
+
+## Build
+
+```sh
+cargo apk build -p clear-screen-android
+```
diff --git a/android/clear-screen-android/src/lib.rs b/android/clear-screen-android/src/lib.rs
new file mode 100644
index 0000000..4632869
--- /dev/null
+++ b/android/clear-screen-android/src/lib.rs
@@ -0,0 +1,291 @@
+//! Demo Tier 1 Android: pinta la pantalla con LEAD_GRAY usando llimphi-hal.
+//!
+//! Logging exhaustivo en cada paso del bootstrap para diagnosticar
+//! cuelgues en device real desde `adb logcat -s llimphi-android:V`.
+//! Panic hook captura backtraces a logcat — sin esto el crash es
+//! invisible (Android cierra el proceso silenciosamente).
+//!
+//! Orden de inicialización en `resumed`:
+//!   1. crear Window via winit
+//!   2. crear wgpu::Instance
+//!   3. crear Surface con la NativeWindow
+//!   4. request_adapter pasándole compatible_surface=Some(&surface)
+//!   5. request_device
+//!   6. configurar surface (formato, tamaño)
+//!   7. crear textura intermedia + blitter (llimphi-hal::WinitSurface)
+//!
+//! El orden 3 antes que 4 es lo que **garantiza** que el adapter
+//! elegido sabe presentar a esa NativeWindow concreta. Llamar
+//! `Hal::new(None)` (como hacía la primera versión) elige un adapter
+//! "cualquiera" y después la creación de surface puede fallar — o
+//! peor, parecer OK y crashear en el primer `present`.
+
+use std::sync::Arc;
+use std::time::Instant;
+
+use llimphi_hal::winit::application::ApplicationHandler;
+use llimphi_hal::winit::event::WindowEvent;
+use llimphi_hal::winit::event_loop::{ActiveEventLoop, ControlFlow, EventLoop};
+use llimphi_hal::winit::window::{Window, WindowAttributes, WindowId};
+use llimphi_hal::{wgpu, Hal, Surface, WinitSurface};
+
+const LEAD_GRAY: wgpu::Color = wgpu::Color {
+    r: 0.235,
+    g: 0.239,
+    b: 0.247,
+    a: 1.0,
+};
+
+const TAG: &str = "llimphi-android";
+
+struct State {
+    window: Arc<Window>,
+    hal: Hal,
+    surface: WinitSurface,
+}
+
+struct App {
+    state: Option<State>,
+    frames: u64,
+    last_report: Instant,
+}
+
+impl App {
+    fn new() -> Self {
+        Self {
+            state: None,
+            frames: 0,
+            last_report: Instant::now(),
+        }
+    }
+
+    /// Bootstrap: crea el estado completo o devuelve un mensaje
+    /// explicando dónde falló. **No panic-ea** — los panics en
+    /// `android_main` arrancan la cierre del proceso antes que el
+    /// logcat flushee.
+    fn boot(&self, event_loop: &ActiveEventLoop) -> Result<State, String> {
+        log::info!("[boot] 1/7 creando Window");
+        let window = event_loop
+            .create_window(WindowAttributes::default().with_title("llimphi · clear_screen"))
+            .map_err(|e| format!("create_window: {e}"))?;
+        let window = Arc::new(window);
+        let size = window.inner_size();
+        log::info!(
+            "[boot] window ok · inner_size = {}x{}",
+            size.width,
+            size.height
+        );
+
+        log::info!("[boot] 2/7 creando wgpu::Instance");
+        let instance = wgpu::Instance::new(&wgpu::InstanceDescriptor {
+            backends: wgpu::Backends::all(),
+            ..Default::default()
+        });
+        log::info!("[boot] instance ok · backends activos = {:?}", instance);
+
+        log::info!("[boot] 3/7 creando Surface contra la NativeWindow");
+        let surface = instance
+            .create_surface(window.clone())
+            .map_err(|e| format!("create_surface: {e}"))?;
+        log::info!("[boot] surface creada");
+
+        log::info!("[boot] 4/7 request_adapter (compatible_surface=Some)");
+        let adapter = pollster::block_on(instance.request_adapter(&wgpu::RequestAdapterOptions {
+            power_preference: wgpu::PowerPreference::HighPerformance,
+            force_fallback_adapter: false,
+            compatible_surface: Some(&surface),
+        }))
+        .ok_or_else(|| "request_adapter devolvió None — sin GPU compatible".to_string())?;
+        let info = adapter.get_info();
+        log::info!(
+            "[boot] adapter ok · backend={:?} name={:?} driver={:?}",
+            info.backend,
+            info.name,
+            info.driver_info
+        );
+
+        log::info!("[boot] 5/7 request_device");
+        // En Android (Mali/Adreno entry-level) Limits::default suele exceder
+        // el hardware. using_resolution recorta lo recortable preservando
+        // los counts mínimos (5 storage buffers/stage que vello necesita).
+        let limits = wgpu::Limits::default().using_resolution(adapter.limits());
+        let (device, queue) = pollster::block_on(adapter.request_device(
+            &wgpu::DeviceDescriptor {
+                label: Some("clear-screen-android-device"),
+                required_features: wgpu::Features::empty(),
+                required_limits: limits,
+                memory_hints: wgpu::MemoryHints::Performance,
+            },
+            None,
+        ))
+        .map_err(|e| format!("request_device: {e}"))?;
+        log::info!("[boot] device + queue ok");
+
+        log::info!("[boot] 6/7 ensamblando Hal");
+        let hal = Hal {
+            instance,
+            adapter,
+            device,
+            queue,
+        };
+
+        log::info!("[boot] 7/7 envolviendo en WinitSurface (intermediate + blitter)");
+        // Crítico: usar `from_surface` (no `new`), pasando la surface que
+        // ya creamos en el paso 3. `WinitSurface::new` haría un segundo
+        // create_surface contra la misma NativeWindow y Android responde
+        // ERROR_NATIVE_WINDOW_IN_USE_KHR → panic.
+        let llimphi_surface = WinitSurface::from_surface(&hal, window.clone(), surface)
+            .map_err(|e| format!("WinitSurface::from_surface: {e}"))?;
+        log::info!("[boot] ✓ bootstrap completo, pidiendo redraw");
+        window.request_redraw();
+
+        Ok(State {
+            window,
+            hal,
+            surface: llimphi_surface,
+        })
+    }
+}
+
+impl ApplicationHandler for App {
+    fn resumed(&mut self, event_loop: &ActiveEventLoop) {
+        log::info!("Resumed event");
+        match self.boot(event_loop) {
+            Ok(state) => self.state = Some(state),
+            Err(e) => {
+                log::error!("BOOT FAILED: {e}");
+                // No exit-amos para que el process siga vivo y se vea el
+                // log; el usuario cerrará la app manualmente.
+            }
+        }
+    }
+
+    fn suspended(&mut self, _event_loop: &ActiveEventLoop) {
+        log::info!("Suspended event — liberando surface");
+        self.state = None;
+    }
+
+    fn window_event(
+        &mut self,
+        event_loop: &ActiveEventLoop,
+        _id: WindowId,
+        event: WindowEvent,
+    ) {
+        let Some(state) = self.state.as_mut() else {
+            return;
+        };
+        match event {
+            WindowEvent::CloseRequested => {
+                log::info!("CloseRequested");
+                event_loop.exit();
+            }
+            WindowEvent::Resized(size) => {
+                log::info!("Resized → {}x{}", size.width, size.height);
+                state.surface.resize(size.width, size.height);
+                state.window.request_redraw();
+            }
+            WindowEvent::RedrawRequested => {
+                let frame = match state.surface.acquire() {
+                    Ok(f) => f,
+                    Err(e) => {
+                        log::warn!("acquire falló ({e}); reconfigurando");
+                        let (w, h) = state.surface.size();
+                        state.surface.resize(w, h);
+                        state.window.request_redraw();
+                        return;
+                    }
+                };
+                let mut encoder =
+                    state
+                        .hal
+                        .device
+                        .create_command_encoder(&wgpu::CommandEncoderDescriptor {
+                            label: Some("clear_screen-encoder"),
+                        });
+                {
+                    let _pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+                        label: Some("clear_screen-pass"),
+                        color_attachments: &[Some(wgpu::RenderPassColorAttachment {
+                            view: frame.view(),
+                            resolve_target: None,
+                            ops: wgpu::Operations {
+                                load: wgpu::LoadOp::Clear(LEAD_GRAY),
+                                store: wgpu::StoreOp::Store,
+                            },
+                        })],
+                        depth_stencil_attachment: None,
+                        timestamp_writes: None,
+                        occlusion_query_set: None,
+                    });
+                }
+                state.hal.queue.submit(std::iter::once(encoder.finish()));
+                state.surface.present(frame, &state.hal);
+
+                self.frames += 1;
+                let elapsed = self.last_report.elapsed();
+                if elapsed.as_secs() >= 1 {
+                    let fps = self.frames as f64 / elapsed.as_secs_f64();
+                    log::info!("{fps:.1} fps");
+                    self.frames = 0;
+                    self.last_report = Instant::now();
+                }
+                state.window.request_redraw();
+            }
+            _ => {}
+        }
+    }
+}
+
+#[cfg(target_os = "android")]
+fn install_panic_logger() {
+    // Sin esto los panic son invisibles: Android mata el proceso antes
+    // que la línea de stderr llegue a logcat. set_hook redirige el panic
+    // info a log::error que sí sale en logcat (vía android_logger).
+    std::panic::set_hook(Box::new(|info| {
+        let payload = info
+            .payload()
+            .downcast_ref::<&str>()
+            .copied()
+            .or_else(|| info.payload().downcast_ref::<String>().map(|s| s.as_str()))
+            .unwrap_or("<unknown panic payload>");
+        let location = info
+            .location()
+            .map(|l| format!("{}:{}:{}", l.file(), l.line(), l.column()))
+            .unwrap_or_else(|| "<unknown location>".into());
+        log::error!("PANIC at {location} — {payload}");
+        // Forzar flush stdio del android_logger (mejor que nada).
+    }));
+}
+
+#[cfg(target_os = "android")]
+#[no_mangle]
+fn android_main(app: android_activity::AndroidApp) {
+    android_logger::init_once(
+        android_logger::Config::default()
+            .with_max_level(log::LevelFilter::Debug)
+            .with_tag(TAG),
+    );
+    install_panic_logger();
+
+    log::info!("android_main START");
+
+    use llimphi_hal::winit::event_loop::EventLoopBuilder;
+    use llimphi_hal::winit::platform::android::EventLoopBuilderExtAndroid;
+
+    let event_loop: EventLoop<()> = match EventLoopBuilder::default().with_android_app(app).build()
+    {
+        Ok(el) => el,
+        Err(e) => {
+            log::error!("EventLoop::build failed: {e}");
+            return;
+        }
+    };
+    event_loop.set_control_flow(ControlFlow::Poll);
+    log::info!("event_loop construido, entrando a run_app");
+
+    let mut app_handler = App::new();
+    if let Err(e) = event_loop.run_app(&mut app_handler) {
+        log::error!("run_app: {e}");
+    }
+    log::info!("android_main END");
+}
diff --git a/android/scripts/build-android.sh b/android/scripts/build-android.sh
new file mode 100755
index 0000000..e99519a
--- /dev/null
+++ b/android/scripts/build-android.sh
@@ -0,0 +1,89 @@
+#!/usr/bin/env bash
+# ============================================================================
+# build-android.sh — empaca un crate Llimphi-Android como APK firmado.
+#
+# Uso:
+#   ./build-android.sh <crate-dir> [arch] [profile]
+#
+#   crate-dir : path al Cargo.toml del crate Android (cdylib + android_main)
+#   arch      : arm64 | x64           (default arm64)
+#   profile   : release | debug       (default release)
+#
+# Requisitos:
+#   - rustup target add aarch64-linux-android x86_64-linux-android
+#   - cargo install xbuild       (binario `x`)
+#   - cargo install cargo-ndk    (opcional, sólo si querés build sin APK)
+#   - NDK r27+ en $ANDROID_NDK_HOME
+#   - Android SDK en $ANDROID_HOME (cmdline-tools + build-tools)
+#   - PEM dev en $LLIMPHI_PEM (se crea automáticamente la primera vez)
+#
+# Resultado:
+#   target/x/<profile>/android/<crate>.apk   — APK firmado v2, instalable con
+#                                              `adb install -r <apk>`.
+# ============================================================================
+set -euo pipefail
+
+CRATE_DIR="${1:?se requiere crate-dir como primer argumento}"
+ARCH="${2:-arm64}"
+PROFILE="${3:-release}"
+
+# --- toolchain -------------------------------------------------------------
+: "${ANDROID_NDK_HOME:=/home/sergio/android-ndk-r27c}"
+: "${ANDROID_NDK_ROOT:=$ANDROID_NDK_HOME}"
+: "${ANDROID_HOME:=/opt/android-sdk}"
+: "${LLIMPHI_PEM:=$HOME/.local/share/llimphi-android/debug.pem}"
+export ANDROID_NDK_HOME ANDROID_NDK_ROOT ANDROID_HOME
+
+X_BIN="${X_BIN:-$HOME/.cargo/bin/x}"
+test -x "$X_BIN" || { echo "❌ xbuild (cargo install xbuild)"; exit 1; }
+test -d "$ANDROID_NDK_HOME" || { echo "❌ NDK no encontrado en $ANDROID_NDK_HOME"; exit 1; }
+test -d "$ANDROID_HOME"     || { echo "❌ SDK no encontrado en $ANDROID_HOME"; exit 1; }
+
+# --- PEM de firma dev (RSA 2048 + cert auto-firmado) -----------------------
+if [ ! -f "$LLIMPHI_PEM" ]; then
+    echo "→ generando PEM de firma dev en $LLIMPHI_PEM"
+    mkdir -p "$(dirname "$LLIMPHI_PEM")"
+    openssl req -x509 -newkey rsa:2048 \
+        -keyout "${LLIMPHI_PEM}.key" \
+        -out    "${LLIMPHI_PEM}.cert" \
+        -days 36500 -nodes \
+        -subj "/CN=llimphi-dev/O=gioser/C=AR" 2>/dev/null
+    cat "${LLIMPHI_PEM}.key" "${LLIMPHI_PEM}.cert" > "$LLIMPHI_PEM"
+fi
+
+# --- flags -----------------------------------------------------------------
+PROFILE_FLAG="--release"
+[ "$PROFILE" = "debug" ] && PROFILE_FLAG="--debug"
+
+# --- build ----------------------------------------------------------------
+cd "$CRATE_DIR"
+CRATE_NAME=$(grep '^name *=' Cargo.toml | head -1 | sed -E 's/.*"([^"]+)".*/\1/')
+echo "→ building $CRATE_NAME · $ARCH · $PROFILE"
+
+"$X_BIN" build \
+    --platform android \
+    --arch "$ARCH" \
+    --format apk \
+    $PROFILE_FLAG \
+    --pem "$LLIMPHI_PEM"
+
+# --- locate + verify -------------------------------------------------------
+APK=$(find ../../../../target/x/$PROFILE/android -name "${CRATE_NAME}.apk" 2>/dev/null | head -1)
+[ -z "$APK" ] && APK=$(find . -name "${CRATE_NAME}.apk" 2>/dev/null | head -1)
+[ -z "$APK" ] && { echo "❌ APK no encontrado"; exit 1; }
+APK=$(readlink -f "$APK")
+SIZE=$(du -h "$APK" | cut -f1)
+
+APKSIGNER="$ANDROID_HOME/build-tools/37.0.0/apksigner"
+if [ -x "$APKSIGNER" ]; then
+    if "$APKSIGNER" verify --min-sdk-version 24 "$APK" 2>/dev/null; then
+        echo "✓ firma verificada (APK Signature Scheme v2)"
+    else
+        echo "⚠ firma no verifica"
+    fi
+fi
+
+echo "✓ $APK ($SIZE)"
+echo
+echo "Instalar en device:"
+echo "  adb install -r $APK"
diff --git a/android/vello-hello-android/Cargo.toml b/android/vello-hello-android/Cargo.toml
new file mode 100644
index 0000000..187fe94
--- /dev/null
+++ b/android/vello-hello-android/Cargo.toml
@@ -0,0 +1,43 @@
+[package]
+name = "vello-hello-android"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "Tier 1.5 Android: vello + llimphi-raster pintando una chacana animada como smoke test del stack completo."
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+llimphi-hal = { path = "../../llimphi-hal" }
+llimphi-raster = { path = "../../llimphi-raster" }
+winit = { workspace = true, features = ["android-native-activity"] }
+wgpu.workspace = true
+vello.workspace = true
+pollster.workspace = true
+# `log` se declara aquí (no en el bloque condicional Android) para que
+# `cargo check --workspace` en host pase: los macros de `log` son no-op
+# sin logger instalado. En Android, `android_logger` (más abajo) instala
+# el sink real hacia `logcat`.
+log = "0.4"
+
+[target.'cfg(target_os = "android")'.dependencies]
+android-activity = { version = "0.6", features = ["native-activity"] }
+android_logger = "0.14"
+
+[package.metadata.android]
+package = "net.gioser.llimphi.vellohello"
+build_targets = ["aarch64-linux-android", "x86_64-linux-android"]
+min_sdk_version = 24
+target_sdk_version = 34
+
+[package.metadata.android.application]
+label = "Llimphi · vello-hello"
+debuggable = true
+
+[package.metadata.android.application.activity]
+config_changes = "orientation|screenSize|keyboardHidden"
+launch_mode = "singleTop"
+orientation = "unspecified"
diff --git a/android/vello-hello-android/LEEME.md b/android/vello-hello-android/LEEME.md
new file mode 100644
index 0000000..8b8be30
--- /dev/null
+++ b/android/vello-hello-android/LEEME.md
@@ -0,0 +1,11 @@
+# vello-hello-android
+
+> Vello hello-world Android de [llimphi](../../README.md).
+
+App que dibuja un par de shapes con `vello` sobre el HAL Android. Siguiente paso después de [`clear-screen-android`](../clear-screen-android/README.md): valida que vello/wgpu corren en el dispositivo.
+
+## Build
+
+```sh
+cargo apk build -p vello-hello-android
+```
diff --git a/android/vello-hello-android/README.md b/android/vello-hello-android/README.md
new file mode 100644
index 0000000..d3e79a6
--- /dev/null
+++ b/android/vello-hello-android/README.md
@@ -0,0 +1,11 @@
+# vello-hello-android
+
+> Vello hello-world Android of [llimphi](../../README.md).
+
+App that draws a couple of shapes with `vello` over the Android HAL. Next step after [`clear-screen-android`](../clear-screen-android/README.md): validates that vello/wgpu run on the device.
+
+## Build
+
+```sh
+cargo apk build -p vello-hello-android
+```
diff --git a/android/vello-hello-android/src/lib.rs b/android/vello-hello-android/src/lib.rs
new file mode 100644
index 0000000..e8fc845
--- /dev/null
+++ b/android/vello-hello-android/src/lib.rs
@@ -0,0 +1,376 @@
+//! Tier 1.5 Android: chacana animada con vello + llimphi-raster.
+//!
+//! Smoke test del stack raster completo en device móvil:
+//!   wgpu (Vulkan/Adreno) → llimphi-hal (intermediate Rgba8) →
+//!   vello::Scene (kurbo paths + peniko brushes) →
+//!   llimphi_raster::Renderer (compute pipeline AA) →
+//!   blit a swapchain.
+//!
+//! El bootstrap es el mismo orden estricto que `clear-screen-android`:
+//! create_surface antes que request_adapter (compatible_surface=Some),
+//! WinitSurface::from_surface (no `new`), panic hook al logcat.
+//!
+//! Si esta app pinta y mantiene fps en device, todas las apps Llimphi
+//! basadas en vello están listas para portar mecánicamente — solo hay
+//! que envolver su `build_scene` con este shell.
+
+use std::sync::Arc;
+use std::time::Instant;
+
+use llimphi_hal::winit::application::ApplicationHandler;
+use llimphi_hal::winit::event::WindowEvent;
+use llimphi_hal::winit::event_loop::{ActiveEventLoop, ControlFlow, EventLoop};
+use llimphi_hal::winit::window::{Window, WindowAttributes, WindowId};
+use llimphi_hal::{wgpu, Hal, Surface, WinitSurface};
+use llimphi_raster::kurbo::{Affine, BezPath, Circle, Stroke};
+use llimphi_raster::peniko::{Color, Fill};
+use llimphi_raster::{vello, Renderer};
+
+const TAG: &str = "llimphi-vello";
+
+// Paleta gioser (mismos hex que la web/Llimphi-theme).
+const COSMOS_NIGHT: Color = Color::from_rgba8(0x0E, 0x10, 0x16, 255);
+const ACCENT_CYAN: Color = Color::from_rgba8(0xA6, 0xD8, 0xFF, 255);
+const ACCENT_AMBER: Color = Color::from_rgba8(0xE8, 0xC9, 0x7A, 255);
+const ACCENT_BLUE: Color = Color::from_rgba8(0x6E, 0x8C, 0xDC, 255);
+const ACCENT_VIOLET: Color = Color::from_rgba8(0xC3, 0x9C, 0xE8, 255);
+
+struct State {
+    window: Arc<Window>,
+    hal: Hal,
+    surface: WinitSurface,
+    renderer: Renderer,
+    scene: vello::Scene,
+}
+
+struct App {
+    state: Option<State>,
+    started: Instant,
+    frames: u64,
+    last_report: Instant,
+}
+
+impl App {
+    fn new() -> Self {
+        let now = Instant::now();
+        Self {
+            state: None,
+            started: now,
+            frames: 0,
+            last_report: now,
+        }
+    }
+
+    fn boot(&self, event_loop: &ActiveEventLoop) -> Result<State, String> {
+        log::info!("[boot] 1/8 Window");
+        let window = event_loop
+            .create_window(WindowAttributes::default().with_title("llimphi · vello-hello"))
+            .map_err(|e| format!("create_window: {e}"))?;
+        let window = Arc::new(window);
+
+        log::info!("[boot] 2/8 wgpu::Instance");
+        let instance = wgpu::Instance::new(&wgpu::InstanceDescriptor {
+            backends: wgpu::Backends::all(),
+            ..Default::default()
+        });
+
+        log::info!("[boot] 3/8 Surface (única create_surface en este boot)");
+        let surface = instance
+            .create_surface(window.clone())
+            .map_err(|e| format!("create_surface: {e}"))?;
+
+        log::info!("[boot] 4/8 Adapter compatible con surface");
+        let adapter = pollster::block_on(instance.request_adapter(&wgpu::RequestAdapterOptions {
+            power_preference: wgpu::PowerPreference::HighPerformance,
+            force_fallback_adapter: false,
+            compatible_surface: Some(&surface),
+        }))
+        .ok_or_else(|| "request_adapter → None".to_string())?;
+        let info = adapter.get_info();
+        log::info!(
+            "[boot] adapter ok · {:?} · {} · {:?}",
+            info.backend,
+            info.name,
+            info.driver_info
+        );
+
+        log::info!("[boot] 5/8 Device + Queue");
+        let limits = wgpu::Limits::default().using_resolution(adapter.limits());
+        let (device, queue) = pollster::block_on(adapter.request_device(
+            &wgpu::DeviceDescriptor {
+                label: Some("vello-hello-device"),
+                required_features: wgpu::Features::empty(),
+                required_limits: limits,
+                memory_hints: wgpu::MemoryHints::Performance,
+            },
+            None,
+        ))
+        .map_err(|e| format!("request_device: {e}"))?;
+
+        log::info!("[boot] 6/8 Hal");
+        let hal = Hal {
+            instance,
+            adapter,
+            device,
+            queue,
+        };
+
+        log::info!("[boot] 7/8 WinitSurface::from_surface");
+        let surface = WinitSurface::from_surface(&hal, window.clone(), surface)
+            .map_err(|e| format!("WinitSurface: {e}"))?;
+
+        log::info!("[boot] 8/8 vello Renderer");
+        let renderer =
+            Renderer::new(&hal).map_err(|e| format!("Renderer::new: {e}"))?;
+
+        log::info!("[boot] ✓ stack raster listo, primer redraw");
+        window.request_redraw();
+
+        Ok(State {
+            window,
+            hal,
+            surface,
+            renderer,
+            scene: vello::Scene::new(),
+        })
+    }
+}
+
+impl ApplicationHandler for App {
+    fn resumed(&mut self, event_loop: &ActiveEventLoop) {
+        log::info!("Resumed");
+        match self.boot(event_loop) {
+            Ok(s) => self.state = Some(s),
+            Err(e) => log::error!("BOOT FAILED: {e}"),
+        }
+    }
+
+    fn suspended(&mut self, _event_loop: &ActiveEventLoop) {
+        log::info!("Suspended — liberando state");
+        self.state = None;
+    }
+
+    fn window_event(
+        &mut self,
+        event_loop: &ActiveEventLoop,
+        _id: WindowId,
+        event: WindowEvent,
+    ) {
+        let Some(state) = self.state.as_mut() else {
+            return;
+        };
+        match event {
+            WindowEvent::CloseRequested => event_loop.exit(),
+            WindowEvent::Resized(size) => {
+                log::info!("Resized → {}x{}", size.width, size.height);
+                state.surface.resize(size.width, size.height);
+                state.window.request_redraw();
+            }
+            WindowEvent::RedrawRequested => {
+                let frame = match state.surface.acquire() {
+                    Ok(f) => f,
+                    Err(e) => {
+                        log::warn!("acquire {e}, reconfig");
+                        let (w, h) = state.surface.size();
+                        state.surface.resize(w, h);
+                        state.window.request_redraw();
+                        return;
+                    }
+                };
+                let (w, h) = frame.size();
+                let t = self.started.elapsed().as_secs_f64();
+                state.scene.reset();
+                build_chacana(&mut state.scene, w as f64, h as f64, t);
+                if let Err(e) = state.renderer.render(
+                    &state.hal,
+                    &state.scene,
+                    &frame,
+                    COSMOS_NIGHT,
+                ) {
+                    log::error!("render: {e}");
+                }
+                state.surface.present(frame, &state.hal);
+
+                self.frames += 1;
+                let elapsed = self.last_report.elapsed();
+                if elapsed.as_secs() >= 1 {
+                    let fps = self.frames as f64 / elapsed.as_secs_f64();
+                    log::info!("{fps:.1} fps · {w}x{h}");
+                    self.frames = 0;
+                    self.last_report = Instant::now();
+                }
+                state.window.request_redraw();
+            }
+            _ => {}
+        }
+    }
+}
+
+/// Construye la chacana (cruz andina escalonada) animada, centrada en el
+/// viewport. El sol central late con sin(t); cuatro rayos cardinales
+/// rotan en una vuelta cada 12 s; halo cyan constante.
+fn build_chacana(scene: &mut vello::Scene, w: f64, h: f64, t: f64) {
+    let cx = w * 0.5;
+    let cy = h * 0.5;
+    let unit = (w.min(h)) * 0.06; // tamaño de la escala de la cruz
+
+    // Halo radial (anillo cyan suave)
+    scene.stroke(
+        &Stroke::new(2.0),
+        Affine::IDENTITY,
+        Color::from_rgba8(0xA6, 0xD8, 0xFF, 80),
+        None,
+        &Circle::new((cx, cy), unit * 4.6),
+    );
+    scene.stroke(
+        &Stroke::new(1.0),
+        Affine::IDENTITY,
+        Color::from_rgba8(0xA6, 0xD8, 0xFF, 140),
+        None,
+        &Circle::new((cx, cy), unit * 4.0),
+    );
+
+    // Rayos cardinales rotantes (4 trazos a 90°)
+    let theta = t * (std::f64::consts::TAU / 12.0); // 1 vuelta cada 12 s
+    let rotate = Affine::translate((cx, cy)) * Affine::rotate(theta);
+    for i in 0..4 {
+        let angle = i as f64 * std::f64::consts::FRAC_PI_2;
+        let dir = (angle.cos(), angle.sin());
+        let mut p = BezPath::new();
+        p.move_to((dir.0 * unit * 3.2, dir.1 * unit * 3.2));
+        p.line_to((dir.0 * unit * 4.4, dir.1 * unit * 4.4));
+        scene.stroke(
+            &Stroke::new(1.5),
+            rotate,
+            ACCENT_BLUE,
+            None,
+            &p,
+        );
+    }
+
+    // Chacana: cruz escalonada de 12 puntas. Construida como BezPath.
+    // La forma clásica: cuadrado central + escalones en 4 direcciones.
+    let chacana = chacana_path(unit);
+    let center = Affine::translate((cx, cy));
+
+    // Glow ambar exterior
+    scene.stroke(
+        &Stroke::new(6.0),
+        center,
+        Color::from_rgba8(0xE8, 0xC9, 0x7A, 110),
+        None,
+        &chacana,
+    );
+    // Outline cyan
+    scene.stroke(
+        &Stroke::new(2.0),
+        center,
+        ACCENT_CYAN,
+        None,
+        &chacana,
+    );
+    // Relleno violeta tenue
+    scene.fill(
+        Fill::NonZero,
+        center,
+        Color::from_rgba8(0xC3, 0x9C, 0xE8, 40),
+        None,
+        &chacana,
+    );
+
+    // Sol central que late
+    let pulse = 1.0 + 0.18 * (t * 1.8).sin();
+    let r_sun = unit * 0.7 * pulse;
+    scene.fill(
+        Fill::NonZero,
+        Affine::IDENTITY,
+        ACCENT_AMBER,
+        None,
+        &Circle::new((cx, cy), r_sun),
+    );
+    // Corona
+    scene.stroke(
+        &Stroke::new(1.0),
+        Affine::IDENTITY,
+        Color::from_rgba8(0xE8, 0xC9, 0x7A, 120),
+        None,
+        &Circle::new((cx, cy), r_sun * 1.7),
+    );
+    // Punto interior violeta para contraste
+    scene.fill(
+        Fill::NonZero,
+        Affine::IDENTITY,
+        ACCENT_VIOLET,
+        None,
+        &Circle::new((cx, cy), r_sun * 0.35),
+    );
+}
+
+/// Path de la chacana centrada en el origen, con `u` como ancho de cada
+/// escalón. Reconstruye la forma clásica de 12 esquinas escalonadas
+/// (3 escalones por cada brazo cardinal).
+fn chacana_path(u: f64) -> BezPath {
+    let mut p = BezPath::new();
+    // Empezamos en la esquina superior-derecha del brazo norte y vamos
+    // en sentido horario alrededor de toda la cruz.
+    p.move_to((u, 3.0 * u));
+    p.line_to((u, u));
+    p.line_to((3.0 * u, u));
+    p.line_to((3.0 * u, -u));
+    p.line_to((u, -u));
+    p.line_to((u, -3.0 * u));
+    p.line_to((-u, -3.0 * u));
+    p.line_to((-u, -u));
+    p.line_to((-3.0 * u, -u));
+    p.line_to((-3.0 * u, u));
+    p.line_to((-u, u));
+    p.line_to((-u, 3.0 * u));
+    p.close_path();
+    p
+}
+
+#[cfg(target_os = "android")]
+fn install_panic_logger() {
+    std::panic::set_hook(Box::new(|info| {
+        let payload = info
+            .payload()
+            .downcast_ref::<&str>()
+            .copied()
+            .or_else(|| info.payload().downcast_ref::<String>().map(|s| s.as_str()))
+            .unwrap_or("<unknown>");
+        let loc = info
+            .location()
+            .map(|l| format!("{}:{}", l.file(), l.line()))
+            .unwrap_or_else(|| "<?>".into());
+        log::error!("PANIC at {loc} — {payload}");
+    }));
+}
+
+#[cfg(target_os = "android")]
+#[no_mangle]
+fn android_main(app: android_activity::AndroidApp) {
+    android_logger::init_once(
+        android_logger::Config::default()
+            .with_max_level(log::LevelFilter::Info)
+            .with_tag(TAG),
+    );
+    install_panic_logger();
+    log::info!("android_main START");
+
+    use llimphi_hal::winit::event_loop::EventLoopBuilder;
+    use llimphi_hal::winit::platform::android::EventLoopBuilderExtAndroid;
+
+    let event_loop: EventLoop<()> = match EventLoopBuilder::default().with_android_app(app).build()
+    {
+        Ok(el) => el,
+        Err(e) => {
+            log::error!("EventLoop: {e}");
+            return;
+        }
+    };
+    event_loop.set_control_flow(ControlFlow::Poll);
+    let mut handler = App::new();
+    if let Err(e) = event_loop.run_app(&mut handler) {
+        log::error!("run_app: {e}");
+    }
+}
diff --git a/android/vello-text-android/Cargo.toml b/android/vello-text-android/Cargo.toml
new file mode 100644
index 0000000..dd8cdf5
--- /dev/null
+++ b/android/vello-text-android/Cargo.toml
@@ -0,0 +1,44 @@
+[package]
+name = "vello-text-android"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "Tier 1.75 Android: parley + vello + llimphi-text rasterizando texto multi-script con fallback CJK/Arabic via fontique."
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+llimphi-hal = { path = "../../llimphi-hal" }
+llimphi-raster = { path = "../../llimphi-raster" }
+llimphi-text = { path = "../../llimphi-text" }
+winit = { workspace = true, features = ["android-native-activity"] }
+wgpu.workspace = true
+vello.workspace = true
+pollster.workspace = true
+# `log` se declara aquí (no en el bloque condicional Android) para que
+# `cargo check --workspace` en host pase: los macros de `log` son no-op
+# sin logger instalado. En Android, `android_logger` (más abajo) instala
+# el sink real hacia `logcat`.
+log = "0.4"
+
+[target.'cfg(target_os = "android")'.dependencies]
+android-activity = { version = "0.6", features = ["native-activity"] }
+android_logger = "0.14"
+
+[package.metadata.android]
+package = "net.gioser.llimphi.vellotext"
+build_targets = ["aarch64-linux-android", "x86_64-linux-android"]
+min_sdk_version = 24
+target_sdk_version = 34
+
+[package.metadata.android.application]
+label = "Llimphi · vello-text"
+debuggable = true
+
+[package.metadata.android.application.activity]
+config_changes = "orientation|screenSize|keyboardHidden"
+launch_mode = "singleTop"
+orientation = "unspecified"
diff --git a/android/vello-text-android/LEEME.md b/android/vello-text-android/LEEME.md
new file mode 100644
index 0000000..6a0c760
--- /dev/null
+++ b/android/vello-text-android/LEEME.md
@@ -0,0 +1,11 @@
+# vello-text-android
+
+> Text shaping Android de [llimphi](../../README.md).
+
+Dibuja texto con `vello` + `fontdue` sobre Android. Tercer hito: confirma que [`llimphi-text`](../../llimphi-text/README.md) shapea correctamente con DPI de móvil.
+
+## Build
+
+```sh
+cargo apk build -p vello-text-android
+```
diff --git a/android/vello-text-android/README.md b/android/vello-text-android/README.md
new file mode 100644
index 0000000..7d1f846
--- /dev/null
+++ b/android/vello-text-android/README.md
@@ -0,0 +1,11 @@
+# vello-text-android
+
+> Android text shaping of [llimphi](../../README.md).
+
+Draws text with `vello` + `fontdue` on Android. Third milestone: confirms [`llimphi-text`](../../llimphi-text/README.md) shapes correctly with mobile DPI.
+
+## Build
+
+```sh
+cargo apk build -p vello-text-android
+```
diff --git a/android/vello-text-android/src/lib.rs b/android/vello-text-android/src/lib.rs
new file mode 100644
index 0000000..234f7ad
--- /dev/null
+++ b/android/vello-text-android/src/lib.rs
@@ -0,0 +1,406 @@
+//! Tier 1.75 Android: texto multi-script con parley + vello + llimphi-text.
+//!
+//! Verifica que en Android funciona:
+//!  - parley::FontContext::new() resolviendo fuentes via fontique sobre
+//!    /system/fonts (Roboto + Noto fallback CJK/Arabic vienen en todas
+//!    las builds AOSP).
+//!  - shaping con kerning, ligaduras, bidi, fallback inter-script en
+//!    una misma línea.
+//!  - rasterización de glifos por vello::Scene::draw_glyphs (compute
+//!    pipeline sobre la intermediate Rgba8).
+//!
+//! Si esta corre estable y se ven los tres scripts (latino, arábigo,
+//! CJK) sin tofu (cuadrados vacíos), llimphi-ui está habilitado en
+//! Android — el resto de las apps (text-viewer, file-explorer,
+//! pluma-md-reader) usan exactamente esta misma pipa.
+//!
+//! El factor de scale por DPI se calcula desde el `inner_size` real
+//! del Window que Android nos pasa (ya incluye la densidad del
+//! display). En desktop el window es 960x540 lógico; en mobile típico
+//! es ~1080x2400 físico → fuentes 2-3× más grandes para legibilidad.
+
+use std::sync::Arc;
+use std::time::Instant;
+
+use llimphi_hal::winit::application::ApplicationHandler;
+use llimphi_hal::winit::event::WindowEvent;
+use llimphi_hal::winit::event_loop::{ActiveEventLoop, ControlFlow, EventLoop};
+use llimphi_hal::winit::window::{Window, WindowAttributes, WindowId};
+use llimphi_hal::{wgpu, Hal, Surface, WinitSurface};
+use llimphi_raster::peniko::Color;
+use llimphi_raster::vello;
+use llimphi_text::{draw_block, Alignment, TextBlock, Typesetter};
+
+const TAG: &str = "llimphi-text";
+
+const COSMOS_NIGHT: Color = Color::from_rgba8(0x0E, 0x10, 0x16, 255);
+const FG_TEXT: Color = Color::from_rgba8(0xD6, 0xDE, 0xE8, 255);
+const FG_MUTED: Color = Color::from_rgba8(0x8C, 0x98, 0xAA, 255);
+const ACCENT: Color = Color::from_rgba8(0x6E, 0x8C, 0xDC, 255);
+const AMBER: Color = Color::from_rgba8(0xE8, 0xC9, 0x7A, 255);
+
+const PARRAFO: &str = "Llimphi pinta vector preciso sobre el silicio: \
+geometrías exactas, sin cajas negras. شكراً 你好 こんにちは — el shaping \
+de parley maneja kerning, ligaduras y fallback CJK/Árabe en la misma \
+línea, resuelto por fontique sobre las fuentes Noto de Android.";
+
+const TECNICO: &str = "stack: wgpu(Vulkan) → llimphi-hal → vello compute → \
+parley shaping → fontique fallback. APK firmado v2, ~7 MB stripped.";
+
+struct State {
+    window: Arc<Window>,
+    hal: Hal,
+    surface: WinitSurface,
+    renderer: llimphi_raster::Renderer,
+    scene: vello::Scene,
+    typesetter: Typesetter,
+}
+
+struct App {
+    state: Option<State>,
+    frames: u64,
+    last_report: Instant,
+    /// `None` antes del primer present; al loguearse pasa a `Some` para
+    /// no spamear. Mide el tiempo "tiempo en pantalla" real del usuario.
+    first_paint: Option<Instant>,
+    started: Instant,
+}
+
+impl App {
+    fn new() -> Self {
+        Self {
+            state: None,
+            frames: 0,
+            last_report: Instant::now(),
+            first_paint: None,
+            started: Instant::now(),
+        }
+    }
+
+    fn boot(&self, event_loop: &ActiveEventLoop) -> Result<State, String> {
+        // Timings paso a paso — Android tarda 3-5s en el cold-start,
+        // queremos saber si es vello shader compile, fontique scan,
+        // request_device, o el primer render. `step` toma el delta
+        // desde la marca anterior y lo loguea.
+        let t0 = Instant::now();
+        let mut tprev = t0;
+        let mut step = |name: &str| {
+            let now = Instant::now();
+            let dt = now.duration_since(tprev);
+            let total = now.duration_since(t0);
+            log::info!(
+                "[boot+{:>5}ms] {} (+{}ms)",
+                total.as_millis(),
+                name,
+                dt.as_millis()
+            );
+            tprev = now;
+        };
+
+        step("0/9 START");
+        let window = event_loop
+            .create_window(WindowAttributes::default().with_title("llimphi · vello-text"))
+            .map_err(|e| format!("create_window: {e}"))?;
+        let window = Arc::new(window);
+        let size = window.inner_size();
+        step(&format!("1/9 Window {}x{}", size.width, size.height));
+
+        let instance = wgpu::Instance::new(&wgpu::InstanceDescriptor {
+            backends: wgpu::Backends::all(),
+            ..Default::default()
+        });
+        step("2/9 wgpu::Instance");
+
+        let surface = instance
+            .create_surface(window.clone())
+            .map_err(|e| format!("create_surface: {e}"))?;
+        step("3/9 Surface");
+
+        let adapter = pollster::block_on(instance.request_adapter(&wgpu::RequestAdapterOptions {
+            power_preference: wgpu::PowerPreference::HighPerformance,
+            force_fallback_adapter: false,
+            compatible_surface: Some(&surface),
+        }))
+        .ok_or_else(|| "request_adapter → None".to_string())?;
+        let info = adapter.get_info();
+        step(&format!("4/9 Adapter {:?} {}", info.backend, info.name));
+
+        let limits = wgpu::Limits::default().using_resolution(adapter.limits());
+        let (device, queue) = pollster::block_on(adapter.request_device(
+            &wgpu::DeviceDescriptor {
+                label: Some("vello-text-device"),
+                required_features: wgpu::Features::empty(),
+                required_limits: limits,
+                memory_hints: wgpu::MemoryHints::Performance,
+            },
+            None,
+        ))
+        .map_err(|e| format!("request_device: {e}"))?;
+        step("5/9 Device + Queue");
+
+        let hal = Hal {
+            instance,
+            adapter,
+            device,
+            queue,
+        };
+        step("6/9 Hal armado");
+
+        let surface = WinitSurface::from_surface(&hal, window.clone(), surface)
+            .map_err(|e| format!("WinitSurface: {e}"))?;
+        step("7/9 WinitSurface::from_surface");
+
+        // Sospechoso #1: vello compila ~20 shaders WGSL + crea pipelines
+        // de compute. En desktop ~150ms; en Adreno entry-level estimamos
+        // 1-3s. Si es esto, la solución es pipeline_cache persistente.
+        let renderer =
+            llimphi_raster::Renderer::new(&hal).map_err(|e| format!("Renderer: {e}"))?;
+        step("8/9 vello Renderer (shaders + pipelines)");
+
+        // Sospechoso #2: fontique escanea /system/fonts y parsea cada
+        // TTF/OTF para indexar metadata (family, style, scripts).
+        // Android tiene ~50-80 fuentes Noto + Roboto.
+        let typesetter = Typesetter::new();
+        step("9/9 Typesetter (fontique scan /system/fonts)");
+
+        log::info!(
+            "[boot ✓ total {}ms] stack texto listo",
+            t0.elapsed().as_millis()
+        );
+
+        window.request_redraw();
+        Ok(State {
+            window,
+            hal,
+            surface,
+            renderer,
+            scene: vello::Scene::new(),
+            typesetter,
+        })
+    }
+}
+
+impl ApplicationHandler for App {
+    fn resumed(&mut self, event_loop: &ActiveEventLoop) {
+        log::info!("Resumed");
+        match self.boot(event_loop) {
+            Ok(s) => self.state = Some(s),
+            Err(e) => log::error!("BOOT FAILED: {e}"),
+        }
+    }
+
+    fn suspended(&mut self, _event_loop: &ActiveEventLoop) {
+        log::info!("Suspended");
+        self.state = None;
+    }
+
+    fn window_event(
+        &mut self,
+        event_loop: &ActiveEventLoop,
+        _id: WindowId,
+        event: WindowEvent,
+    ) {
+        let Some(state) = self.state.as_mut() else {
+            return;
+        };
+        match event {
+            WindowEvent::CloseRequested => event_loop.exit(),
+            WindowEvent::Resized(size) => {
+                state.surface.resize(size.width, size.height);
+                state.window.request_redraw();
+            }
+            WindowEvent::RedrawRequested => {
+                let frame = match state.surface.acquire() {
+                    Ok(f) => f,
+                    Err(e) => {
+                        log::warn!("acquire {e}");
+                        let (w, h) = state.surface.size();
+                        state.surface.resize(w, h);
+                        state.window.request_redraw();
+                        return;
+                    }
+                };
+                let (w, h) = frame.size();
+                state.scene.reset();
+                paint_page(&mut state.scene, &mut state.typesetter, w, h);
+                if let Err(e) = state.renderer.render(
+                    &state.hal,
+                    &state.scene,
+                    &frame,
+                    COSMOS_NIGHT,
+                ) {
+                    log::error!("render: {e}");
+                }
+                state.surface.present(frame, &state.hal);
+
+                if self.first_paint.is_none() {
+                    let elapsed = self.started.elapsed();
+                    log::info!(
+                        "[FIRST PAINT] {}ms desde android_main START",
+                        elapsed.as_millis()
+                    );
+                    self.first_paint = Some(Instant::now());
+                }
+
+                self.frames += 1;
+                if self.last_report.elapsed().as_secs() >= 2 {
+                    let fps = self.frames as f64 / self.last_report.elapsed().as_secs_f64();
+                    log::info!("{fps:.1} fps · {w}x{h}");
+                    self.frames = 0;
+                    self.last_report = Instant::now();
+                }
+                // No request_redraw: el texto es estático, evita drenar batería.
+            }
+            _ => {}
+        }
+    }
+}
+
+/// Pinta la página completa de texto. Escala las fuentes proporcionales al
+/// ancho del viewport: en mobile (1080+ px) el texto queda ~1.4× más
+/// grande que en desktop (960 px) — lectura cómoda con device a 30 cm.
+fn paint_page(scene: &mut vello::Scene, ts: &mut Typesetter, w: u32, h: u32) {
+    // Escala lineal sobre el ancho del viewport. base = 1080 px → factor 1.0.
+    let scale = (w as f32 / 1080.0).clamp(0.6, 2.4);
+    let margin_x = (w as f64 * 0.06).max(24.0);
+    let margin_y = (h as f64 * 0.08).max(32.0);
+    let inner_w = (w as f32 - 2.0 * margin_x as f32).max(160.0);
+
+    // Título grande
+    draw_block(
+        scene,
+        ts,
+        &TextBlock {
+            text: "Llimphi",
+            size_px: 96.0 * scale,
+            color: FG_TEXT,
+            origin: (margin_x, margin_y),
+            max_width: Some(inner_w),
+            alignment: Alignment::Center,
+            line_height: 1.0,
+        
+            italic: false,
+            font_family: None,
+        },
+    );
+
+    // Subtítulo en accent
+    draw_block(
+        scene,
+        ts,
+        &TextBlock {
+            text: "texto multi-script sobre Android",
+            size_px: 22.0 * scale,
+            color: ACCENT,
+            origin: (margin_x, margin_y + (110.0 * scale as f64)),
+            max_width: Some(inner_w),
+            alignment: Alignment::Center,
+            line_height: 1.0,
+        
+            italic: false,
+            font_family: None,
+        },
+    );
+
+    // Línea separadora dorada (un guion largo en amber)
+    draw_block(
+        scene,
+        ts,
+        &TextBlock {
+            text: "—",
+            size_px: 32.0 * scale,
+            color: AMBER,
+            origin: (margin_x, margin_y + (155.0 * scale as f64)),
+            max_width: Some(inner_w),
+            alignment: Alignment::Center,
+            line_height: 1.0,
+        
+            italic: false,
+            font_family: None,
+        },
+    );
+
+    // Párrafo justificado con scripts mixtos
+    draw_block(
+        scene,
+        ts,
+        &TextBlock {
+            text: PARRAFO,
+            size_px: 22.0 * scale,
+            color: FG_TEXT,
+            origin: (margin_x, margin_y + (220.0 * scale as f64)),
+            max_width: Some(inner_w),
+            alignment: Alignment::Justify,
+            line_height: 1.5,
+        
+            italic: false,
+            font_family: None,
+        },
+    );
+
+    // Pie técnico mute
+    draw_block(
+        scene,
+        ts,
+        &TextBlock {
+            text: TECNICO,
+            size_px: 16.0 * scale,
+            color: FG_MUTED,
+            origin: (margin_x, h as f64 - margin_y - (50.0 * scale as f64)),
+            max_width: Some(inner_w),
+            alignment: Alignment::Start,
+            line_height: 1.3,
+        
+            italic: false,
+            font_family: None,
+        },
+    );
+}
+
+#[cfg(target_os = "android")]
+fn install_panic_logger() {
+    std::panic::set_hook(Box::new(|info| {
+        let payload = info
+            .payload()
+            .downcast_ref::<&str>()
+            .copied()
+            .or_else(|| info.payload().downcast_ref::<String>().map(|s| s.as_str()))
+            .unwrap_or("<unknown>");
+        let loc = info
+            .location()
+            .map(|l| format!("{}:{}", l.file(), l.line()))
+            .unwrap_or_else(|| "<?>".into());
+        log::error!("PANIC at {loc} — {payload}");
+    }));
+}
+
+#[cfg(target_os = "android")]
+#[no_mangle]
+fn android_main(app: android_activity::AndroidApp) {
+    android_logger::init_once(
+        android_logger::Config::default()
+            .with_max_level(log::LevelFilter::Info)
+            .with_tag(TAG),
+    );
+    install_panic_logger();
+    log::info!("android_main START");
+
+    use llimphi_hal::winit::event_loop::EventLoopBuilder;
+    use llimphi_hal::winit::platform::android::EventLoopBuilderExtAndroid;
+
+    let event_loop: EventLoop<()> = match EventLoopBuilder::default().with_android_app(app).build()
+    {
+        Ok(el) => el,
+        Err(e) => {
+            log::error!("EventLoop: {e}");
+            return;
+        }
+    };
+    // Wait (no Poll): el texto es estático, el redraw lo dispara
+    // Resized/Resumed. Ahorra batería vs vello-hello que anima.
+    event_loop.set_control_flow(ControlFlow::Wait);
+    let mut handler = App::new();
+    if let Err(e) = event_loop.run_app(&mut handler) {
+        log::error!("run_app: {e}");
+    }
+}
diff --git a/llimphi-compositor/Cargo.toml b/llimphi-compositor/Cargo.toml
new file mode 100644
index 0000000..49bcc92
--- /dev/null
+++ b/llimphi-compositor/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "llimphi-compositor"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-compositor — el núcleo declarativo de Llimphi sin winit: el árbol `View<Msg>`, el mount sobre taffy, el paint a `vello::Scene` y el hit-test. No depende de llimphi-hal ni de una surface concreta, así que la misma composición sirve sobre winit (llimphi-ui) o, a futuro, sobre el framebuffer del kernel wawa. `wgpu` entra sólo por la firma de `GpuPaintFn` (tipos, no windowing)."
+
+[dependencies]
+llimphi-layout = { path = "../llimphi-layout" }
+llimphi-text = { path = "../llimphi-text" }
+vello = { workspace = true }
+# Sólo para los tipos de la firma de GpuPaintFn (Device/Queue/Encoder/View).
+# wgpu NO depende de winit — el compositor sigue libre de windowing.
+wgpu = { workspace = true }
diff --git a/llimphi-compositor/src/lib.rs b/llimphi-compositor/src/lib.rs
new file mode 100644
index 0000000..7172d2c
--- /dev/null
+++ b/llimphi-compositor/src/lib.rs
@@ -0,0 +1,348 @@
+//! llimphi-compositor — el núcleo declarativo de Llimphi, sin winit.
+//!
+//! Aquí vive el árbol de vista `View<Msg>` (DSL declarativo), su instalación
+//! sobre taffy (`mount`), el pintado a `vello::Scene` (`paint`/`paint_gpu`) y
+//! el hit-test. Nada de esto necesita una ventana ni `llimphi-hal`: la
+//! composición `view → layout → scene` es pura y reutilizable.
+//!
+//! El runtime que la maneja vive aparte:
+//! - `llimphi-ui` la corre sobre winit (`run<A: App>()`).
+//! - a futuro, un runtime sobre el framebuffer del kernel `wawa` puede
+//!   reusar exactamente este compositor sin arrastrar winit.
+//!
+//! `wgpu` entra sólo por la firma de [`GpuPaintFn`] (tipos de Device/Queue/
+//! Encoder/TextureView); `wgpu` no depende de winit, así que el compositor
+//! sigue libre de windowing.
+
+use std::collections::HashMap;
+use std::sync::Arc;
+
+use llimphi_layout::taffy::NodeId;
+use llimphi_layout::{ComputedLayout, LayoutTree, Style};
+use vello::kurbo::{Affine, Point, Rect as KurboRect, RoundedRect};
+use vello::peniko::{Color, Fill, Image, Mix};
+
+mod render;
+mod view;
+pub use render::*;
+
+/// Texto a pintar dentro de un nodo. Alineación por defecto `Center`
+/// (horizontal y vertical), apta para labels de botón. Para layouts tipo
+/// editor o párrafo, usar `.text_aligned(...)` con `Alignment::Start`.
+pub struct TextSpec {
+    pub content: String,
+    pub size_px: f32,
+    pub color: Color,
+    pub alignment: llimphi_text::Alignment,
+    /// `true` = forzar variante italic en la fuente activa. Default false.
+    pub italic: bool,
+    /// CSS-style font-family string (acepta lista con fallbacks). `None`
+    /// = la fuente default de parley.
+    pub font_family: Option<String>,
+    /// Múltiplo de interlínea (`line-height` / `font-size`). 1.2 es el
+    /// default que usaban todos los callers; puriy lo sobreescribe con el
+    /// valor computado de CSS. Se usa tanto al **medir** (para que taffy
+    /// reserve el alto correcto) como al **pintar**, así medida y dibujo
+    /// coinciden.
+    pub line_height: f32,
+    /// Colores por rango de **bytes** sobre `content`, para texto multicolor
+    /// (syntax highlighting) en una sola pasada de shaping. `None` = color
+    /// uniforme (`color`). Cuando es `Some`, el runtime usa
+    /// `Typesetter::layout_runs` + `draw_layout_runs`, y `color` actúa como
+    /// color por defecto de lo no cubierto por ningún run.
+    pub runs: Option<Vec<(usize, usize, Color)>>,
+}
+
+/// Fase de un drag activo. `Move` se emite por cada `CursorMoved` con el
+/// delta desde el evento anterior; `End` se emite al soltar el botón.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum DragPhase {
+    Move,
+    End,
+}
+
+/// Handler de drag. Recibe la fase + delta (`dx`, `dy`) **desde el evento
+/// anterior** (no acumulado desde el press). Devolver `None` deja el drag
+/// activo sin disparar Msg. `Arc<dyn Fn>` para que el runtime pueda
+/// clonarlo barato al iniciar el drag y mantenerlo vivo aunque el cache
+/// de la vista se regenere mientras tanto.
+pub type DragFn<Msg> = Arc<dyn Fn(DragPhase, f32, f32) -> Option<Msg> + Send + Sync>;
+
+/// Handler de drop. El runtime lo invoca cuando un drag activo se suelta
+/// sobre este nodo. Recibe el `payload` `u64` que el origen del drag
+/// declaró vía [`View::drag_payload`]. Devolver `None` ignora el drop.
+///
+/// Los IDs `u64` son opacos para el runtime: el widget elige una
+/// convención (índice de tile, hash del item, etc.) y el handler decide
+/// qué Msg emitir en función de ese ID.
+pub type DropFn<Msg> = Arc<dyn Fn(u64) -> Option<Msg> + Send + Sync>;
+
+/// Handler de click con posición. Recibe `(x_local, y_local, rect_w,
+/// rect_h)`: las dos primeras son la posición del cursor **relativa a
+/// la esquina superior-izquierda del nodo** y las dos últimas son el
+/// ancho/alto actual del nodo en pixels — útil cuando el caller
+/// necesita centrar o normalizar. Devolver `None` no dispara update.
+pub type ClickAtFn<Msg> = Arc<dyn Fn(f32, f32, f32, f32) -> Option<Msg> + Send + Sync>;
+
+/// Handler de rueda **local a un nodo**. Recibe el delta `(dx, dy)` en
+/// líneas lógicas (misma normalización que `App::on_wheel`: `dy` positivo
+/// = scroll hacia abajo). El runtime lo invoca cuando la rueda gira con el
+/// cursor sobre este nodo, ANTES de caer al `App::on_wheel` global: si el
+/// handler devuelve `Some(Msg)`, el evento se consume acá. Permite áreas
+/// de scroll autocontenidas (el widget `scroll` lo usa) sin que cada app
+/// rutee la rueda a mano por su `Model`. Devolver `None` deja pasar el
+/// evento al `on_wheel` global.
+pub type ScrollFn<Msg> = Arc<dyn Fn(f32, f32) -> Option<Msg> + Send + Sync>;
+
+/// Variante de [`DragFn`] que **conoce la posición inicial del press**
+/// relativa al rect del nodo. Útil cuando el caller necesita identificar
+/// qué entidad (Concepto, lemming, etc.) bajo el cursor agarró el drag.
+/// Recibe `(phase, dx, dy, initial_lx, initial_ly)`.
+pub type DragAtFn<Msg> = Arc<dyn Fn(DragPhase, f32, f32, f32, f32) -> Option<Msg> + Send + Sync>;
+
+/// Rect absoluto del nodo (en coordenadas físicas del frame). Lo
+/// recibe el callback de [`View::paint_with`] para que pueda
+/// posicionar sus primitivas custom dentro del nodo.
+#[derive(Debug, Clone, Copy, Default)]
+pub struct PaintRect {
+    pub x: f32,
+    pub y: f32,
+    pub w: f32,
+    pub h: f32,
+}
+
+/// Callback de pintura custom. El runtime lo invoca durante el paint
+/// del nodo (entre el `fill`/`image` y el `text`) con el `Scene` vivo
+/// + el `Typesetter` cacheado del runtime + el rect absoluto del nodo.
+/// Pensado para "canvas elements" tipo `dominium-canvas`,
+/// `pluma-editor` (osciloscopio de coherencia), `cosmos` (charts).
+///
+/// El `Typesetter` se pasa porque crearlo por frame es caro
+/// (`FontContext::new` enumera las fontes del sistema vía fontique).
+/// Los callers que no necesiten texto pueden ignorar el argumento.
+///
+/// El callback no debe llamar a `scene.push_layer` sin un `pop_layer`
+/// correspondiente, ni reset el scene — sólo agregar primitivas que
+/// pertenezcan al rect del nodo.
+pub type PaintFn = Arc<
+    dyn Fn(&mut vello::Scene, &mut llimphi_text::Typesetter, PaintRect) + Send + Sync,
+>;
+
+/// Callback de pintura GPU directo, sin vello intermedio. Recibe el
+/// `device`/`queue` ya construidos por el runtime más un
+/// `CommandEncoder` y la `TextureView` del frame (la intermediate
+/// `Rgba8Unorm` de `WinitSurface`), todo durante el paint del nodo.
+///
+/// El caller abre su propio `begin_render_pass` con `LoadOp::Load` para
+/// no sobrescribir lo que ya pintó vello, dibuja sus primitivas y
+/// cierra el pass. El runtime se encarga de dispatchear (`queue.submit`)
+/// el encoder ya con todas las pasadas de todos los nodos acumuladas —
+/// es un solo submit por frame.
+///
+/// **Orden de pintura en Fase 1**: todos los `gpu_painter` corren
+/// DESPUÉS de la pasada completa de vello (fill, image, painter,
+/// text) sobre el `mounted` tree. Entre sí mantienen el orden DFS
+/// pre-orden. Si una app necesita pintar texto **encima** del render
+/// GPU directo, la forma idiomática es ponerlo en `App::view_overlay`,
+/// que se renderiza como una segunda Scene de vello encima de todo.
+///
+/// Pensado para apps con volumen masivo de primitivos (cosmos
+/// starfield Gaia, tinkuy particle viewer, nakui viewport, pineal
+/// denso) — el hook que paga el costo de mantener pipelines WGSL
+/// propias en `llimphi-raster` (ver `02_ruway/llimphi/SDD.md`
+/// §"Roadmap — GPU directo wgpu").
+pub type GpuPaintFn = Arc<
+    dyn Fn(
+            &wgpu::Device,
+            &wgpu::Queue,
+            &mut wgpu::CommandEncoder,
+            &wgpu::TextureView,
+            PaintRect,
+            (u32, u32),
+        ) + Send
+        + Sync,
+>;
+
+/// Nodo de la vista declarativa. Estilo de layout (taffy) + relleno opcional
+/// (vello) + texto opcional (skrifa+vello) + Msg al click opcional + hijos.
+pub struct View<Msg> {
+    pub style: Style,
+    pub fill: Option<Color>,
+    /// Relleno cuando el cursor está sobre este nodo. Sin valor (`None`)
+    /// = no se reacciona al hover.
+    pub hover_fill: Option<Color>,
+    pub radius: f64,
+    pub text: Option<TextSpec>,
+    /// Imagen a pintar dentro del rect del nodo. Se centra y escala
+    /// preservando aspect ratio (`min(rect.w/img.w, rect.h/img.h)`).
+    /// El alfa por píxel de la imagen y el `Image::alpha` global se
+    /// respetan; el `fill` (si lo hay) se pinta debajo como background.
+    pub image: Option<Image>,
+    /// Callback de pintura custom. Si está presente, el runtime lo
+    /// invoca durante el paint del nodo con el `Scene` vivo + el rect
+    /// absoluto. Pensado para "canvas elements" (dominium, pluma,
+    /// cosmos) que pintan primitivas custom no expresables como una
+    /// composición de Views.
+    pub painter: Option<PaintFn>,
+    /// Pintor GPU directo. Se invoca DESPUÉS de la pasada vello del
+    /// frame; comparte tree y orden DFS con los demás. Ver
+    /// [`GpuPaintFn`].
+    pub gpu_painter: Option<GpuPaintFn>,
+    pub on_click: Option<Msg>,
+    /// Handler de click que recibe la posición **relativa al rect del
+    /// nodo** (esquina superior-izquierda del nodo = `(0, 0)`). Útil
+    /// para canvas elements que quieren mapear el click a coordenadas
+    /// de mundo. Si está presente, gana sobre `on_click`. Devolver
+    /// `None` no dispara update.
+    pub on_click_at: Option<ClickAtFn<Msg>>,
+    /// Equivalente a `on_click` pero para el botón derecho del ratón.
+    /// Pensado para menús contextuales: el nodo declara qué `Msg`
+    /// emitir cuando se le hace right-click, y la app abre el overlay
+    /// con el menú.
+    pub on_right_click: Option<Msg>,
+    /// Variante posicional de [`Self::on_right_click`]. Útil para
+    /// grillas que necesitan saber *qué celda* del rect recibió el
+    /// click derecho (la celda no es un nodo aparte, sino una región
+    /// dentro del nodo). Si está presente, gana sobre `on_right_click`.
+    pub on_right_click_at: Option<ClickAtFn<Msg>>,
+    /// Equivalente a `on_click` pero para el botón del medio del ratón
+    /// (rueda presionada). Pensado para abrir en pestaña nueva — los
+    /// browsers usan middle-click como atajo equivalente a Ctrl+Click.
+    pub on_middle_click: Option<Msg>,
+    /// Handler de drag. Si está presente, este nodo arrastra (y NO emite
+    /// `on_click` al presionar — un nodo es uno u otro).
+    pub drag: Option<DragFn<Msg>>,
+    /// Variante de drag que recibe la posición inicial del press relativa
+    /// al rect del nodo. Gana sobre `drag` si ambos están presentes.
+    pub drag_at: Option<DragAtFn<Msg>>,
+    /// Payload `u64` que viaja con el drag iniciado sobre este nodo. Lo
+    /// recibe el handler [`Self::on_drop`] del drop target. Sin payload,
+    /// el drag funciona igual pero ningún drop target reacciona.
+    pub drag_payload: Option<u64>,
+    /// Handler invocado al soltar un drag sobre este nodo (drop target).
+    pub on_drop: Option<DropFn<Msg>>,
+    /// Color a pintar mientras un drag activo está hovereando este drop
+    /// target. Sobrepone a `fill`/`hover_fill` cuando aplica.
+    pub drop_hover_fill: Option<Color>,
+    /// Si `true`, los descendientes se recortan al rect del nodo (vía
+    /// `scene.push_layer` con `Mix::Clip`). El hit-test también respeta
+    /// el recorte: clicks fuera del rect ignoran a los hijos.
+    pub clip: bool,
+    /// Msg a emitir cuando el cursor entra al rect del nodo (transición
+    /// no-hover → hover). Útil para previews tipo "URL del link al
+    /// pasar el mouse".
+    pub on_pointer_enter: Option<Msg>,
+    /// Msg a emitir cuando el cursor sale del rect del nodo.
+    pub on_pointer_leave: Option<Msg>,
+    /// Handler de rueda local. Si está presente y el cursor cae sobre este
+    /// nodo, el runtime lo invoca antes del `App::on_wheel` global; un
+    /// `Some(Msg)` consume el evento. Base de las áreas de scroll
+    /// autocontenidas. Ver [`ScrollFn`].
+    pub on_scroll: Option<ScrollFn<Msg>>,
+    /// Marca este nodo como **enfocable** con el id opaco `u64`. El runtime
+    /// mantiene el foco (uno por ventana) y lo mueve con Tab/Shift+Tab en
+    /// orden de árbol (pre-orden) y al clickear un nodo enfocable; notifica
+    /// a la app vía `App::on_focus` para que pinte el ring y rutee el
+    /// teclado. El id lo elige el caller (índice de campo, hash, etc.).
+    pub focusable: Option<u64>,
+    /// Opacidad multiplicada sobre TODO el subtree (este nodo + hijos),
+    /// en `[0.0, 1.0]`. Se realiza con `scene.push_layer(Mix::Normal, a, …)`
+    /// alrededor del rect del nodo: el subárbol se rasteriza en una capa
+    /// intermedia y se compone al alfa indicado contra lo que ya hay
+    /// detrás. `None` = sin capa (caso de la abrumadora mayoría de
+    /// nodos). Útil para fade-in/out de overlays, ghosts mientras se
+    /// arrastra, modales que aparecen, panels "vidrio". Note que la
+    /// composición tiene costo (allocate + blit), por lo que sólo
+    /// poblar este slot cuando hace falta — no es un atributo gratis.
+    pub alpha: Option<f32>,
+    /// Transformación afín 2D aplicada a este nodo y todo su subtree
+    /// **alrededor del centro de su propio rect** (convención CSS
+    /// `transform-origin: 50% 50%`). El runtime resuelve el centro en
+    /// `paint` (sólo entonces conoce el layout computado) y compone
+    /// `T(centro) · transform · T(-centro)` sobre la transformación
+    /// acumulada del padre, así nodos anidados transforman en el espacio
+    /// ya transformado de su ancestro — igual que CSS. `None` = identidad
+    /// (la abrumadora mayoría de nodos). Pensado para `transform`/
+    /// `@keyframes` CSS de puriy (rotate/scale/translate). El hit-test
+    /// **respeta** el afín (un nodo transformado recibe clicks donde se ve
+    /// pintado). Limitación restante: los `painter`/`runs` custom no heredan
+    /// el afín, y la posición local que reciben los handlers `*_at` se
+    /// reporta en espacio de pantalla, no en el espacio local del nodo.
+    pub transform: Option<Affine>,
+    /// Texto de **tooltip**: si está, el runtime/cliente puede mostrar un
+    /// rótulo flotante cuando el cursor se posa sobre este nodo. Llimphi sólo
+    /// transporta el dato hasta el [`MountedNode`]; *quién* lo pinta (un overlay
+    /// del runtime, una surface popup del cliente) lo decide el consumidor. El
+    /// hit-test de hover ya localiza el nodo bajo el cursor. `None` = sin tip.
+    pub tooltip: Option<String>,
+    pub children: Vec<View<Msg>>,
+}
+
+/// Versión "instalada" del árbol: cada nodo tiene su NodeId de taffy, color
+/// y handler. Se mantiene en orden de inserción (recorrido pre-orden), así
+/// el hit-test puede iterar al revés para honrar el orden de pintado.
+///
+/// `pub` (con campos `pub`) porque el runtime (llimphi-ui) lee el árbol
+/// montado para hit-test y para la pasada GPU directa, pero vive en otro
+/// crate. No se construye fuera de [`mount`].
+pub struct Mounted<Msg> {
+    pub root: NodeId,
+    pub nodes: Vec<MountedNode<Msg>>,
+    /// Contenido de texto por nodo-hoja, para que el runtime lo mida con
+    /// parley durante `compute_with_measure` y taffy reserve el alto real
+    /// del texto envuelto (varias líneas) en vez de una sola. Sin esto un
+    /// párrafo que envuelve a N líneas se aplastaría en la altura de una
+    /// (el bug clásico de "textos aplastados"). Sólo se pueblan hojas con
+    /// texto uniforme (sin `runs` multicolor, que el caller dimensiona).
+    pub text_measures: HashMap<NodeId, TextMeasure>,
+}
+
+/// Datos de un nodo-hoja de texto necesarios para medirlo (shaping +
+/// line-break) sin volver a tocar el `View`. Lo consume el runtime en la
+/// función de medición que le pasa a [`LayoutTree::compute_with_measure`].
+#[derive(Clone)]
+pub struct TextMeasure {
+    pub content: String,
+    pub size_px: f32,
+    pub alignment: llimphi_text::Alignment,
+    pub italic: bool,
+    pub font_family: Option<String>,
+    pub line_height: f32,
+}
+
+pub struct MountedNode<Msg> {
+    pub id: NodeId,
+    pub fill: Option<Color>,
+    pub hover_fill: Option<Color>,
+    pub radius: f64,
+    pub text: Option<TextSpec>,
+    pub image: Option<Image>,
+    pub painter: Option<PaintFn>,
+    pub gpu_painter: Option<GpuPaintFn>,
+    pub on_click: Option<Msg>,
+    pub on_click_at: Option<ClickAtFn<Msg>>,
+    pub on_right_click: Option<Msg>,
+    pub on_right_click_at: Option<ClickAtFn<Msg>>,
+    pub on_middle_click: Option<Msg>,
+    pub drag: Option<DragFn<Msg>>,
+    pub drag_at: Option<DragAtFn<Msg>>,
+    pub drag_payload: Option<u64>,
+    pub on_drop: Option<DropFn<Msg>>,
+    pub drop_hover_fill: Option<Color>,
+    pub clip: bool,
+    pub on_pointer_enter: Option<Msg>,
+    pub on_pointer_leave: Option<Msg>,
+    pub on_scroll: Option<ScrollFn<Msg>>,
+    pub focusable: Option<u64>,
+    pub alpha: Option<f32>,
+    /// Transformación afín 2D del nodo (alrededor del centro de su rect).
+    /// Ver [`View::transform`]. `paint` la compone con la del padre.
+    pub transform: Option<Affine>,
+    /// Texto de tooltip de este nodo (ver [`View::tooltip`]). El consumidor lo
+    /// lee tras un hit-test de hover para pintar el rótulo flotante.
+    pub tooltip: Option<String>,
+    /// Índice (exclusivo) del fin del subárbol en `Mounted::nodes`. Los
+    /// descendientes ocupan `[idx + 1, subtree_end)`. Hace de "barrera" en
+    /// paint/hit_test para `pop_layer` y para saltar subárboles enteros.
+    pub subtree_end: usize,
+}
diff --git a/llimphi-compositor/src/render.rs b/llimphi-compositor/src/render.rs
new file mode 100644
index 0000000..074e815
--- /dev/null
+++ b/llimphi-compositor/src/render.rs
@@ -0,0 +1,705 @@
+use super::*;
+
+pub fn mount<Msg: Clone>(layout: &mut LayoutTree, v: View<Msg>) -> Mounted<Msg> {
+    let mut nodes = Vec::new();
+    let mut text_measures = std::collections::HashMap::new();
+    let root = mount_recursive(layout, v, &mut nodes, &mut text_measures);
+    Mounted { root, nodes, text_measures }
+}
+
+/// Mount en pre-orden directo sobre `out`: pusheamos el padre como
+/// placeholder (id real desconocido hasta crear el taffy node), recursamos
+/// hijos sobre el mismo `out`, y al volver completamos `id` + `subtree_end`.
+pub fn mount_recursive<Msg: Clone>(
+    layout: &mut LayoutTree,
+    v: View<Msg>,
+    out: &mut Vec<MountedNode<Msg>>,
+    text_measures: &mut std::collections::HashMap<NodeId, TextMeasure>,
+) -> NodeId {
+    let View {
+        style,
+        fill,
+        hover_fill,
+        radius,
+        text,
+        image,
+        painter,
+        gpu_painter,
+        on_click,
+        on_click_at,
+        on_right_click,
+        on_right_click_at,
+        on_middle_click,
+        drag,
+        drag_at,
+        drag_payload,
+        on_drop,
+        drop_hover_fill,
+        clip,
+        on_pointer_enter,
+        on_pointer_leave,
+        on_scroll,
+        focusable,
+        alpha,
+        transform,
+        tooltip,
+        children,
+    } = v;
+    let parent_idx = out.len();
+    out.push(MountedNode {
+        id: NodeId::new(0), // placeholder, lo sobreescribimos abajo
+        fill,
+        hover_fill,
+        radius,
+        text,
+        image,
+        painter,
+        gpu_painter,
+        on_click,
+        on_click_at,
+        on_right_click,
+        on_right_click_at,
+        on_middle_click,
+        drag,
+        drag_at,
+        drag_payload,
+        on_drop,
+        drop_hover_fill,
+        clip,
+        on_pointer_enter,
+        on_pointer_leave,
+        on_scroll,
+        focusable,
+        alpha,
+        transform,
+        tooltip,
+        subtree_end: 0,
+    });
+    let mut child_ids = Vec::with_capacity(children.len());
+    for child in children {
+        child_ids.push(mount_recursive(layout, child, out, text_measures));
+    }
+    let id = if child_ids.is_empty() {
+        layout.leaf(style).expect("layout leaf")
+    } else {
+        layout.node(style, &child_ids).expect("layout node")
+    };
+    out[parent_idx].id = id;
+    out[parent_idx].subtree_end = out.len();
+    // Hoja de texto uniforme: registrá su contenido para que el runtime lo
+    // mida con parley. El texto multicolor (`runs`) lo dimensiona el caller
+    // (editor: un nodo por línea), así que no lo medimos acá.
+    if child_ids.is_empty() {
+        if let Some(text) = out[parent_idx].text.as_ref() {
+            if text.runs.is_none() {
+                text_measures.insert(
+                    id,
+                    TextMeasure {
+                        content: text.content.clone(),
+                        size_px: text.size_px,
+                        alignment: text.alignment,
+                        italic: text.italic,
+                        font_family: text.font_family.clone(),
+                        line_height: text.line_height,
+                    },
+                );
+            }
+        }
+    }
+    id
+}
+
+/// Mide una hoja de texto para taffy: shaping + line-break con parley contra
+/// el ancho disponible, devolviendo el bounding box. Si el ancho ya está
+/// resuelto (`known.width`) se usa ese; si no, se deriva del `available`
+/// (Definite → ese ancho; MaxContent → sin límite = una línea; MinContent →
+/// 0 = envuelve a la palabra más ancha). El `line_height` sale del propio
+/// `TextMeasure`, el mismo que usa `paint`, así medida y pintado coinciden.
+pub fn measure_text_node(
+    ts: &mut llimphi_text::Typesetter,
+    tm: &TextMeasure,
+    known: llimphi_layout::taffy::Size<Option<f32>>,
+    available: llimphi_layout::taffy::Size<llimphi_layout::taffy::AvailableSpace>,
+) -> llimphi_layout::taffy::Size<f32> {
+    use llimphi_layout::taffy::AvailableSpace;
+    let max_width: Option<f32> = known.width.or(match available.width {
+        AvailableSpace::Definite(w) => Some(w),
+        AvailableSpace::MaxContent => None,
+        AvailableSpace::MinContent => Some(0.0),
+    });
+    let block = llimphi_text::TextBlock {
+        text: &tm.content,
+        size_px: tm.size_px,
+        color: Color::BLACK,
+        origin: (0.0, 0.0),
+        max_width,
+        alignment: tm.alignment,
+        line_height: tm.line_height,
+        italic: tm.italic,
+        font_family: tm.font_family.clone(),
+    };
+    let m = llimphi_text::measure(ts, &block);
+    llimphi_layout::taffy::Size { width: m.width, height: m.height }
+}
+
+pub fn paint<Msg>(
+    scene: &mut vello::Scene,
+    mounted: &Mounted<Msg>,
+    computed: &ComputedLayout,
+    typesetter: &mut llimphi_text::Typesetter,
+    hover_idx: Option<usize>,
+    drop_hover_idx: Option<usize>,
+) {
+    // Stack de subtree_end de los `push_layer` activos (clip y/o alpha).
+    // Vello requiere pop_layer en orden LIFO estricto, así que mantenemos
+    // un único stack común y popeamos en el orden en que se pushearon.
+    // Dos entradas con el mismo `subtree_end` (alpha + clip sobre el
+    // mismo nodo) se cierran en el orden inverso al push.
+    let mut layer_stack: Vec<usize> = Vec::new();
+    // Stack de transformaciones afines de subtree. Cada entrada guarda el
+    // `subtree_end` y la `cur_xf` previa para restaurarla al salir del
+    // subárbol. `cur_xf` es el producto acumulado de todos los `transform`
+    // de los ancestros activos — se multiplica en cada draw call. Cuando
+    // ningún nodo transforma, queda en `IDENTITY` y el paint es idéntico
+    // al previo (cero regresión).
+    let mut xf_stack: Vec<(usize, Affine)> = Vec::new();
+    let mut cur_xf = Affine::IDENTITY;
+    for (idx, node) in mounted.nodes.iter().enumerate() {
+        // Cierre de capas que ya quedaron atrás (idx ≥ subtree_end).
+        while let Some(&end) = layer_stack.last() {
+            if idx >= end {
+                scene.pop_layer();
+                layer_stack.pop();
+            } else {
+                break;
+            }
+        }
+        // Restaurá la transformación al salir de subárboles transformados.
+        while let Some(&(end, prev)) = xf_stack.last() {
+            if idx >= end {
+                cur_xf = prev;
+                xf_stack.pop();
+            } else {
+                break;
+            }
+        }
+        let Some(r) = computed.get(node.id) else {
+            continue;
+        };
+        // Transform CSS del nodo: se aplica alrededor del centro de su rect
+        // (`transform-origin: 50% 50%`) y se compone sobre la del padre. Se
+        // empuja ANTES del alpha/fill para que toda la pintura del subtree
+        // (incl. la capa de alpha y el clip) caiga en el espacio transformado.
+        if let Some(local) = node.transform {
+            let cx = (r.x + r.w * 0.5) as f64;
+            let cy = (r.y + r.h * 0.5) as f64;
+            let centered =
+                Affine::translate((cx, cy)) * local * Affine::translate((-cx, -cy));
+            xf_stack.push((node.subtree_end, cur_xf));
+            cur_xf *= centered;
+        }
+        // Alpha de subtree: push ANTES de cualquier paint de este nodo
+        // para que fill/text/image/painter/children entren en la misma
+        // capa y se compongan juntos al alfa indicado. Si el nodo tiene
+        // hijos, su `subtree_end > idx + 1` y la capa permanece abierta
+        // hasta que el loop alcance el primer índice fuera del subárbol.
+        // Para nodos hoja con alpha el push y el pop son consecutivos —
+        // funcionalmente equivalente a multiplicar el alpha del fill,
+        // pero permite usar el mismo API sin distinguir hoja vs rama.
+        if let Some(a) = node.alpha {
+            let rect = KurboRect::new(
+                r.x as f64,
+                r.y as f64,
+                (r.x + r.w) as f64,
+                (r.y + r.h) as f64,
+            );
+            scene.push_layer(Mix::Normal, a, cur_xf, &rect);
+            layer_stack.push(node.subtree_end);
+        }
+        // Prioridad de pintura: drop-hover (drag activo) > hover normal >
+        // fill base. Solo aplica el override si el slot correspondiente
+        // está poblado; el siguiente cae como fallback.
+        let effective_fill = if Some(idx) == drop_hover_idx {
+            node.drop_hover_fill.or(node.hover_fill).or(node.fill)
+        } else if Some(idx) == hover_idx {
+            node.hover_fill.or(node.fill)
+        } else {
+            node.fill
+        };
+        if let Some(color) = effective_fill {
+            let rr = RoundedRect::new(
+                r.x as f64,
+                r.y as f64,
+                (r.x + r.w) as f64,
+                (r.y + r.h) as f64,
+                node.radius,
+            );
+            scene.fill(Fill::NonZero, cur_xf, color, None, &rr);
+        }
+        if let Some(image) = node.image.as_ref() {
+            // Aspect-fit centrado: el min de las dos escalas ocupa
+            // todo el rect en el eje más restrictivo y deja banda en
+            // el otro. Defensivo: envolvemos en push_layer/pop_layer
+            // con el rect del nodo para que, aunque el caller pida
+            // un layout mal-dimensionado, la imagen nunca pinte fuera
+            // del nodo (visualmente preferible a un overflow opaco).
+            if image.width > 0 && image.height > 0 && r.w > 0.0 && r.h > 0.0 {
+                let sx = r.w as f64 / image.width as f64;
+                let sy = r.h as f64 / image.height as f64;
+                let s = sx.min(sy);
+                let disp_w = image.width as f64 * s;
+                let disp_h = image.height as f64 * s;
+                let tx = r.x as f64 + (r.w as f64 - disp_w) * 0.5;
+                let ty = r.y as f64 + (r.h as f64 - disp_h) * 0.5;
+                let transform = Affine::translate((tx, ty)) * Affine::scale(s);
+                let node_rect = KurboRect::new(
+                    r.x as f64,
+                    r.y as f64,
+                    (r.x + r.w) as f64,
+                    (r.y + r.h) as f64,
+                );
+                scene.push_layer(Mix::Clip, 1.0, cur_xf, &node_rect);
+                scene.draw_image(image, cur_xf * transform);
+                scene.pop_layer();
+            }
+        }
+        if let Some(painter) = node.painter.as_ref() {
+            (painter)(
+                scene,
+                typesetter,
+                PaintRect {
+                    x: r.x,
+                    y: r.y,
+                    w: r.w,
+                    h: r.h,
+                },
+            );
+        }
+        if let Some(text) = node.text.as_ref() {
+            if let Some(runs) = text.runs.as_ref() {
+                // Texto multicolor (syntax highlighting): una sola pasada de
+                // shaping con color por rango, anclado arriba-izquierda. Cae
+                // por el flujo normal (clip/alpha se cierran como siempre).
+                let layout = typesetter.layout_runs(
+                    &text.content,
+                    text.size_px,
+                    text.color,
+                    runs,
+                    text.alignment,
+                    text.line_height,
+                );
+                llimphi_text::draw_layout_runs(scene, &layout, (r.x as f64, r.y as f64));
+            } else {
+                // Parley resuelve la alineación horizontal vía max_width +
+                // alignment. Para Center también centramos verticalmente; para
+                // Start/End/Justify anclamos arriba (párrafo/editor).
+                let block = llimphi_text::TextBlock {
+                    text: &text.content,
+                    size_px: text.size_px,
+                    color: text.color,
+                    origin: (r.x as f64, r.y as f64),
+                    max_width: Some(r.w),
+                    alignment: text.alignment,
+                    line_height: text.line_height,
+                    italic: text.italic,
+                    font_family: text.font_family.clone(),
+                };
+                // Shaping una sola vez: el `Layout` retornado se reusa para
+                // medir (cuando hay centrado vertical) y para pintar.
+                let layout = llimphi_text::layout_block(typesetter, &block);
+                let origin =
+                    if matches!(text.alignment, llimphi_text::Alignment::Center) {
+                        let m = llimphi_text::measurement(&layout);
+                        (
+                            r.x as f64,
+                            r.y as f64 + ((r.h - m.height) as f64 * 0.5).max(0.0),
+                        )
+                    } else {
+                        block.origin
+                    };
+                llimphi_text::draw_layout_xf(
+                    scene,
+                    &layout,
+                    text.color,
+                    cur_xf * Affine::translate(origin),
+                );
+            }
+        }
+        if node.clip {
+            let clip_rect = KurboRect::new(
+                r.x as f64,
+                r.y as f64,
+                (r.x + r.w) as f64,
+                (r.y + r.h) as f64,
+            );
+            scene.push_layer(Mix::Clip, 1.0, cur_xf, &clip_rect);
+            layer_stack.push(node.subtree_end);
+        }
+    }
+    // Cerrá capas (clip + alpha) que llegaron al final sin pop intermedio.
+    while layer_stack.pop().is_some() {
+        scene.pop_layer();
+    }
+}
+
+/// Pasada GPU directo: recorre el `Mounted` en pre-orden DFS (mismo orden
+/// que [`paint`]) e invoca cada `gpu_painter` con el encoder y la
+/// `TextureView` del frame. Se ejecuta DESPUÉS de la pasada vello — la
+/// intermediate ya tiene fill/image/painter/text encima cuando los
+/// callbacks corren, así que su `LoadOp` debe ser `Load`. Devuelve si
+/// se invocó al menos un painter (para que el caller decida si vale la
+/// pena finalizar y submitir el encoder).
+/// `true` si algún nodo del árbol registró un `gpu_painter` (p. ej. el video
+/// de media vía `gpu_paint_with`). El eventloop lo usa para decidir si la
+/// capa de overlay necesita componerse aparte (sobre el contenido gpu) en vez
+/// de pintarse en la escena principal.
+pub fn has_gpu_painter<Msg>(mounted: &Mounted<Msg>) -> bool {
+    mounted.nodes.iter().any(|n| n.gpu_painter.is_some())
+}
+
+pub fn paint_gpu<Msg>(
+    mounted: &Mounted<Msg>,
+    computed: &ComputedLayout,
+    device: &wgpu::Device,
+    queue: &wgpu::Queue,
+    encoder: &mut wgpu::CommandEncoder,
+    view: &wgpu::TextureView,
+    viewport: (u32, u32),
+) -> bool {
+    let mut any = false;
+    for node in &mounted.nodes {
+        let Some(painter) = node.gpu_painter.as_ref() else {
+            continue;
+        };
+        let Some(r) = computed.get(node.id) else {
+            continue;
+        };
+        (painter)(
+            device,
+            queue,
+            encoder,
+            view,
+            PaintRect {
+                x: r.x,
+                y: r.y,
+                w: r.w,
+                h: r.h,
+            },
+            viewport,
+        );
+        any = true;
+    }
+    any
+}
+
+/// Hit-test parametrizado por elegibilidad. Devuelve el índice del nodo
+/// más al frente (último en pre-orden) cuyo rect contiene `(x, y)` y para
+/// el cual `pred` devuelve `true`, respetando `clip`: si el punto cae
+/// afuera de un nodo con clip, el subárbol entero es invisible.
+///
+/// **Respeta `transform`**: igual que [`paint`], compone el afín acumulado
+/// de los ancestros (cada `transform` alrededor del centro del rect del
+/// nodo, convención CSS `transform-origin: 50% 50%`). El punto de pantalla
+/// `(x, y)` se lleva al espacio local del nodo invirtiendo ese afín, y se
+/// testea contra el rect sin transformar. Así un nodo rotado/escalado/
+/// trasladado recibe los clicks donde realmente se ve pintado (recorrido
+/// tipo Prezi, lienzos de tullpu, `@keyframes` de puriy). Un subárbol con
+/// afín singular (escala 0) es inalcanzable, igual que es invisible.
+pub fn hit_test_pred<Msg, F>(
+    mounted: &Mounted<Msg>,
+    computed: &ComputedLayout,
+    x: f32,
+    y: f32,
+    pred: F,
+) -> Option<usize>
+where
+    F: Fn(&MountedNode<Msg>) -> bool,
+{
+    let mut hit: Option<usize> = None;
+    let mut clip_stack: Vec<usize> = Vec::new();
+    // Espejo del stack de transformaciones de `paint`: `cur_xf` es el
+    // producto acumulado de los `transform` de los ancestros activos
+    // (local → pantalla). Vacío ⇒ identidad ⇒ camino directo sin invertir
+    // (cero costo para la abrumadora mayoría de árboles sin transform).
+    let mut xf_stack: Vec<(usize, Affine)> = Vec::new();
+    let mut cur_xf = Affine::IDENTITY;
+    let mut idx = 0;
+    while idx < mounted.nodes.len() {
+        while let Some(&end) = clip_stack.last() {
+            if idx >= end {
+                clip_stack.pop();
+            } else {
+                break;
+            }
+        }
+        while let Some(&(end, prev)) = xf_stack.last() {
+            if idx >= end {
+                cur_xf = prev;
+                xf_stack.pop();
+            } else {
+                break;
+            }
+        }
+        let node = &mounted.nodes[idx];
+        let Some(r) = computed.get(node.id) else {
+            idx += 1;
+            continue;
+        };
+        // Componé el transform de este nodo igual que `paint`, ANTES de
+        // resolver el punto local (su propio rect ya cae en el espacio
+        // transformado).
+        if let Some(local) = node.transform {
+            let cx = (r.x + r.w * 0.5) as f64;
+            let cy = (r.y + r.h * 0.5) as f64;
+            let centered =
+                Affine::translate((cx, cy)) * local * Affine::translate((-cx, -cy));
+            xf_stack.push((node.subtree_end, cur_xf));
+            cur_xf *= centered;
+        }
+        // Punto en el espacio local del nodo. Sin transform activo, es el
+        // punto de pantalla tal cual. Con transform, se invierte el afín;
+        // si es singular (no invertible) el subárbol es inalcanzable.
+        let (lx, ly) = if xf_stack.is_empty() {
+            (x as f64, y as f64)
+        } else if cur_xf.determinant().abs() < 1e-9 {
+            idx = node.subtree_end;
+            continue;
+        } else {
+            let p = cur_xf.inverse() * Point::new(x as f64, y as f64);
+            (p.x, p.y)
+        };
+        let inside = lx >= r.x as f64
+            && lx < (r.x + r.w) as f64
+            && ly >= r.y as f64
+            && ly < (r.y + r.h) as f64;
+        if node.clip {
+            if !inside {
+                idx = node.subtree_end;
+                continue;
+            }
+            clip_stack.push(node.subtree_end);
+        }
+        if inside && pred(node) {
+            hit = Some(idx);
+        }
+        idx += 1;
+    }
+    hit
+}
+
+/// Hit-test específico para clicks (incluye nodos draggables).
+pub fn hit_test_click<Msg>(
+    mounted: &Mounted<Msg>,
+    computed: &ComputedLayout,
+    x: f32,
+    y: f32,
+) -> Option<usize> {
+    hit_test_pred(mounted, computed, x, y, |n| {
+        n.on_click.is_some()
+            || n.on_click_at.is_some()
+            || n.drag.is_some()
+            || n.drag_at.is_some()
+    })
+}
+
+/// Hit-test específico para right-click. Sólo considera nodos que
+/// declararon `on_right_click` o `on_right_click_at` — un right-click
+/// sobre un nodo sin handler no hace nada (no se "filtra" al click
+/// izquierdo).
+pub fn hit_test_right_click<Msg>(
+    mounted: &Mounted<Msg>,
+    computed: &ComputedLayout,
+    x: f32,
+    y: f32,
+) -> Option<usize> {
+    hit_test_pred(mounted, computed, x, y, |n| {
+        n.on_right_click.is_some() || n.on_right_click_at.is_some()
+    })
+}
+
+/// Hit-test específico para middle-click. Mismo modelo que right-click:
+/// sólo nodos que declararon `on_middle_click` reaccionan.
+pub fn hit_test_middle_click<Msg>(
+    mounted: &Mounted<Msg>,
+    computed: &ComputedLayout,
+    x: f32,
+    y: f32,
+) -> Option<usize> {
+    hit_test_pred(mounted, computed, x, y, |n| n.on_middle_click.is_some())
+}
+
+/// Hit-test específico para hover (nodos con `hover_fill`).
+pub fn hit_test_hover<Msg>(
+    mounted: &Mounted<Msg>,
+    computed: &ComputedLayout,
+    x: f32,
+    y: f32,
+) -> Option<usize> {
+    hit_test_pred(mounted, computed, x, y, |n| n.hover_fill.is_some())
+}
+
+/// Hit-test específico para drop targets (nodos con `on_drop`). Usado
+/// durante un drag activo para resaltar el destino y para invocar el
+/// handler al soltar.
+pub fn hit_test_drop<Msg>(
+    mounted: &Mounted<Msg>,
+    computed: &ComputedLayout,
+    x: f32,
+    y: f32,
+) -> Option<usize> {
+    hit_test_pred(mounted, computed, x, y, |n| n.on_drop.is_some())
+}
+
+/// Hit-test específico para áreas de scroll (nodos con `on_scroll`). El
+/// runtime lo usa al recibir la rueda: el nodo más al frente bajo el
+/// cursor con handler de scroll consume el evento antes del `on_wheel`
+/// global.
+pub fn hit_test_scroll<Msg>(
+    mounted: &Mounted<Msg>,
+    computed: &ComputedLayout,
+    x: f32,
+    y: f32,
+) -> Option<usize> {
+    hit_test_pred(mounted, computed, x, y, |n| n.on_scroll.is_some())
+}
+
+/// Hit-test para foco: el id `focusable` del nodo más al frente bajo el
+/// cursor (click-to-focus). `None` si no se clickeó nada enfocable.
+pub fn hit_test_focusable<Msg>(
+    mounted: &Mounted<Msg>,
+    computed: &ComputedLayout,
+    x: f32,
+    y: f32,
+) -> Option<u64> {
+    hit_test_pred(mounted, computed, x, y, |n| n.focusable.is_some())
+        .and_then(|i| mounted.nodes[i].focusable)
+}
+
+/// Ids enfocables en orden de Tab (pre-orden del árbol = orden de
+/// inserción de `Mounted::nodes`). Sólo nodos con rect computado
+/// (presentes en el layout). Es el orden DOM-like de tabulación.
+pub fn focus_order<Msg>(mounted: &Mounted<Msg>, computed: &ComputedLayout) -> Vec<u64> {
+    mounted
+        .nodes
+        .iter()
+        .filter_map(|n| {
+            n.focusable
+                .filter(|_| computed.get(n.id).is_some())
+        })
+        .collect()
+}
+
+/// Próximo id de foco al pulsar Tab (o Shift+Tab si `reverse`), dado el
+/// `order` (de [`focus_order`]) y el `current`. Envuelve en los extremos.
+/// Si no hay enfocables devuelve `None`; si `current` ya no existe en el
+/// orden, arranca por el primero (Tab) o el último (Shift+Tab).
+pub fn next_focus(order: &[u64], current: Option<u64>, reverse: bool) -> Option<u64> {
+    if order.is_empty() {
+        return None;
+    }
+    let n = order.len();
+    let pos = current.and_then(|c| order.iter().position(|&id| id == c));
+    let next_idx = match pos {
+        Some(i) => {
+            if reverse {
+                (i + n - 1) % n
+            } else {
+                (i + 1) % n
+            }
+        }
+        None => {
+            if reverse {
+                n - 1
+            } else {
+                0
+            }
+        }
+    };
+    Some(order[next_idx])
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::{hit_test_click, mount, View};
+    use llimphi_layout::taffy::prelude::*;
+    use llimphi_layout::{LayoutTree, Style};
+    use vello::kurbo::Affine;
+
+    /// Un hijo clickeable de 100×100 anclado arriba-izquierda. Devuelve
+    /// `(mounted, computed)` ya layouteados sobre un viewport 400×400.
+    fn fixture(
+        transform: Option<Affine>,
+    ) -> (crate::Mounted<()>, llimphi_layout::ComputedLayout) {
+        let mut child = View::<()>::new(Style {
+            size: Size {
+                width: length(100.0),
+                height: length(100.0),
+            },
+            ..Default::default()
+        })
+        .on_click(());
+        if let Some(xf) = transform {
+            child = child.transform(xf);
+        }
+        let root = View::<()>::new(Style {
+            align_items: Some(AlignItems::FlexStart),
+            justify_content: Some(JustifyContent::FlexStart),
+            ..Default::default()
+        })
+        .children(vec![child]);
+        let mut layout = LayoutTree::new();
+        let mounted = mount(&mut layout, root);
+        let computed = layout.compute(mounted.root, (400.0, 400.0)).expect("layout");
+        (mounted, computed)
+    }
+
+    #[test]
+    fn sin_transform_el_hit_cae_en_el_rect() {
+        let (m, c) = fixture(None);
+        assert_eq!(hit_test_click(&m, &c, 50.0, 50.0), Some(1)); // dentro
+        assert_eq!(hit_test_click(&m, &c, 250.0, 50.0), None); // fuera
+    }
+
+    #[test]
+    fn traslacion_mueve_el_area_clickeable() {
+        // El nodo se ve corrido +200px en x; el click debe seguirlo.
+        let (m, c) = fixture(Some(Affine::translate((200.0, 0.0))));
+        assert_eq!(hit_test_click(&m, &c, 250.0, 50.0), Some(1)); // donde se ve
+        assert_eq!(hit_test_click(&m, &c, 50.0, 50.0), None); // ya no donde estaba
+    }
+
+    #[test]
+    fn rotacion_180_grados_alrededor_del_centro() {
+        // Rotar 180° alrededor del centro (50,50) deja el rect en su sitio:
+        // una esquina mapea a la opuesta, pero el cuadrado cubre lo mismo.
+        let (m, c) = fixture(Some(Affine::rotate(std::f64::consts::PI)));
+        assert_eq!(hit_test_click(&m, &c, 10.0, 10.0), Some(1));
+        assert_eq!(hit_test_click(&m, &c, 90.0, 90.0), Some(1));
+        assert_eq!(hit_test_click(&m, &c, 150.0, 150.0), None);
+    }
+
+    #[test]
+    fn escala_cero_es_inalcanzable() {
+        let (m, c) = fixture(Some(Affine::scale(0.0)));
+        assert_eq!(hit_test_click(&m, &c, 50.0, 50.0), None);
+    }
+
+    #[test]
+    fn tab_traversal_envuelve_en_los_extremos() {
+        use crate::next_focus;
+        let order = [10u64, 20, 30];
+        // Avanza.
+        assert_eq!(next_focus(&order, Some(10), false), Some(20));
+        assert_eq!(next_focus(&order, Some(30), false), Some(10)); // wrap
+        // Retrocede (Shift+Tab).
+        assert_eq!(next_focus(&order, Some(20), true), Some(10));
+        assert_eq!(next_focus(&order, Some(10), true), Some(30)); // wrap
+        // Sin foco previo: Tab → primero, Shift+Tab → último.
+        assert_eq!(next_focus(&order, None, false), Some(10));
+        assert_eq!(next_focus(&order, None, true), Some(30));
+        // Foco obsoleto (id que ya no está) → arranca por el extremo.
+        assert_eq!(next_focus(&order, Some(99), false), Some(10));
+        // Lista vacía.
+        assert_eq!(next_focus(&[], Some(10), false), None);
+    }
+}
diff --git a/llimphi-compositor/src/view.rs b/llimphi-compositor/src/view.rs
new file mode 100644
index 0000000..32bd1e4
--- /dev/null
+++ b/llimphi-compositor/src/view.rs
@@ -0,0 +1,408 @@
+use super::*;
+
+impl<Msg> View<Msg> {
+    pub fn new(style: Style) -> Self {
+        Self {
+            style,
+            fill: None,
+            hover_fill: None,
+            radius: 0.0,
+            text: None,
+            image: None,
+            painter: None,
+            gpu_painter: None,
+            on_pointer_enter: None,
+            on_pointer_leave: None,
+            on_click: None,
+            on_click_at: None,
+            on_right_click: None,
+            on_right_click_at: None,
+            on_middle_click: None,
+            drag: None,
+            drag_at: None,
+            drag_payload: None,
+            on_drop: None,
+            drop_hover_fill: None,
+            clip: false,
+            on_scroll: None,
+            focusable: None,
+            alpha: None,
+            transform: None,
+            tooltip: None,
+            children: Vec::new(),
+        }
+    }
+
+    /// Asocia un texto de **tooltip** a este nodo. Llimphi sólo lo transporta
+    /// hasta el [`MountedNode`](crate::MountedNode); el consumidor decide cómo
+    /// mostrarlo (un overlay del runtime, una surface popup del cliente) tras
+    /// localizar el nodo bajo el cursor con el hit-test de hover.
+    pub fn tooltip(mut self, text: impl Into<String>) -> Self {
+        self.tooltip = Some(text.into());
+        self
+    }
+
+    /// Registra un handler de rueda local: si el cursor está sobre este
+    /// nodo cuando la rueda gira, el runtime lo invoca con el delta
+    /// `(dx, dy)` en líneas lógicas ANTES de caer al `App::on_wheel`
+    /// global. Devolver `Some(Msg)` consume el evento. Es la base de las
+    /// áreas de scroll autocontenidas (`llimphi-widget-scroll`).
+    pub fn on_scroll<F>(mut self, handler: F) -> Self
+    where
+        F: Fn(f32, f32) -> Option<Msg> + Send + Sync + 'static,
+    {
+        self.on_scroll = Some(Arc::new(handler));
+        self
+    }
+
+    /// Marca este nodo como enfocable con el id opaco `id`. El runtime lo
+    /// incluye en el orden de Tab (pre-orden del árbol) y le da foco al
+    /// clickearlo; cada cambio de foco se notifica vía `App::on_focus`.
+    /// El caller pinta el focus-ring comparando el id contra el foco que
+    /// guardó en su `Model`.
+    pub fn focusable(mut self, id: u64) -> Self {
+        self.focusable = Some(id);
+        self
+    }
+
+    /// Aplica una transformación afín 2D a este nodo y todo su subtree,
+    /// **alrededor del centro de su rect** (CSS `transform-origin: 50%
+    /// 50%`). El centro se resuelve en `paint` contra el layout computado;
+    /// el caller sólo provee el afín "local" (producto de sus
+    /// `rotate`/`scale`/`translate`). Nodos anidados componen en el
+    /// espacio ya transformado del padre. Pensado para `transform` y
+    /// `@keyframes` CSS de puriy. `Affine::IDENTITY` equivale a no setear.
+    pub fn transform(mut self, xf: Affine) -> Self {
+        self.transform = Some(xf);
+        self
+    }
+
+    pub fn fill(mut self, color: Color) -> Self {
+        self.fill = Some(color);
+        self
+    }
+
+    /// Opacidad uniforme aplicada a este nodo y todos sus descendientes
+    /// vía `scene.push_layer(Mix::Normal, a, …)`. Pensado para fade-in/out
+    /// de overlays, toasts y modales sin tener que tunear el alpha de
+    /// cada color del subtree. Valores fuera de `[0.0, 1.0]` se clampean.
+    /// Hace que el subtree se componga en una capa intermedia — usar sólo
+    /// cuando sea necesario (no es gratuito).
+    pub fn alpha(mut self, a: f32) -> Self {
+        self.alpha = Some(a.clamp(0.0, 1.0));
+        self
+    }
+
+    /// Color a usar cuando el cursor está sobre este nodo. Habilita
+    /// el hit-test de hover sobre el nodo.
+    pub fn hover_fill(mut self, color: Color) -> Self {
+        self.hover_fill = Some(color);
+        self
+    }
+
+    /// Marca este nodo como draggable. Mientras el usuario sostenga el
+    /// botón izquierdo sobre él, el runtime llama `handler(Move, dx, dy)`
+    /// por cada `CursorMoved` (dx/dy = delta desde el evento anterior) y
+    /// `handler(End, 0, 0)` al soltar. Sobreescribe `on_click` para este
+    /// nodo: un nodo es draggable **o** clickable.
+    pub fn draggable<F>(mut self, handler: F) -> Self
+    where
+        F: Fn(DragPhase, f32, f32) -> Option<Msg> + Send + Sync + 'static,
+    {
+        self.drag = Some(Arc::new(handler));
+        self
+    }
+
+    /// Como `draggable`, pero el handler también recibe la posición
+    /// inicial del press relativa al rect del nodo `(initial_lx,
+    /// initial_ly)`. Útil cuando el caller necesita resolver qué
+    /// entidad bajo el cursor inició el drag (Conceptos, lemmings,
+    /// nodos de un grafo, etc.). Gana sobre `draggable` si ambos están.
+    pub fn draggable_at<F>(mut self, handler: F) -> Self
+    where
+        F: Fn(DragPhase, f32, f32, f32, f32) -> Option<Msg> + Send + Sync + 'static,
+    {
+        self.drag_at = Some(Arc::new(handler));
+        self
+    }
+
+    /// Declara el payload `u64` que viaja con el drag de este nodo. Los
+    /// drop targets bajo cursor al soltar reciben este valor en su
+    /// `on_drop`. Sin payload, los drop targets no reaccionan (útil para
+    /// drags de "resize/scroll" que no representan transferencia).
+    pub fn drag_payload(mut self, payload: u64) -> Self {
+        self.drag_payload = Some(payload);
+        self
+    }
+
+    /// Marca este nodo como drop target. El runtime invoca `handler(payload)`
+    /// cuando un drag termina sobre el rect de este nodo y el origen del
+    /// drag declaró un payload. Si devuelve `Some(Msg)`, se dispatchea al
+    /// `update` antes del `DragPhase::End` del origen.
+    pub fn on_drop<F>(mut self, handler: F) -> Self
+    where
+        F: Fn(u64) -> Option<Msg> + Send + Sync + 'static,
+    {
+        self.on_drop = Some(Arc::new(handler));
+        self
+    }
+
+    /// Color de relleno cuando un drag activo está hovereando este drop
+    /// target. Análogo a `hover_fill` pero solo aplica mientras dura un
+    /// drag. Útil para resaltar el destino válido.
+    pub fn drop_hover_fill(mut self, color: Color) -> Self {
+        self.drop_hover_fill = Some(color);
+        self
+    }
+
+    pub fn radius(mut self, r: f64) -> Self {
+        self.radius = r;
+        self
+    }
+
+    pub fn text(mut self, content: impl Into<String>, size_px: f32, color: Color) -> Self {
+        self.text = Some(TextSpec {
+            content: content.into(),
+            size_px,
+            color,
+            alignment: llimphi_text::Alignment::Center,
+            italic: false,
+            font_family: None,
+            line_height: 1.2,
+            runs: None,
+        });
+        self
+    }
+
+    pub fn text_aligned(
+        mut self,
+        content: impl Into<String>,
+        size_px: f32,
+        color: Color,
+        alignment: llimphi_text::Alignment,
+    ) -> Self {
+        self.text = Some(TextSpec {
+            content: content.into(),
+            size_px,
+            color,
+            alignment,
+            italic: false,
+            font_family: None,
+            line_height: 1.2,
+            runs: None,
+        });
+        self
+    }
+
+    /// Como `text_aligned` pero con un flag `italic`. Si la fuente activa
+    /// no tiene variante italic, parley aplica synthesizing.
+    pub fn text_aligned_italic(
+        mut self,
+        content: impl Into<String>,
+        size_px: f32,
+        color: Color,
+        alignment: llimphi_text::Alignment,
+        italic: bool,
+    ) -> Self {
+        self.text = Some(TextSpec {
+            content: content.into(),
+            size_px,
+            color,
+            alignment,
+            italic,
+            font_family: None,
+            line_height: 1.2,
+            runs: None,
+        });
+        self
+    }
+
+    /// Como `text_aligned_italic` pero con font-family explícito.
+    /// La cadena se pasa como `parley::FontStack::Source` (acepta listas
+    /// CSS con fallbacks).
+    pub fn text_aligned_full(
+        mut self,
+        content: impl Into<String>,
+        size_px: f32,
+        color: Color,
+        alignment: llimphi_text::Alignment,
+        italic: bool,
+        font_family: Option<String>,
+    ) -> Self {
+        self.text = Some(TextSpec {
+            content: content.into(),
+            size_px,
+            color,
+            alignment,
+            italic,
+            font_family,
+            line_height: 1.2,
+            runs: None,
+        });
+        self
+    }
+
+    /// Texto **multicolor** en una sola pasada de shaping: `content` se pinta
+    /// con `default_color` y cada `(start_byte, end_byte, color)` de `runs`
+    /// sobreescribe su rango (offsets en bytes). Pensado para syntax
+    /// highlighting — un nodo por línea en vez de uno por token. Anclado
+    /// arriba-izquierda (sin centrado vertical); el caller dimensiona el rect.
+    pub fn text_runs(
+        mut self,
+        content: impl Into<String>,
+        size_px: f32,
+        default_color: Color,
+        runs: Vec<(usize, usize, Color)>,
+        alignment: llimphi_text::Alignment,
+    ) -> Self {
+        self.text = Some(TextSpec {
+            content: content.into(),
+            size_px,
+            color: default_color,
+            alignment,
+            italic: false,
+            font_family: None,
+            line_height: 1.2,
+            runs: Some(runs),
+        });
+        self
+    }
+
+    /// Sobreescribe el múltiplo de interlínea del texto ya seteado (default
+    /// 1.2). No-op si el nodo no tiene texto. Pensado para puriy, que pasa
+    /// el `line-height` computado de CSS para que medición y pintado usen
+    /// el mismo valor.
+    pub fn line_height(mut self, mult: f32) -> Self {
+        if let Some(t) = self.text.as_mut() {
+            t.line_height = mult;
+        }
+        self
+    }
+
+    pub fn on_click(mut self, msg: Msg) -> Self {
+        self.on_click = Some(msg);
+        self
+    }
+
+    /// Dispatch `msg` cuando el cursor entra al rect del nodo
+    /// (transición no-hover → hover). Sólo emite una vez por entrada —
+    /// el runtime no repite el msg si el cursor se mueve dentro del rect.
+    pub fn on_pointer_enter(mut self, msg: Msg) -> Self {
+        self.on_pointer_enter = Some(msg);
+        self
+    }
+
+    /// Dispatch `msg` cuando el cursor sale del rect del nodo.
+    pub fn on_pointer_leave(mut self, msg: Msg) -> Self {
+        self.on_pointer_leave = Some(msg);
+        self
+    }
+
+    /// Como `on_click`, pero el handler recibe `(local_x, local_y,
+    /// rect_w, rect_h)` — la posición del cursor relativa al rect del
+    /// nodo más las dimensiones actuales del nodo. Útil para canvas
+    /// elements que necesitan saber dónde fue el click para convertirlo
+    /// a coordenadas de mundo. Sobrescribe `on_click` para este nodo
+    /// si ambos están presentes.
+    pub fn on_click_at<F>(mut self, handler: F) -> Self
+    where
+        F: Fn(f32, f32, f32, f32) -> Option<Msg> + Send + Sync + 'static,
+    {
+        self.on_click_at = Some(Arc::new(handler));
+        self
+    }
+
+    /// Declara el `Msg` a emitir cuando el usuario hace click derecho
+    /// sobre este nodo. Para menús contextuales, conviene pasar un
+    /// `Msg::OpenMenu { ... }` y dejar que el modelo guarde la
+    /// posición; el overlay se abre vía [`App::view_overlay`].
+    pub fn on_right_click(mut self, msg: Msg) -> Self {
+        self.on_right_click = Some(msg);
+        self
+    }
+
+    /// Variante posicional de [`Self::on_right_click`]. El handler recibe
+    /// `(local_x, local_y, rect_w, rect_h)` para que un nodo "grilla"
+    /// pueda resolver internamente qué subcelda recibió el click. La
+    /// posición está relativa al rect del nodo.
+    pub fn on_right_click_at<F>(mut self, handler: F) -> Self
+    where
+        F: Fn(f32, f32, f32, f32) -> Option<Msg> + Send + Sync + 'static,
+    {
+        self.on_right_click_at = Some(Arc::new(handler));
+        self
+    }
+
+    /// Declara el `Msg` a emitir cuando el usuario hace click con el
+    /// botón del medio (rueda presionada). Usado típicamente para abrir
+    /// links en pestaña nueva — igual que Ctrl+Click pero más rápido.
+    pub fn on_middle_click(mut self, msg: Msg) -> Self {
+        self.on_middle_click = Some(msg);
+        self
+    }
+
+    /// Pinta `image` dentro del rect del nodo, centrada y escalada
+    /// preservando aspect ratio. Re-exporta `peniko::Image` vía
+    /// `llimphi_raster::peniko::Image` — el caller decodifica los
+    /// bytes con el crate `image` (u otro) y construye el `Image`
+    /// con `Blob<u8>` + `ImageFormat::Rgba8`.
+    pub fn image(mut self, image: Image) -> Self {
+        self.image = Some(image);
+        self
+    }
+
+    /// Registra una closure de pintura custom. El runtime la invoca
+    /// con `(&mut vello::Scene, &mut Typesetter, PaintRect)` durante
+    /// el paint del nodo. La closure es responsable de pintar
+    /// primitivas custom dentro del rect; no debe dejar `push_layer`
+    /// sin par. Soporte para canvas elements estilo
+    /// dominium/pluma/cosmos.
+    pub fn paint_with<F>(mut self, painter: F) -> Self
+    where
+        F: Fn(&mut vello::Scene, &mut llimphi_text::Typesetter, PaintRect)
+            + Send
+            + Sync
+            + 'static,
+    {
+        self.painter = Some(Arc::new(painter));
+        self
+    }
+
+    /// Registra una closure de pintura GPU directo. La closure recibe
+    /// `(&Device, &Queue, &mut CommandEncoder, &TextureView, PaintRect, (viewport_w, viewport_h))`
+    /// y debe escribir sobre el `TextureView` con `LoadOp::Load` (no
+    /// clear) para preservar la pasada vello previa. El último
+    /// argumento es el tamaño en pixels de la `TextureView` destino
+    /// (la intermedia del frame) — necesario para calcular NDC sin
+    /// asumir un viewport fijo. Ver [`GpuPaintFn`] para semántica
+    /// completa, contexto y orden de pintura.
+    pub fn gpu_paint_with<F>(mut self, painter: F) -> Self
+    where
+        F: Fn(
+                &wgpu::Device,
+                &wgpu::Queue,
+                &mut wgpu::CommandEncoder,
+                &wgpu::TextureView,
+                PaintRect,
+                (u32, u32),
+            ) + Send
+            + Sync
+            + 'static,
+    {
+        self.gpu_painter = Some(Arc::new(painter));
+        self
+    }
+
+    /// Recorta los hijos al rect de este nodo (paint y hit-test). Útil
+    /// para paneles con contenido virtualizado que no debe sangrar a
+    /// vecinos (listas, scrollers, viewers).
+    pub fn clip(mut self, enabled: bool) -> Self {
+        self.clip = enabled;
+        self
+    }
+
+    pub fn children(mut self, children: Vec<View<Msg>>) -> Self {
+        self.children = children;
+        self
+    }
+}
diff --git a/llimphi-compositor/tests/text_measure.rs b/llimphi-compositor/tests/text_measure.rs
new file mode 100644
index 0000000..32b9b82
--- /dev/null
+++ b/llimphi-compositor/tests/text_measure.rs
@@ -0,0 +1,87 @@
+//! Verifica que un párrafo largo, dentro de un bloque angosto, reserva el
+//! alto de **varias líneas** (no se aplasta en una). Es el regresor del bug
+//! "textos aplastados" de puriy: sin medición con parley, taffy le daba a la
+//! hoja de texto una sola línea de alto y las líneas envueltas se solapaban.
+
+use llimphi_compositor::{measure_text_node, mount, View};
+use llimphi_layout::taffy::prelude::*;
+use llimphi_layout::taffy::Size as TSize;
+use llimphi_layout::LayoutTree;
+
+#[derive(Clone)]
+enum Msg {}
+
+#[test]
+fn parrafo_largo_reserva_varias_lineas() {
+    // Bloque de 200px de ancho con un párrafo que claramente excede una línea.
+    let texto = "Lorem ipsum dolor sit amet consectetur adipiscing elit sed do \
+                 eiusmod tempor incididunt ut labore et dolore magna aliqua ut \
+                 enim ad minim veniam quis nostrud exercitation ullamco laboris.";
+    let block: View<Msg> = View::new(Style {
+        size: TSize { width: length(200.0_f32), height: auto() },
+        flex_direction: FlexDirection::Row,
+        flex_wrap: FlexWrap::Wrap,
+        ..Default::default()
+    })
+    .children(vec![View::new(Style {
+        size: TSize { width: auto(), height: auto() },
+        flex_shrink: 1.0,
+        ..Default::default()
+    })
+    .text_aligned(texto, 16.0_f32, vello::peniko::Color::BLACK, llimphi_text::Alignment::Start)]);
+
+    let mut layout = LayoutTree::new();
+    let mounted = mount(&mut layout, block);
+    let mut ts = llimphi_text::Typesetter::new();
+    let tmap = &mounted.text_measures;
+    assert_eq!(tmap.len(), 1, "debería haber exactamente una hoja de texto");
+
+    let computed = layout
+        .compute_with_measure(mounted.root, (800.0, 600.0), |nid, known, avail| match tmap.get(&nid)
+        {
+            Some(tm) => measure_text_node(&mut ts, tm, known, avail),
+            None => TSize::ZERO,
+        })
+        .expect("layout");
+
+    // El nodo de texto es el segundo en orden DFS (root, luego la hoja).
+    let leaf_id = mounted.nodes[1].id;
+    let rect = computed.get(leaf_id).expect("rect de la hoja");
+    // A 16px y ~1.2 de interlínea, una línea ≈ 19px. Con ~150px de texto en
+    // 200px de ancho deberían ser >= 4 líneas → bastante más de una.
+    assert!(
+        rect.h > 40.0,
+        "el párrafo se aplastó: alto={} (esperaba varias líneas)",
+        rect.h
+    );
+    assert!(rect.w <= 200.0 + 1.0, "no debería exceder el ancho del bloque");
+}
+
+#[test]
+fn line_height_mayor_reserva_mas_alto() {
+    let texto = "una línea de texto que envuelve en dos o tres renglones según \
+                 el ancho disponible para el bloque contenedor angosto";
+    let medir = |lh: f32| -> f32 {
+        let mut ts = llimphi_text::Typesetter::new();
+        let tm = llimphi_compositor::TextMeasure {
+            content: texto.to_string(),
+            size_px: 16.0,
+            alignment: llimphi_text::Alignment::Start,
+            italic: false,
+            font_family: None,
+            line_height: lh,
+        };
+        let known = TSize { width: Some(180.0_f32), height: None };
+        let avail = TSize {
+            width: AvailableSpace::Definite(180.0),
+            height: AvailableSpace::MaxContent,
+        };
+        measure_text_node(&mut ts, &tm, known, avail).height
+    };
+    let compacto = medir(1.0);
+    let comodo = medir(2.0);
+    assert!(
+        comodo > compacto * 1.5,
+        "line-height: 2 debería reservar bastante más alto que 1.0 (got {compacto} vs {comodo})"
+    );
+}
diff --git a/llimphi-gallery/Cargo.toml b/llimphi-gallery/Cargo.toml
new file mode 100644
index 0000000..bd0388a
--- /dev/null
+++ b/llimphi-gallery/Cargo.toml
@@ -0,0 +1,40 @@
+[package]
+name = "llimphi-gallery"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-gallery — demo único que prueba el kit transversal de elegancia. Binario standalone; `cargo run -p llimphi-gallery --release`."
+
+[[bin]]
+name = "llimphi-gallery"
+path = "src/main.rs"
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-motion = { workspace = true }
+llimphi-icons = { workspace = true }
+llimphi-widget-wawa-mark = { workspace = true }
+llimphi-widget-tooltip = { workspace = true }
+llimphi-widget-spinner = { workspace = true }
+llimphi-widget-progress = { workspace = true }
+llimphi-widget-toast = { workspace = true }
+llimphi-widget-modal = { workspace = true }
+llimphi-widget-empty = { workspace = true }
+llimphi-widget-status-bar = { workspace = true }
+llimphi-widget-shortcuts-help = { workspace = true }
+llimphi-widget-splash = { workspace = true }
+llimphi-widget-switch = { workspace = true }
+llimphi-widget-segmented = { workspace = true }
+llimphi-widget-breadcrumb = { workspace = true }
+llimphi-widget-badge = { workspace = true }
+llimphi-widget-avatar = { workspace = true }
+llimphi-widget-skeleton = { workspace = true }
+llimphi-widget-field = { workspace = true }
+llimphi-widget-panel = { workspace = true }
+llimphi-widget-card = { workspace = true }
+llimphi-widget-context-menu = { workspace = true }
+llimphi-widget-menubar = { workspace = true }
+app-bus = { workspace = true }
diff --git a/llimphi-gallery/src/main.rs b/llimphi-gallery/src/main.rs
new file mode 100644
index 0000000..807f45e
--- /dev/null
+++ b/llimphi-gallery/src/main.rs
@@ -0,0 +1,966 @@
+//! `llimphi-gallery` — demo único del kit transversal de elegancia.
+//!
+//! Una sola ventana que muestra cómo se ven los widgets del kit
+//! juntos sobre el theme dark. Útil para verificar paleta, escala,
+//! cinética y consistencia visual de un vistazo.
+//!
+//! `cargo run -p llimphi-gallery --release`
+//!
+//! Controles:
+//! - Click en switches/segments/breadcrumb: dispatchea Msg
+//! - Click en "Mostrar toast": apila un toast en bottom-right
+//! - Click en "Abrir modal": muestra el modal
+//! - `?`: abre/cierra el overlay de atajos
+//! - Esc: cierra overlay activo
+
+use std::sync::Arc;
+use std::time::{Duration, Instant};
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, percent, FlexDirection, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{App, Handle, Key, KeyEvent, KeyState, NamedKey, View};
+
+use llimphi_icons::{icon_view, Icon};
+use llimphi_theme::Theme;
+
+use app_bus::{AppMenu, Menu, MenuItem};
+use llimphi_widget_menubar::{menubar_overlay, menubar_view, MenuBarSpec, DEFAULT_HEIGHT as MENU_H};
+
+use llimphi_widget_avatar::avatar_view;
+use llimphi_widget_badge::{count_badge_view, dot_badge_view, BadgeKind};
+use llimphi_widget_breadcrumb::{breadcrumb_view, BreadcrumbPalette};
+use llimphi_widget_card::{card_view, CardOptions, CardPalette};
+use llimphi_widget_context_menu::{
+    context_menu_view, ContextMenuItem, ContextMenuPalette, ContextMenuSpec,
+};
+use llimphi_widget_empty::{empty_view, EmptyPalette};
+use llimphi_widget_field::{field_view, FieldPalette, FieldSpec};
+use llimphi_widget_modal::{modal_view, ModalButton, ModalPalette, ModalSpec};
+use llimphi_widget_panel::{panel_signature_painter, PanelStyle};
+use llimphi_widget_progress::{linear_progress_view, radial_progress_view};
+use llimphi_widget_segmented::{segmented_view, SegmentedPalette};
+use llimphi_widget_shortcuts_help::{
+    shortcuts_help_view, ShortcutEntry, ShortcutGroup, ShortcutsHelpPalette, ShortcutsHelpSpec,
+};
+use llimphi_widget_skeleton::{skeleton_box_view, skeleton_line_view, SkeletonPalette};
+use llimphi_widget_spinner::spinner_view;
+use llimphi_widget_splash::splash_view;
+use llimphi_widget_status_bar::{status_bar_view, StatusBarPalette, StatusSegment};
+use llimphi_widget_switch::{switch_view, SwitchPalette};
+use llimphi_widget_toast::{toast_stack_view, Toast};
+use llimphi_widget_tooltip::{tooltip_view, Side, TooltipPalette, TooltipSpec};
+use llimphi_widget_wawa_mark::{wawa_mark_view, WawaMarkPalette};
+
+#[derive(Clone)]
+enum Msg {
+    /// Tick para forzar repaint (animaciones por reloj absoluto).
+    Tick,
+    ToggleA,
+    ToggleB,
+    SelectSeg(usize),
+    #[allow(dead_code)]
+    BreadcrumbJump(usize),
+    PushToast,
+    DismissToast(u64),
+    OpenModal,
+    CloseModal,
+    ConfirmModal,
+    ToggleShortcuts,
+    OpenContextMenu,
+    CloseContextMenu,
+    ContextMenuPick(usize),
+    /// Abrir/cerrar un menú raíz de la barra principal (`None` = cerrar).
+    MenuOpen(Option<usize>),
+    /// Comando elegido en la barra principal (id `menu.<verbo>`).
+    MenuCommand(String),
+}
+
+struct Model {
+    started_at: Instant,
+    switch_a: bool,
+    switch_b: bool,
+    seg: usize,
+    toasts: Vec<Toast>,
+    next_toast_id: u64,
+    modal_open: bool,
+    shortcuts_open: bool,
+    viewport: (f32, f32),
+    /// Anchor del context-menu si está abierto. None = cerrado.
+    menu_open: Option<(f32, f32)>,
+    /// Item resaltado del menú (`usize::MAX` = ninguno, estado inicial).
+    menu_active: usize,
+    /// Última opción elegida del menú — se muestra como toast.
+    menu_last_pick: Option<String>,
+    /// Índice del menú raíz de la barra principal abierto. `None` = ninguno.
+    menubar_open: Option<usize>,
+}
+
+struct Gallery;
+
+impl App for Gallery {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · gallery"
+    }
+
+    fn initial_size() -> (u32, u32) {
+        (1280, 800)
+    }
+
+    fn init(handle: &Handle<Self::Msg>) -> Self::Model {
+        // Loop infinito de ticks para animar spinner/skeleton/splash.
+        // En una app real esto se gateaba según haya animaciones vivas.
+        handle.spawn_periodic(Duration::from_millis(50), || Msg::Tick);
+        Model {
+            started_at: Instant::now(),
+            switch_a: true,
+            switch_b: false,
+            seg: 1,
+            toasts: Vec::new(),
+            next_toast_id: 0,
+            modal_open: false,
+            shortcuts_open: false,
+            viewport: (1280.0, 800.0),
+            menu_open: None,
+            menu_active: usize::MAX,
+            menu_last_pick: None,
+            menubar_open: None,
+        }
+    }
+
+    fn update(model: Self::Model, msg: Self::Msg, _handle: &Handle<Self::Msg>) -> Self::Model {
+        let mut m = model;
+        // Filtrar toasts expirados oportunamente.
+        let now = Instant::now();
+        m.toasts.retain(|t| t.is_alive(now));
+        match msg {
+            Msg::Tick => {}
+            Msg::ToggleA => m.switch_a = !m.switch_a,
+            Msg::ToggleB => m.switch_b = !m.switch_b,
+            Msg::SelectSeg(i) => m.seg = i,
+            Msg::BreadcrumbJump(_) => {} // sólo demo
+            Msg::PushToast => {
+                let kinds = [
+                    (BadgeKind::Info, "guardado en disco"),
+                    (BadgeKind::Success, "publicado correctamente"),
+                    (BadgeKind::Warning, "espacio bajo en cache"),
+                    (BadgeKind::Error, "no se pudo conectar"),
+                ];
+                let (kind, text) = kinds[(m.next_toast_id as usize) % kinds.len()];
+                let id = m.next_toast_id;
+                m.next_toast_id += 1;
+                let toast = match kind {
+                    BadgeKind::Info => Toast::info(id, text, Duration::from_secs(4)),
+                    BadgeKind::Success => Toast::success(id, text, Duration::from_secs(4)),
+                    BadgeKind::Warning => Toast::warning(id, text, Duration::from_secs(4)),
+                    BadgeKind::Error => Toast::error(id, text, Duration::from_secs(4)),
+                    BadgeKind::Neutral => Toast::info(id, text, Duration::from_secs(4)),
+                };
+                m.toasts.push(toast);
+            }
+            Msg::DismissToast(id) => m.toasts.retain(|t| t.id != id),
+            Msg::OpenModal => m.modal_open = true,
+            Msg::CloseModal => m.modal_open = false,
+            Msg::ConfirmModal => m.modal_open = false,
+            Msg::ToggleShortcuts => m.shortcuts_open = !m.shortcuts_open,
+            Msg::OpenContextMenu => {
+                // Posición fija razonable — el botón está en la columna
+                // derecha; abrir el menú con anchor relativo al
+                // viewport mantiene la demo predecible aunque la
+                // ventana cambie de tamaño.
+                m.menu_open = Some((m.viewport.0 * 0.72, m.viewport.1 * 0.55));
+                m.menu_active = usize::MAX;
+                m.menubar_open = None;
+            }
+            Msg::CloseContextMenu => {
+                m.menu_open = None;
+                m.menu_active = usize::MAX;
+            }
+            Msg::ContextMenuPick(idx) => {
+                let labels = ["Copiar", "Cortar", "Pegar", "", "Eliminar"];
+                let label = labels.get(idx).copied().unwrap_or("?");
+                m.menu_last_pick = Some(label.to_string());
+                m.menu_open = None;
+                m.menu_active = usize::MAX;
+                // Confirmación visible.
+                let id = m.next_toast_id;
+                m.next_toast_id += 1;
+                m.toasts.push(Toast::info(
+                    id,
+                    format!("Menú → {label}"),
+                    Duration::from_secs(3),
+                ));
+            }
+            Msg::MenuOpen(idx) => {
+                m.menubar_open = idx;
+                // El dropdown de la barra y el contextual son mutuamente
+                // excluyentes.
+                m.menu_open = None;
+            }
+            Msg::MenuCommand(cmd) => {
+                m.menubar_open = None;
+                match cmd.as_str() {
+                    "app.quit" => std::process::exit(0),
+                    "view.toast" => return Self::update(m, Msg::PushToast, _handle),
+                    "view.modal" => m.modal_open = true,
+                    "view.context" => {
+                        m.menu_open = Some((m.viewport.0 * 0.5, m.viewport.1 * 0.45));
+                        m.menu_active = usize::MAX;
+                    }
+                    "help.shortcuts" => m.shortcuts_open = true,
+                    "help.about" => {
+                        let id = m.next_toast_id;
+                        m.next_toast_id += 1;
+                        m.toasts.push(Toast::info(
+                            id,
+                            "llimphi · gallery — vitrina del kit de elegancia",
+                            Duration::from_secs(4),
+                        ));
+                    }
+                    _ => {}
+                }
+            }
+        }
+        m
+    }
+
+    fn on_key(_model: &Self::Model, ev: &KeyEvent) -> Option<Self::Msg> {
+        if ev.state != KeyState::Pressed {
+            return None;
+        }
+        match &ev.key {
+            Key::Named(NamedKey::Escape) => Some(Msg::CloseModal),
+            Key::Character(s) if s == "?" => Some(Msg::ToggleShortcuts),
+            _ => None,
+        }
+    }
+
+    fn view(model: &Self::Model) -> View<Self::Msg> {
+        let theme = Theme::dark();
+
+        // Tres columnas equilibradas + status bar inferior.
+        let left = column_left(model, &theme);
+        let center = column_center(model, &theme);
+        let right = column_right(model, &theme);
+
+        let cols = View::new(Style {
+            flex_direction: FlexDirection::Row,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            flex_grow: 1.0,
+            gap: Size {
+                width: length(16.0_f32),
+                height: length(0.0_f32),
+            },
+            padding: Rect {
+                left: length(16.0_f32),
+                right: length(16.0_f32),
+                top: length(16.0_f32),
+                bottom: length(8.0_f32),
+            },
+            ..Default::default()
+        })
+        .children(vec![left, center, right]);
+
+        let status = status_bar_view(
+            vec![
+                StatusSegment::text("llimphi-gallery").with_icon(Icon::Home),
+                StatusSegment::text(if model.switch_a { "modo: pleno" } else { "modo: simple" })
+                    .emphasized(),
+            ],
+            vec![],
+            vec![
+                StatusSegment::text("Ln 1, Col 1"),
+                StatusSegment::text("UTF-8"),
+                StatusSegment::text("?  atajos")
+                    .clickable(Msg::ToggleShortcuts)
+                    .with_icon(Icon::Info),
+            ],
+            &StatusBarPalette::from_theme(&theme),
+        );
+
+        let menu = app_menu();
+        let bar = menubar_view(&menubar_spec(&menu, model, &theme));
+
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(theme.bg_app)
+        .children(vec![bar, cols, status])
+    }
+
+    fn view_overlay(model: &Self::Model) -> Option<View<Self::Msg>> {
+        let theme = Theme::dark();
+        // Prioridad: modal > shortcuts > toasts.
+        if model.modal_open {
+            return Some(modal_view(ModalSpec {
+                title: "Confirmar acción".to_string(),
+                body: modal_body_view(&theme),
+                buttons: vec![
+                    ModalButton::cancel("Cancelar", Msg::CloseModal),
+                    ModalButton::primary("Aplicar", Msg::ConfirmModal),
+                ],
+                size: (440.0, 220.0),
+                viewport: model.viewport,
+                on_dismiss: Msg::CloseModal,
+                palette: ModalPalette::from_theme(&theme),
+            }));
+        }
+        if model.shortcuts_open {
+            return Some(shortcuts_help_view(ShortcutsHelpSpec {
+                title: "Atajos de teclado".to_string(),
+                groups: vec![
+                    ShortcutGroup::new(
+                        "General",
+                        vec![
+                            ShortcutEntry::new("?", "Mostrar/ocultar esta ayuda"),
+                            ShortcutEntry::new("Esc", "Cerrar overlay activo"),
+                        ],
+                    ),
+                    ShortcutGroup::new(
+                        "Demo",
+                        vec![
+                            ShortcutEntry::new("Click", "Toasts, modal y switches"),
+                            ShortcutEntry::new("Hover", "Tooltips sobre los avatares"),
+                        ],
+                    ),
+                ],
+                viewport: model.viewport,
+                on_dismiss: Msg::ToggleShortcuts,
+                palette: ShortcutsHelpPalette::from_theme(&theme),
+            }));
+        }
+        if let Some(anchor) = model.menu_open {
+            return Some(context_menu_view(ContextMenuSpec {
+                anchor,
+                viewport: model.viewport,
+                header: Some("Lienzo".into()),
+                items: vec![
+                    ContextMenuItem::action("Copiar").with_shortcut("Ctrl+C"),
+                    ContextMenuItem::action("Cortar").with_shortcut("Ctrl+X"),
+                    ContextMenuItem::action("Pegar").with_shortcut("Ctrl+V").disabled(),
+                    ContextMenuItem::separator(),
+                    ContextMenuItem::action("Eliminar")
+                        .with_shortcut("Del")
+                        .destructive(),
+                ],
+                active: model.menu_active,
+                on_pick: Arc::new(Msg::ContextMenuPick),
+                on_dismiss: Msg::CloseContextMenu,
+                palette: ContextMenuPalette::from_theme(&theme),
+            }));
+        }
+        // Dropdown de la barra de menú principal.
+        let menu = app_menu();
+        if let Some(v) = menubar_overlay(&menubar_spec(&menu, model, &theme)) {
+            return Some(v);
+        }
+        if !model.toasts.is_empty() {
+            return Some(toast_stack_view(
+                &model.toasts,
+                model.viewport,
+                Msg::DismissToast,
+            ));
+        }
+        None
+    }
+}
+
+// ---------------------------------------------------------------------
+// Barra de menú principal
+// ---------------------------------------------------------------------
+
+/// Menú principal de la vitrina. Sólo comandos que mapean a `Msg` reales.
+fn app_menu() -> AppMenu {
+    AppMenu::new()
+        .menu(Menu::new("Archivo").item(MenuItem::new("Salir", "app.quit").shortcut("Ctrl+Q")))
+        .menu(
+            Menu::new("Ver")
+                .item(MenuItem::new("Mostrar toast", "view.toast"))
+                .item(MenuItem::new("Abrir modal", "view.modal"))
+                .item(MenuItem::new("Menú contextual", "view.context").separated()),
+        )
+        .menu(
+            Menu::new("Ayuda")
+                .item(MenuItem::new("Atajos", "help.shortcuts").shortcut("?"))
+                .item(MenuItem::new("Acerca de", "help.about")),
+        )
+}
+
+/// Arma el `MenuBarSpec` compartido entre `view` y `view_overlay`.
+fn menubar_spec<'a>(menu: &'a AppMenu, model: &Model, theme: &'a Theme) -> MenuBarSpec<'a, Msg> {
+    MenuBarSpec {
+        menu,
+        open: model.menubar_open,
+        theme,
+        viewport: model.viewport,
+        height: MENU_H,
+        on_open: Arc::new(Msg::MenuOpen),
+        on_command: Arc::new(|cmd: &str| Msg::MenuCommand(cmd.to_string())),
+    }
+}
+
+// ---------------------------------------------------------------------
+// Columnas
+// ---------------------------------------------------------------------
+
+fn column_left(model: &Model, theme: &Theme) -> View<Msg> {
+    let mut children: Vec<View<Msg>> = Vec::new();
+
+    children.push(section_title("Identidad"));
+    // Sello wawa en chico + grande.
+    children.push(
+        View::new(Style {
+            flex_direction: FlexDirection::Row,
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(128.0_f32),
+            },
+            gap: Size {
+                width: length(16.0_f32),
+                height: length(0.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            ..Default::default()
+        })
+        .children(vec![
+            wawa_frame(48.0),
+            wawa_frame(96.0),
+            wawa_frame(128.0),
+        ]),
+    );
+
+    children.push(section_title("Splash"));
+    children.push(
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(220.0_f32),
+            },
+            flex_shrink: 0.0,
+            ..Default::default()
+        })
+        .fill(theme.bg_panel)
+        .radius(llimphi_theme::radius::MD)
+        .children(vec![splash_view(model.started_at, theme.bg_panel, theme.fg_text)]),
+    );
+
+    children.push(section_title("Empty state"));
+    children.push(
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(200.0_f32),
+            },
+            flex_shrink: 0.0,
+            ..Default::default()
+        })
+        .fill(theme.bg_panel)
+        .radius(llimphi_theme::radius::MD)
+        .children(vec![empty_view(
+            Icon::Folder,
+            "Sin documentos abiertos",
+            Some("Abrí uno con Ctrl+O o creá un nuevo lienzo para empezar."),
+            &EmptyPalette::from_theme(theme),
+        )]),
+    );
+
+    panel_view(children, theme)
+}
+
+fn column_center(model: &Model, theme: &Theme) -> View<Msg> {
+    let mut children: Vec<View<Msg>> = Vec::new();
+
+    children.push(section_title("Navegación"));
+    children.push(
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: auto(),
+            },
+            ..Default::default()
+        })
+        .children(vec![breadcrumb_view(
+            &["home", "docs", "2026", "elegancia.md"],
+            Msg::BreadcrumbJump,
+            &BreadcrumbPalette::from_theme(theme),
+        )]),
+    );
+
+    children.push(section_title("Controles"));
+    children.push(switch_row("Modo pleno", model.switch_a, Msg::ToggleA, theme));
+    children.push(switch_row("Telemetría", model.switch_b, Msg::ToggleB, theme));
+    children.push(spacer_v(8.0));
+    children.push(
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(28.0_f32),
+            },
+            ..Default::default()
+        })
+        .children(vec![segmented_view(
+            &["lista", "grilla", "kanban"],
+            model.seg,
+            Msg::SelectSeg,
+            &SegmentedPalette::from_theme(theme),
+        )]),
+    );
+
+    children.push(section_title("Formulario"));
+    children.push(field_view(FieldSpec {
+        label: "Nombre del lienzo".to_string(),
+        control: fake_text_input("introducción a wawa", theme),
+        required: true,
+        helper: Some("Aparece como título en la pestaña.".to_string()),
+        error: None,
+        palette: FieldPalette::from_theme(theme),
+    }));
+    children.push(spacer_v(12.0));
+    children.push(field_view(FieldSpec {
+        label: "Slug".to_string(),
+        control: fake_text_input("intro-wawa-x@123", theme),
+        required: false,
+        helper: None,
+        error: Some("Sólo letras, números y guiones.".to_string()),
+        palette: FieldPalette::from_theme(theme),
+    }));
+
+    children.push(section_title("Acciones"));
+    children.push(button_row(theme));
+
+    panel_view(children, theme)
+}
+
+fn column_right(_model: &Model, theme: &Theme) -> View<Msg> {
+    let mut children: Vec<View<Msg>> = Vec::new();
+
+    children.push(section_title("Identidades"));
+    // Avatares en línea con badge encima.
+    children.push(
+        View::new(Style {
+            flex_direction: FlexDirection::Row,
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(48.0_f32),
+            },
+            gap: Size {
+                width: length(8.0_f32),
+                height: length(0.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            ..Default::default()
+        })
+        .children(vec![
+            avatar_view("sergio", 40.0),
+            avatar_view("calcetín", 40.0),
+            avatar_view("amaru", 40.0),
+            avatar_view("pacha", 40.0),
+            avatar_view("inti", 40.0),
+        ]),
+    );
+
+    children.push(section_title("Badges"));
+    children.push(
+        View::new(Style {
+            flex_direction: FlexDirection::Row,
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(24.0_f32),
+            },
+            gap: Size {
+                width: length(10.0_f32),
+                height: length(0.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            ..Default::default()
+        })
+        .children(vec![
+            count_badge_view(3, BadgeKind::Info),
+            count_badge_view(12, BadgeKind::Success),
+            count_badge_view(99, BadgeKind::Warning),
+            count_badge_view(120, BadgeKind::Error),
+            dot_badge_view(BadgeKind::Success),
+            dot_badge_view(BadgeKind::Warning),
+            dot_badge_view(BadgeKind::Error),
+        ]),
+    );
+
+    children.push(section_title("Carga"));
+    children.push(
+        View::new(Style {
+            flex_direction: FlexDirection::Row,
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(48.0_f32),
+            },
+            gap: Size {
+                width: length(16.0_f32),
+                height: length(0.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            ..Default::default()
+        })
+        .children(vec![
+            View::new(Style {
+                size: Size {
+                    width: length(40.0_f32),
+                    height: length(40.0_f32),
+                },
+                ..Default::default()
+            })
+            .children(vec![spinner_view(theme.accent, 0.12, 1.0)]),
+            View::new(Style {
+                size: Size {
+                    width: length(40.0_f32),
+                    height: length(40.0_f32),
+                },
+                ..Default::default()
+            })
+            .children(vec![radial_progress_view(
+                0.66,
+                theme.bg_button,
+                theme.accent,
+                0.14,
+            )]),
+            linear_progress_view(0.42, theme.bg_button, theme.accent, 8.0),
+        ]),
+    );
+
+    children.push(section_title("Skeleton"));
+    let palette = SkeletonPalette::from_theme(theme);
+    children.push(skeleton_line_view::<Msg>(200.0, &palette));
+    children.push(spacer_v(6.0));
+    children.push(skeleton_line_view::<Msg>(280.0, &palette));
+    children.push(spacer_v(6.0));
+    children.push(skeleton_line_view::<Msg>(160.0, &palette));
+    children.push(spacer_v(10.0));
+    children.push(skeleton_box_view::<Msg>(percent_to_px(0.9, 360.0), 60.0, &palette));
+
+    children.push(section_title("Cards"));
+    // Dos cards apilados: el primero con la firma (gradient sutil +
+    // hairline en el top), el segundo con `accent` lateral y fill plano.
+    // Para apreciar la firma hay que mirar de cerca: el ojo registra
+    // "tallado" sin saber por qué.
+    let card_palette = CardPalette::from_theme(theme);
+    children.push(card_view(
+        vec![
+            text_line("Documento — multilienzo", 13.0, theme.fg_text),
+            text_line("3 cuerpos · 412 átomos · BLAKE3 verificado", 11.0, theme.fg_muted),
+        ],
+        CardOptions::with_signature(theme),
+        &card_palette,
+    ));
+    children.push(spacer_v(8.0));
+    children.push(card_view(
+        vec![
+            text_line("Build pasó — wawa-kernel", 13.0, theme.fg_text),
+            text_line("x86_64-unknown-none · 1.42s · 0 warnings", 11.0, theme.fg_muted),
+        ],
+        CardOptions {
+            accent: Some(Color::from_rgba8(110, 200, 130, 255)),
+            ..Default::default()
+        },
+        &card_palette,
+    ));
+
+    children.push(section_title("Menú contextual"));
+    children.push(
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(32.0_f32),
+            },
+            flex_shrink: 0.0,
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(JustifyContent::Center),
+            padding: Rect {
+                left: length(12.0_f32),
+                right: length(12.0_f32),
+                top: length(0.0_f32),
+                bottom: length(0.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(theme.bg_button)
+        .hover_fill(theme.bg_button_hover)
+        .radius(llimphi_theme::radius::SM)
+        .text_aligned(
+            "Mostrar menú".to_string(),
+            12.0,
+            theme.fg_text,
+            Alignment::Center,
+        )
+        .on_click(Msg::OpenContextMenu),
+    );
+
+    children.push(section_title("Iconografía"));
+    children.push(icon_grid(theme));
+
+    panel_view(children, theme)
+}
+
+// ---------------------------------------------------------------------
+// Helpers de composición
+// ---------------------------------------------------------------------
+
+fn text_line(text: &str, size: f32, color: Color) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(size + 6.0),
+        },
+        ..Default::default()
+    })
+    .text_aligned(text.to_string(), size, color, Alignment::Start)
+}
+
+fn section_title(text: &str) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(20.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .text_aligned(
+        text.to_uppercase(),
+        10.0,
+        Color::from_rgba8(140, 160, 200, 255),
+        Alignment::Start,
+    )
+}
+
+fn panel_view(children: Vec<View<Msg>>, theme: &Theme) -> View<Msg> {
+    let style = PanelStyle::from_theme(theme);
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        flex_grow: 1.0,
+        padding: Rect {
+            left: length(16.0_f32),
+            right: length(16.0_f32),
+            top: length(14.0_f32),
+            bottom: length(14.0_f32),
+        },
+        gap: Size {
+            width: length(0.0_f32),
+            height: length(10.0_f32),
+        },
+        ..Default::default()
+    })
+    .paint_with(panel_signature_painter(style))
+    .radius(style.radius)
+    .clip(true)
+    .children(children)
+}
+
+fn switch_row(label: &str, value: bool, msg: Msg, theme: &Theme) -> View<Msg> {
+    let progress = if value { 1.0 } else { 0.0 };
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(28.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::SpaceBetween),
+        ..Default::default()
+    })
+    .children(vec![
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            flex_grow: 1.0,
+            align_items: Some(AlignItems::Center),
+            ..Default::default()
+        })
+        .text_aligned(label.to_string(), 12.0, theme.fg_text, Alignment::Start),
+        switch_view(progress, msg, &SwitchPalette::from_theme(theme)),
+    ])
+}
+
+fn fake_text_input(text: &str, theme: &Theme) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(28.0_f32),
+        },
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(theme.bg_input)
+    .radius(llimphi_theme::radius::SM)
+    .text_aligned(text.to_string(), 12.0, theme.fg_text, Alignment::Start)
+}
+
+fn button_row(theme: &Theme) -> View<Msg> {
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(32.0_f32),
+        },
+        gap: Size {
+            width: length(8.0_f32),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![
+        btn("Mostrar toast", theme.accent, theme.bg_app, Msg::PushToast),
+        btn("Abrir modal", theme.bg_button, theme.fg_text, Msg::OpenModal),
+        btn("Atajos (?)", theme.bg_button, theme.fg_text, Msg::ToggleShortcuts),
+    ])
+}
+
+fn btn(label: &str, bg: Color, fg: Color, msg: Msg) -> View<Msg> {
+    let w = label.chars().count() as f32 * 7.5 + 24.0;
+    View::new(Style {
+        size: Size {
+            width: length(w),
+            height: length(32.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(bg)
+    .radius(llimphi_theme::radius::SM)
+    .text_aligned(label.to_string(), 12.0, fg, Alignment::Center)
+    .on_click(msg)
+}
+
+fn icon_grid(theme: &Theme) -> View<Msg> {
+    let icons = [
+        Icon::File, Icon::Folder, Icon::Save, Icon::Open, Icon::Search,
+        Icon::Plus, Icon::Minus, Icon::X, Icon::Check, Icon::Edit,
+        Icon::Trash, Icon::Home, Icon::Settings, Icon::Bell, Icon::More,
+        Icon::Info, Icon::Warning, Icon::Error, Icon::ChevronUp,
+        Icon::ChevronDown, Icon::ChevronLeft, Icon::ChevronRight,
+        Icon::FolderOpen,
+    ];
+    let cells: Vec<View<Msg>> = icons
+        .iter()
+        .map(|i| {
+            View::new(Style {
+                size: Size {
+                    width: length(28.0_f32),
+                    height: length(28.0_f32),
+                },
+                flex_shrink: 0.0,
+                ..Default::default()
+            })
+            .fill(theme.bg_panel_alt)
+            .radius(llimphi_theme::radius::XS)
+            .children(vec![icon_view(*i, theme.fg_text, 1.6)])
+        })
+        .collect();
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: auto(),
+        },
+        gap: Size {
+            width: length(6.0_f32),
+            height: length(6.0_f32),
+        },
+        flex_wrap: llimphi_ui::llimphi_layout::taffy::FlexWrap::Wrap,
+        ..Default::default()
+    })
+    .children(cells)
+}
+
+fn modal_body_view(theme: &Theme) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        flex_grow: 1.0,
+        ..Default::default()
+    })
+    .text_aligned(
+        "Esta acción reescribirá la configuración local. \
+         Sólo dura mientras no salgas — al guardar quedará persistida en disco."
+            .to_string(),
+        12.0,
+        theme.fg_muted,
+        Alignment::Start,
+    )
+}
+
+fn wawa_frame(side: f32) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: length(side),
+            height: length(side),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(vec![wawa_mark_view(&WawaMarkPalette::default())])
+}
+
+fn spacer_v(h: f32) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(h),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+}
+
+fn percent_to_px(p: f32, base: f32) -> f32 {
+    p * base
+}
+
+// Tooltip placeholder — la demo no instrumenta hover-to-show porque
+// requeriría más Msgs; queda como código de referencia para apps reales.
+#[allow(dead_code)]
+fn demo_tooltip(viewport: (f32, f32), text: &str, theme: &Theme) -> View<Msg> {
+    tooltip_view::<Msg>(TooltipSpec {
+        anchor: (viewport.0 * 0.5, viewport.1 * 0.5),
+        viewport,
+        side: Side::Bottom,
+        text: text.to_string(),
+        palette: TooltipPalette::from_theme(theme),
+    })
+}
+
+fn main() {
+    llimphi_ui::run::<Gallery>();
+}
diff --git a/llimphi-gpu-bench/Cargo.toml b/llimphi-gpu-bench/Cargo.toml
new file mode 100644
index 0000000..e189878
--- /dev/null
+++ b/llimphi-gpu-bench/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name = "llimphi-gpu-bench"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "Binario standalone que valida el SDD §'GPU directo wgpu' en una máquina con GPU real: imprime info del adapter, corre vello vs GPU directo a varios N, evalúa el criterio (≥5× a 500K, ≥60 fps @ 1M) y exporta PNGs de verificación."
+
+[dependencies]
+llimphi-hal = { path = "../llimphi-hal" }
+llimphi-raster = { path = "../llimphi-raster" }
+vello = { workspace = true }
+pollster = { workspace = true }
+png = { workspace = true }
diff --git a/llimphi-gpu-bench/src/main.rs b/llimphi-gpu-bench/src/main.rs
new file mode 100644
index 0000000..d00247e
--- /dev/null
+++ b/llimphi-gpu-bench/src/main.rs
@@ -0,0 +1,941 @@
+//! `llimphi-gpu-bench` — binario standalone para validar el SDD
+//! `02_ruway/llimphi/SDD.md` §"GPU directo wgpu" en una máquina con GPU
+//! real.
+//!
+//! Hace cuatro cosas en orden y lo imprime todo a stdout en formato
+//! markdown / tabla copy-paste friendly:
+//!
+//! 1. **Header del sistema** — versión, hora, OS, GPU detectado.
+//! 2. **Info del adapter wgpu** — backend (Vulkan/Metal/DX12/GL),
+//!    device name, vendor, limits relevantes.
+//! 3. **Spike vello vs GPU directo** — para N ∈ {25K, 50K, 100K, 200K,
+//!    500K, 1M}. Mide ms/frame de cada uno y el factor. Evalúa el
+//!    criterio del SDD: ≥5× a 500K → PASA; < → ABORTAR.
+//! 4. **Escalado GPU directo solo** — para N ∈ {100K, 500K, 1M, 2M,
+//!    5M, 10M}. Mide ms/frame, fps equivalente, Mprim/s. Evalúa el
+//!    objetivo de 60 fps @ 1M.
+//! 5. **PNGs de verificación visual** — exporta 2 archivos al cwd:
+//!    `bench_vello_100k.png` y `bench_directo_100k.png`. La forma del
+//!    cielo de puntos debe coincidir entre los dos (LCG determinista).
+//!
+//! Pegar el output completo en chat para la verificación.
+//!
+//! Corre con: `cargo run -p llimphi-gpu-bench --release`.
+
+use std::fs::File;
+use std::io::{BufWriter, Write};
+use std::time::Instant;
+
+use llimphi_hal::{wgpu, Hal};
+use llimphi_raster::kurbo::{Affine, Rect};
+use llimphi_raster::peniko::{color::palette, Color, Fill};
+use llimphi_raster::{vello, GpuBatch, GpuPipelines};
+
+const W: u32 = 1024;
+const H: u32 = 1024;
+const FMT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba8Unorm;
+const WARMUP: usize = 5;
+const MEASURED: usize = 15;
+
+const SPIKE_SIZES: &[u32] = &[25_000, 50_000, 100_000, 200_000, 500_000, 1_000_000];
+const SCALE_SIZES: &[u32] = &[100_000, 500_000, 1_000_000, 2_000_000, 5_000_000, 10_000_000];
+
+/// Overrides via env vars (para correr en hosts limitados sin tumbar el
+/// binario). En GPU real ignorarlos y dejar los defaults.
+///
+/// - `LLIMPHI_BENCH_SPIKE_MAX=N` — recorta SPIKE_SIZES a los ≤ N.
+/// - `LLIMPHI_BENCH_SCALE_MAX=N` — idem SCALE_SIZES.
+/// - `LLIMPHI_BENCH_SKIP_VELLO=1` — saltea totalmente la columna vello
+///   (útil si vello revienta con SIGSEGV en este host).
+fn spike_sizes() -> Vec<u32> {
+    let max = std::env::var("LLIMPHI_BENCH_SPIKE_MAX")
+        .ok()
+        .and_then(|v| v.parse::<u32>().ok())
+        .unwrap_or(u32::MAX);
+    SPIKE_SIZES.iter().copied().filter(|&n| n <= max).collect()
+}
+
+fn scale_sizes() -> Vec<u32> {
+    let max = std::env::var("LLIMPHI_BENCH_SCALE_MAX")
+        .ok()
+        .and_then(|v| v.parse::<u32>().ok())
+        .unwrap_or(u32::MAX);
+    SCALE_SIZES.iter().copied().filter(|&n| n <= max).collect()
+}
+
+fn skip_vello() -> bool {
+    std::env::var("LLIMPHI_BENCH_SKIP_VELLO").ok().as_deref() == Some("1")
+}
+
+fn main() {
+    print_header();
+    let hal = pollster::block_on(Hal::new(None)).expect("hal");
+    print_adapter(&hal);
+
+    let (target, view) = make_target(&hal.device);
+
+    let pipelines = GpuPipelines::new(&hal.device, FMT);
+    let mut vello_renderer = vello::Renderer::new(
+        &hal.device,
+        vello::RendererOptions {
+            use_cpu: false,
+            antialiasing_support: vello::AaSupport {
+                area: true,
+                msaa8: false,
+                msaa16: false,
+            },
+            num_init_threads: None,
+            pipeline_cache: None,
+        },
+    )
+    .expect("vello renderer");
+
+    println!("## Spike vello vs GPU directo");
+    println!();
+    println!("Target: {W}×{H} Rgba8Unorm, headless. Cada N corre {WARMUP} warmup + {MEASURED} medidos, reporta mediana.");
+    println!();
+    println!("| N | vello ms | directo ms | factor | nota |");
+    println!("|---:|---:|---:|---:|---|");
+    let mut spike_rows: Vec<SpikeRow> = Vec::new();
+    let skip_v = skip_vello();
+    for n in spike_sizes() {
+        let row = bench_spike(&hal, &mut vello_renderer, &pipelines, &view, n, skip_v);
+        let note = if row.vello_crashed {
+            "vello SIGSEGV/error"
+        } else if let Some(f) = row.factor {
+            if f >= 5.0 { "≥5×" } else { "<5×" }
+        } else {
+            "-"
+        };
+        let vello_str = if row.vello_crashed {
+            "—".to_string()
+        } else {
+            format!("{:.2}", row.vello_ms.unwrap_or(0.0))
+        };
+        let factor_str = match row.factor {
+            Some(f) => format!("{:.2}×", f),
+            None => "—".to_string(),
+        };
+        println!(
+            "| {} | {} | {:.2} | {} | {} |",
+            fmt_int(n),
+            vello_str,
+            row.directo_ms,
+            factor_str,
+            note
+        );
+        let _ = std::io::stdout().flush();
+        spike_rows.push(row);
+    }
+    println!();
+    print_spike_verdict(&spike_rows);
+
+    println!("## Escalado GPU directo");
+    println!();
+    println!("API real (`GpuPipelines` + `GpuBatch::add_rect`). Sólo se mide el lado GPU directo — vello no llega acá.");
+    println!();
+    println!("| N | ms / frame | fps (1000/ms) | Mprim/s |");
+    println!("|---:|---:|---:|---:|");
+    let mut scale_rows: Vec<ScaleRow> = Vec::new();
+    for n in scale_sizes() {
+        let ms = bench_directo(&hal, &pipelines, &view, n);
+        let fps = 1000.0 / ms;
+        let mps = (n as f64 / 1_000_000.0) / (ms / 1000.0);
+        println!(
+            "| {} | {:.2} | {:.1} | {:.2} |",
+            fmt_int(n),
+            ms,
+            fps,
+            mps
+        );
+        let _ = std::io::stdout().flush();
+        scale_rows.push(ScaleRow { n, ms, fps, mps });
+    }
+    println!();
+    print_scale_verdict(&scale_rows);
+
+    // ----------------------------------------------------------------
+    // Variantes persistentes: el rebuild del batch/scene por frame es
+    // el peor caso. En apps reales (cosmos starfield Gaia, tinkuy
+    // particles iniciales, nakui viewport estático) los datos no
+    // cambian por frame — se uploadean UNA vez y el bucle solo redraw.
+    // Estos benches lo miden.
+    // ----------------------------------------------------------------
+    println!("## Persistente — datos fijos, sólo redraw por frame");
+    println!();
+    println!("Setup (LCG + write_buffer / Scene fill) fuera de la medición; el bucle medido sólo emite render_pass + draw + submit + wait.");
+    println!();
+    println!("### vello (Scene reutilizada sin reset)");
+    println!();
+    println!("| N | ms / frame | fps (1000/ms) |");
+    println!("|---:|---:|---:|");
+    let mut vello_persist_rows: Vec<(u32, f64)> = Vec::new();
+    let skip_v = skip_vello();
+    for n in scale_sizes() {
+        if skip_v {
+            println!("| {} | skipped | — |", fmt_int(n));
+            continue;
+        }
+        let attempt = std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
+            bench_vello_persistent(&hal, &mut vello_renderer, &view, n)
+        }));
+        match attempt {
+            Ok(ms) => {
+                let fps = 1000.0 / ms;
+                println!("| {} | {:.2} | {:.1} |", fmt_int(n), ms, fps);
+                let _ = std::io::stdout().flush();
+                vello_persist_rows.push((n, ms));
+            }
+            Err(_) => {
+                println!("| {} | crash | — |", fmt_int(n));
+            }
+        }
+    }
+    println!();
+    println!("### GPU directo (buffer + bind group persistentes)");
+    println!();
+    println!("| N | ms / frame | fps (1000/ms) | Mprim/s |");
+    println!("|---:|---:|---:|---:|");
+    let mut directo_persist_rows: Vec<ScaleRow> = Vec::new();
+    for n in scale_sizes() {
+        let ms = bench_directo_persistent(&hal, &pipelines, &view, n);
+        let fps = 1000.0 / ms;
+        let mps = (n as f64 / 1_000_000.0) / (ms / 1000.0);
+        println!("| {} | {:.2} | {:.1} | {:.2} |", fmt_int(n), ms, fps, mps);
+        let _ = std::io::stdout().flush();
+        directo_persist_rows.push(ScaleRow { n, ms, fps, mps });
+    }
+    println!();
+    print_persistent_verdict(&directo_persist_rows, &vello_persist_rows);
+
+    println!("## Validación visual");
+    println!();
+    let png_vello = "bench_vello_100k.png";
+    let png_directo = "bench_directo_100k.png";
+    if let Err(e) = export_vello_png(&hal, &mut vello_renderer, &target, &view, 100_000, png_vello)
+    {
+        println!("vello PNG fallo: {e}");
+    } else {
+        println!("- vello 100K   → `{}` ({W}×{H})", png_vello);
+    }
+    if let Err(e) =
+        export_directo_png(&hal, &pipelines, &target, &view, 100_000, png_directo)
+    {
+        println!("directo PNG fallo: {e}");
+    } else {
+        println!("- directo 100K → `{}` ({W}×{H})", png_directo);
+    }
+    println!();
+    println!("Las dos imágenes deben mostrar la misma constelación de puntos (LCG determinista).");
+    println!("Mirar en visor: si vello tiene halo AA suave y directo tiene pixeles hard-edged, todo bien.");
+    println!();
+
+    println!("## Resumen");
+    println!();
+    print_summary(
+        &spike_rows,
+        &scale_rows,
+        &directo_persist_rows,
+        &vello_persist_rows,
+    );
+}
+
+// ============================================================
+// IO / header
+// ============================================================
+
+fn print_header() {
+    println!("# llimphi-gpu-bench");
+    println!();
+    println!("Validación de Fase 0 del SDD `02_ruway/llimphi/SDD.md` §\"GPU directo wgpu\".");
+    println!("Criterio: factor ≥ 5× a 500K Y ≥ 60 fps @ 1M en GPU mid (Radeon 5500M, Iris Xe).");
+    println!();
+    println!("- crate version: {}", env!("CARGO_PKG_VERSION"));
+    println!("- host OS: {}", std::env::consts::OS);
+    println!("- host arch: {}", std::env::consts::ARCH);
+    println!();
+}
+
+fn print_adapter(hal: &Hal) {
+    let info = hal.adapter.get_info();
+    let limits = hal.adapter.limits();
+    println!("## Adapter wgpu");
+    println!();
+    println!("- backend: `{:?}`", info.backend);
+    println!("- device name: `{}`", info.name);
+    println!("- vendor: `0x{:04x}`", info.vendor);
+    println!("- device id: `0x{:04x}`", info.device);
+    println!("- device type: `{:?}`", info.device_type);
+    println!("- driver: `{}`", info.driver);
+    println!("- driver info: `{}`", info.driver_info);
+    println!();
+    println!("Limits relevantes:");
+    println!();
+    println!("- max texture 2D: {}", limits.max_texture_dimension_2d);
+    println!("- max buffer size: {} MB", limits.max_buffer_size / (1024 * 1024));
+    println!("- max storage buffer binding: {} MB", limits.max_storage_buffer_binding_size / (1024 * 1024));
+    println!();
+    let is_software = matches!(
+        info.device_type,
+        wgpu::DeviceType::Cpu
+    ) || info.driver.to_lowercase().contains("llvmpipe")
+        || info.driver.to_lowercase().contains("software")
+        || info.name.to_lowercase().contains("llvmpipe")
+        || info.name.to_lowercase().contains("swiftshader");
+    if is_software {
+        println!("⚠️  Adapter parece software (`{}`). Los números no reflejan GPU real.", info.name);
+        println!();
+    }
+}
+
+fn fmt_int(n: u32) -> String {
+    let s = n.to_string();
+    let mut out = String::new();
+    for (i, c) in s.chars().rev().enumerate() {
+        if i > 0 && i % 3 == 0 {
+            out.push('_');
+        }
+        out.push(c);
+    }
+    out.chars().rev().collect()
+}
+
+// ============================================================
+// Benches
+// ============================================================
+
+struct SpikeRow {
+    n: u32,
+    vello_ms: Option<f64>,
+    vello_crashed: bool,
+    directo_ms: f64,
+    factor: Option<f64>,
+}
+
+struct ScaleRow {
+    n: u32,
+    ms: f64,
+    fps: f64,
+    mps: f64,
+}
+
+fn bench_spike(
+    hal: &Hal,
+    vello_renderer: &mut vello::Renderer,
+    pipelines: &GpuPipelines,
+    view: &wgpu::TextureView,
+    n: u32,
+    skip_vello: bool,
+) -> SpikeRow {
+    let directo_ms = bench_directo(hal, pipelines, view, n);
+    if skip_vello {
+        return SpikeRow {
+            n,
+            vello_ms: None,
+            vello_crashed: true, // tratamos "skipped" como "no llegó"
+            directo_ms,
+            factor: None,
+        };
+    }
+    // catch_unwind sólo atrapa panics, no SIGSEGV. En vello pre-200K
+    // este path debería ser suficiente; si el binario muere igual,
+    // re-correr con `LLIMPHI_BENCH_SKIP_VELLO=1`.
+    let vello_attempt = std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
+        bench_vello(hal, vello_renderer, view, n)
+    }));
+    match vello_attempt {
+        Ok(ms) => {
+            let factor = ms / directo_ms;
+            SpikeRow {
+                n,
+                vello_ms: Some(ms),
+                vello_crashed: false,
+                directo_ms,
+                factor: Some(factor),
+            }
+        }
+        Err(_) => SpikeRow {
+            n,
+            vello_ms: None,
+            vello_crashed: true,
+            directo_ms,
+            factor: None,
+        },
+    }
+}
+
+fn bench_vello(
+    hal: &Hal,
+    renderer: &mut vello::Renderer,
+    view: &wgpu::TextureView,
+    n: u32,
+) -> f64 {
+    let mut scene = vello::Scene::new();
+    let mut samples: Vec<f64> = Vec::with_capacity(MEASURED);
+    for frame in 0..(WARMUP + MEASURED) {
+        let t0 = Instant::now();
+        scene.reset();
+        let mut state: u32 = 0x1234_5678;
+        for _ in 0..n {
+            let (x, y, rgba) = lcg_point(&mut state);
+            let r = (rgba & 0xFF) as u8;
+            let g = ((rgba >> 8) & 0xFF) as u8;
+            let b = ((rgba >> 16) & 0xFF) as u8;
+            let a = ((rgba >> 24) & 0xFF) as u8;
+            let xf = x as f64;
+            let yf = y as f64;
+            scene.fill(
+                Fill::NonZero,
+                Affine::IDENTITY,
+                Color::from_rgba8(r, g, b, a),
+                None,
+                &Rect::new(xf, yf, xf + POINT_PX as f64, yf + POINT_PX as f64),
+            );
+        }
+        renderer
+            .render_to_texture(
+                &hal.device,
+                &hal.queue,
+                &scene,
+                view,
+                &vello::RenderParams {
+                    base_color: palette::css::BLACK,
+                    width: W,
+                    height: H,
+                    antialiasing_method: vello::AaConfig::Area,
+                },
+            )
+            .expect("vello render");
+        hal.device.poll(wgpu::Maintain::Wait);
+        let dt = t0.elapsed().as_secs_f64() * 1000.0;
+        if frame >= WARMUP {
+            samples.push(dt);
+        }
+    }
+    median(&mut samples)
+}
+
+fn bench_directo(
+    hal: &Hal,
+    pipelines: &GpuPipelines,
+    view: &wgpu::TextureView,
+    n: u32,
+) -> f64 {
+    let mut samples: Vec<f64> = Vec::with_capacity(MEASURED);
+    for frame in 0..(WARMUP + MEASURED) {
+        let t0 = Instant::now();
+        let mut batch = GpuBatch::new(pipelines);
+        let mut state: u32 = 0x1234_5678;
+        for _ in 0..n {
+            let (x, y, rgba) = lcg_point(&mut state);
+            let r = (rgba & 0xFF) as u8;
+            let g = ((rgba >> 8) & 0xFF) as u8;
+            let b = ((rgba >> 16) & 0xFF) as u8;
+            let a = ((rgba >> 24) & 0xFF) as u8;
+            batch.add_rect(x, y, POINT_PX, POINT_PX, Color::from_rgba8(r, g, b, a));
+        }
+        let mut encoder = hal.device.create_command_encoder(
+            &wgpu::CommandEncoderDescriptor {
+                label: Some("bench-directo-enc"),
+            },
+        );
+        batch.flush(
+            &hal.device,
+            &hal.queue,
+            &mut encoder,
+            view,
+            (W as f32, H as f32),
+            wgpu::LoadOp::Clear(wgpu::Color::BLACK),
+        );
+        hal.queue.submit(std::iter::once(encoder.finish()));
+        hal.device.poll(wgpu::Maintain::Wait);
+        let dt = t0.elapsed().as_secs_f64() * 1000.0;
+        if frame >= WARMUP {
+            samples.push(dt);
+        }
+    }
+    median(&mut samples)
+}
+
+/// Vello persistente: la Scene se construye UNA vez (fill N rects) y
+/// el bucle medido sólo invoca `render_to_texture`. Sin `scene.reset()`.
+fn bench_vello_persistent(
+    hal: &Hal,
+    renderer: &mut vello::Renderer,
+    view: &wgpu::TextureView,
+    n: u32,
+) -> f64 {
+    let mut scene = vello::Scene::new();
+    scene.reset();
+    let mut state: u32 = 0x1234_5678;
+    for _ in 0..n {
+        let (x, y, rgba) = lcg_point(&mut state);
+        let r = (rgba & 0xFF) as u8;
+        let g = ((rgba >> 8) & 0xFF) as u8;
+        let b = ((rgba >> 16) & 0xFF) as u8;
+        let a = ((rgba >> 24) & 0xFF) as u8;
+        let xf = x as f64;
+        let yf = y as f64;
+        scene.fill(
+            Fill::NonZero,
+            Affine::IDENTITY,
+            Color::from_rgba8(r, g, b, a),
+            None,
+            &Rect::new(xf, yf, xf + POINT_PX as f64, yf + POINT_PX as f64),
+        );
+    }
+    let mut samples: Vec<f64> = Vec::with_capacity(MEASURED);
+    for frame in 0..(WARMUP + MEASURED) {
+        let t0 = Instant::now();
+        renderer
+            .render_to_texture(
+                &hal.device,
+                &hal.queue,
+                &scene,
+                view,
+                &vello::RenderParams {
+                    base_color: palette::css::BLACK,
+                    width: W,
+                    height: H,
+                    antialiasing_method: vello::AaConfig::Area,
+                },
+            )
+            .expect("vello render");
+        hal.device.poll(wgpu::Maintain::Wait);
+        let dt = t0.elapsed().as_secs_f64() * 1000.0;
+        if frame >= WARMUP {
+            samples.push(dt);
+        }
+    }
+    median(&mut samples)
+}
+
+/// GPU directo persistente: instance buffer + uniform buffer + bind
+/// group se construyen UNA vez. Bucle medido sólo abre render_pass,
+/// hace `draw(0..6, 0..n)` y submit.
+///
+/// Replica el layout que pinta `GpuBatch::add_rect` por debajo
+/// (instance stride 20 B = [x:f32, y:f32, w:f32, h:f32, rgba:u32]),
+/// usando el `rects` pipeline + `bind_layout` expuestos por
+/// `GpuPipelines`.
+fn bench_directo_persistent(
+    hal: &Hal,
+    pipelines: &GpuPipelines,
+    view: &wgpu::TextureView,
+    n: u32,
+) -> f64 {
+    // Empaquetar instancias UNA vez.
+    let mut bytes = Vec::with_capacity(n as usize * 20);
+    let mut state: u32 = 0x1234_5678;
+    for _ in 0..n {
+        let (x, y, rgba) = lcg_point(&mut state);
+        bytes.extend_from_slice(&x.to_ne_bytes());
+        bytes.extend_from_slice(&y.to_ne_bytes());
+        bytes.extend_from_slice(&POINT_PX.to_ne_bytes());
+        bytes.extend_from_slice(&POINT_PX.to_ne_bytes());
+        bytes.extend_from_slice(&rgba.to_ne_bytes());
+    }
+    let inst_buf = hal.device.create_buffer(&wgpu::BufferDescriptor {
+        label: Some("persist-rects"),
+        size: bytes.len() as u64,
+        usage: wgpu::BufferUsages::VERTEX | wgpu::BufferUsages::COPY_DST,
+        mapped_at_creation: false,
+    });
+    hal.queue.write_buffer(&inst_buf, 0, &bytes);
+
+    // Uniforms (viewport + line_width).
+    let u_data: [f32; 4] = [W as f32, H as f32, 1.0, 0.0];
+    let mut u_bytes = Vec::with_capacity(16);
+    for v in u_data {
+        u_bytes.extend_from_slice(&v.to_ne_bytes());
+    }
+    let uniforms = hal.device.create_buffer(&wgpu::BufferDescriptor {
+        label: Some("persist-uniforms"),
+        size: 16,
+        usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
+        mapped_at_creation: false,
+    });
+    hal.queue.write_buffer(&uniforms, 0, &u_bytes);
+
+    let bind_group = hal.device.create_bind_group(&wgpu::BindGroupDescriptor {
+        label: Some("persist-bg"),
+        layout: &pipelines.bind_layout,
+        entries: &[wgpu::BindGroupEntry {
+            binding: 0,
+            resource: uniforms.as_entire_binding(),
+        }],
+    });
+
+    // Asegurar que toda la escritura previa esté en la GPU antes de
+    // empezar a medir frames — si no, el primer frame paga el upload.
+    hal.queue.submit(std::iter::empty::<wgpu::CommandBuffer>());
+    hal.device.poll(wgpu::Maintain::Wait);
+
+    let mut samples: Vec<f64> = Vec::with_capacity(MEASURED);
+    for frame in 0..(WARMUP + MEASURED) {
+        let t0 = Instant::now();
+        let mut encoder = hal.device.create_command_encoder(
+            &wgpu::CommandEncoderDescriptor {
+                label: Some("persist-enc"),
+            },
+        );
+        {
+            let mut pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+                label: Some("persist-pass"),
+                color_attachments: &[Some(wgpu::RenderPassColorAttachment {
+                    view,
+                    resolve_target: None,
+                    ops: wgpu::Operations {
+                        load: wgpu::LoadOp::Clear(wgpu::Color::BLACK),
+                        store: wgpu::StoreOp::Store,
+                    },
+                })],
+                depth_stencil_attachment: None,
+                timestamp_writes: None,
+                occlusion_query_set: None,
+            });
+            pass.set_pipeline(&pipelines.rects);
+            pass.set_bind_group(0, &bind_group, &[]);
+            pass.set_vertex_buffer(0, inst_buf.slice(..));
+            pass.draw(0..6, 0..n);
+        }
+        hal.queue.submit(std::iter::once(encoder.finish()));
+        hal.device.poll(wgpu::Maintain::Wait);
+        let dt = t0.elapsed().as_secs_f64() * 1000.0;
+        if frame >= WARMUP {
+            samples.push(dt);
+        }
+    }
+    median(&mut samples)
+}
+
+fn lcg_point(state: &mut u32) -> (f32, f32, u32) {
+    *state = state.wrapping_mul(1_664_525).wrapping_add(1_013_904_223);
+    let x = (*state % W) as f32;
+    *state = state.wrapping_mul(1_664_525).wrapping_add(1_013_904_223);
+    let y = (*state % H) as f32;
+    *state = state.wrapping_mul(1_664_525).wrapping_add(1_013_904_223);
+    // Colores: piso 128 por canal para que las PNGs de verificación
+    // se vean (sin esto el LCG produce muchos negros casi puros, y
+    // los puntos quedan invisibles en pantalla aunque estén pintados).
+    let r = 128 | ((*state >> 0) & 0x7F) as u8;
+    let g = 128 | ((*state >> 8) & 0x7F) as u8;
+    let b = 128 | ((*state >> 16) & 0x7F) as u8;
+    let rgba = (r as u32) | ((g as u32) << 8) | ((b as u32) << 16) | 0xFF00_0000;
+    (x, y, rgba)
+}
+
+const POINT_PX: f32 = 2.5;
+
+fn median(samples: &mut [f64]) -> f64 {
+    samples.sort_by(|a, b| a.partial_cmp(b).unwrap());
+    samples[samples.len() / 2]
+}
+
+// ============================================================
+// Veredictos
+// ============================================================
+
+fn print_spike_verdict(rows: &[SpikeRow]) {
+    let at_500k = rows.iter().find(|r| r.n == 500_000);
+    match at_500k {
+        Some(r) if r.vello_crashed => {
+            println!("**Veredicto Fase 0:** Vello revienta antes de 500K → directo es el único path posible en ese régimen. PASA cualitativo.");
+        }
+        Some(r) => match r.factor {
+            Some(f) if f >= 5.0 => {
+                println!("**Veredicto Fase 0:** factor a 500K = {:.2}× ≥ 5 → **PASA** (criterio SDD cumplido).", f);
+            }
+            Some(f) => {
+                println!("**Veredicto Fase 0:** factor a 500K = {:.2}× < 5 → **ABORTAR** según criterio literal del SDD.", f);
+                println!("Pero ver si vello revienta a tamaños mayores — eso cambia el veredicto cualitativamente.");
+            }
+            None => {
+                println!("**Veredicto Fase 0:** sin datos para 500K (vello crashed o N no medido). Revisar tabla arriba.");
+            }
+        },
+        None => {
+            println!("**Veredicto Fase 0:** no se midió 500K en este run. Revisar tabla arriba.");
+        }
+    }
+    println!();
+}
+
+fn print_persistent_verdict(
+    directo: &[ScaleRow],
+    vello: &[(u32, f64)],
+) {
+    let d_1m = directo.iter().find(|r| r.n == 1_000_000);
+    let v_1m = vello.iter().find(|(n, _)| *n == 1_000_000);
+    match d_1m {
+        Some(r) if r.fps >= 60.0 => {
+            println!(
+                "**Veredicto persistente @ 1M:** directo {:.1} fps ≥ 60 → **PASA**.",
+                r.fps
+            );
+        }
+        Some(r) => {
+            println!(
+                "**Veredicto persistente @ 1M:** directo {:.1} fps < 60 → falla incluso sin rebuild.",
+                r.fps
+            );
+        }
+        None => println!("**Veredicto:** sin datos a 1M."),
+    }
+    if let (Some(d), Some((_, v_ms))) = (d_1m, v_1m) {
+        let factor = v_ms / d.ms;
+        println!(
+            "**Factor persistente @ 1M:** vello {:.1} ms / directo {:.1} ms = {:.2}× ({})",
+            v_ms,
+            d.ms,
+            factor,
+            if factor >= 5.0 { "≥5×" } else { "<5×" }
+        );
+    }
+    println!();
+}
+
+fn print_scale_verdict(rows: &[ScaleRow]) {
+    let at_1m = rows.iter().find(|r| r.n == 1_000_000);
+    match at_1m {
+        Some(r) if r.fps >= 60.0 => {
+            println!("**Veredicto Fase 0 (objetivo 60 fps @ 1M):** {:.1} fps ≥ 60 → **PASA**.", r.fps);
+        }
+        Some(r) => {
+            println!("**Veredicto Fase 0 (objetivo 60 fps @ 1M):** {:.1} fps < 60 → marginal. ¿Es CPU-bound el bench (write_buffer de 12-20 MB por frame)? Probar también con `mapped_at_creation` para sacar el camino más rápido.", r.fps);
+        }
+        None => {
+            println!("**Veredicto:** sin datos para 1M.");
+        }
+    }
+    println!();
+}
+
+fn print_summary(
+    spike: &[SpikeRow],
+    scale: &[ScaleRow],
+    persist_directo: &[ScaleRow],
+    persist_vello: &[(u32, f64)],
+) {
+    println!("Copiar lo que sigue al chat:");
+    println!();
+    println!("```");
+    println!("rebuild por frame — vello vs directo:");
+    for r in spike {
+        let v = match (r.vello_crashed, r.vello_ms) {
+            (true, _) => "crash".to_string(),
+            (_, Some(ms)) => format!("{:.1}ms", ms),
+            _ => "-".to_string(),
+        };
+        let f = r
+            .factor
+            .map(|x| format!("{:.2}x", x))
+            .unwrap_or_else(|| "-".to_string());
+        println!("  {:>10}  vello={:>10}  directo={:>7.1}ms  factor={}", fmt_int(r.n), v, r.directo_ms, f);
+    }
+    println!();
+    println!("rebuild por frame — escalado directo:");
+    for r in scale {
+        println!("  {:>10}  {:>7.1}ms  {:>5.1}fps  {:>5.2}Mprim/s", fmt_int(r.n), r.ms, r.fps, r.mps);
+    }
+    println!();
+    println!("persistente (datos fijos, sólo redraw):");
+    for r in persist_directo {
+        let v_ms = persist_vello
+            .iter()
+            .find(|(n, _)| *n == r.n)
+            .map(|(_, ms)| format!("{:>7.1}ms", ms))
+            .unwrap_or_else(|| "       —".to_string());
+        let factor = persist_vello
+            .iter()
+            .find(|(n, _)| *n == r.n)
+            .map(|(_, vms)| format!("factor={:.2}x", vms / r.ms))
+            .unwrap_or_else(|| "factor=  —  ".to_string());
+        println!(
+            "  {:>10}  vello={}  directo={:>7.1}ms  {}  {:>5.1}fps  {:>5.2}Mprim/s",
+            fmt_int(r.n),
+            v_ms,
+            r.ms,
+            factor,
+            r.fps,
+            r.mps,
+        );
+    }
+    println!("```");
+}
+
+// ============================================================
+// Textura destino + PNG export
+// ============================================================
+
+fn make_target(device: &wgpu::Device) -> (wgpu::Texture, wgpu::TextureView) {
+    let tex = device.create_texture(&wgpu::TextureDescriptor {
+        label: Some("bench-target"),
+        size: wgpu::Extent3d {
+            width: W,
+            height: H,
+            depth_or_array_layers: 1,
+        },
+        mip_level_count: 1,
+        sample_count: 1,
+        dimension: wgpu::TextureDimension::D2,
+        format: FMT,
+        // RENDER_ATTACHMENT para el directo, STORAGE_BINDING para vello,
+        // TEXTURE_BINDING + COPY_SRC para poder leer (PNG export).
+        usage: wgpu::TextureUsages::RENDER_ATTACHMENT
+            | wgpu::TextureUsages::STORAGE_BINDING
+            | wgpu::TextureUsages::TEXTURE_BINDING
+            | wgpu::TextureUsages::COPY_SRC,
+        view_formats: &[],
+    });
+    let view = tex.create_view(&wgpu::TextureViewDescriptor::default());
+    (tex, view)
+}
+
+fn export_vello_png(
+    hal: &Hal,
+    renderer: &mut vello::Renderer,
+    target: &wgpu::Texture,
+    view: &wgpu::TextureView,
+    n: u32,
+    path: &str,
+) -> Result<(), String> {
+    let mut scene = vello::Scene::new();
+    let mut state: u32 = 0x1234_5678;
+    for _ in 0..n {
+        let (x, y, rgba) = lcg_point(&mut state);
+        let r = (rgba & 0xFF) as u8;
+        let g = ((rgba >> 8) & 0xFF) as u8;
+        let b = ((rgba >> 16) & 0xFF) as u8;
+        let a = ((rgba >> 24) & 0xFF) as u8;
+        scene.fill(
+            Fill::NonZero,
+            Affine::IDENTITY,
+            Color::from_rgba8(r, g, b, a),
+            None,
+            &Rect::new(x as f64, y as f64, x as f64 + POINT_PX as f64, y as f64 + POINT_PX as f64),
+        );
+    }
+    renderer
+        .render_to_texture(
+            &hal.device,
+            &hal.queue,
+            &scene,
+            view,
+            &vello::RenderParams {
+                base_color: palette::css::BLACK,
+                width: W,
+                height: H,
+                antialiasing_method: vello::AaConfig::Area,
+            },
+        )
+        .map_err(|e| format!("{e:?}"))?;
+    write_texture_png(hal, target, path)
+}
+
+fn export_directo_png(
+    hal: &Hal,
+    pipelines: &GpuPipelines,
+    target: &wgpu::Texture,
+    view: &wgpu::TextureView,
+    n: u32,
+    path: &str,
+) -> Result<(), String> {
+    let mut batch = GpuBatch::new(pipelines);
+    let mut state: u32 = 0x1234_5678;
+    for _ in 0..n {
+        let (x, y, rgba) = lcg_point(&mut state);
+        let r = (rgba & 0xFF) as u8;
+        let g = ((rgba >> 8) & 0xFF) as u8;
+        let b = ((rgba >> 16) & 0xFF) as u8;
+        let a = ((rgba >> 24) & 0xFF) as u8;
+        batch.add_rect(x, y, POINT_PX, POINT_PX, Color::from_rgba8(r, g, b, a));
+    }
+    let mut encoder = hal.device.create_command_encoder(
+        &wgpu::CommandEncoderDescriptor {
+            label: Some("png-directo-enc"),
+        },
+    );
+    batch.flush(
+        &hal.device,
+        &hal.queue,
+        &mut encoder,
+        view,
+        (W as f32, H as f32),
+        wgpu::LoadOp::Clear(wgpu::Color::BLACK),
+    );
+    hal.queue.submit(std::iter::once(encoder.finish()));
+    hal.device.poll(wgpu::Maintain::Wait);
+    write_texture_png(hal, target, path)
+}
+
+/// Copia la textura a un buffer mapeable + lee + escribe PNG.
+fn write_texture_png(hal: &Hal, target: &wgpu::Texture, path: &str) -> Result<(), String> {
+    // wgpu pide stride alineado a 256 B en COPY_TEXTURE_TO_BUFFER.
+    let unpadded = (W * 4) as usize;
+    let align = wgpu::COPY_BYTES_PER_ROW_ALIGNMENT as usize;
+    let padded = ((unpadded + align - 1) / align) * align;
+    let buf_size = (padded * H as usize) as u64;
+
+    let buf = hal.device.create_buffer(&wgpu::BufferDescriptor {
+        label: Some("png-readback"),
+        size: buf_size,
+        usage: wgpu::BufferUsages::MAP_READ | wgpu::BufferUsages::COPY_DST,
+        mapped_at_creation: false,
+    });
+    let mut encoder = hal.device.create_command_encoder(
+        &wgpu::CommandEncoderDescriptor {
+            label: Some("png-copy-enc"),
+        },
+    );
+    encoder.copy_texture_to_buffer(
+        wgpu::TexelCopyTextureInfo {
+            texture: target,
+            mip_level: 0,
+            origin: wgpu::Origin3d::ZERO,
+            aspect: wgpu::TextureAspect::All,
+        },
+        wgpu::TexelCopyBufferInfo {
+            buffer: &buf,
+            layout: wgpu::TexelCopyBufferLayout {
+                offset: 0,
+                bytes_per_row: Some(padded as u32),
+                rows_per_image: Some(H),
+            },
+        },
+        wgpu::Extent3d {
+            width: W,
+            height: H,
+            depth_or_array_layers: 1,
+        },
+    );
+    hal.queue.submit(std::iter::once(encoder.finish()));
+
+    let slice = buf.slice(..);
+    let (tx, rx) = std::sync::mpsc::channel();
+    slice.map_async(wgpu::MapMode::Read, move |r| {
+        let _ = tx.send(r);
+    });
+    hal.device.poll(wgpu::Maintain::Wait);
+    rx.recv().map_err(|e| e.to_string())?.map_err(|e| e.to_string())?;
+    let data = slice.get_mapped_range();
+
+    // Desempaquetar las filas (skip padding) y escribir PNG.
+    let mut pixels = Vec::with_capacity((W * H * 4) as usize);
+    for row in 0..H {
+        let start = row as usize * padded;
+        let end = start + unpadded;
+        pixels.extend_from_slice(&data[start..end]);
+    }
+    drop(data);
+    buf.unmap();
+
+    let file = File::create(path).map_err(|e| e.to_string())?;
+    let writer = BufWriter::new(file);
+    let mut encoder = png::Encoder::new(writer, W, H);
+    encoder.set_color(png::ColorType::Rgba);
+    encoder.set_depth(png::BitDepth::Eight);
+    let mut w = encoder.write_header().map_err(|e| e.to_string())?;
+    w.write_image_data(&pixels).map_err(|e| e.to_string())?;
+    Ok(())
+}
diff --git a/llimphi-hal/Cargo.toml b/llimphi-hal/Cargo.toml
new file mode 100644
index 0000000..f9288fd
--- /dev/null
+++ b/llimphi-hal/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+name = "llimphi-hal"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+
+[dependencies]
+wgpu = { workspace = true }
+raw-window-handle = { workspace = true }
+winit = { workspace = true }
+pollster = { workspace = true }
+
+[[example]]
+name = "clear_screen"
+path = "examples/clear_screen.rs"
diff --git a/llimphi-hal/LEEME.md b/llimphi-hal/LEEME.md
new file mode 100644
index 0000000..6f0bb0a
--- /dev/null
+++ b/llimphi-hal/LEEME.md
@@ -0,0 +1,10 @@
+# llimphi-hal
+
+> Abstracción de superficie de [llimphi](../README.md). Multi-plataforma.
+
+Trait `Surface` que abstrae window/framebuffer/canvas. Implementaciones: `winit` (Linux/macOS/Windows desktop), `android` (NDK), `wawa` (framebuffer del kernel). El resto del stack llimphi habla `Surface`; mover Wayland → Wawa es cambiar el HAL, no el árbol gráfico.
+
+## Deps
+
+- `winit`, `raw-window-handle`
+- `serde`, `wgpu` (re-export para que widgets puedan paint_with)
diff --git a/llimphi-hal/README.md b/llimphi-hal/README.md
new file mode 100644
index 0000000..85b907b
--- /dev/null
+++ b/llimphi-hal/README.md
@@ -0,0 +1,10 @@
+# llimphi-hal
+
+> Surface abstraction of [llimphi](../README.md). Multi-platform.
+
+`Surface` trait that abstracts window/framebuffer/canvas. Implementations: `winit` (Linux/macOS/Windows desktop), `android` (NDK), `wawa` (kernel framebuffer). The rest of the llimphi stack talks to `Surface`; moving Wayland → Wawa is swapping the HAL, not the scene tree.
+
+## Deps
+
+- `winit`, `raw-window-handle`
+- `serde`, `wgpu` (re-export so widgets can paint_with)
diff --git a/llimphi-hal/examples/clear_screen.rs b/llimphi-hal/examples/clear_screen.rs
new file mode 100644
index 0000000..0b1233c
--- /dev/null
+++ b/llimphi-hal/examples/clear_screen.rs
@@ -0,0 +1,135 @@
+//! Fase 1 de Llimphi: ventana gris plomo a la frecuencia máxima del display.
+//!
+//! Corre con: `cargo run -p llimphi-hal --example clear_screen --release`.
+//!
+//! Imprime fps por stderr cada segundo. En un panel de 144 Hz con AutoVsync
+//! debe estabilizarse cerca de 144; en uno de 60 Hz, cerca de 60.
+
+use std::sync::Arc;
+use std::time::Instant;
+
+use llimphi_hal::winit::application::ApplicationHandler;
+use llimphi_hal::winit::dpi::LogicalSize;
+use llimphi_hal::winit::event::WindowEvent;
+use llimphi_hal::winit::event_loop::{ActiveEventLoop, ControlFlow, EventLoop};
+use llimphi_hal::winit::window::{Window, WindowAttributes, WindowId};
+use llimphi_hal::{wgpu, Hal, Surface, WinitSurface};
+
+const LEAD_GRAY: wgpu::Color = wgpu::Color {
+    r: 0.235,
+    g: 0.239,
+    b: 0.247,
+    a: 1.0,
+};
+
+struct State {
+    window: Arc<Window>,
+    hal: Hal,
+    surface: WinitSurface,
+}
+
+struct App {
+    state: Option<State>,
+    frames: u64,
+    last_report: Instant,
+}
+
+impl ApplicationHandler for App {
+    fn resumed(&mut self, event_loop: &ActiveEventLoop) {
+        if self.state.is_some() {
+            return;
+        }
+        let window = event_loop
+            .create_window(
+                WindowAttributes::default()
+                    .with_title("llimphi · clear_screen")
+                    .with_inner_size(LogicalSize::new(960u32, 540u32)),
+            )
+            .expect("create window");
+        let window = Arc::new(window);
+        let hal = pollster::block_on(Hal::new(None)).expect("hal");
+        let surface = WinitSurface::new(&hal, window.clone()).expect("surface");
+        window.request_redraw();
+        self.state = Some(State {
+            window,
+            hal,
+            surface,
+        });
+    }
+
+    fn window_event(
+        &mut self,
+        event_loop: &ActiveEventLoop,
+        _id: WindowId,
+        event: WindowEvent,
+    ) {
+        let Some(state) = self.state.as_mut() else {
+            return;
+        };
+        match event {
+            WindowEvent::CloseRequested => event_loop.exit(),
+            WindowEvent::Resized(size) => {
+                state.surface.resize(size.width, size.height);
+                state.window.request_redraw();
+            }
+            WindowEvent::RedrawRequested => {
+                let frame = match state.surface.acquire() {
+                    Ok(f) => f,
+                    Err(_) => {
+                        let (w, h) = state.surface.size();
+                        state.surface.resize(w, h);
+                        state.window.request_redraw();
+                        return;
+                    }
+                };
+                let mut encoder =
+                    state
+                        .hal
+                        .device
+                        .create_command_encoder(&wgpu::CommandEncoderDescriptor {
+                            label: Some("clear_screen-encoder"),
+                        });
+                {
+                    let _pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+                        label: Some("clear_screen-pass"),
+                        color_attachments: &[Some(wgpu::RenderPassColorAttachment {
+                            view: frame.view(),
+                            resolve_target: None,
+                            ops: wgpu::Operations {
+                                load: wgpu::LoadOp::Clear(LEAD_GRAY),
+                                store: wgpu::StoreOp::Store,
+                            },
+                        })],
+                        depth_stencil_attachment: None,
+                        timestamp_writes: None,
+                        occlusion_query_set: None,
+                    });
+                }
+                state.hal.queue.submit(std::iter::once(encoder.finish()));
+                state.surface.present(frame, &state.hal);
+
+                self.frames += 1;
+                let elapsed = self.last_report.elapsed();
+                if elapsed.as_secs() >= 1 {
+                    let fps = self.frames as f64 / elapsed.as_secs_f64();
+                    eprintln!("llimphi · clear_screen — {fps:.1} fps");
+                    self.frames = 0;
+                    self.last_report = Instant::now();
+                }
+                state.window.request_redraw();
+            }
+            _ => {}
+        }
+    }
+}
+
+fn main() {
+    let event_loop = EventLoop::new().expect("event loop");
+    event_loop.set_control_flow(ControlFlow::Poll);
+    let mut app = App {
+        state: None,
+        frames: 0,
+        last_report: Instant::now(),
+    };
+    event_loop.run_app(&mut app).expect("run app");
+}
diff --git a/llimphi-hal/src/lib.rs b/llimphi-hal/src/lib.rs
new file mode 100644
index 0000000..36822db
--- /dev/null
+++ b/llimphi-hal/src/lib.rs
@@ -0,0 +1,823 @@
+//! llimphi-hal — Puente al Silicio.
+//!
+//! Aísla el motor del sistema operativo. Pinta en ventana Wayland/X11
+//! (vía `mirada` en producción, vía `winit` en dev) o framebuffer directo
+//! del kernel `wawa` (TODO). Trait `Surface` abstracto + struct `Hal`
+//! que posee Instance/Adapter/Device/Queue de wgpu.
+
+use std::sync::Arc;
+
+pub use raw_window_handle;
+pub use wgpu;
+pub use winit;
+
+use winit::window::Window;
+
+/// Errores al adquirir un frame de la superficie.
+#[derive(Debug)]
+pub enum SurfaceError {
+    Lost,
+    Outdated,
+    OutOfMemory,
+    Timeout,
+    Other(String),
+}
+
+impl std::fmt::Display for SurfaceError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Lost => write!(f, "surface lost"),
+            Self::Outdated => write!(f, "surface outdated"),
+            Self::OutOfMemory => write!(f, "surface out of memory"),
+            Self::Timeout => write!(f, "surface timeout"),
+            Self::Other(s) => write!(f, "surface error: {s}"),
+        }
+    }
+}
+
+impl std::error::Error for SurfaceError {}
+
+/// Errores al construir Hal o crear una Surface.
+#[derive(Debug)]
+pub enum HalError {
+    NoAdapter,
+    RequestDevice(String),
+    CreateSurface(String),
+}
+
+impl std::fmt::Display for HalError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::NoAdapter => write!(f, "no GPU adapter available"),
+            Self::RequestDevice(s) => write!(f, "request_device failed: {s}"),
+            Self::CreateSurface(s) => write!(f, "create_surface failed: {s}"),
+        }
+    }
+}
+
+impl std::error::Error for HalError {}
+
+/// Superficie gráfica donde llimphi pinta.
+///
+/// Vello (rasterizador) emite a una textura intermedia con storage binding
+/// (la única forma portable: los formatos de swapchain no aceptan writes
+/// de compute shader en muchos adapters). En `present` se blittea la
+/// intermedia al swapchain real y se hace el flip.
+///
+/// Implementaciones:
+/// - [`WinitSurface`]: ventana Wayland/X11 (dev + producción vía mirada).
+/// - `WawaFramebufferSurface` (TODO): framebuffer directo del kernel wawa.
+pub trait Surface {
+    fn size(&self) -> (u32, u32);
+    fn resize(&mut self, width: u32, height: u32);
+    /// Adquiere la textura intermedia donde el raster pinta este frame.
+    fn acquire(&mut self) -> Result<Frame, SurfaceError>;
+    /// Blittea la intermedia al swapchain y la presenta.
+    fn present(&mut self, frame: Frame, hal: &Hal);
+}
+
+/// Frame en curso. `view()` devuelve la textura intermedia (Rgba8Unorm,
+/// STORAGE_BINDING) lista para que vello escriba sobre ella.
+pub struct Frame {
+    surface_texture: wgpu::SurfaceTexture,
+    surface_view: wgpu::TextureView,
+    intermediate_view: wgpu::TextureView,
+    /// Textura secundaria para la capa de overlay (menús/paleta/modal)
+    /// cuando hay contenido `gpu_paint` que la taparía. El overlay se
+    /// rasteriza acá con fondo transparente y luego se compone con
+    /// alpha SOBRE la intermedia (que ya tiene UI + video). Ver
+    /// [`OverlayCompositor`] y el eventloop de `llimphi-ui`.
+    overlay_view: wgpu::TextureView,
+    width: u32,
+    height: u32,
+}
+
+impl Frame {
+    pub fn view(&self) -> &wgpu::TextureView {
+        &self.intermediate_view
+    }
+
+    /// Vista de la textura de overlay (mismo tamaño y formato que la
+    /// intermedia). Sólo se usa en el camino de compositing del overlay.
+    pub fn overlay_view(&self) -> &wgpu::TextureView {
+        &self.overlay_view
+    }
+
+    pub fn size(&self) -> (u32, u32) {
+        (self.width, self.height)
+    }
+}
+
+/// Estado wgpu compartido. Una instancia por proceso. `Device` y `Queue`
+/// son `Arc` internamente, así que clonar es barato.
+pub struct Hal {
+    pub instance: wgpu::Instance,
+    pub adapter: wgpu::Adapter,
+    pub device: wgpu::Device,
+    pub queue: wgpu::Queue,
+}
+
+impl Hal {
+    /// Construye Hal pidiendo un adapter compatible con una surface dada
+    /// (recomendado: pasar `Some(&surface)` para garantizar que el adapter
+    /// elegido sabe presentar a esa surface).
+    pub async fn new(
+        compatible_surface: Option<&wgpu::Surface<'static>>,
+    ) -> Result<Self, HalError> {
+        let opts = wgpu::RequestAdapterOptions {
+            power_preference: wgpu::PowerPreference::HighPerformance,
+            force_fallback_adapter: false,
+            compatible_surface,
+        };
+        // Preferimos backends PRIMARY (Vulkan/Metal/DX12). El backend GL de
+        // wgpu sobre Mesa/Wayland tiene un bug de teardown: al soltar la
+        // instancia, `eglTerminate` marshalea sobre una conexión Wayland ya
+        // muerta (`wl_proxy_marshal`) y revienta con SIGSEGV. Con
+        // `Backends::all()` (el default), wgpu puede elegir GL aun habiendo
+        // Vulkan, y la app crashea al cerrar/teardown. Forzamos PRIMARY; si la
+        // máquina no tiene Vulkan/Metal/DX12 (VM vieja, etc.) caemos a todos
+        // los backends —incluido GL— para no dejarla sin gráficos. En el
+        // camino de escritorio `compatible_surface` es `None` (la surface se
+        // crea después contra esta misma instancia), así que cambiar de
+        // instancia aquí es seguro.
+        let primary = wgpu::Instance::new(&wgpu::InstanceDescriptor {
+            backends: wgpu::Backends::PRIMARY,
+            ..Default::default()
+        });
+        let (instance, adapter) = match primary.request_adapter(&opts).await {
+            Some(a) => (primary, a),
+            None => {
+                let all = wgpu::Instance::new(&wgpu::InstanceDescriptor::default());
+                let a = all.request_adapter(&opts).await.ok_or(HalError::NoAdapter)?;
+                (all, a)
+            }
+        };
+        // `Limits::default()` cubre los 5 storage buffers/stage que vello
+        // necesita. `downlevel_defaults()` solo expone 4 y rompe el raster.
+        // Si el adapter no lo aguanta, `using_resolution` recorta lo recortable
+        // (texturas/buffers grandes) preservando los conteos mínimos.
+        let limits = wgpu::Limits::default().using_resolution(adapter.limits());
+        let (device, queue) = adapter
+            .request_device(
+                &wgpu::DeviceDescriptor {
+                    label: Some("llimphi-hal-device"),
+                    required_features: wgpu::Features::empty(),
+                    required_limits: limits,
+                    memory_hints: wgpu::MemoryHints::Performance,
+                },
+                None,
+            )
+            .await
+            .map_err(|e| HalError::RequestDevice(e.to_string()))?;
+        Ok(Self {
+            instance,
+            adapter,
+            device,
+            queue,
+        })
+    }
+
+    /// Construye el `Hal` **y** una [`RawSurface`] a la vez, eligiendo el adaptador
+    /// **compatible con esa surface** — el dispositivo que el compositor sabe
+    /// presentar. Es el camino correcto para el backend layer-shell de `pata`.
+    ///
+    /// El problema que resuelve: en sistemas multi-GPU (Optimus), pedir el
+    /// adaptador sin pista de surface (`new(None)` con `HighPerformance`) puede
+    /// elegir la dGPU mientras el compositor compone en la iGPU → los dmabuf
+    /// cruzan dispositivos y `get_capabilities` devuelve 0 formatos (la surface
+    /// "no expone formatos"). Pasar `compatible_surface` ata el adaptador al
+    /// dispositivo del compositor. Como la surface hace falta ANTES de pedir el
+    /// adaptador, y `new` crea la instancia internamente, este constructor une los
+    /// dos pasos.
+    ///
+    /// `make_target` reconstruye el `SurfaceTargetUnsafe` cada vez que se llama
+    /// (los `RawHandle` son `Copy`): `create_surface_unsafe` consume el target y
+    /// puede que probemos dos instancias (PRIMARY y, si no hay adaptador, todos
+    /// los backends — el GL de Mesa/Wayland revienta en teardown, por eso PRIMARY
+    /// primero, igual que [`Hal::new`]).
+    ///
+    /// # Safety
+    /// Los handles que produce `make_target` deben apuntar a objetos Wayland/…
+    /// vivos durante toda la vida de la `RawSurface` devuelta.
+    pub async unsafe fn new_for_raw_surface(
+        make_target: impl Fn() -> wgpu::SurfaceTargetUnsafe,
+        width: u32,
+        height: u32,
+    ) -> Result<(Self, RawSurface), HalError> {
+        // PRIMARY (Vulkan/Metal/DX12) primero; si no hay adaptador compatible, a
+        // todos los backends recreando instancia y surface.
+        let primary = wgpu::Instance::new(&wgpu::InstanceDescriptor {
+            backends: wgpu::Backends::PRIMARY,
+            ..Default::default()
+        });
+        let prim_surface = unsafe { primary.create_surface_unsafe(make_target()) }
+            .map_err(|e| HalError::CreateSurface(e.to_string()))?;
+        let prim_adapter = primary
+            .request_adapter(&wgpu::RequestAdapterOptions {
+                power_preference: wgpu::PowerPreference::HighPerformance,
+                force_fallback_adapter: false,
+                compatible_surface: Some(&prim_surface),
+            })
+            .await;
+        let (instance, adapter, wgpu_surface) = match prim_adapter {
+            Some(a) => (primary, a, prim_surface),
+            None => {
+                let all = wgpu::Instance::new(&wgpu::InstanceDescriptor::default());
+                let surface = unsafe { all.create_surface_unsafe(make_target()) }
+                    .map_err(|e| HalError::CreateSurface(e.to_string()))?;
+                let a = all
+                    .request_adapter(&wgpu::RequestAdapterOptions {
+                        power_preference: wgpu::PowerPreference::HighPerformance,
+                        force_fallback_adapter: false,
+                        compatible_surface: Some(&surface),
+                    })
+                    .await
+                    .ok_or(HalError::NoAdapter)?;
+                (all, a, surface)
+            }
+        };
+        let limits = wgpu::Limits::default().using_resolution(adapter.limits());
+        let (device, queue) = adapter
+            .request_device(
+                &wgpu::DeviceDescriptor {
+                    label: Some("llimphi-hal-device"),
+                    required_features: wgpu::Features::empty(),
+                    required_limits: limits,
+                    memory_hints: wgpu::MemoryHints::Performance,
+                },
+                None,
+            )
+            .await
+            .map_err(|e| HalError::RequestDevice(e.to_string()))?;
+        let hal = Self {
+            instance,
+            adapter,
+            device,
+            queue,
+        };
+        let surface = RawSurface::from_surface(&hal, wgpu_surface, width, height)?;
+        Ok((hal, surface))
+    }
+}
+
+/// Surface basada en `winit::window::Window`. Mantiene una textura
+/// intermedia `Rgba8Unorm` con storage binding (donde pinta vello) y
+/// un `TextureBlitter` que la copia al swapchain al presentar.
+pub struct WinitSurface {
+    _window: Arc<Window>,
+    surface: wgpu::Surface<'static>,
+    config: wgpu::SurfaceConfiguration,
+    device: wgpu::Device,
+    intermediate: wgpu::Texture,
+    intermediate_view: wgpu::TextureView,
+    /// Textura de la capa de overlay (ver [`Frame::overlay_view`]).
+    overlay: wgpu::Texture,
+    overlay_view: wgpu::TextureView,
+    blitter: wgpu::util::TextureBlitter,
+}
+
+const INTERMEDIATE_FORMAT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba8Unorm;
+
+impl WinitSurface {
+    /// Constructor "feliz": crea la `wgpu::Surface` internamente.
+    /// Conveniente en desktop donde la secuencia normal es
+    /// `Hal::new(None)` → `WinitSurface::new(hal, window)`. **En Android
+    /// usar [`WinitSurface::from_surface`]** — allí la surface debe
+    /// existir antes del `request_adapter(compatible_surface=Some(...))`,
+    /// y crearla dos veces sobre la misma `ANativeWindow` falla con
+    /// `ERROR_NATIVE_WINDOW_IN_USE_KHR`.
+    pub fn new(hal: &Hal, window: Arc<Window>) -> Result<Self, HalError> {
+        let surface = hal
+            .instance
+            .create_surface(window.clone())
+            .map_err(|e| HalError::CreateSurface(e.to_string()))?;
+        Self::from_surface(hal, window, surface)
+    }
+
+    /// Constructor reutilizable: arma el `WinitSurface` envolviendo una
+    /// `wgpu::Surface` ya creada por el caller. Necesario en Android
+    /// porque el orden allí es:
+    ///
+    /// 1. `instance.create_surface(window)`
+    /// 2. `instance.request_adapter(compatible_surface=Some(&surface))`
+    /// 3. `adapter.request_device(...)`
+    /// 4. `WinitSurface::from_surface(hal, window, surface)`
+    ///
+    /// — no se puede dropear la surface entre 2 y 4 ni recrearla, porque
+    /// Android reserva la `ANativeWindow` por VkSurface y rechaza un
+    /// segundo `vkCreateAndroidSurfaceKHR` sobre la misma ventana.
+    pub fn from_surface(
+        hal: &Hal,
+        window: Arc<Window>,
+        surface: wgpu::Surface<'static>,
+    ) -> Result<Self, HalError> {
+        let size = window.inner_size();
+        let caps = surface.get_capabilities(&hal.adapter);
+        // Preferimos Bgra8Unorm o Rgba8Unorm (no sRGB) para que el blit
+        // desde la intermedia lineal preserve los valores tal cual.
+        let format = caps
+            .formats
+            .iter()
+            .copied()
+            .find(|f| matches!(f, wgpu::TextureFormat::Bgra8Unorm | wgpu::TextureFormat::Rgba8Unorm))
+            .unwrap_or(caps.formats[0]);
+        let config = wgpu::SurfaceConfiguration {
+            // El swapchain solo necesita render-attachment: vello no escribe
+            // directo, escribe a la intermedia y luego se blittea.
+            usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
+            format,
+            width: size.width.max(1),
+            height: size.height.max(1),
+            present_mode: choose_present_mode(&caps),
+            desired_maximum_frame_latency: 2,
+            alpha_mode: caps.alpha_modes[0],
+            view_formats: vec![],
+        };
+        surface.configure(&hal.device, &config);
+        let (intermediate, intermediate_view) =
+            create_intermediate(&hal.device, config.width, config.height);
+        let (overlay, overlay_view) =
+            create_intermediate(&hal.device, config.width, config.height);
+        let blitter = wgpu::util::TextureBlitter::new(&hal.device, format);
+        Ok(Self {
+            _window: window,
+            surface,
+            config,
+            device: hal.device.clone(),
+            intermediate,
+            intermediate_view,
+            overlay,
+            overlay_view,
+            blitter,
+        })
+    }
+
+    pub fn format(&self) -> wgpu::TextureFormat {
+        self.config.format
+    }
+}
+
+/// Surface sobre una `wgpu::Surface` creada desde **handles raw** (sin
+/// `winit::Window`): la usa el backend `wlr-layer-shell` de `pata` para pintar
+/// en una *layer surface* de Wayland (barras/paneles al nivel de eww/waybar).
+/// Misma mecánica que [`WinitSurface`] —intermedia `Rgba8Unorm` + blit al
+/// swapchain— pero el tamaño se pasa explícito porque no hay ventana que
+/// consultar. La `wgpu::Surface` la crea el caller (típicamente con
+/// `instance.create_surface_unsafe` desde los punteros `wl_display`/`wl_surface`).
+pub struct RawSurface {
+    surface: wgpu::Surface<'static>,
+    config: wgpu::SurfaceConfiguration,
+    device: wgpu::Device,
+    intermediate: wgpu::Texture,
+    intermediate_view: wgpu::TextureView,
+    overlay: wgpu::Texture,
+    overlay_view: wgpu::TextureView,
+    blitter: wgpu::util::TextureBlitter,
+}
+
+impl RawSurface {
+    /// Envuelve una `wgpu::Surface` ya creada, con el tamaño físico inicial.
+    pub fn from_surface(
+        hal: &Hal,
+        surface: wgpu::Surface<'static>,
+        width: u32,
+        height: u32,
+    ) -> Result<Self, HalError> {
+        let caps = surface.get_capabilities(&hal.adapter);
+        let info = hal.adapter.get_info();
+        // Si la superficie no expone formatos, el compositor no la soporta por
+        // este backend (Vulkan/GL WSI): error claro en vez de un panic por
+        // indexar `formats[0]` sobre una lista vacía.
+        let format = match caps
+            .formats
+            .iter()
+            .copied()
+            .find(|f| matches!(f, wgpu::TextureFormat::Bgra8Unorm | wgpu::TextureFormat::Rgba8Unorm))
+            .or_else(|| caps.formats.first().copied())
+        {
+            Some(f) => f,
+            None => {
+                return Err(HalError::CreateSurface(format!(
+                    "la superficie no expone formatos (adapter {:?}/{:?}): el compositor no la soporta por {:?} WSI",
+                    info.backend, info.device_type, info.backend
+                )))
+            }
+        };
+        let alpha_mode = caps
+            .alpha_modes
+            .first()
+            .copied()
+            .unwrap_or(wgpu::CompositeAlphaMode::Auto);
+        let config = wgpu::SurfaceConfiguration {
+            usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
+            format,
+            width: width.max(1),
+            height: height.max(1),
+            present_mode: choose_present_mode(&caps),
+            desired_maximum_frame_latency: 2,
+            alpha_mode,
+            view_formats: vec![],
+        };
+        surface.configure(&hal.device, &config);
+        let (intermediate, intermediate_view) =
+            create_intermediate(&hal.device, config.width, config.height);
+        let (overlay, overlay_view) =
+            create_intermediate(&hal.device, config.width, config.height);
+        let blitter = wgpu::util::TextureBlitter::new(&hal.device, format);
+        Ok(Self {
+            surface,
+            config,
+            device: hal.device.clone(),
+            intermediate,
+            intermediate_view,
+            overlay,
+            overlay_view,
+            blitter,
+        })
+    }
+
+    pub fn format(&self) -> wgpu::TextureFormat {
+        self.config.format
+    }
+}
+
+impl Surface for RawSurface {
+    fn size(&self) -> (u32, u32) {
+        (self.config.width, self.config.height)
+    }
+
+    fn resize(&mut self, width: u32, height: u32) {
+        let (w, h) = (width.max(1), height.max(1));
+        // Sin cambio de tamaño NO reconfiguramos. El backend layer-shell de `pata`
+        // llama a `resize` en cada cuadro (no tiene eventos de resize como winit);
+        // reconfigurar el swapchain por cuadro lo reconstruye una y otra vez, y en
+        // Vulkan WSI eso **destruye el `wl_buffer` recién presentado antes de que el
+        // compositor lo componga** — wlroots lo tolera, smithay (mirada) no, y la
+        // superficie queda en negro (el compositor ve `buffer=None`).
+        if self.config.width == w && self.config.height == h {
+            return;
+        }
+        self.config.width = w;
+        self.config.height = h;
+        self.surface.configure(&self.device, &self.config);
+        let (tex, view) = create_intermediate(&self.device, self.config.width, self.config.height);
+        self.intermediate = tex;
+        self.intermediate_view = view;
+        let (otex, oview) =
+            create_intermediate(&self.device, self.config.width, self.config.height);
+        self.overlay = otex;
+        self.overlay_view = oview;
+    }
+
+    fn acquire(&mut self) -> Result<Frame, SurfaceError> {
+        let texture = match self.surface.get_current_texture() {
+            Ok(t) => t,
+            // El backend layer-shell no tiene un evento de resize que reconfigure
+            // el swapchain; si quedó obsoleto/perdido, lo reconstruimos aquí mismo
+            // y reintentamos una vez. Sin esto el panel quedaría en negro para
+            // siempre tras el primer `Outdated`.
+            Err(e @ (wgpu::SurfaceError::Outdated | wgpu::SurfaceError::Lost)) => {
+                self.surface.configure(&self.device, &self.config);
+                self.surface.get_current_texture().map_err(|_| match e {
+                    wgpu::SurfaceError::Lost => SurfaceError::Lost,
+                    _ => SurfaceError::Outdated,
+                })?
+            }
+            Err(wgpu::SurfaceError::OutOfMemory) => return Err(SurfaceError::OutOfMemory),
+            Err(wgpu::SurfaceError::Timeout) => return Err(SurfaceError::Timeout),
+            Err(other) => return Err(SurfaceError::Other(format!("{other:?}"))),
+        };
+        let surface_view = texture
+            .texture
+            .create_view(&wgpu::TextureViewDescriptor::default());
+        Ok(Frame {
+            surface_texture: texture,
+            surface_view,
+            intermediate_view: self.intermediate_view.clone(),
+            overlay_view: self.overlay_view.clone(),
+            width: self.config.width,
+            height: self.config.height,
+        })
+    }
+
+    fn present(&mut self, frame: Frame, hal: &Hal) {
+        let mut encoder = hal.device.create_command_encoder(&wgpu::CommandEncoderDescriptor {
+            label: Some("llimphi-blit-raw"),
+        });
+        self.blitter.copy(
+            &hal.device,
+            &mut encoder,
+            &frame.intermediate_view,
+            &frame.surface_view,
+        );
+        hal.queue.submit(std::iter::once(encoder.finish()));
+        frame.surface_texture.present();
+    }
+}
+
+/// Elige el modo de presentación del swapchain.
+///
+/// Default: **Mailbox** si el driver lo expone, sino **Fifo**. La razón es
+/// el cuelgue observado en las apps Llimphi (investigación 2026-05-30): con
+/// `Fifo`/`AutoVsync`, `surface.get_current_texture()` **bloquea** esperando
+/// el frame-callback del compositor Wayland — si el compositor no suelta un
+/// buffer, el hilo del UI queda dormido (CPU baja, deadlock aparente).
+/// `Mailbox` no bloquea (triple-buffer, descarta frames viejos), así que el
+/// loop nunca se queda esperando al compositor. `Fifo` está garantizado por
+/// spec como fallback.
+///
+/// Override por entorno para A/B sin recompilar (útil en la laptop con
+/// display real): `LLIMPHI_PRESENT_MODE = fifo | mailbox | immediate |
+/// fifo_relaxed`. Si el modo pedido no está soportado, se ignora y se aplica
+/// el default.
+fn choose_present_mode(caps: &wgpu::SurfaceCapabilities) -> wgpu::PresentMode {
+    use wgpu::PresentMode::{Fifo, FifoRelaxed, Immediate, Mailbox};
+    if let Ok(v) = std::env::var("LLIMPHI_PRESENT_MODE") {
+        let want = match v.trim().to_ascii_lowercase().as_str() {
+            "fifo" | "vsync" => Some(Fifo),
+            "fifo_relaxed" | "fiforelaxed" => Some(FifoRelaxed),
+            "mailbox" => Some(Mailbox),
+            "immediate" | "novsync" => Some(Immediate),
+            _ => None,
+        };
+        if let Some(m) = want {
+            if caps.present_modes.contains(&m) {
+                return m;
+            }
+        }
+    }
+    if caps.present_modes.contains(&Mailbox) {
+        Mailbox
+    } else {
+        Fifo
+    }
+}
+
+fn create_intermediate(
+    device: &wgpu::Device,
+    width: u32,
+    height: u32,
+) -> (wgpu::Texture, wgpu::TextureView) {
+    let texture = device.create_texture(&wgpu::TextureDescriptor {
+        label: Some("llimphi-intermediate"),
+        size: wgpu::Extent3d {
+            width,
+            height,
+            depth_or_array_layers: 1,
+        },
+        mip_level_count: 1,
+        sample_count: 1,
+        dimension: wgpu::TextureDimension::D2,
+        format: INTERMEDIATE_FORMAT,
+        // STORAGE_BINDING: vello escribe via compute shader.
+        // TEXTURE_BINDING: el blitter la lee como sampler source.
+        // RENDER_ATTACHMENT: render passes con clear-only (sin vello)
+        //   también escriben acá — desktop drivers lo tolerían sin este
+        //   flag, Adreno con validación estricta rechaza el frame.
+        usage: wgpu::TextureUsages::STORAGE_BINDING
+            | wgpu::TextureUsages::TEXTURE_BINDING
+            | wgpu::TextureUsages::RENDER_ATTACHMENT,
+        view_formats: &[],
+    });
+    let view = texture.create_view(&wgpu::TextureViewDescriptor::default());
+    (texture, view)
+}
+
+/// Compositor de la capa de overlay: alpha-blittea una textura source (el
+/// overlay rasterizado por vello sobre fondo transparente) SOBRE una textura
+/// target (la intermedia, que ya tiene la UI principal + el video pintado por
+/// `gpu_paint`). Resuelve el z-order: sin esto, el blit de `gpu_paint` (video)
+/// queda encima de la capa vello del overlay y los menús se ven por debajo del
+/// video.
+///
+/// Es un pase de pantalla completa (triángulo) que samplea el source y lo
+/// emite con alpha-over. El factor de blend asume alpha **premultiplicado**
+/// (lo que produce vello); si en pantalla los menús se ven con halos oscuros o
+/// transparencia rara, exportar `LLIMPHI_OVERLAY_BLEND=straight` para usar
+/// alpha recto sin recompilar.
+pub struct OverlayCompositor {
+    pipeline: wgpu::RenderPipeline,
+    sampler: wgpu::Sampler,
+    bind_layout: wgpu::BindGroupLayout,
+}
+
+impl OverlayCompositor {
+    pub fn new(device: &wgpu::Device) -> Self {
+        let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
+            label: Some("llimphi-overlay-composite"),
+            source: wgpu::ShaderSource::Wgsl(OVERLAY_COMPOSITE_WGSL.into()),
+        });
+        let bind_layout = device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
+            label: Some("llimphi-overlay-bgl"),
+            entries: &[
+                wgpu::BindGroupLayoutEntry {
+                    binding: 0,
+                    visibility: wgpu::ShaderStages::FRAGMENT,
+                    ty: wgpu::BindingType::Texture {
+                        sample_type: wgpu::TextureSampleType::Float { filterable: true },
+                        view_dimension: wgpu::TextureViewDimension::D2,
+                        multisampled: false,
+                    },
+                    count: None,
+                },
+                wgpu::BindGroupLayoutEntry {
+                    binding: 1,
+                    visibility: wgpu::ShaderStages::FRAGMENT,
+                    ty: wgpu::BindingType::Sampler(wgpu::SamplerBindingType::Filtering),
+                    count: None,
+                },
+            ],
+        });
+        let pipeline_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+            label: Some("llimphi-overlay-pl"),
+            bind_group_layouts: &[&bind_layout],
+            push_constant_ranges: &[],
+        });
+        // Alpha-over. `src_factor` distingue premultiplicado (One) de recto
+        // (SrcAlpha); el resto es siempre OneMinusSrcAlpha.
+        let straight = std::env::var("LLIMPHI_OVERLAY_BLEND")
+            .map(|v| v.trim().eq_ignore_ascii_case("straight"))
+            .unwrap_or(false);
+        let color_src = if straight {
+            wgpu::BlendFactor::SrcAlpha
+        } else {
+            wgpu::BlendFactor::One
+        };
+        let pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+            label: Some("llimphi-overlay-pipe"),
+            layout: Some(&pipeline_layout),
+            vertex: wgpu::VertexState {
+                module: &shader,
+                entry_point: Some("vs"),
+                buffers: &[],
+                compilation_options: Default::default(),
+            },
+            fragment: Some(wgpu::FragmentState {
+                module: &shader,
+                entry_point: Some("fs"),
+                targets: &[Some(wgpu::ColorTargetState {
+                    format: INTERMEDIATE_FORMAT,
+                    blend: Some(wgpu::BlendState {
+                        color: wgpu::BlendComponent {
+                            src_factor: color_src,
+                            dst_factor: wgpu::BlendFactor::OneMinusSrcAlpha,
+                            operation: wgpu::BlendOperation::Add,
+                        },
+                        alpha: wgpu::BlendComponent {
+                            src_factor: wgpu::BlendFactor::One,
+                            dst_factor: wgpu::BlendFactor::OneMinusSrcAlpha,
+                            operation: wgpu::BlendOperation::Add,
+                        },
+                    }),
+                    write_mask: wgpu::ColorWrites::ALL,
+                })],
+                compilation_options: Default::default(),
+            }),
+            primitive: wgpu::PrimitiveState::default(),
+            depth_stencil: None,
+            multisample: wgpu::MultisampleState::default(),
+            multiview: None,
+            cache: None,
+        });
+        let sampler = device.create_sampler(&wgpu::SamplerDescriptor {
+            label: Some("llimphi-overlay-sampler"),
+            ..Default::default()
+        });
+        OverlayCompositor {
+            pipeline,
+            sampler,
+            bind_layout,
+        }
+    }
+
+    /// Compone `source` (overlay con fondo transparente) sobre `target` (la
+    /// intermedia), preservando el contenido previo del target (LoadOp::Load)
+    /// y mezclando con alpha. Graba un render pass en `encoder`.
+    pub fn composite(
+        &self,
+        device: &wgpu::Device,
+        encoder: &mut wgpu::CommandEncoder,
+        target: &wgpu::TextureView,
+        source: &wgpu::TextureView,
+    ) {
+        let bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
+            label: Some("llimphi-overlay-bg"),
+            layout: &self.bind_layout,
+            entries: &[
+                wgpu::BindGroupEntry {
+                    binding: 0,
+                    resource: wgpu::BindingResource::TextureView(source),
+                },
+                wgpu::BindGroupEntry {
+                    binding: 1,
+                    resource: wgpu::BindingResource::Sampler(&self.sampler),
+                },
+            ],
+        });
+        let mut pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+            label: Some("llimphi-overlay-composite-pass"),
+            color_attachments: &[Some(wgpu::RenderPassColorAttachment {
+                view: target,
+                resolve_target: None,
+                ops: wgpu::Operations {
+                    load: wgpu::LoadOp::Load,
+                    store: wgpu::StoreOp::Store,
+                },
+            })],
+            depth_stencil_attachment: None,
+            timestamp_writes: None,
+            occlusion_query_set: None,
+        });
+        pass.set_pipeline(&self.pipeline);
+        pass.set_bind_group(0, &bind_group, &[]);
+        pass.draw(0..3, 0..1);
+    }
+}
+
+/// Pase de pantalla completa que samplea la textura de overlay y la emite
+/// para alpha-over. Triángulo grande que cubre el viewport; UV mapea clip
+/// → texel 1:1 (Y invertida, igual que un blit estándar).
+const OVERLAY_COMPOSITE_WGSL: &str = r#"
+struct VsOut {
+    @builtin(position) pos: vec4<f32>,
+    @location(0) uv: vec2<f32>,
+};
+
+@vertex
+fn vs(@builtin(vertex_index) vi: u32) -> VsOut {
+    var corners = array<vec2<f32>, 3>(
+        vec2<f32>(-1.0, -1.0),
+        vec2<f32>( 3.0, -1.0),
+        vec2<f32>(-1.0,  3.0),
+    );
+    let xy = corners[vi];
+    var out: VsOut;
+    out.pos = vec4<f32>(xy, 0.0, 1.0);
+    out.uv = vec2<f32>((xy.x + 1.0) * 0.5, (1.0 - xy.y) * 0.5);
+    return out;
+}
+
+@group(0) @binding(0) var src_tex: texture_2d<f32>;
+@group(0) @binding(1) var src_samp: sampler;
+
+@fragment
+fn fs(in: VsOut) -> @location(0) vec4<f32> {
+    return textureSample(src_tex, src_samp, in.uv);
+}
+"#;
+
+impl Surface for WinitSurface {
+    fn size(&self) -> (u32, u32) {
+        (self.config.width, self.config.height)
+    }
+
+    fn resize(&mut self, width: u32, height: u32) {
+        self.config.width = width.max(1);
+        self.config.height = height.max(1);
+        self.surface.configure(&self.device, &self.config);
+        let (tex, view) = create_intermediate(&self.device, self.config.width, self.config.height);
+        self.intermediate = tex;
+        self.intermediate_view = view;
+        let (otex, oview) =
+            create_intermediate(&self.device, self.config.width, self.config.height);
+        self.overlay = otex;
+        self.overlay_view = oview;
+    }
+
+    fn acquire(&mut self) -> Result<Frame, SurfaceError> {
+        let texture = self.surface.get_current_texture().map_err(|e| match e {
+            wgpu::SurfaceError::Lost => SurfaceError::Lost,
+            wgpu::SurfaceError::Outdated => SurfaceError::Outdated,
+            wgpu::SurfaceError::OutOfMemory => SurfaceError::OutOfMemory,
+            wgpu::SurfaceError::Timeout => SurfaceError::Timeout,
+            other => SurfaceError::Other(format!("{other:?}")),
+        })?;
+        let surface_view = texture
+            .texture
+            .create_view(&wgpu::TextureViewDescriptor::default());
+        // `TextureView` envuelve un Arc — clonar es atomic-incref, no
+        // recrea la vista. La intermedia sólo cambia en `resize`.
+        Ok(Frame {
+            surface_texture: texture,
+            surface_view,
+            intermediate_view: self.intermediate_view.clone(),
+            overlay_view: self.overlay_view.clone(),
+            width: self.config.width,
+            height: self.config.height,
+        })
+    }
+
+    fn present(&mut self, frame: Frame, hal: &Hal) {
+        let mut encoder = hal.device.create_command_encoder(&wgpu::CommandEncoderDescriptor {
+            label: Some("llimphi-blit"),
+        });
+        self.blitter.copy(
+            &hal.device,
+            &mut encoder,
+            &frame.intermediate_view,
+            &frame.surface_view,
+        );
+        hal.queue.submit(std::iter::once(encoder.finish()));
+        frame.surface_texture.present();
+    }
+}
diff --git a/llimphi-icons/Cargo.toml b/llimphi-icons/Cargo.toml
new file mode 100644
index 0000000..e731f53
--- /dev/null
+++ b/llimphi-icons/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "llimphi-icons"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-icons — set mínimo de iconos vectoriales (BezPath en grid 24×24) renderizables vía paint_with. Stroke-based, escalables. Cubre las acciones canónicas de cualquier UI gioser."
+
+[dependencies]
+llimphi-ui = { workspace = true }
diff --git a/llimphi-icons/examples/app_icons_gallery.rs b/llimphi-icons/examples/app_icons_gallery.rs
new file mode 100644
index 0000000..97652ca
--- /dev/null
+++ b/llimphi-icons/examples/app_icons_gallery.rs
@@ -0,0 +1,136 @@
+//! Galería de los iconos de marca de todas las apps de gioser.
+//!
+//! Pinta los 29 [`AppIcon`] en una grilla, cada uno en su color de marca
+//! con su nombre debajo. Sirve para eyeballear de un vistazo que el set
+//! es coherente (mismo peso de trazo, mismo aire) y que cada glifo es
+//! reconocible.
+//!
+//! `cargo run -p llimphi-icons --example app_icons_gallery --release`
+
+use llimphi_icons::app_icons::{app_icon_view, AppIcon, ALL};
+use llimphi_ui::llimphi_layout::taffy::prelude::{
+    auto, length, percent, AlignItems, FlexDirection, JustifyContent, Size, Style,
+};
+use llimphi_ui::llimphi_layout::taffy::Rect;
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{App, Handle, View};
+
+const COLS: usize = 6;
+const BG: Color = Color::from_rgb8(18, 20, 24);
+const CELL: Color = Color::from_rgb8(28, 31, 38);
+const LABEL: Color = Color::from_rgb8(196, 202, 212);
+
+struct Model;
+
+#[derive(Clone)]
+enum Msg {}
+
+fn cell(icon: AppIcon) -> View<Msg> {
+    // Recuadro del glifo (cuadrado, el icono se escala al lado menor).
+    let icon_box = View::new(Style {
+        size: Size {
+            width: length(52.0_f32),
+            height: length(52.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(vec![app_icon_view(icon, 2.0)]);
+
+    let label = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(16.0_f32),
+        },
+        ..Default::default()
+    })
+    .text_aligned(icon.name().to_string(), 11.0, LABEL, Alignment::Center);
+
+    View::new(Style {
+        size: Size {
+            width: length(118.0_f32),
+            height: length(96.0_f32),
+        },
+        flex_direction: FlexDirection::Column,
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        gap: Size {
+            width: length(0.0_f32),
+            height: length(8.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(CELL)
+    .radius(12.0)
+    .children(vec![icon_box, label])
+}
+
+fn row(icons: &[AppIcon]) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: auto(),
+            height: auto(),
+        },
+        flex_direction: FlexDirection::Row,
+        gap: Size {
+            width: length(14.0_f32),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(icons.iter().copied().map(cell).collect())
+}
+
+struct Gallery;
+
+impl App for Gallery {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi-icons · galería de apps"
+    }
+
+    fn initial_size() -> (u32, u32) {
+        (820, 620)
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        Model
+    }
+
+    fn update(_model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
+        match msg {}
+    }
+
+    fn view(_: &Model) -> View<Msg> {
+        let rows: Vec<View<Msg>> = ALL.chunks(COLS).map(row).collect();
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            flex_direction: FlexDirection::Column,
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(JustifyContent::Center),
+            gap: Size {
+                width: length(0.0_f32),
+                height: length(14.0_f32),
+            },
+            padding: Rect {
+                left: length(20.0_f32),
+                right: length(20.0_f32),
+                top: length(20.0_f32),
+                bottom: length(20.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(BG)
+        .children(rows)
+    }
+}
+
+fn main() {
+    llimphi_ui::run::<Gallery>();
+}
diff --git a/llimphi-icons/src/app_icons.rs b/llimphi-icons/src/app_icons.rs
new file mode 100644
index 0000000..cd97aa5
--- /dev/null
+++ b/llimphi-icons/src/app_icons.rs
@@ -0,0 +1,824 @@
+//! `app_icons` — iconos de marca, uno por dominio/app de gioser.
+//!
+//! A diferencia del set canónico de [`crate::Icon`] (glifos genéricos de
+//! acción: file, save, search…), acá vive **un glifo distintivo por app**.
+//! Cada app tiene su símbolo y su **color de marca** propios, pero todos
+//! comparten el mismo lenguaje visual:
+//!
+//! - **Mismo grid lógico 24×24**, origen top-left, eje Y hacia abajo.
+//! - **Stroke-based, sin fill**: trazos con `Join::Round` + `Cap::Round`.
+//! - **Geometría minimal**: reconocible al primer vistazo aún en 16×16.
+//! - **Aire de ~3 unidades** en los bordes para que respire dentro de un chip.
+//!
+//! La idea es que un dock/spotlight/menú pinte `app_icon_view(AppIcon::Pluma)`
+//! y obtenga el glifo de la pluma en su color de tinta, sin que la app tenga
+//! que cargar un PNG ni declarar su propia geometría.
+//!
+//! ```ignore
+//! use llimphi_icons::app_icons::{AppIcon, app_icon_view};
+//!
+//! // Resuelve desde el id del registro de apps:
+//! if let Some(icon) = AppIcon::from_app_id("cosmos") {
+//!     let chip = View::new(style).children(vec![app_icon_view(icon, 1.8)]);
+//! }
+//! ```
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{percent, Size, Style},
+    Position,
+};
+use llimphi_ui::llimphi_raster::kurbo::{Affine, BezPath, Cap, Join, Stroke};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::View;
+
+/// Una app de gioser con icono de marca. El identificador (`name`) coincide
+/// con el `id` del `AppEntry` en `app-bus`.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum AppIcon {
+    // --- 00_unanchay · PERCIBIR ---
+    Chaka,
+    Khipu,
+    Pineal,
+    Pluma,
+    Puriy,
+    Rimay,
+    // --- 01_yachay · CONOCER ---
+    Cosmos,
+    Dominium,
+    Iniy,
+    Nakui,
+    Tinkuy,
+    // --- 02_ruway · HACER ---
+    Ayni,
+    Cards,
+    Chasqui,
+    Llimphi,
+    Media,
+    Mirada,
+    Nada,
+    Nahual,
+    Shuma,
+    Supay,
+    Takiy,
+    Tullpu,
+    Wawa,
+    // --- 03_ukupacha · RAÍZ ---
+    Agora,
+    Arje,
+    Minga,
+    Sandokan,
+    WawaExplorer,
+}
+
+/// Las 29 apps, en orden de cuadrante. Útil para iterar (galerías, tests).
+pub const ALL: [AppIcon; 29] = [
+    AppIcon::Chaka,
+    AppIcon::Khipu,
+    AppIcon::Pineal,
+    AppIcon::Pluma,
+    AppIcon::Puriy,
+    AppIcon::Rimay,
+    AppIcon::Cosmos,
+    AppIcon::Dominium,
+    AppIcon::Iniy,
+    AppIcon::Nakui,
+    AppIcon::Tinkuy,
+    AppIcon::Ayni,
+    AppIcon::Cards,
+    AppIcon::Chasqui,
+    AppIcon::Llimphi,
+    AppIcon::Media,
+    AppIcon::Mirada,
+    AppIcon::Nada,
+    AppIcon::Nahual,
+    AppIcon::Shuma,
+    AppIcon::Supay,
+    AppIcon::Takiy,
+    AppIcon::Tullpu,
+    AppIcon::Wawa,
+    AppIcon::Agora,
+    AppIcon::Arje,
+    AppIcon::Minga,
+    AppIcon::Sandokan,
+    AppIcon::WawaExplorer,
+];
+
+impl AppIcon {
+    /// Id estable de la app (coincide con `AppEntry.id` / nombre del dominio).
+    pub const fn name(self) -> &'static str {
+        match self {
+            AppIcon::Chaka => "chaka",
+            AppIcon::Khipu => "khipu",
+            AppIcon::Pineal => "pineal",
+            AppIcon::Pluma => "pluma",
+            AppIcon::Puriy => "puriy",
+            AppIcon::Rimay => "rimay",
+            AppIcon::Cosmos => "cosmos",
+            AppIcon::Dominium => "dominium",
+            AppIcon::Iniy => "iniy",
+            AppIcon::Nakui => "nakui",
+            AppIcon::Tinkuy => "tinkuy",
+            AppIcon::Ayni => "ayni",
+            AppIcon::Cards => "cards",
+            AppIcon::Chasqui => "chasqui",
+            AppIcon::Llimphi => "llimphi",
+            AppIcon::Media => "media",
+            AppIcon::Mirada => "mirada",
+            AppIcon::Nada => "nada",
+            AppIcon::Nahual => "nahual",
+            AppIcon::Shuma => "shuma",
+            AppIcon::Supay => "supay",
+            AppIcon::Takiy => "takiy",
+            AppIcon::Tullpu => "tullpu",
+            AppIcon::Wawa => "wawa",
+            AppIcon::Agora => "agora",
+            AppIcon::Arje => "arje",
+            AppIcon::Minga => "minga",
+            AppIcon::Sandokan => "sandokan",
+            AppIcon::WawaExplorer => "wawa-explorer",
+        }
+    }
+
+    /// Resuelve una app desde su `id` del registro. Acepta tanto
+    /// `"wawa-explorer"` como `"wawa_explorer"`.
+    pub fn from_app_id(id: &str) -> Option<AppIcon> {
+        let id = id.trim().to_ascii_lowercase();
+        let id = id.replace('_', "-");
+        ALL.into_iter().find(|a| a.name() == id)
+    }
+
+    /// Color de marca de la app — el que el dock/menú debería usar para
+    /// pintar el glifo por default.
+    pub const fn brand(self) -> Color {
+        let (r, g, b) = match self {
+            AppIcon::Chaka => (43, 166, 164),
+            AppIcon::Khipu => (181, 101, 29),
+            AppIcon::Pineal => (108, 79, 216),
+            AppIcon::Pluma => (61, 59, 142),
+            AppIcon::Puriy => (63, 163, 77),
+            AppIcon::Rimay => (232, 131, 58),
+            AppIcon::Cosmos => (230, 184, 0),
+            AppIcon::Dominium => (74, 111, 165),
+            AppIcon::Iniy => (124, 179, 66),
+            AppIcon::Nakui => (194, 84, 157),
+            AppIcon::Tinkuy => (217, 83, 79),
+            AppIcon::Ayni => (42, 168, 196),
+            AppIcon::Cards => (142, 99, 206),
+            AppIcon::Chasqui => (52, 179, 106),
+            AppIcon::Llimphi => (229, 91, 122),
+            AppIcon::Media => (226, 62, 87),
+            AppIcon::Mirada => (45, 125, 210),
+            AppIcon::Nada => (136, 147, 160),
+            AppIcon::Nahual => (124, 77, 191),
+            AppIcon::Shuma => (224, 165, 38),
+            AppIcon::Supay => (155, 63, 181),
+            AppIcon::Takiy => (229, 99, 155),
+            AppIcon::Tullpu => (224, 96, 58),
+            AppIcon::Wawa => (91, 141, 239),
+            AppIcon::Agora => (47, 158, 143),
+            AppIcon::Arje => (176, 141, 87),
+            AppIcon::Minga => (224, 123, 57),
+            AppIcon::Sandokan => (192, 57, 43),
+            AppIcon::WawaExplorer => (110, 160, 240),
+        };
+        Color::from_rgb8(r, g, b)
+    }
+
+    /// `BezPath` del glifo en coords del grid 24×24.
+    pub fn path(self) -> BezPath {
+        match self {
+            AppIcon::Chaka => path_chaka(),
+            AppIcon::Khipu => path_khipu(),
+            AppIcon::Pineal => path_pineal(),
+            AppIcon::Pluma => path_pluma(),
+            AppIcon::Puriy => path_puriy(),
+            AppIcon::Rimay => path_rimay(),
+            AppIcon::Cosmos => path_cosmos(),
+            AppIcon::Dominium => path_dominium(),
+            AppIcon::Iniy => path_iniy(),
+            AppIcon::Nakui => path_nakui(),
+            AppIcon::Tinkuy => path_tinkuy(),
+            AppIcon::Ayni => path_ayni(),
+            AppIcon::Cards => path_cards(),
+            AppIcon::Chasqui => path_chasqui(),
+            AppIcon::Llimphi => path_llimphi(),
+            AppIcon::Media => path_media(),
+            AppIcon::Mirada => path_mirada(),
+            AppIcon::Nada => path_nada(),
+            AppIcon::Nahual => path_nahual(),
+            AppIcon::Shuma => path_shuma(),
+            AppIcon::Supay => path_supay(),
+            AppIcon::Takiy => path_takiy(),
+            AppIcon::Tullpu => path_tullpu(),
+            AppIcon::Wawa => path_wawa(),
+            AppIcon::Agora => path_agora(),
+            AppIcon::Arje => path_arje(),
+            AppIcon::Minga => path_minga(),
+            AppIcon::Sandokan => path_sandokan(),
+            AppIcon::WawaExplorer => path_wawa_explorer(),
+        }
+    }
+}
+
+/// `View` que pinta el icono de app en su **color de marca**, ocupando todo
+/// el rect del padre, escalado uniforme y centrado.
+///
+/// - `stroke_width` en unidades del grid 24×24 (típico de marca: `1.8`).
+pub fn app_icon_view<Msg: Clone + 'static>(icon: AppIcon, stroke_width: f32) -> View<Msg> {
+    app_icon_view_colored(icon, icon.brand(), stroke_width)
+}
+
+/// Igual que [`app_icon_view`] pero forzando un color (p.ej. monocromo
+/// `theme.fg_text` para un menú denso donde el color distrae).
+pub fn app_icon_view_colored<Msg: Clone + 'static>(
+    icon: AppIcon,
+    color: Color,
+    stroke_width: f32,
+) -> View<Msg> {
+    View::new(Style {
+        position: Position::Absolute,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .paint_with(move |scene, _ts, rect| {
+        paint_app_icon(scene, rect, icon, color, stroke_width);
+    })
+}
+
+/// Pintor crudo — para stampear varios iconos de app dentro del mismo
+/// `paint_with` (una grilla de launcher, por ejemplo).
+pub fn paint_app_icon(
+    scene: &mut llimphi_ui::llimphi_raster::vello::Scene,
+    rect: llimphi_ui::PaintRect,
+    icon: AppIcon,
+    color: Color,
+    stroke_width: f32,
+) {
+    let side = rect.w.min(rect.h) as f64;
+    if side <= 0.0 {
+        return;
+    }
+    let scale = side / 24.0;
+    let tx = rect.x as f64 + (rect.w as f64 - side) * 0.5;
+    let ty = rect.y as f64 + (rect.h as f64 - side) * 0.5;
+    let xform = Affine::translate((tx, ty)) * Affine::scale(scale);
+
+    let stroke = Stroke::new(stroke_width as f64)
+        .with_join(Join::Round)
+        .with_caps(Cap::Round);
+    let path = icon.path();
+    scene.stroke(&stroke, xform, color, None, &path);
+}
+
+// =====================================================================
+// Helpers
+// =====================================================================
+
+/// Círculo aproximado con `segments` lados rectos (liso por el Cap::Round).
+fn circle(cx: f64, cy: f64, r: f64, segments: usize) -> BezPath {
+    let mut p = BezPath::new();
+    for i in 0..=segments {
+        let theta = std::f64::consts::TAU * (i as f64) / (segments as f64);
+        let x = cx + r * theta.cos();
+        let y = cy + r * theta.sin();
+        if i == 0 {
+            p.move_to((x, y));
+        } else {
+            p.line_to((x, y));
+        }
+    }
+    p
+}
+
+/// Empuja todos los elementos de `src` dentro de `dst` (para componer
+/// glifos hechos de varias subformas).
+fn push_all(dst: &mut BezPath, src: BezPath) {
+    for el in src.elements() {
+        dst.push(*el);
+    }
+}
+
+// =====================================================================
+// Glifos — uno por app. Grid 24×24, margen ~3.
+// =====================================================================
+
+// --- 00_unanchay · PERCIBIR ---
+
+fn path_chaka() -> BezPath {
+    // chaka = puente: tablero recto + arco + dos pilotes.
+    let mut p = BezPath::new();
+    // Tablero.
+    p.move_to((3.0, 9.0));
+    p.line_to((21.0, 9.0));
+    // Arco bajo el tablero.
+    p.move_to((5.0, 18.0));
+    p.curve_to((5.0, 11.0), (19.0, 11.0), (19.0, 18.0));
+    // Pilotes que conectan tablero y arco.
+    p.move_to((9.0, 9.0));
+    p.line_to((9.0, 12.5));
+    p.move_to((15.0, 9.0));
+    p.line_to((15.0, 12.5));
+    p
+}
+
+fn path_khipu() -> BezPath {
+    // khipu: cordón principal + tres ramales con nudos (puntos).
+    let mut p = BezPath::new();
+    // Cordón superior.
+    p.move_to((4.0, 6.0));
+    p.line_to((20.0, 6.0));
+    // Ramales.
+    p.move_to((7.0, 6.0));
+    p.line_to((7.0, 19.0));
+    p.move_to((12.0, 6.0));
+    p.line_to((12.0, 20.0));
+    p.move_to((17.0, 6.0));
+    p.line_to((17.0, 18.0));
+    // Nudos.
+    push_all(&mut p, circle(7.0, 12.0, 1.3, 10));
+    push_all(&mut p, circle(12.0, 10.0, 1.3, 10));
+    push_all(&mut p, circle(12.0, 16.0, 1.3, 10));
+    push_all(&mut p, circle(17.0, 11.0, 1.3, 10));
+    p
+}
+
+fn path_pineal() -> BezPath {
+    // pineal = tercer ojo: párpado almendrado + iris + antena/rayo arriba.
+    let mut p = BezPath::new();
+    p.move_to((4.0, 12.0));
+    p.curve_to((8.0, 7.0), (16.0, 7.0), (20.0, 12.0));
+    p.curve_to((16.0, 17.0), (8.0, 17.0), (4.0, 12.0));
+    push_all(&mut p, circle(12.0, 12.0, 2.6, 14));
+    p.move_to((12.0, 3.0));
+    p.line_to((12.0, 5.5));
+    p
+}
+
+fn path_pluma() -> BezPath {
+    // pluma = plumín: rombo apuntando abajo + ranura + ojal.
+    let mut p = BezPath::new();
+    p.move_to((12.0, 3.0));
+    p.line_to((16.0, 9.0));
+    p.line_to((13.5, 20.0));
+    p.line_to((10.5, 20.0));
+    p.line_to((8.0, 9.0));
+    p.close_path();
+    // Ranura.
+    p.move_to((12.0, 11.5));
+    p.line_to((12.0, 19.0));
+    // Ojal.
+    push_all(&mut p, circle(12.0, 9.5, 1.2, 10));
+    p
+}
+
+fn path_puriy() -> BezPath {
+    // puriy = caminar/recorrido: senda curva ascendente con flecha.
+    let mut p = BezPath::new();
+    p.move_to((6.0, 20.0));
+    p.curve_to((6.0, 12.0), (18.0, 12.0), (18.0, 4.0));
+    // Cabeza de flecha.
+    p.move_to((15.0, 6.0));
+    p.line_to((18.0, 4.0));
+    p.line_to((20.5, 6.5));
+    p
+}
+
+fn path_rimay() -> BezPath {
+    // rimay = palabra/habla: globo de diálogo con cola + dos renglones.
+    let mut p = BezPath::new();
+    p.move_to((4.0, 6.0));
+    p.line_to((20.0, 6.0));
+    p.line_to((20.0, 15.0));
+    p.line_to((11.0, 15.0));
+    p.line_to((8.0, 19.0));
+    p.line_to((8.0, 15.0));
+    p.line_to((4.0, 15.0));
+    p.close_path();
+    // Renglones.
+    p.move_to((8.0, 9.5));
+    p.line_to((16.0, 9.5));
+    p.move_to((8.0, 12.0));
+    p.line_to((13.0, 12.0));
+    p
+}
+
+// --- 01_yachay · CONOCER ---
+
+fn path_cosmos() -> BezPath {
+    // cosmos = destello de 4 puntas + dos estrellas pequeñas.
+    let mut p = BezPath::new();
+    p.move_to((12.0, 4.0));
+    p.line_to((13.4, 10.6));
+    p.line_to((20.0, 12.0));
+    p.line_to((13.4, 13.4));
+    p.line_to((12.0, 20.0));
+    p.line_to((10.6, 13.4));
+    p.line_to((4.0, 12.0));
+    p.line_to((10.6, 10.6));
+    p.close_path();
+    // Estrellas chicas.
+    push_all(&mut p, circle(19.0, 6.0, 0.8, 8));
+    push_all(&mut p, circle(5.5, 18.0, 0.8, 8));
+    p
+}
+
+fn path_dominium() -> BezPath {
+    // dominium = ERP/libro mayor: barras de distinta altura sobre una base.
+    let mut p = BezPath::new();
+    // Base.
+    p.move_to((3.0, 20.0));
+    p.line_to((21.0, 20.0));
+    // Columnas.
+    p.move_to((6.0, 14.0));
+    p.line_to((9.0, 14.0));
+    p.line_to((9.0, 20.0));
+    p.line_to((6.0, 20.0));
+    p.close_path();
+    p.move_to((10.5, 8.0));
+    p.line_to((13.5, 8.0));
+    p.line_to((13.5, 20.0));
+    p.line_to((10.5, 20.0));
+    p.close_path();
+    p.move_to((15.0, 11.0));
+    p.line_to((18.0, 11.0));
+    p.line_to((18.0, 20.0));
+    p.line_to((15.0, 20.0));
+    p.close_path();
+    p
+}
+
+fn path_iniy() -> BezPath {
+    // iniy = aliento/creer: brote con tallo y dos hojas.
+    let mut p = BezPath::new();
+    // Tallo.
+    p.move_to((12.0, 20.0));
+    p.line_to((12.0, 10.0));
+    // Hoja izquierda.
+    p.move_to((12.0, 14.0));
+    p.curve_to((8.0, 14.0), (6.0, 11.0), (7.0, 8.0));
+    p.curve_to((10.0, 9.0), (12.0, 11.0), (12.0, 14.0));
+    // Hoja derecha.
+    p.move_to((12.0, 12.0));
+    p.curve_to((15.5, 12.0), (17.0, 9.0), (16.5, 6.0));
+    p.curve_to((14.0, 7.0), (12.0, 9.0), (12.0, 12.0));
+    p
+}
+
+fn path_nakui() -> BezPath {
+    // nakui = grafo de morfismos: tres nodos + aristas.
+    let mut p = BezPath::new();
+    // Aristas (primero, para que queden bajo los nodos).
+    p.move_to((7.5, 9.0));
+    p.line_to((16.5, 9.0));
+    p.move_to((7.5, 9.8));
+    p.line_to((10.8, 16.0));
+    p.move_to((16.5, 9.8));
+    p.line_to((13.2, 16.0));
+    // Nodos.
+    push_all(&mut p, circle(6.0, 8.0, 2.2, 14));
+    push_all(&mut p, circle(18.0, 8.0, 2.2, 14));
+    push_all(&mut p, circle(12.0, 18.0, 2.2, 14));
+    p
+}
+
+fn path_tinkuy() -> BezPath {
+    // tinkuy = encuentro/choque: dos flechas que convergen + chispa.
+    let mut p = BezPath::new();
+    // Flecha izquierda →
+    p.move_to((3.0, 12.0));
+    p.line_to((9.5, 12.0));
+    p.move_to((7.5, 10.0));
+    p.line_to((9.5, 12.0));
+    p.line_to((7.5, 14.0));
+    // Flecha derecha ←
+    p.move_to((21.0, 12.0));
+    p.line_to((14.5, 12.0));
+    p.move_to((16.5, 10.0));
+    p.line_to((14.5, 12.0));
+    p.line_to((16.5, 14.0));
+    // Chispa central.
+    push_all(&mut p, circle(12.0, 12.0, 1.6, 10));
+    p
+}
+
+// --- 02_ruway · HACER ---
+
+fn path_ayni() -> BezPath {
+    // ayni = reciprocidad: dos flechas curvas en ciclo.
+    let mut p = BezPath::new();
+    // Arco superior, flecha hacia la derecha-abajo.
+    p.move_to((6.0, 8.0));
+    p.curve_to((9.0, 4.0), (15.0, 4.0), (18.0, 8.5));
+    p.move_to((15.5, 8.0));
+    p.line_to((18.0, 8.5));
+    p.line_to((18.5, 5.8));
+    // Arco inferior, flecha hacia la izquierda-arriba.
+    p.move_to((18.0, 16.0));
+    p.curve_to((15.0, 20.0), (9.0, 20.0), (6.0, 15.5));
+    p.move_to((8.5, 16.0));
+    p.line_to((6.0, 15.5));
+    p.line_to((5.5, 18.2));
+    p
+}
+
+fn path_cards() -> BezPath {
+    // cards = naipes apilados: carta frontal + borde de la de atrás.
+    let mut p = BezPath::new();
+    // Carta de atrás (asoma arriba y a la derecha).
+    p.move_to((8.0, 5.0));
+    p.line_to((19.0, 5.0));
+    p.line_to((19.0, 16.0));
+    // Carta frontal.
+    p.move_to((5.0, 9.0));
+    p.line_to((15.0, 9.0));
+    p.line_to((15.0, 20.0));
+    p.line_to((5.0, 20.0));
+    p.close_path();
+    p
+}
+
+fn path_chasqui() -> BezPath {
+    // chasqui = mensajero: avión de papel.
+    let mut p = BezPath::new();
+    p.move_to((4.0, 11.0));
+    p.line_to((20.0, 4.0));
+    p.line_to((13.0, 20.0));
+    p.line_to((11.0, 13.0));
+    p.close_path();
+    // Pliegue central.
+    p.move_to((11.0, 13.0));
+    p.line_to((20.0, 4.0));
+    p
+}
+
+fn path_llimphi() -> BezPath {
+    // llimphi = pintura/color: paleta con apoyo para el pulgar + 3 gotas.
+    let mut p = BezPath::new();
+    p.move_to((4.0, 12.0));
+    p.curve_to((4.0, 6.0), (11.0, 4.0), (15.0, 5.0));
+    p.curve_to((20.0, 6.5), (21.0, 12.0), (18.0, 15.0));
+    p.curve_to((16.0, 16.5), (16.5, 13.5), (14.0, 14.0));
+    p.curve_to((11.5, 14.5), (12.5, 18.0), (9.0, 18.0));
+    p.curve_to((5.5, 18.0), (4.0, 15.0), (4.0, 12.0));
+    p.close_path();
+    // Gotas de pintura.
+    push_all(&mut p, circle(8.0, 9.0, 1.1, 10));
+    push_all(&mut p, circle(12.0, 8.0, 1.1, 10));
+    push_all(&mut p, circle(15.5, 10.0, 1.1, 10));
+    p
+}
+
+fn path_media() -> BezPath {
+    // media = reproducción: marco + triángulo de play.
+    let mut p = BezPath::new();
+    p.move_to((4.0, 6.0));
+    p.line_to((20.0, 6.0));
+    p.line_to((20.0, 18.0));
+    p.line_to((4.0, 18.0));
+    p.close_path();
+    // Play.
+    p.move_to((10.0, 9.0));
+    p.line_to((10.0, 15.0));
+    p.line_to((16.0, 12.0));
+    p.close_path();
+    p
+}
+
+fn path_mirada() -> BezPath {
+    // mirada = ojo: párpado + iris + pupila.
+    let mut p = BezPath::new();
+    p.move_to((3.0, 12.0));
+    p.curve_to((8.0, 6.0), (16.0, 6.0), (21.0, 12.0));
+    p.curve_to((16.0, 18.0), (8.0, 18.0), (3.0, 12.0));
+    p.close_path();
+    push_all(&mut p, circle(12.0, 12.0, 3.4, 18));
+    push_all(&mut p, circle(12.0, 12.0, 1.0, 8));
+    p
+}
+
+fn path_nada() -> BezPath {
+    // nada = vacío: conjunto vacío ∅ (anillo + diagonal).
+    let mut p = circle(12.0, 12.0, 8.0, 28);
+    p.move_to((6.5, 17.5));
+    p.line_to((17.5, 6.5));
+    p
+}
+
+fn path_nahual() -> BezPath {
+    // nahual = máscara/mutación de forma: antifaz con dos ojos.
+    let mut p = BezPath::new();
+    p.move_to((4.0, 9.0));
+    p.curve_to((4.0, 6.5), (8.0, 6.0), (10.0, 7.5));
+    p.curve_to((11.0, 8.2), (13.0, 8.2), (14.0, 7.5));
+    p.curve_to((16.0, 6.0), (20.0, 6.5), (20.0, 9.0));
+    p.curve_to((20.0, 13.5), (16.0, 16.5), (12.0, 15.5));
+    p.curve_to((8.0, 16.5), (4.0, 13.5), (4.0, 9.0));
+    p.close_path();
+    push_all(&mut p, circle(9.0, 10.0, 1.3, 10));
+    push_all(&mut p, circle(15.0, 10.0, 1.3, 10));
+    p
+}
+
+fn path_shuma() -> BezPath {
+    // shuma = discernir: embudo/filtro.
+    let mut p = BezPath::new();
+    p.move_to((4.0, 6.0));
+    p.line_to((20.0, 6.0));
+    p.line_to((13.0, 14.0));
+    p.line_to((13.0, 19.0));
+    p.line_to((11.0, 20.0));
+    p.line_to((11.0, 14.0));
+    p.close_path();
+    p
+}
+
+fn path_supay() -> BezPath {
+    // supay = espíritu del ukhupacha: llama doble.
+    let mut p = BezPath::new();
+    // Llama exterior.
+    p.move_to((12.0, 3.0));
+    p.curve_to((17.0, 9.0), (16.0, 14.0), (12.0, 21.0));
+    p.curve_to((8.0, 14.0), (7.0, 9.0), (12.0, 3.0));
+    p.close_path();
+    // Llama interior.
+    p.move_to((12.0, 9.0));
+    p.curve_to((14.0, 12.0), (13.0, 16.0), (12.0, 18.0));
+    p.curve_to((11.0, 16.0), (10.0, 12.0), (12.0, 9.0));
+    p.close_path();
+    p
+}
+
+fn path_takiy() -> BezPath {
+    // takiy = cantar: corchea + ondas de sonido.
+    let mut p = BezPath::new();
+    // Cabeza de nota.
+    push_all(&mut p, circle(8.0, 18.0, 2.4, 16));
+    // Plica.
+    p.move_to((10.4, 18.0));
+    p.line_to((10.4, 6.0));
+    // Banderola.
+    p.move_to((10.4, 6.0));
+    p.curve_to((13.5, 7.0), (14.5, 9.0), (13.5, 11.0));
+    // Ondas.
+    p.move_to((16.0, 9.0));
+    p.curve_to((18.0, 11.0), (18.0, 13.0), (16.0, 15.0));
+    p
+}
+
+fn path_tullpu() -> BezPath {
+    // tullpu = tinte/color: tres gotas.
+    let mut p = BezPath::new();
+    // Gota 1.
+    p.move_to((8.0, 5.0));
+    p.curve_to((11.0, 9.0), (11.0, 11.0), (8.0, 12.0));
+    p.curve_to((5.0, 11.0), (5.0, 9.0), (8.0, 5.0));
+    p.close_path();
+    // Gota 2.
+    p.move_to((16.0, 6.0));
+    p.curve_to((19.0, 10.0), (19.0, 12.0), (16.0, 13.0));
+    p.curve_to((13.0, 12.0), (13.0, 10.0), (16.0, 6.0));
+    p.close_path();
+    // Gota 3.
+    p.move_to((12.0, 13.0));
+    p.curve_to((15.0, 17.0), (15.0, 19.0), (12.0, 20.0));
+    p.curve_to((9.0, 19.0), (9.0, 17.0), (12.0, 13.0));
+    p.close_path();
+    p
+}
+
+fn path_wawa() -> BezPath {
+    // wawa = célula/semilla (el SO en gestación): membrana + núcleo.
+    let mut p = circle(12.0, 12.0, 8.0, 28);
+    push_all(&mut p, circle(12.0, 12.0, 3.0, 16));
+    p
+}
+
+// --- 03_ukupacha · RAÍZ ---
+
+fn path_agora() -> BezPath {
+    // agora = firma/confianza: escudo con check.
+    let mut p = BezPath::new();
+    p.move_to((12.0, 3.0));
+    p.line_to((20.0, 6.0));
+    p.line_to((20.0, 12.0));
+    p.curve_to((20.0, 17.0), (16.0, 20.0), (12.0, 21.0));
+    p.curve_to((8.0, 20.0), (4.0, 17.0), (4.0, 12.0));
+    p.line_to((4.0, 6.0));
+    p.close_path();
+    // Check.
+    p.move_to((8.5, 12.0));
+    p.line_to((11.0, 14.5));
+    p.line_to((16.0, 8.5));
+    p
+}
+
+fn path_arje() -> BezPath {
+    // arje = arché/raíz de confianza: ancla.
+    let mut p = BezPath::new();
+    // Anillo.
+    push_all(&mut p, circle(12.0, 5.0, 2.2, 14));
+    // Caña.
+    p.move_to((12.0, 7.2));
+    p.line_to((12.0, 19.0));
+    // Travesaño.
+    p.move_to((8.0, 10.0));
+    p.line_to((16.0, 10.0));
+    // Uñas/brazos.
+    p.move_to((6.0, 14.0));
+    p.curve_to((6.0, 18.5), (9.0, 20.0), (12.0, 20.0));
+    p.move_to((18.0, 14.0));
+    p.curve_to((18.0, 18.5), (15.0, 20.0), (12.0, 20.0));
+    p
+}
+
+fn path_minga() -> BezPath {
+    // minga = trabajo comunal: tres figuras.
+    let mut p = BezPath::new();
+    // Figura central.
+    push_all(&mut p, circle(12.0, 7.0, 2.2, 14));
+    p.move_to((8.0, 18.0));
+    p.curve_to((8.0, 13.0), (16.0, 13.0), (16.0, 18.0));
+    // Figura izquierda.
+    push_all(&mut p, circle(5.5, 10.0, 1.6, 12));
+    p.move_to((2.5, 18.0));
+    p.curve_to((2.5, 14.5), (6.0, 13.5), (7.5, 15.0));
+    // Figura derecha.
+    push_all(&mut p, circle(18.5, 10.0, 1.6, 12));
+    p.move_to((21.5, 18.0));
+    p.curve_to((21.5, 14.5), (18.0, 13.5), (16.5, 15.0));
+    p
+}
+
+fn path_sandokan() -> BezPath {
+    // sandokan = caja/contenedor aislado: cubo isométrico.
+    let mut p = BezPath::new();
+    // Cara frontal.
+    p.move_to((5.0, 8.0));
+    p.line_to((14.0, 8.0));
+    p.line_to((14.0, 18.0));
+    p.line_to((5.0, 18.0));
+    p.close_path();
+    // Tapa.
+    p.move_to((5.0, 8.0));
+    p.line_to((9.0, 4.0));
+    p.line_to((18.0, 4.0));
+    p.line_to((14.0, 8.0));
+    // Cara lateral.
+    p.move_to((14.0, 8.0));
+    p.line_to((18.0, 4.0));
+    p.line_to((18.0, 14.0));
+    p.line_to((14.0, 18.0));
+    p
+}
+
+fn path_wawa_explorer() -> BezPath {
+    // wawa-explorer = launchpad: grilla 2×2.
+    let mut p = BezPath::new();
+    for (x, y) in &[(5.0, 5.0), (13.0, 5.0), (5.0, 13.0), (13.0, 13.0)] {
+        p.move_to((*x, *y));
+        p.line_to((*x + 6.0, *y));
+        p.line_to((*x + 6.0, *y + 6.0));
+        p.line_to((*x, *y + 6.0));
+        p.close_path();
+    }
+    p
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn all_app_icons_have_nonempty_path() {
+        for icon in ALL {
+            let p = icon.path();
+            assert!(
+                p.elements().len() > 0,
+                "icono de app {} produjo path vacío",
+                icon.name()
+            );
+        }
+    }
+
+    #[test]
+    fn app_names_are_unique() {
+        let mut names: Vec<&str> = ALL.iter().map(|i| i.name()).collect();
+        let n = names.len();
+        names.sort();
+        names.dedup();
+        assert_eq!(names.len(), n, "nombres duplicados en AppIcon::name()");
+    }
+
+    #[test]
+    fn from_app_id_roundtrips() {
+        for icon in ALL {
+            assert_eq!(AppIcon::from_app_id(icon.name()), Some(icon));
+        }
+        // Tolera underscores y mayúsculas.
+        assert_eq!(AppIcon::from_app_id("WAWA_EXPLORER"), Some(AppIcon::WawaExplorer));
+        assert_eq!(AppIcon::from_app_id("desconocida"), None);
+    }
+}
diff --git a/llimphi-icons/src/lib.rs b/llimphi-icons/src/lib.rs
new file mode 100644
index 0000000..e237da9
--- /dev/null
+++ b/llimphi-icons/src/lib.rs
@@ -0,0 +1,1005 @@
+//! `llimphi-icons` — set canónico de iconos vectoriales para apps gioser.
+//!
+//! Cada icono es una función pura que devuelve un `BezPath` definido en
+//! un grid lógico de **24×24 unidades**. El renderer escala al rect que
+//! reciba, así un mismo icono sirve para 12px (en una fila de lista) y
+//! para 64px (en una hero card) sin pérdida de nitidez — es vector,
+//! no bitmap.
+//!
+//! ## Diseño
+//!
+//! - **Stroke-based, no fill**: los iconos son trazos de ancho 2 (en
+//!   unidades del grid) con joins/caps suaves. El stroke se renderiza
+//!   con el color que la app elija (típicamente `theme.fg_text` o
+//!   `theme.accent`).
+//! - **Geometría minimal, no marca**: glifos genéricos universales,
+//!   no "marca registrada". Cada uno debe ser reconocible al primer
+//!   vistazo aún en 12×12.
+//! - **Set acotado**: suficientes para cubrir el grueso de acciones y
+//!   tipos que aparecen en cualquier UI gioser. Si una app necesita uno
+//!   más, lo agrega aquí (no en su propio crate) — la consistencia
+//!   visual importa más que el aislamiento.
+//!
+//! ## Catálogo
+//!
+//! | Categoría    | Iconos                                              |
+//! |--------------|-----------------------------------------------------|
+//! | Documento    | `file`, `folder`, `folder_open`, `save`, `open`     |
+//! | Edición      | `plus`, `minus`, `x`, `check`, `edit`, `trash`      |
+//! | Navegación   | `chevron_up`, `chevron_down`, `chevron_left`, `chevron_right`, `home`, `search` |
+//! | Estado       | `info`, `warning`, `error`, `bell`                  |
+//! | Sistema      | `settings`, `more`                                  |
+//! | Multimedia   | `play`, `pause`, `stop`, `skip_*`, `volume*`, `repeat`, `shuffle`, `record`, `equalizer`, `camera`, `gauge` |
+//! | Archivos     | `image`, `music`, `film`, `archive`, `code`, `file_text`, `link`, `font` |
+//!
+//! ## Uso
+//!
+//! ```ignore
+//! use llimphi_icons::{Icon, icon_view};
+//!
+//! // Botón con icono "save":
+//! let btn = View::new(style)
+//!     .fill(palette.bg_button)
+//!     .children(vec![icon_view(Icon::Save, palette.fg_text, 1.6)]);
+//! ```
+//!
+//! El parámetro `stroke_width` (3er arg de `icon_view`) está en unidades
+//! del grid (24×24). `1.6` es el default armonioso; `2.0` para énfasis;
+//! `1.2` para iconos en tipografías pequeñas.
+
+#![forbid(unsafe_code)]
+
+pub mod app_icons;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{percent, Size, Style},
+    Position,
+};
+use llimphi_ui::llimphi_raster::kurbo::{Affine, BezPath, Cap, Join, Stroke};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::View;
+
+/// Catálogo de iconos del set canónico.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Icon {
+    // --- Documento ---
+    File,
+    Folder,
+    FolderOpen,
+    Save,
+    Open,
+    // --- Edición ---
+    Plus,
+    Minus,
+    X,
+    Check,
+    Edit,
+    Trash,
+    // --- Navegación ---
+    ChevronUp,
+    ChevronDown,
+    ChevronLeft,
+    ChevronRight,
+    Home,
+    Search,
+    // --- Estado ---
+    Info,
+    Warning,
+    Error,
+    Bell,
+    // --- Sistema ---
+    Settings,
+    More,
+    // --- Multimedia ---
+    Play,
+    Pause,
+    Stop,
+    SkipBack,
+    SkipForward,
+    Rewind,
+    FastForward,
+    Volume,
+    VolumeMute,
+    Repeat,
+    Shuffle,
+    Record,
+    Equalizer,
+    Camera,
+    Gauge,
+    // --- Archivos (tipos por extensión, para listados de file manager) ---
+    Image,
+    Music,
+    Film,
+    Archive,
+    Code,
+    FileText,
+    Link,
+    Font,
+}
+
+impl Icon {
+    /// Identificador estable en lowercase con underscores. Útil para
+    /// debugging, persistir choices del usuario, o mapear desde strings
+    /// en config.
+    pub const fn name(self) -> &'static str {
+        match self {
+            Icon::File => "file",
+            Icon::Folder => "folder",
+            Icon::FolderOpen => "folder_open",
+            Icon::Save => "save",
+            Icon::Open => "open",
+            Icon::Plus => "plus",
+            Icon::Minus => "minus",
+            Icon::X => "x",
+            Icon::Check => "check",
+            Icon::Edit => "edit",
+            Icon::Trash => "trash",
+            Icon::ChevronUp => "chevron_up",
+            Icon::ChevronDown => "chevron_down",
+            Icon::ChevronLeft => "chevron_left",
+            Icon::ChevronRight => "chevron_right",
+            Icon::Home => "home",
+            Icon::Search => "search",
+            Icon::Info => "info",
+            Icon::Warning => "warning",
+            Icon::Error => "error",
+            Icon::Bell => "bell",
+            Icon::Settings => "settings",
+            Icon::More => "more",
+            Icon::Play => "play",
+            Icon::Pause => "pause",
+            Icon::Stop => "stop",
+            Icon::SkipBack => "skip_back",
+            Icon::SkipForward => "skip_forward",
+            Icon::Rewind => "rewind",
+            Icon::FastForward => "fast_forward",
+            Icon::Volume => "volume",
+            Icon::VolumeMute => "volume_mute",
+            Icon::Repeat => "repeat",
+            Icon::Shuffle => "shuffle",
+            Icon::Record => "record",
+            Icon::Equalizer => "equalizer",
+            Icon::Camera => "camera",
+            Icon::Gauge => "gauge",
+            Icon::Image => "image",
+            Icon::Music => "music",
+            Icon::Film => "film",
+            Icon::Archive => "archive",
+            Icon::Code => "code",
+            Icon::FileText => "file_text",
+            Icon::Link => "link",
+            Icon::Font => "font",
+        }
+    }
+
+    /// Devuelve el `BezPath` del icono en coords del grid 24×24. La
+    /// app raramente lo necesita directamente — es lo que consume
+    /// internamente [`icon_view`] / [`paint_icon`].
+    pub fn path(self) -> BezPath {
+        match self {
+            Icon::File => path_file(),
+            Icon::Folder => path_folder(),
+            Icon::FolderOpen => path_folder_open(),
+            Icon::Save => path_save(),
+            Icon::Open => path_open(),
+            Icon::Plus => path_plus(),
+            Icon::Minus => path_minus(),
+            Icon::X => path_x(),
+            Icon::Check => path_check(),
+            Icon::Edit => path_edit(),
+            Icon::Trash => path_trash(),
+            Icon::ChevronUp => path_chevron(0.0),
+            Icon::ChevronDown => path_chevron(180.0),
+            Icon::ChevronLeft => path_chevron(270.0),
+            Icon::ChevronRight => path_chevron(90.0),
+            Icon::Home => path_home(),
+            Icon::Search => path_search(),
+            Icon::Info => path_info(),
+            Icon::Warning => path_warning(),
+            Icon::Error => path_error(),
+            Icon::Bell => path_bell(),
+            Icon::Settings => path_settings(),
+            Icon::More => path_more(),
+            Icon::Play => path_play(),
+            Icon::Pause => path_pause(),
+            Icon::Stop => path_stop(),
+            Icon::SkipBack => path_skip(true),
+            Icon::SkipForward => path_skip(false),
+            Icon::Rewind => path_seek(true),
+            Icon::FastForward => path_seek(false),
+            Icon::Volume => path_volume(false),
+            Icon::VolumeMute => path_volume(true),
+            Icon::Repeat => path_repeat(),
+            Icon::Shuffle => path_shuffle(),
+            Icon::Record => path_record(),
+            Icon::Equalizer => path_equalizer(),
+            Icon::Camera => path_camera(),
+            Icon::Gauge => path_gauge(),
+            Icon::Image => path_image(),
+            Icon::Music => path_music(),
+            Icon::Film => path_film(),
+            Icon::Archive => path_archive(),
+            Icon::Code => path_code(),
+            Icon::FileText => path_file_text(),
+            Icon::Link => path_link(),
+            Icon::Font => path_font(),
+        }
+    }
+}
+
+/// Construye un `View` que pinta el icono ocupando todo el rect del
+/// padre. El icono se escala uniformemente al mínimo lado y se centra.
+///
+/// - `stroke_width` en unidades del grid 24×24 (típico: `1.6`).
+pub fn icon_view<Msg: Clone + 'static>(
+    icon: Icon,
+    color: Color,
+    stroke_width: f32,
+) -> View<Msg> {
+    View::new(Style {
+        position: Position::Absolute,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .paint_with(move |scene, _ts, rect| {
+        paint_icon(scene, rect, icon, color, stroke_width);
+    })
+}
+
+/// Pintor crudo — útil cuando una app quiere stampear varios iconos
+/// dentro del mismo `paint_with` (paneles compuestos, toolbars
+/// generadas dinámicamente).
+pub fn paint_icon(
+    scene: &mut llimphi_ui::llimphi_raster::vello::Scene,
+    rect: llimphi_ui::PaintRect,
+    icon: Icon,
+    color: Color,
+    stroke_width: f32,
+) {
+    let side = rect.w.min(rect.h) as f64;
+    if side <= 0.0 {
+        return;
+    }
+    let scale = side / 24.0;
+    let tx = rect.x as f64 + (rect.w as f64 - side) * 0.5;
+    let ty = rect.y as f64 + (rect.h as f64 - side) * 0.5;
+    let xform = Affine::translate((tx, ty)) * Affine::scale(scale);
+
+    let stroke = Stroke::new(stroke_width as f64)
+        .with_join(Join::Round)
+        .with_caps(Cap::Round);
+    let path = icon.path();
+    scene.stroke(&stroke, xform, color, None, &path);
+}
+
+// =====================================================================
+// Paths — todos en grid 24×24, origen top-left, eje Y hacia abajo
+// =====================================================================
+//
+// Cada path es geometría minimalista. Los joins y caps son Round (los
+// fija el renderer), así que los corners salen suaves sin tener que
+// definir curvas extra.
+
+fn path_file() -> BezPath {
+    // Documento: rectángulo con esquina superior-derecha plegada.
+    let mut p = BezPath::new();
+    p.move_to((6.0, 3.0));
+    p.line_to((14.0, 3.0));
+    p.line_to((19.0, 8.0));
+    p.line_to((19.0, 21.0));
+    p.line_to((6.0, 21.0));
+    p.close_path();
+    // Pliegue: línea desde la esquina superior-derecha del file hasta
+    // donde "se dobla", luego al borde.
+    p.move_to((14.0, 3.0));
+    p.line_to((14.0, 8.0));
+    p.line_to((19.0, 8.0));
+    p
+}
+
+fn path_folder() -> BezPath {
+    // Folder cerrado: cuerpo + lengüeta arriba-izquierda.
+    let mut p = BezPath::new();
+    p.move_to((3.0, 8.0));
+    p.line_to((3.0, 19.0));
+    p.line_to((21.0, 19.0));
+    p.line_to((21.0, 8.0));
+    p.line_to((11.0, 8.0));
+    p.line_to((9.0, 5.0));
+    p.line_to((3.0, 5.0));
+    p.close_path();
+    p
+}
+
+fn path_folder_open() -> BezPath {
+    // Folder con tapa levantada: el "techo" se inclina hacia la derecha.
+    let mut p = BezPath::new();
+    // Caja inferior.
+    p.move_to((3.0, 8.0));
+    p.line_to((3.0, 19.0));
+    p.line_to((21.0, 19.0));
+    p.line_to((23.0, 11.0));
+    p.line_to((7.0, 11.0));
+    p.line_to((5.0, 19.0));
+    // Lengüeta de la izquierda (sigue ahí).
+    p.move_to((3.0, 8.0));
+    p.line_to((9.0, 8.0));
+    p.line_to((11.0, 11.0));
+    p.line_to((21.0, 11.0));
+    p
+}
+
+fn path_save() -> BezPath {
+    // Floppy: cuadrado con muesca top-right y rectángulo de label abajo.
+    let mut p = BezPath::new();
+    p.move_to((4.0, 4.0));
+    p.line_to((17.0, 4.0));
+    p.line_to((20.0, 7.0));
+    p.line_to((20.0, 20.0));
+    p.line_to((4.0, 20.0));
+    p.close_path();
+    // Slot del shutter arriba.
+    p.move_to((8.0, 4.0));
+    p.line_to((8.0, 9.0));
+    p.line_to((15.0, 9.0));
+    p.line_to((15.0, 4.0));
+    // Rectángulo de label abajo.
+    p.move_to((7.0, 13.0));
+    p.line_to((17.0, 13.0));
+    p.line_to((17.0, 20.0));
+    p.line_to((7.0, 20.0));
+    p.close_path();
+    p
+}
+
+fn path_open() -> BezPath {
+    // Carpeta abriéndose hacia arriba con una flecha que entra.
+    let mut p = BezPath::new();
+    // Folder base.
+    p.move_to((3.0, 19.0));
+    p.line_to((3.0, 8.0));
+    p.line_to((9.0, 8.0));
+    p.line_to((11.0, 10.0));
+    p.line_to((21.0, 10.0));
+    p.line_to((21.0, 19.0));
+    p.close_path();
+    // Flecha entrando desde arriba al centro.
+    p.move_to((12.0, 2.0));
+    p.line_to((12.0, 14.0));
+    p.move_to((9.0, 11.0));
+    p.line_to((12.0, 14.0));
+    p.line_to((15.0, 11.0));
+    p
+}
+
+fn path_plus() -> BezPath {
+    let mut p = BezPath::new();
+    p.move_to((12.0, 5.0));
+    p.line_to((12.0, 19.0));
+    p.move_to((5.0, 12.0));
+    p.line_to((19.0, 12.0));
+    p
+}
+
+fn path_minus() -> BezPath {
+    let mut p = BezPath::new();
+    p.move_to((5.0, 12.0));
+    p.line_to((19.0, 12.0));
+    p
+}
+
+fn path_x() -> BezPath {
+    let mut p = BezPath::new();
+    p.move_to((6.0, 6.0));
+    p.line_to((18.0, 18.0));
+    p.move_to((18.0, 6.0));
+    p.line_to((6.0, 18.0));
+    p
+}
+
+fn path_check() -> BezPath {
+    let mut p = BezPath::new();
+    p.move_to((5.0, 13.0));
+    p.line_to((10.0, 18.0));
+    p.line_to((20.0, 6.0));
+    p
+}
+
+fn path_edit() -> BezPath {
+    // Lápiz: cuerpo diagonal + punta + tag de borrador.
+    let mut p = BezPath::new();
+    p.move_to((4.0, 20.0));
+    p.line_to((8.0, 19.0));
+    p.line_to((20.0, 7.0));
+    p.line_to((17.0, 4.0));
+    p.line_to((5.0, 16.0));
+    p.close_path();
+    p.move_to((14.0, 7.0));
+    p.line_to((17.0, 10.0));
+    p
+}
+
+fn path_trash() -> BezPath {
+    // Tacho: tapa con manijita + cuerpo con tres barras verticales.
+    let mut p = BezPath::new();
+    // Tapa.
+    p.move_to((4.0, 6.0));
+    p.line_to((20.0, 6.0));
+    // Manijita.
+    p.move_to((9.0, 6.0));
+    p.line_to((9.0, 4.0));
+    p.line_to((15.0, 4.0));
+    p.line_to((15.0, 6.0));
+    // Cuerpo.
+    p.move_to((6.0, 6.0));
+    p.line_to((7.0, 21.0));
+    p.line_to((17.0, 21.0));
+    p.line_to((18.0, 6.0));
+    // Barras internas.
+    p.move_to((10.0, 10.0));
+    p.line_to((10.0, 17.0));
+    p.move_to((14.0, 10.0));
+    p.line_to((14.0, 17.0));
+    p
+}
+
+/// Chevron apuntando hacia arriba (default) o rotado por `angle_deg`
+/// alrededor del centro del grid (12, 12). 90° = derecha, 180° = abajo,
+/// 270° = izquierda.
+fn path_chevron(angle_deg: f64) -> BezPath {
+    let mut p = BezPath::new();
+    // Chevron base: forma de ^ apuntando arriba.
+    p.move_to((6.0, 14.0));
+    p.line_to((12.0, 8.0));
+    p.line_to((18.0, 14.0));
+    let theta = angle_deg.to_radians();
+    let center = (12.0, 12.0);
+    Affine::translate(center)
+        * Affine::rotate(theta)
+        * Affine::translate((-center.0, -center.1))
+        * p
+}
+
+fn path_home() -> BezPath {
+    // Casa: triángulo de techo + caja rectangular.
+    let mut p = BezPath::new();
+    p.move_to((3.0, 12.0));
+    p.line_to((12.0, 4.0));
+    p.line_to((21.0, 12.0));
+    // Cuerpo.
+    p.move_to((5.0, 11.0));
+    p.line_to((5.0, 20.0));
+    p.line_to((19.0, 20.0));
+    p.line_to((19.0, 11.0));
+    // Puerta.
+    p.move_to((10.0, 20.0));
+    p.line_to((10.0, 14.0));
+    p.line_to((14.0, 14.0));
+    p.line_to((14.0, 20.0));
+    p
+}
+
+fn path_search() -> BezPath {
+    // Lupa: círculo (poligonal 16 segmentos) + mango diagonal.
+    let mut p = BezPath::new();
+    let cx = 10.5;
+    let cy = 10.5;
+    let r = 5.5;
+    let segments = 24;
+    for i in 0..=segments {
+        let theta = std::f64::consts::TAU * (i as f64) / (segments as f64);
+        let x = cx + r * theta.cos();
+        let y = cy + r * theta.sin();
+        if i == 0 {
+            p.move_to((x, y));
+        } else {
+            p.line_to((x, y));
+        }
+    }
+    // Mango.
+    p.move_to((14.5, 14.5));
+    p.line_to((20.0, 20.0));
+    p
+}
+
+fn path_info() -> BezPath {
+    // i: círculo + punto arriba + barra abajo.
+    let mut p = path_circle(12.0, 12.0, 9.0, 32);
+    // Punto.
+    p.move_to((12.0, 7.0));
+    p.line_to((12.0, 8.5));
+    // Barra.
+    p.move_to((12.0, 11.0));
+    p.line_to((12.0, 17.0));
+    p
+}
+
+fn path_warning() -> BezPath {
+    // Triángulo con ! adentro.
+    let mut p = BezPath::new();
+    p.move_to((12.0, 3.0));
+    p.line_to((22.0, 21.0));
+    p.line_to((2.0, 21.0));
+    p.close_path();
+    p.move_to((12.0, 10.0));
+    p.line_to((12.0, 15.0));
+    p.move_to((12.0, 17.5));
+    p.line_to((12.0, 18.5));
+    p
+}
+
+fn path_error() -> BezPath {
+    // Círculo con X adentro.
+    let mut p = path_circle(12.0, 12.0, 9.0, 32);
+    p.move_to((8.5, 8.5));
+    p.line_to((15.5, 15.5));
+    p.move_to((15.5, 8.5));
+    p.line_to((8.5, 15.5));
+    p
+}
+
+fn path_bell() -> BezPath {
+    // Campana: domo + base + badajo.
+    let mut p = BezPath::new();
+    // Cuerpo con curva suave.
+    p.move_to((5.0, 17.0));
+    p.curve_to((5.0, 8.0), (8.0, 5.0), (12.0, 5.0));
+    p.curve_to((16.0, 5.0), (19.0, 8.0), (19.0, 17.0));
+    p.close_path();
+    // Base.
+    p.move_to((3.5, 17.0));
+    p.line_to((20.5, 17.0));
+    // Badajo.
+    p.move_to((10.5, 20.0));
+    p.line_to((13.5, 20.0));
+    p
+}
+
+fn path_settings() -> BezPath {
+    // Engranaje: 8 dientes radiales + agujero central.
+    let mut p = BezPath::new();
+    let cx = 12.0;
+    let cy = 12.0;
+    let inner_r = 6.5;
+    let outer_r = 9.5;
+    let teeth = 8;
+    for i in 0..teeth * 2 {
+        let theta = std::f64::consts::TAU * (i as f64) / (teeth as f64 * 2.0);
+        // Cada paso alterna entre inner y outer para formar los dientes.
+        let r = if i % 2 == 0 { outer_r } else { inner_r };
+        let x = cx + r * theta.cos();
+        let y = cy + r * theta.sin();
+        if i == 0 {
+            p.move_to((x, y));
+        } else {
+            p.line_to((x, y));
+        }
+    }
+    p.close_path();
+    // Agujero central.
+    let inner = path_circle(cx, cy, 3.0, 16);
+    for el in inner.elements() {
+        p.push(*el);
+    }
+    p
+}
+
+fn path_more() -> BezPath {
+    // Tres puntos horizontales (cada "punto" es un círculo pequeño).
+    let mut p = BezPath::new();
+    for (cx, cy) in &[(6.0, 12.0), (12.0, 12.0), (18.0, 12.0)] {
+        let dot = path_circle(*cx, *cy, 1.5, 12);
+        for el in dot.elements() {
+            p.push(*el);
+        }
+    }
+    p
+}
+
+/// Helper: aproxima un círculo con `segments` lados rectos. Para iconos
+/// stroke esto se ve liso a partir de ~16 segmentos por la suavidad del
+/// Cap::Round. Más barato y más predecible que cubic Beziers para los
+/// glifos chiquitos donde vivimos.
+fn path_circle(cx: f64, cy: f64, r: f64, segments: usize) -> BezPath {
+    let mut p = BezPath::new();
+    for i in 0..=segments {
+        let theta = std::f64::consts::TAU * (i as f64) / (segments as f64);
+        let x = cx + r * theta.cos();
+        let y = cy + r * theta.sin();
+        if i == 0 {
+            p.move_to((x, y));
+        } else {
+            p.line_to((x, y));
+        }
+    }
+    p
+}
+
+// ---------------------------------------------------------------------
+// Multimedia — transporte de reproductor (media-app y demás)
+// ---------------------------------------------------------------------
+
+fn append(dst: &mut BezPath, src: &BezPath) {
+    for el in src.elements() {
+        dst.push(*el);
+    }
+}
+
+fn path_play() -> BezPath {
+    // Triángulo apuntando a la derecha.
+    let mut p = BezPath::new();
+    p.move_to((8.0, 5.0));
+    p.line_to((8.0, 19.0));
+    p.line_to((18.0, 12.0));
+    p.close_path();
+    p
+}
+
+fn path_pause() -> BezPath {
+    // Dos barras verticales.
+    let mut p = BezPath::new();
+    p.move_to((9.0, 6.0));
+    p.line_to((9.0, 18.0));
+    p.move_to((15.0, 6.0));
+    p.line_to((15.0, 18.0));
+    p
+}
+
+fn path_stop() -> BezPath {
+    let mut p = BezPath::new();
+    p.move_to((7.0, 7.0));
+    p.line_to((17.0, 7.0));
+    p.line_to((17.0, 17.0));
+    p.line_to((7.0, 17.0));
+    p.close_path();
+    p
+}
+
+/// Saltar pista: barra + triángulo (a la izquierda si `back`).
+fn path_skip(back: bool) -> BezPath {
+    let mut p = BezPath::new();
+    if back {
+        p.move_to((7.0, 6.0));
+        p.line_to((7.0, 18.0));
+        p.move_to((17.0, 6.0));
+        p.line_to((17.0, 18.0));
+        p.line_to((8.0, 12.0));
+        p.close_path();
+    } else {
+        p.move_to((7.0, 6.0));
+        p.line_to((7.0, 18.0));
+        p.line_to((16.0, 12.0));
+        p.close_path();
+        p.move_to((17.0, 6.0));
+        p.line_to((17.0, 18.0));
+    }
+    p
+}
+
+/// Avance rápido: dos triángulos (a la izquierda si `rewind`).
+fn path_seek(rewind: bool) -> BezPath {
+    let mut p = BezPath::new();
+    if rewind {
+        p.move_to((11.0, 6.0));
+        p.line_to((11.0, 18.0));
+        p.line_to((4.0, 12.0));
+        p.close_path();
+        p.move_to((20.0, 6.0));
+        p.line_to((20.0, 18.0));
+        p.line_to((13.0, 12.0));
+        p.close_path();
+    } else {
+        p.move_to((4.0, 6.0));
+        p.line_to((4.0, 18.0));
+        p.line_to((11.0, 12.0));
+        p.close_path();
+        p.move_to((13.0, 6.0));
+        p.line_to((13.0, 18.0));
+        p.line_to((20.0, 12.0));
+        p.close_path();
+    }
+    p
+}
+
+/// Altavoz; con ondas (normal) o con una X (mute).
+fn path_volume(mute: bool) -> BezPath {
+    let mut p = BezPath::new();
+    p.move_to((3.0, 9.0));
+    p.line_to((8.0, 9.0));
+    p.line_to((12.0, 5.0));
+    p.line_to((12.0, 19.0));
+    p.line_to((8.0, 15.0));
+    p.line_to((3.0, 15.0));
+    p.close_path();
+    if mute {
+        p.move_to((15.0, 9.0));
+        p.line_to((21.0, 15.0));
+        p.move_to((21.0, 9.0));
+        p.line_to((15.0, 15.0));
+    } else {
+        p.move_to((15.0, 9.0));
+        p.quad_to((17.5, 12.0), (15.0, 15.0));
+        p.move_to((17.5, 7.0));
+        p.quad_to((21.5, 12.0), (17.5, 17.0));
+    }
+    p
+}
+
+fn path_repeat() -> BezPath {
+    // Dos flechas horizontales opuestas (loop compacto).
+    let mut p = BezPath::new();
+    p.move_to((6.0, 9.0));
+    p.line_to((16.0, 9.0));
+    p.move_to((14.0, 7.0));
+    p.line_to((17.0, 9.0));
+    p.line_to((14.0, 11.0));
+    p.move_to((18.0, 15.0));
+    p.line_to((8.0, 15.0));
+    p.move_to((10.0, 13.0));
+    p.line_to((7.0, 15.0));
+    p.line_to((10.0, 17.0));
+    p
+}
+
+fn path_shuffle() -> BezPath {
+    // Dos flechas que se cruzan.
+    let mut p = BezPath::new();
+    p.move_to((5.0, 8.0));
+    p.line_to((19.0, 16.0));
+    p.move_to((16.0, 15.5));
+    p.line_to((20.0, 16.5));
+    p.line_to((17.5, 13.0));
+    p.move_to((5.0, 16.0));
+    p.line_to((19.0, 8.0));
+    p.move_to((17.5, 11.0));
+    p.line_to((20.0, 7.5));
+    p.line_to((16.0, 8.5));
+    p
+}
+
+fn path_record() -> BezPath {
+    path_circle(12.0, 12.0, 5.0, 20)
+}
+
+fn path_equalizer() -> BezPath {
+    let mut p = BezPath::new();
+    // Tres deslizadores verticales.
+    p.move_to((7.0, 5.0));
+    p.line_to((7.0, 19.0));
+    p.move_to((12.0, 5.0));
+    p.line_to((12.0, 19.0));
+    p.move_to((17.0, 5.0));
+    p.line_to((17.0, 19.0));
+    // Perillas a distinta altura.
+    p.move_to((5.0, 9.0));
+    p.line_to((9.0, 9.0));
+    p.move_to((10.0, 14.0));
+    p.line_to((14.0, 14.0));
+    p.move_to((15.0, 8.0));
+    p.line_to((19.0, 8.0));
+    p
+}
+
+fn path_camera() -> BezPath {
+    let mut p = BezPath::new();
+    p.move_to((4.0, 8.0));
+    p.line_to((7.0, 8.0));
+    p.line_to((9.0, 6.0));
+    p.line_to((15.0, 6.0));
+    p.line_to((17.0, 8.0));
+    p.line_to((20.0, 8.0));
+    p.line_to((20.0, 18.0));
+    p.line_to((4.0, 18.0));
+    p.close_path();
+    append(&mut p, &path_circle(12.0, 13.0, 3.5, 16));
+    p
+}
+
+fn path_gauge() -> BezPath {
+    // Esfera + aguja (velocidad).
+    let mut p = path_circle(12.0, 13.0, 6.0, 20);
+    p.move_to((12.0, 13.0));
+    p.line_to((16.0, 9.0));
+    p
+}
+
+// ---------------------------------------------------------------------
+// Archivos — tipos por extensión (listados de file manager / shell)
+// ---------------------------------------------------------------------
+
+fn path_image() -> BezPath {
+    // Marco con una montaña y un sol (el clásico "imagen").
+    let mut p = BezPath::new();
+    p.move_to((4.0, 5.0));
+    p.line_to((20.0, 5.0));
+    p.line_to((20.0, 19.0));
+    p.line_to((4.0, 19.0));
+    p.close_path();
+    // Sol.
+    append(&mut p, &path_circle(8.5, 9.5, 1.6, 12));
+    // Montaña (línea quebrada hasta el borde derecho).
+    p.move_to((4.0, 17.0));
+    p.line_to((10.0, 12.0));
+    p.line_to((14.0, 15.0));
+    p.line_to((17.0, 12.0));
+    p.line_to((20.0, 15.0));
+    p
+}
+
+fn path_music() -> BezPath {
+    // Nota musical: dos cabezas redondas unidas por una plica con bandera.
+    let mut p = BezPath::new();
+    // Plicas.
+    p.move_to((9.0, 18.0));
+    p.line_to((9.0, 6.0));
+    p.line_to((19.0, 4.0));
+    p.line_to((19.0, 16.0));
+    // Cabeza izquierda.
+    append(&mut p, &path_circle(7.0, 18.0, 2.0, 14));
+    // Cabeza derecha.
+    append(&mut p, &path_circle(17.0, 16.0, 2.0, 14));
+    p
+}
+
+fn path_film() -> BezPath {
+    // Tira de película: rectángulo con perforaciones a los lados.
+    let mut p = BezPath::new();
+    p.move_to((4.0, 5.0));
+    p.line_to((20.0, 5.0));
+    p.line_to((20.0, 19.0));
+    p.line_to((4.0, 19.0));
+    p.close_path();
+    // Rieles internos (separan perforaciones del cuadro central).
+    p.move_to((8.0, 5.0));
+    p.line_to((8.0, 19.0));
+    p.move_to((16.0, 5.0));
+    p.line_to((16.0, 19.0));
+    // Perforaciones (cuatro tics por lado).
+    for y in [7.5, 11.0, 14.5] {
+        p.move_to((4.0, y));
+        p.line_to((8.0, y));
+        p.move_to((16.0, y));
+        p.line_to((20.0, y));
+    }
+    p
+}
+
+fn path_archive() -> BezPath {
+    // Caja/paquete: tapa arriba + cuerpo + tirador del cierre.
+    let mut p = BezPath::new();
+    // Tapa.
+    p.move_to((3.0, 5.0));
+    p.line_to((21.0, 5.0));
+    p.line_to((21.0, 9.0));
+    p.line_to((3.0, 9.0));
+    p.close_path();
+    // Cuerpo.
+    p.move_to((4.5, 9.0));
+    p.line_to((4.5, 20.0));
+    p.line_to((19.5, 20.0));
+    p.line_to((19.5, 9.0));
+    // Pestaña del cierre.
+    p.move_to((10.0, 12.0));
+    p.line_to((14.0, 12.0));
+    p
+}
+
+fn path_code() -> BezPath {
+    // Corchetes angulares </> — universal para "código".
+    let mut p = BezPath::new();
+    // Chevron izquierdo.
+    p.move_to((9.0, 7.0));
+    p.line_to((4.0, 12.0));
+    p.line_to((9.0, 17.0));
+    // Chevron derecho.
+    p.move_to((15.0, 7.0));
+    p.line_to((20.0, 12.0));
+    p.line_to((15.0, 17.0));
+    // Barra diagonal central.
+    p.move_to((13.0, 6.0));
+    p.line_to((11.0, 18.0));
+    p
+}
+
+fn path_file_text() -> BezPath {
+    // Documento (como `file`) con líneas de texto adentro.
+    let mut p = path_file();
+    p.move_to((8.5, 12.0));
+    p.line_to((16.5, 12.0));
+    p.move_to((8.5, 15.0));
+    p.line_to((16.5, 15.0));
+    p.move_to((8.5, 18.0));
+    p.line_to((13.5, 18.0));
+    p
+}
+
+fn path_link() -> BezPath {
+    // Symlink: dos eslabones de cadena en diagonal.
+    let mut p = BezPath::new();
+    // Eslabón superior-izquierdo (cápsula inclinada).
+    p.move_to((10.0, 14.0));
+    p.line_to((7.0, 11.0));
+    p.curve_to((5.0, 9.0), (5.0, 7.0), (7.0, 5.0));
+    p.curve_to((9.0, 3.0), (11.0, 3.0), (13.0, 5.0));
+    p.line_to((15.0, 7.0));
+    // Eslabón inferior-derecho.
+    p.move_to((14.0, 10.0));
+    p.line_to((17.0, 13.0));
+    p.curve_to((19.0, 15.0), (19.0, 17.0), (17.0, 19.0));
+    p.curve_to((15.0, 21.0), (13.0, 21.0), (11.0, 19.0));
+    p.line_to((9.0, 17.0));
+    p
+}
+
+fn path_font() -> BezPath {
+    // Letra "A" serif — glifo de fuente tipográfica.
+    let mut p = BezPath::new();
+    // Astas de la A.
+    p.move_to((6.0, 20.0));
+    p.line_to((12.0, 4.0));
+    p.line_to((18.0, 20.0));
+    // Travesaño.
+    p.move_to((8.5, 14.0));
+    p.line_to((15.5, 14.0));
+    // Serifas inferiores.
+    p.move_to((4.5, 20.0));
+    p.line_to((7.5, 20.0));
+    p.move_to((16.5, 20.0));
+    p.line_to((19.5, 20.0));
+    p
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn all_icons_have_nonempty_path() {
+        let all = [
+            Icon::File, Icon::Folder, Icon::FolderOpen, Icon::Save, Icon::Open,
+            Icon::Plus, Icon::Minus, Icon::X, Icon::Check, Icon::Edit, Icon::Trash,
+            Icon::ChevronUp, Icon::ChevronDown, Icon::ChevronLeft, Icon::ChevronRight,
+            Icon::Home, Icon::Search, Icon::Info, Icon::Warning, Icon::Error,
+            Icon::Bell, Icon::Settings, Icon::More,
+            Icon::Play, Icon::Pause, Icon::Stop, Icon::SkipBack, Icon::SkipForward,
+            Icon::Rewind, Icon::FastForward, Icon::Volume, Icon::VolumeMute,
+            Icon::Repeat, Icon::Shuffle, Icon::Record, Icon::Equalizer,
+            Icon::Camera, Icon::Gauge,
+            Icon::Image, Icon::Music, Icon::Film, Icon::Archive,
+            Icon::Code, Icon::FileText, Icon::Link, Icon::Font,
+        ];
+        for icon in all {
+            let p = icon.path();
+            assert!(
+                p.elements().len() > 0,
+                "icono {} produjo path vacío",
+                icon.name()
+            );
+        }
+    }
+
+    #[test]
+    fn icon_names_are_unique() {
+        let all = [
+            Icon::File, Icon::Folder, Icon::FolderOpen, Icon::Save, Icon::Open,
+            Icon::Plus, Icon::Minus, Icon::X, Icon::Check, Icon::Edit, Icon::Trash,
+            Icon::ChevronUp, Icon::ChevronDown, Icon::ChevronLeft, Icon::ChevronRight,
+            Icon::Home, Icon::Search, Icon::Info, Icon::Warning, Icon::Error,
+            Icon::Bell, Icon::Settings, Icon::More,
+            Icon::Play, Icon::Pause, Icon::Stop, Icon::SkipBack, Icon::SkipForward,
+            Icon::Rewind, Icon::FastForward, Icon::Volume, Icon::VolumeMute,
+            Icon::Repeat, Icon::Shuffle, Icon::Record, Icon::Equalizer,
+            Icon::Camera, Icon::Gauge,
+            Icon::Image, Icon::Music, Icon::Film, Icon::Archive,
+            Icon::Code, Icon::FileText, Icon::Link, Icon::Font,
+        ];
+        let mut names: Vec<&str> = all.iter().map(|i| i.name()).collect();
+        let n = names.len();
+        names.sort();
+        names.dedup();
+        assert_eq!(names.len(), n, "nombres duplicados en Icon::name()");
+    }
+}
diff --git a/llimphi-layout/Cargo.toml b/llimphi-layout/Cargo.toml
new file mode 100644
index 0000000..bbcb88b
--- /dev/null
+++ b/llimphi-layout/Cargo.toml
@@ -0,0 +1,19 @@
+[package]
+name = "llimphi-layout"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+
+[dependencies]
+taffy = { workspace = true }
+
+[dev-dependencies]
+llimphi-hal = { path = "../llimphi-hal" }
+llimphi-raster = { path = "../llimphi-raster" }
+pollster = { workspace = true }
+
+[[example]]
+name = "layout_panels"
+path = "examples/layout_panels.rs"
diff --git a/llimphi-layout/LEEME.md b/llimphi-layout/LEEME.md
new file mode 100644
index 0000000..35f1fa1
--- /dev/null
+++ b/llimphi-layout/LEEME.md
@@ -0,0 +1,10 @@
+# llimphi-layout
+
+> Layout taffy + extensiones de [llimphi](../README.md).
+
+Wrapper sobre `taffy` (Flexbox + Grid) con tipos ergonómicos para `View<Msg>`. Cache del layout calculado entre frames; invalidación dirigida cuando el árbol cambia.
+
+## Deps
+
+- `taffy`, `glam`
+- `serde`
diff --git a/llimphi-layout/README.md b/llimphi-layout/README.md
new file mode 100644
index 0000000..01e1677
--- /dev/null
+++ b/llimphi-layout/README.md
@@ -0,0 +1,10 @@
+# llimphi-layout
+
+> Taffy layout + extensions of [llimphi](../README.md).
+
+Wrapper over `taffy` (Flexbox + Grid) with ergonomic types for `View<Msg>`. Cache of computed layout between frames; directed invalidation when the tree changes.
+
+## Deps
+
+- `taffy`, `glam`
+- `serde`
diff --git a/llimphi-layout/examples/layout_panels.rs b/llimphi-layout/examples/layout_panels.rs
new file mode 100644
index 0000000..f3ecdb2
--- /dev/null
+++ b/llimphi-layout/examples/layout_panels.rs
@@ -0,0 +1,250 @@
+//! Fase 3 de Llimphi: 3 paneles (sidebar + header/body/footer) que se
+//! reorganizan al redimensionar la ventana. Pintados por vello a través
+//! de llimphi-raster.
+//!
+//! Corre con: `cargo run -p llimphi-layout --example layout_panels --release`.
+
+use std::sync::Arc;
+
+use llimphi_hal::winit::application::ApplicationHandler;
+use llimphi_hal::winit::dpi::LogicalSize;
+use llimphi_hal::winit::event::WindowEvent;
+use llimphi_hal::winit::event_loop::{ActiveEventLoop, ControlFlow, EventLoop};
+use llimphi_hal::winit::window::{Window, WindowAttributes, WindowId};
+use llimphi_hal::{Hal, Surface, WinitSurface};
+use llimphi_layout::{
+    taffy::{prelude::*, Style},
+    ComputedLayout, LayoutTree, Rect,
+};
+use llimphi_raster::kurbo::{Affine, RoundedRect};
+use llimphi_raster::peniko::{color::palette, Color, Fill};
+use llimphi_raster::{vello, Renderer};
+
+struct Panels {
+    sidebar: NodeId,
+    header: NodeId,
+    body: NodeId,
+    footer: NodeId,
+    root: NodeId,
+}
+
+struct State {
+    window: Arc<Window>,
+    hal: Hal,
+    surface: WinitSurface,
+    renderer: Renderer,
+    scene: vello::Scene,
+    layout: LayoutTree,
+    panels: Panels,
+}
+
+struct App {
+    state: Option<State>,
+}
+
+fn build_tree(layout: &mut LayoutTree) -> Panels {
+    let sidebar = layout
+        .leaf(Style {
+            size: Size {
+                width: length(220.0_f32),
+                height: percent(1.0_f32),
+            },
+            ..Default::default()
+        })
+        .unwrap();
+
+    let header = layout
+        .leaf(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(64.0_f32),
+            },
+            ..Default::default()
+        })
+        .unwrap();
+
+    let body = layout
+        .leaf(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: Dimension::auto(),
+            },
+            flex_grow: 1.0,
+            ..Default::default()
+        })
+        .unwrap();
+
+    let footer = layout
+        .leaf(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(40.0_f32),
+            },
+            ..Default::default()
+        })
+        .unwrap();
+
+    let content = layout
+        .node(
+            Style {
+                flex_direction: FlexDirection::Column,
+                flex_grow: 1.0,
+                size: Size {
+                    width: Dimension::auto(),
+                    height: percent(1.0_f32),
+                },
+                gap: Size {
+                    width: length(0.0_f32),
+                    height: length(8.0_f32),
+                },
+                padding: Rect_(length(8.0_f32)),
+                ..Default::default()
+            },
+            &[header, body, footer],
+        )
+        .unwrap();
+
+    let root = layout
+        .node(
+            Style {
+                flex_direction: FlexDirection::Row,
+                size: Size {
+                    width: percent(1.0_f32),
+                    height: percent(1.0_f32),
+                },
+                ..Default::default()
+            },
+            &[sidebar, content],
+        )
+        .unwrap();
+
+    Panels {
+        sidebar,
+        header,
+        body,
+        footer,
+        root,
+    }
+}
+
+/// Helper para pasar el mismo length a todos los lados de un Rect.
+#[allow(non_snake_case)]
+fn Rect_(v: LengthPercentage) -> taffy::Rect<LengthPercentage> {
+    taffy::Rect {
+        left: v,
+        right: v,
+        top: v,
+        bottom: v,
+    }
+}
+
+fn paint(scene: &mut vello::Scene, computed: &ComputedLayout, panels: &Panels) {
+    fn rect(scene: &mut vello::Scene, r: Rect, color: Color, radius: f64) {
+        let rr = RoundedRect::new(
+            r.x as f64,
+            r.y as f64,
+            (r.x + r.w) as f64,
+            (r.y + r.h) as f64,
+            radius,
+        );
+        scene.fill(Fill::NonZero, Affine::IDENTITY, color, None, &rr);
+    }
+
+    if let Some(r) = computed.get(panels.sidebar) {
+        rect(scene, r, Color::from_rgba8(36, 44, 60, 255), 0.0);
+    }
+    if let Some(r) = computed.get(panels.header) {
+        rect(scene, r, Color::from_rgba8(60, 80, 110, 255), 8.0);
+    }
+    if let Some(r) = computed.get(panels.body) {
+        rect(scene, r, Color::from_rgba8(80, 110, 150, 255), 8.0);
+    }
+    if let Some(r) = computed.get(panels.footer) {
+        rect(scene, r, Color::from_rgba8(60, 80, 110, 255), 8.0);
+    }
+}
+
+impl ApplicationHandler for App {
+    fn resumed(&mut self, event_loop: &ActiveEventLoop) {
+        if self.state.is_some() {
+            return;
+        }
+        let window = event_loop
+            .create_window(
+                WindowAttributes::default()
+                    .with_title("llimphi · layout_panels")
+                    .with_inner_size(LogicalSize::new(960u32, 540u32)),
+            )
+            .expect("create window");
+        let window = Arc::new(window);
+        let hal = pollster::block_on(Hal::new(None)).expect("hal");
+        let surface = WinitSurface::new(&hal, window.clone()).expect("surface");
+        let renderer = Renderer::new(&hal).expect("renderer");
+        let mut layout = LayoutTree::new();
+        let panels = build_tree(&mut layout);
+        window.request_redraw();
+        self.state = Some(State {
+            window,
+            hal,
+            surface,
+            renderer,
+            scene: vello::Scene::new(),
+            layout,
+            panels,
+        });
+    }
+
+    fn window_event(
+        &mut self,
+        event_loop: &ActiveEventLoop,
+        _id: WindowId,
+        event: WindowEvent,
+    ) {
+        let Some(state) = self.state.as_mut() else {
+            return;
+        };
+        match event {
+            WindowEvent::CloseRequested => event_loop.exit(),
+            WindowEvent::Resized(size) => {
+                state.surface.resize(size.width, size.height);
+                state.window.request_redraw();
+            }
+            WindowEvent::RedrawRequested => {
+                let frame = match state.surface.acquire() {
+                    Ok(f) => f,
+                    Err(_) => {
+                        let (w, h) = state.surface.size();
+                        state.surface.resize(w, h);
+                        state.window.request_redraw();
+                        return;
+                    }
+                };
+                let (w, h) = frame.size();
+                let computed = state
+                    .layout
+                    .compute(state.panels.root, (w as f32, h as f32))
+                    .expect("compute layout");
+                state.scene.reset();
+                paint(&mut state.scene, &computed, &state.panels);
+                if let Err(e) = state.renderer.render(
+                    &state.hal,
+                    &state.scene,
+                    &frame,
+                    palette::css::BLACK,
+                ) {
+                    eprintln!("render error: {e}");
+                }
+                state.surface.present(frame, &state.hal);
+                state.window.request_redraw();
+            }
+            _ => {}
+        }
+    }
+}
+
+fn main() {
+    let event_loop = EventLoop::new().expect("event loop");
+    event_loop.set_control_flow(ControlFlow::Poll);
+    let mut app = App { state: None };
+    event_loop.run_app(&mut app).expect("run app");
+}
diff --git a/llimphi-layout/src/lib.rs b/llimphi-layout/src/lib.rs
new file mode 100644
index 0000000..b6932e5
--- /dev/null
+++ b/llimphi-layout/src/lib.rs
@@ -0,0 +1,184 @@
+//! llimphi-layout — Física del Espacio.
+//!
+//! Wrapper sobre `taffy` que resuelve árboles flex/grid y devuelve
+//! coordenadas absolutas (no relativas al padre). El consumidor pasa el
+//! árbol a `compute(root, viewport)` y obtiene un [`ComputedLayout`] con
+//! un rect absoluto por nodo, listo para `llimphi-raster`.
+
+use std::collections::HashMap;
+
+pub use taffy;
+pub use taffy::prelude::*;
+
+/// Errores del motor de layout.
+#[derive(Debug)]
+pub enum LayoutError {
+    Taffy(String),
+}
+
+impl std::fmt::Display for LayoutError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Taffy(s) => write!(f, "taffy: {s}"),
+        }
+    }
+}
+
+impl std::error::Error for LayoutError {}
+
+/// Caja absoluta de un nodo (origen en la esquina superior izquierda del viewport).
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub struct Rect {
+    pub x: f32,
+    pub y: f32,
+    pub w: f32,
+    pub h: f32,
+}
+
+/// Resultado de [`LayoutTree::compute`]: rect absoluto por nodo del árbol.
+#[derive(Debug, Default)]
+pub struct ComputedLayout {
+    pub rects: HashMap<NodeId, Rect>,
+}
+
+impl ComputedLayout {
+    pub fn get(&self, node: NodeId) -> Option<Rect> {
+        self.rects.get(&node).copied()
+    }
+}
+
+/// Árbol de layout. Encapsula la `TaffyTree` y la lógica de absolutización.
+pub struct LayoutTree {
+    inner: TaffyTree<()>,
+}
+
+impl Default for LayoutTree {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl LayoutTree {
+    pub fn new() -> Self {
+        Self {
+            inner: TaffyTree::new(),
+        }
+    }
+
+    /// Vacía el árbol conservando la capacidad ya asignada. Permite
+    /// reusar la misma `LayoutTree` entre frames sin re-allocar el
+    /// slotmap interno de taffy: `clear()` + `mount` en vez de
+    /// `LayoutTree::new()` por frame. Los `NodeId` emitidos antes de
+    /// `clear()` quedan inválidos (el caller ya volcó lo que necesitaba
+    /// a un `ComputedLayout`, que es dueño de sus rects).
+    pub fn clear(&mut self) {
+        self.inner.clear();
+    }
+
+    /// Crea una hoja (nodo sin hijos).
+    pub fn leaf(&mut self, style: Style) -> Result<NodeId, LayoutError> {
+        self.inner
+            .new_leaf(style)
+            .map_err(|e| LayoutError::Taffy(e.to_string()))
+    }
+
+    /// Crea un nodo contenedor con hijos.
+    pub fn node(&mut self, style: Style, children: &[NodeId]) -> Result<NodeId, LayoutError> {
+        self.inner
+            .new_with_children(style, children)
+            .map_err(|e| LayoutError::Taffy(e.to_string()))
+    }
+
+    /// Calcula el layout para `root` con viewport `(w, h)` y devuelve rects absolutos.
+    pub fn compute(
+        &mut self,
+        root: NodeId,
+        viewport: (f32, f32),
+    ) -> Result<ComputedLayout, LayoutError> {
+        self.inner
+            .compute_layout(
+                root,
+                taffy::Size {
+                    width: AvailableSpace::Definite(viewport.0),
+                    height: AvailableSpace::Definite(viewport.1),
+                },
+            )
+            .map_err(|e| LayoutError::Taffy(e.to_string()))?;
+        let mut out = ComputedLayout::default();
+        flatten(&self.inner, root, 0.0, 0.0, &mut out.rects)?;
+        Ok(out)
+    }
+
+    /// Como [`Self::compute`] pero pasando una función de medición por
+    /// nodo. Taffy la invoca sobre las **hojas** que necesita dimensionar
+    /// (texto que envuelve, contenido intrínseco) con el `NodeId`, las
+    /// dimensiones ya conocidas y el espacio disponible; el caller devuelve
+    /// el tamaño en px. Devolver `Size::ZERO` deja que el estilo decida (el
+    /// comportamiento de [`Self::compute`] para hojas sin contenido). El
+    /// `NodeId` permite al caller mantener su propio mapa nodo→contenido
+    /// (p. ej. texto a shapear con parley) sin acoplar este crate a la capa
+    /// de tipografía.
+    pub fn compute_with_measure<F>(
+        &mut self,
+        root: NodeId,
+        viewport: (f32, f32),
+        mut measure: F,
+    ) -> Result<ComputedLayout, LayoutError>
+    where
+        F: FnMut(NodeId, taffy::Size<Option<f32>>, taffy::Size<AvailableSpace>) -> taffy::Size<f32>,
+    {
+        self.inner
+            .compute_layout_with_measure(
+                root,
+                taffy::Size {
+                    width: AvailableSpace::Definite(viewport.0),
+                    height: AvailableSpace::Definite(viewport.1),
+                },
+                |known, available, node_id, _ctx, _style| {
+                    measure(node_id, known, available)
+                },
+            )
+            .map_err(|e| LayoutError::Taffy(e.to_string()))?;
+        let mut out = ComputedLayout::default();
+        flatten(&self.inner, root, 0.0, 0.0, &mut out.rects)?;
+        Ok(out)
+    }
+
+    pub fn inner(&self) -> &TaffyTree<()> {
+        &self.inner
+    }
+
+    pub fn inner_mut(&mut self) -> &mut TaffyTree<()> {
+        &mut self.inner
+    }
+}
+
+fn flatten(
+    tree: &TaffyTree<()>,
+    node: NodeId,
+    ox: f32,
+    oy: f32,
+    out: &mut HashMap<NodeId, Rect>,
+) -> Result<(), LayoutError> {
+    let layout = tree
+        .layout(node)
+        .map_err(|e| LayoutError::Taffy(e.to_string()))?;
+    let x = ox + layout.location.x;
+    let y = oy + layout.location.y;
+    out.insert(
+        node,
+        Rect {
+            x,
+            y,
+            w: layout.size.width,
+            h: layout.size.height,
+        },
+    );
+    let children = tree
+        .children(node)
+        .map_err(|e| LayoutError::Taffy(e.to_string()))?;
+    for child in children {
+        flatten(tree, child, x, y, out)?;
+    }
+    Ok(())
+}
diff --git a/llimphi-motion/Cargo.toml b/llimphi-motion/Cargo.toml
new file mode 100644
index 0000000..cb28654
--- /dev/null
+++ b/llimphi-motion/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-motion"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-motion — Tween<T> + helpers de animación integrados al bucle Elm de llimphi-ui (Handle::spawn_periodic). Lerp para f32, Color, (f32,f32). Easings comparten convenciones de llimphi-theme::motion."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/llimphi-motion/src/lib.rs b/llimphi-motion/src/lib.rs
new file mode 100644
index 0000000..2b636d8
--- /dev/null
+++ b/llimphi-motion/src/lib.rs
@@ -0,0 +1,259 @@
+//! `llimphi-motion` — animaciones simples sobre el bucle Elm de Llimphi.
+//!
+//! Llimphi es Elm puro: `update(msg) -> model`. Para animar un valor en
+//! el tiempo (un alpha que sube de 0 a 1, una posición que se desliza)
+//! la app guarda un [`Tween`] en su modelo y pide al `Handle` que le
+//! dispatchee un `Msg::Tick` periódicamente (cada ~16 ms) hasta que la
+//! animación termine. Cada `update` lee `tween.value()` y la `view` la
+//! pinta.
+//!
+//! Esta crate es deliberadamente chiquita:
+//! - [`Lerp`] — interpolación lineal genérica (impls para `f32`,
+//!   `(f32, f32)` y `Color`).
+//! - [`Tween`] — interpolación temporizada con easing entre dos valores.
+//! - [`animate`] — helper que arranca un loop de ticks autosuficiente
+//!   sobre un `Handle`.
+//!
+//! Las duraciones y easings canónicos viven en [`llimphi_theme::motion`].
+//!
+//! ## Patrón típico
+//!
+//! ```ignore
+//! use llimphi_motion::{Tween, animate};
+//! use llimphi_theme::motion;
+//!
+//! enum Msg { ToastShow, Tick, ToastHidden }
+//! struct Model { toast_alpha: Tween<f32> }
+//!
+//! // update:
+//! Msg::ToastShow => {
+//!     model.toast_alpha = Tween::new(0.0, 1.0, motion::NORMAL, motion::ease_out_cubic);
+//!     animate(handle, motion::NORMAL, || Msg::Tick);
+//!     model
+//! }
+//! Msg::Tick => {
+//!     // El loop interno terminará solo cuando el tween esté done;
+//!     // la `view` ya lee el alpha actual sin más.
+//!     model
+//! }
+//!
+//! // view:
+//! toast_view().alpha(model.toast_alpha.value())
+//! ```
+
+#![forbid(unsafe_code)]
+
+use std::time::{Duration, Instant};
+
+pub use llimphi_theme::motion;
+pub use llimphi_theme::Color;
+use llimphi_ui::Handle;
+
+/// Interpolación lineal genérica entre `self` y `other` con factor `t`
+/// en `[0.0, 1.0]`. Cada impl decide cómo combinar componentes; los
+/// callers pasan `t` ya con el easing aplicado.
+pub trait Lerp: Copy {
+    fn lerp(self, other: Self, t: f32) -> Self;
+}
+
+impl Lerp for f32 {
+    #[inline]
+    fn lerp(self, other: Self, t: f32) -> Self {
+        self + (other - self) * t
+    }
+}
+
+impl Lerp for f64 {
+    #[inline]
+    fn lerp(self, other: Self, t: f32) -> Self {
+        self + (other - self) * t as f64
+    }
+}
+
+impl Lerp for (f32, f32) {
+    #[inline]
+    fn lerp(self, other: Self, t: f32) -> Self {
+        (self.0.lerp(other.0, t), self.1.lerp(other.1, t))
+    }
+}
+
+impl Lerp for (f64, f64) {
+    #[inline]
+    fn lerp(self, other: Self, t: f32) -> Self {
+        (self.0.lerp(other.0, t), self.1.lerp(other.1, t))
+    }
+}
+
+impl Lerp for Color {
+    /// Interpolación componente a componente sobre los 4 canales RGBA
+    /// en espacio sRGB lineal-asumido. No es colorimetricamente correcto
+    /// (debería ser oklab), pero para fades de alpha/tinte de UI es
+    /// indistinguible y mucho más barato.
+    #[inline]
+    fn lerp(self, other: Self, t: f32) -> Self {
+        let a = self.components;
+        let b = other.components;
+        Color {
+            components: [
+                a[0].lerp(b[0], t),
+                a[1].lerp(b[1], t),
+                a[2].lerp(b[2], t),
+                a[3].lerp(b[3], t),
+            ],
+            ..self
+        }
+    }
+}
+
+/// Animación temporizada de un valor `T: Lerp` entre `from` y `to`.
+///
+/// El tween es **observable**: la app llama [`Tween::value`] desde su
+/// `view` y obtiene el valor interpolado para el frame actual. No tiene
+/// estado mutable: el tiempo se mide contra un `Instant` de inicio, así
+/// que el mismo `Tween` puede ser leído desde múltiples lugares sin
+/// que se desincronice.
+#[derive(Debug, Clone, Copy)]
+pub struct Tween<T: Lerp> {
+    pub from: T,
+    pub to: T,
+    started: Instant,
+    pub duration: Duration,
+    /// Función de easing aplicada a `t ∈ [0, 1]` antes de interpolar.
+    /// Las canónicas viven en [`llimphi_theme::motion`].
+    pub easing: fn(f32) -> f32,
+}
+
+impl<T: Lerp> Tween<T> {
+    /// Arranca el tween *ahora*. La primera lectura siguiente devuelve
+    /// `from`; cuando hayan pasado `duration` segundos, devuelve `to`.
+    pub fn new(from: T, to: T, duration: Duration, easing: fn(f32) -> f32) -> Self {
+        Self {
+            from,
+            to,
+            started: Instant::now(),
+            duration,
+            easing,
+        }
+    }
+
+    /// Tween que ya está terminado y siempre devuelve el mismo valor.
+    /// Útil para inicializar un campo de modelo antes de cualquier animación.
+    pub fn idle(value: T) -> Self {
+        Self {
+            from: value,
+            to: value,
+            started: Instant::now() - Duration::from_secs(1),
+            duration: Duration::from_millis(1),
+            easing: motion::linear,
+        }
+    }
+
+    /// Progreso normalizado en `[0.0, 1.0]`, ya con easing aplicado.
+    pub fn progress(&self) -> f32 {
+        if self.duration.is_zero() {
+            return 1.0;
+        }
+        let elapsed = self.started.elapsed().as_secs_f32();
+        let t = (elapsed / self.duration.as_secs_f32()).clamp(0.0, 1.0);
+        (self.easing)(t)
+    }
+
+    /// Valor actual interpolado.
+    pub fn value(&self) -> T {
+        self.from.lerp(self.to, self.progress())
+    }
+
+    /// `true` si la animación ya completó su `duration`.
+    pub fn done(&self) -> bool {
+        self.started.elapsed() >= self.duration
+    }
+}
+
+/// Lanza un loop de ticks de animación que dispara `make_msg()` a ~60 Hz
+/// durante `duration`, y se autodetiene cuando termina. El callback no
+/// hace falta que verifique el tiempo: la app lee `tween.value()` y el
+/// hilo interno se encarga de los frames.
+///
+/// Cada tick dispatcha un `Msg` al `update` — la app no tiene que hacer
+/// nada en ese update salvo, eventualmente, leer el `Tween` cuya
+/// `progress()` cambió desde la última lectura. La `view` luego se
+/// repinta con el valor interpolado del frame.
+///
+/// **Detención**: el hilo de ticks vive `duration + 32ms` (un frame
+/// extra de gracia para que el último tick caiga *después* del tope
+/// del tween y la `view` final pinte el valor `to`). No hace falta
+/// cancelar manualmente. Para tweens encadenados (A → B → C) la app
+/// llama `animate()` de nuevo desde el `update` cuando el tween anterior
+/// termina.
+///
+/// Internamente usa un hilo dedicado (no `spawn_periodic`, que es
+/// infinito) y dispatcha vía `Handle::dispatch` clonado.
+pub fn animate<F, Msg>(handle: &Handle<Msg>, duration: Duration, make_msg: F)
+where
+    F: Fn() -> Msg + Send + Sync + 'static,
+    Msg: Clone + Send + 'static,
+{
+    let frame = Duration::from_millis(16);
+    let total = duration + Duration::from_millis(32);
+    let handle = handle.clone();
+    std::thread::spawn(move || {
+        let start = Instant::now();
+        while start.elapsed() <= total {
+            handle.dispatch(make_msg());
+            std::thread::sleep(frame);
+        }
+    });
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn lerp_f32_endpoints() {
+        assert!((0.0_f32.lerp(10.0, 0.0) - 0.0).abs() < 1e-6);
+        assert!((0.0_f32.lerp(10.0, 1.0) - 10.0).abs() < 1e-6);
+        assert!((0.0_f32.lerp(10.0, 0.5) - 5.0).abs() < 1e-6);
+    }
+
+    #[test]
+    fn lerp_tuple_componentwise() {
+        let p = (0.0_f32, 100.0).lerp((10.0, 0.0), 0.5);
+        assert!((p.0 - 5.0).abs() < 1e-6);
+        assert!((p.1 - 50.0).abs() < 1e-6);
+    }
+
+    #[test]
+    fn lerp_color_endpoints() {
+        let a = Color::from_rgba8(0, 0, 0, 0);
+        let b = Color::from_rgba8(255, 255, 255, 255);
+        let mid = a.lerp(b, 0.5);
+        let [r, g, bl, al] = mid.components;
+        assert!((r - 0.5).abs() < 1e-3);
+        assert!((g - 0.5).abs() < 1e-3);
+        assert!((bl - 0.5).abs() < 1e-3);
+        assert!((al - 0.5).abs() < 1e-3);
+    }
+
+    #[test]
+    fn tween_idle_returns_constant_value() {
+        let t = Tween::idle(42.0_f32);
+        assert!((t.value() - 42.0).abs() < 1e-6);
+        assert!(t.done());
+    }
+
+    #[test]
+    fn tween_zero_duration_immediately_done() {
+        let t = Tween::new(0.0_f32, 1.0, Duration::ZERO, motion::linear);
+        assert!((t.progress() - 1.0).abs() < 1e-6);
+        assert!((t.value() - 1.0).abs() < 1e-6);
+    }
+
+    #[test]
+    fn tween_progress_clamps_after_duration() {
+        let t = Tween::new(0.0_f32, 10.0, Duration::from_millis(1), motion::linear);
+        std::thread::sleep(Duration::from_millis(10));
+        assert!((t.progress() - 1.0).abs() < 1e-6);
+        assert!((t.value() - 10.0).abs() < 1e-6);
+    }
+}
diff --git a/llimphi-raster/Cargo.toml b/llimphi-raster/Cargo.toml
new file mode 100644
index 0000000..37ce9d1
--- /dev/null
+++ b/llimphi-raster/Cargo.toml
@@ -0,0 +1,24 @@
+[package]
+name = "llimphi-raster"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+
+[dependencies]
+llimphi-hal = { path = "../llimphi-hal" }
+vello = { workspace = true }
+pollster = { workspace = true }
+
+[[example]]
+name = "render_node"
+path = "examples/render_node.rs"
+
+[[example]]
+name = "spike_gpu_directo"
+path = "examples/spike_gpu_directo.rs"
+
+[[example]]
+name = "gpu_million_points"
+path = "examples/gpu_million_points.rs"
diff --git a/llimphi-raster/LEEME.md b/llimphi-raster/LEEME.md
new file mode 100644
index 0000000..7e3e456
--- /dev/null
+++ b/llimphi-raster/LEEME.md
@@ -0,0 +1,10 @@
+# llimphi-raster
+
+> Rasterizer vello + cache de scenes de [llimphi](../README.md).
+
+Wrapper sobre `vello`/`wgpu` con cache LRU de `Scene`s pre-renderizadas (para layouts estáticos que no cambian frame a frame). Manejo de antialiasing, clipping, blend modes. Trabaja contra `Surface` del HAL.
+
+## Deps
+
+- [`llimphi-hal`](../llimphi-hal/README.md)
+- `vello`, `wgpu`, `peniko`, `kurbo`
diff --git a/llimphi-raster/README.md b/llimphi-raster/README.md
new file mode 100644
index 0000000..c929b08
--- /dev/null
+++ b/llimphi-raster/README.md
@@ -0,0 +1,10 @@
+# llimphi-raster
+
+> Vello rasterizer + scene cache of [llimphi](../README.md).
+
+Wrapper over `vello`/`wgpu` with LRU cache of pre-rendered `Scene`s (for static layouts that don't change frame to frame). Antialiasing, clipping, blend modes. Works against the HAL's `Surface`.
+
+## Deps
+
+- [`llimphi-hal`](../llimphi-hal/README.md)
+- `vello`, `wgpu`, `peniko`, `kurbo`
diff --git a/llimphi-raster/examples/gpu_million_points.rs b/llimphi-raster/examples/gpu_million_points.rs
new file mode 100644
index 0000000..1449bcb
--- /dev/null
+++ b/llimphi-raster/examples/gpu_million_points.rs
@@ -0,0 +1,111 @@
+//! Demo headless del HAL GPU directo — Fase 6 del SDD
+//! `02_ruway/llimphi/SDD.md` §"GPU directo wgpu".
+//!
+//! A diferencia de `spike_gpu_directo` (que compara vello vs un pipeline
+//! mock para tomar la decisión arquitectónica), este ejemplo usa
+//! directamente la API pública `GpuPipelines` + `GpuBatch` sobre N
+//! puntos (rects 1.2×1.2 px) sintéticos. Su rol es:
+//!
+//! - Documentar el uso mínimo: 8 líneas de código + uso de Color.
+//! - Ejercitar el HAL sin ninguna app (sin winit, sin runtime Elm).
+//! - Servir de benchmark de referencia post-implementación: tiempo
+//!   total CPU+GPU para 100K / 500K / 1M / 5M rects.
+//!
+//! Corre con: `cargo run -p llimphi-raster --example gpu_million_points --release`.
+
+use std::io::Write;
+use std::time::Instant;
+
+use llimphi_hal::{wgpu, Hal};
+use llimphi_raster::peniko::Color;
+use llimphi_raster::{GpuBatch, GpuPipelines};
+
+const W: u32 = 1024;
+const H: u32 = 1024;
+const FMT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba8Unorm;
+const WARMUP: usize = 5;
+const MEASURED: usize = 15;
+const SIZES: &[u32] = &[100_000, 500_000, 1_000_000, 5_000_000];
+
+fn main() {
+    let hal = pollster::block_on(Hal::new(None)).expect("hal");
+    let pipelines = GpuPipelines::new(&hal.device, FMT);
+
+    let (_tex, view) = make_target(&hal.device);
+
+    println!();
+    println!("gpu_million_points — GpuBatch + 3 pipelines · target {W}×{H} Rgba8Unorm");
+    println!("warmup {WARMUP}, measured {MEASURED}");
+    println!("  {:>10} | {:>14} | {:>14}", "N", "ms / frame", "Mprim/s");
+    println!("  {:->10} + {:->14} + {:->14}", "", "", "");
+
+    for &n in SIZES {
+        let ms = bench(&hal, &pipelines, &view, n);
+        let throughput = (n as f64 / 1_000_000.0) / (ms / 1000.0);
+        println!("  {:>10} | {:>14.3} | {:>14.2}", n, ms, throughput);
+        let _ = std::io::stdout().flush();
+    }
+    println!();
+    println!("(en llvmpipe estos números son CPU-bound — ver Fase 0 del SDD)");
+    println!();
+}
+
+fn make_target(device: &wgpu::Device) -> (wgpu::Texture, wgpu::TextureView) {
+    let tex = device.create_texture(&wgpu::TextureDescriptor {
+        label: Some("gpu_million_points-target"),
+        size: wgpu::Extent3d {
+            width: W,
+            height: H,
+            depth_or_array_layers: 1,
+        },
+        mip_level_count: 1,
+        sample_count: 1,
+        dimension: wgpu::TextureDimension::D2,
+        format: FMT,
+        usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
+        view_formats: &[],
+    });
+    let view = tex.create_view(&wgpu::TextureViewDescriptor::default());
+    (tex, view)
+}
+
+fn bench(hal: &Hal, pipelines: &GpuPipelines, view: &wgpu::TextureView, n: u32) -> f64 {
+    let mut samples: Vec<f64> = Vec::with_capacity(MEASURED);
+    for frame in 0..(WARMUP + MEASURED) {
+        let t0 = Instant::now();
+        let mut batch = GpuBatch::new(pipelines);
+        let mut state: u32 = 0x1234_5678;
+        for _ in 0..n {
+            state = state.wrapping_mul(1_664_525).wrapping_add(1_013_904_223);
+            let x = (state % W) as f32;
+            state = state.wrapping_mul(1_664_525).wrapping_add(1_013_904_223);
+            let y = (state % H) as f32;
+            state = state.wrapping_mul(1_664_525).wrapping_add(1_013_904_223);
+            let r = ((state >>  0) & 0xFF) as f32 / 255.0;
+            let g = ((state >>  8) & 0xFF) as f32 / 255.0;
+            let b = ((state >> 16) & 0xFF) as f32 / 255.0;
+            batch.add_rect(x, y, 1.2, 1.2, Color::new([r, g, b, 1.0]));
+        }
+        let mut encoder = hal.device.create_command_encoder(
+            &wgpu::CommandEncoderDescriptor {
+                label: Some("gpu_million_points-enc"),
+            },
+        );
+        batch.flush(
+            &hal.device,
+            &hal.queue,
+            &mut encoder,
+            view,
+            (W as f32, H as f32),
+            wgpu::LoadOp::Clear(wgpu::Color::BLACK),
+        );
+        hal.queue.submit(std::iter::once(encoder.finish()));
+        hal.device.poll(wgpu::Maintain::Wait);
+        let dt = t0.elapsed().as_secs_f64() * 1000.0;
+        if frame >= WARMUP {
+            samples.push(dt);
+        }
+    }
+    samples.sort_by(|a, b| a.partial_cmp(b).unwrap());
+    samples[samples.len() / 2]
+}
diff --git a/llimphi-raster/examples/render_node.rs b/llimphi-raster/examples/render_node.rs
new file mode 100644
index 0000000..dcfa31a
--- /dev/null
+++ b/llimphi-raster/examples/render_node.rs
@@ -0,0 +1,143 @@
+//! Fase 2 de Llimphi: un nodo (círculo + halo) renderizado por vello con AA
+//! perfecto sobre el swapchain de llimphi-hal.
+//!
+//! Corre con: `cargo run -p llimphi-raster --example render_node --release`.
+
+use std::sync::Arc;
+use std::time::Instant;
+
+use llimphi_hal::winit::application::ApplicationHandler;
+use llimphi_hal::winit::dpi::LogicalSize;
+use llimphi_hal::winit::event::WindowEvent;
+use llimphi_hal::winit::event_loop::{ActiveEventLoop, ControlFlow, EventLoop};
+use llimphi_hal::winit::window::{Window, WindowAttributes, WindowId};
+use llimphi_hal::{Hal, Surface, WinitSurface};
+use llimphi_raster::kurbo::{Affine, Circle, Stroke};
+use llimphi_raster::peniko::{color::palette, Color, Fill};
+use llimphi_raster::{vello, Renderer};
+
+struct State {
+    window: Arc<Window>,
+    hal: Hal,
+    surface: WinitSurface,
+    renderer: Renderer,
+    scene: vello::Scene,
+}
+
+struct App {
+    state: Option<State>,
+    started: Instant,
+}
+
+impl ApplicationHandler for App {
+    fn resumed(&mut self, event_loop: &ActiveEventLoop) {
+        if self.state.is_some() {
+            return;
+        }
+        let window = event_loop
+            .create_window(
+                WindowAttributes::default()
+                    .with_title("llimphi · render_node")
+                    .with_inner_size(LogicalSize::new(960u32, 540u32)),
+            )
+            .expect("create window");
+        let window = Arc::new(window);
+        let hal = pollster::block_on(Hal::new(None)).expect("hal");
+        let surface = WinitSurface::new(&hal, window.clone()).expect("surface");
+        let renderer = Renderer::new(&hal).expect("renderer");
+        window.request_redraw();
+        self.state = Some(State {
+            window,
+            hal,
+            surface,
+            renderer,
+            scene: vello::Scene::new(),
+        });
+    }
+
+    fn window_event(
+        &mut self,
+        event_loop: &ActiveEventLoop,
+        _id: WindowId,
+        event: WindowEvent,
+    ) {
+        let Some(state) = self.state.as_mut() else {
+            return;
+        };
+        match event {
+            WindowEvent::CloseRequested => event_loop.exit(),
+            WindowEvent::Resized(size) => {
+                state.surface.resize(size.width, size.height);
+                state.window.request_redraw();
+            }
+            WindowEvent::RedrawRequested => {
+                let frame = match state.surface.acquire() {
+                    Ok(f) => f,
+                    Err(_) => {
+                        let (w, h) = state.surface.size();
+                        state.surface.resize(w, h);
+                        state.window.request_redraw();
+                        return;
+                    }
+                };
+                let (w, h) = frame.size();
+                state.scene.reset();
+                build_node(&mut state.scene, w as f64, h as f64, self.started.elapsed().as_secs_f64());
+                if let Err(e) = state.renderer.render(
+                    &state.hal,
+                    &state.scene,
+                    &frame,
+                    palette::css::BLACK,
+                ) {
+                    eprintln!("render error: {e}");
+                }
+                state.surface.present(frame, &state.hal);
+                state.window.request_redraw();
+            }
+            _ => {}
+        }
+    }
+}
+
+/// Pinta un nodo centrado (círculo lleno + halo) que respira con `t`.
+fn build_node(scene: &mut vello::Scene, w: f64, h: f64, t: f64) {
+    let cx = w * 0.5;
+    let cy = h * 0.5;
+    let pulse = 1.0 + 0.06 * (t * 1.6).sin();
+    let r = (h.min(w) * 0.18) * pulse;
+
+    // Halo
+    scene.stroke(
+        &Stroke::new(2.0),
+        Affine::IDENTITY,
+        Color::from_rgba8(60, 120, 200, 180),
+        None,
+        &Circle::new((cx, cy), r * 1.35),
+    );
+    // Cuerpo
+    scene.fill(
+        Fill::NonZero,
+        Affine::IDENTITY,
+        Color::from_rgba8(90, 160, 230, 255),
+        None,
+        &Circle::new((cx, cy), r),
+    );
+    // Borde
+    scene.stroke(
+        &Stroke::new(3.0),
+        Affine::IDENTITY,
+        Color::from_rgba8(20, 50, 100, 255),
+        None,
+        &Circle::new((cx, cy), r),
+    );
+}
+
+fn main() {
+    let event_loop = EventLoop::new().expect("event loop");
+    event_loop.set_control_flow(ControlFlow::Poll);
+    let mut app = App {
+        state: None,
+        started: Instant::now(),
+    };
+    event_loop.run_app(&mut app).expect("run app");
+}
diff --git a/llimphi-raster/examples/spike_gpu_directo.rs b/llimphi-raster/examples/spike_gpu_directo.rs
new file mode 100644
index 0000000..5d82cbd
--- /dev/null
+++ b/llimphi-raster/examples/spike_gpu_directo.rs
@@ -0,0 +1,390 @@
+//! Spike Fase 0 — GPU directo vs vello.
+//!
+//! Compara el tiempo total CPU+GPU por frame para pintar N puntos en una
+//! textura `Rgba8Unorm` 1024×1024 con dos estrategias:
+//!
+//! - **Vello**: una llamada `Scene::fill(Rect 1×1)` por punto, luego
+//!   `vello::Renderer::render_to_texture`.
+//! - **GPU directo**: un pipeline `wgpu` con instanced quad. Cada punto es
+//!   una instancia `[x:f32, y:f32, rgba:u32]`. Una sola draw call.
+//!
+//! Tamaños: 100K, 500K, 1M puntos. 10 frames de warmup + 20 medidos por
+//! tamaño. Reporta mediana y factor de aceleración.
+//!
+//! Criterio de aceptación del SDD (`llimphi/SDD.md` §"GPU directo wgpu"):
+//! factor ≥ 5× a 500K → seguir con Fase 1. Si no, abortar.
+//!
+//! Corre con: `cargo run -p llimphi-raster --example spike_gpu_directo --release`.
+
+use std::io::Write;
+use std::time::Instant;
+
+use llimphi_hal::{wgpu, Hal};
+use llimphi_raster::{
+    kurbo::{Affine, Rect},
+    peniko::{color::palette, Color, Fill},
+    vello,
+};
+
+const W: u32 = 1024;
+const H: u32 = 1024;
+const TARGET_FORMAT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba8Unorm;
+const WARMUP_FRAMES: usize = 5;
+const MEASURED_FRAMES: usize = 15;
+// Vello revienta (SIGSEGV en `vello_encoding::path::flatten`) cuando la
+// escena pasa de ~200K paths con los `Limits::default()` que pide el HAL.
+// Es exactamente el techo del SDD §"GPU directo wgpu". Lo medimos hasta
+// donde vello aguanta; el lado directo se mide a sizes mucho mayores para
+// confirmar el régimen post-techo.
+const VELLO_SIZES: &[usize] = &[25_000, 50_000, 100_000, 200_000];
+const DIRECTO_SIZES: &[usize] = &[100_000, 500_000, 1_000_000, 5_000_000];
+
+fn main() {
+    let hal = pollster::block_on(Hal::new(None)).expect("hal");
+
+    // Textura destino compartida por ambos backends. STORAGE_BINDING para
+    // vello (compute), RENDER_ATTACHMENT para el pipeline directo. Idéntica
+    // al `intermediate` de `WinitSurface` (HAL real).
+    let (target, target_view) = create_target(&hal.device);
+
+    let mut vello_renderer = vello::Renderer::new(
+        &hal.device,
+        vello::RendererOptions {
+            use_cpu: false,
+            antialiasing_support: vello::AaSupport {
+                area: true,
+                msaa8: false,
+                msaa16: false,
+            },
+            num_init_threads: None,
+            pipeline_cache: None,
+        },
+    )
+    .expect("vello renderer");
+
+    let directo = DirectoPipeline::new(&hal.device);
+
+    println!();
+    println!("spike GPU directo — target {W}×{H} Rgba8Unorm, headless");
+    println!("warmup {WARMUP_FRAMES}, measured {MEASURED_FRAMES}");
+    println!();
+    println!("vello (scene.fill por punto):");
+    println!("  {:>10} | {:>14}", "N", "ms / frame");
+    println!("  {:->10} + {:->14}", "", "");
+    let mut vello_100k_ms: Option<f64> = None;
+    for &n in VELLO_SIZES {
+        let points = gen_points(n);
+        let ms = bench_vello(&hal, &mut vello_renderer, &target_view, &points);
+        println!("  {:>10} | {:>14.3}", n, ms);
+        let _ = std::io::stdout().flush();
+        if n == 100_000 {
+            vello_100k_ms = Some(ms);
+        }
+    }
+    println!();
+    println!("GPU directo (instanced quad, 1 draw call):");
+    println!("  {:>10} | {:>14}", "N", "ms / frame");
+    println!("  {:->10} + {:->14}", "", "");
+    let mut directo_100k_ms: Option<f64> = None;
+    for &n in DIRECTO_SIZES {
+        let points = gen_points(n);
+        let ms = bench_directo(&hal, &directo, &target_view, &points);
+        println!("  {:>10} | {:>14.3}", n, ms);
+        let _ = std::io::stdout().flush();
+        if n == 100_000 {
+            directo_100k_ms = Some(ms);
+        }
+    }
+    println!();
+    if let (Some(v), Some(d)) = (vello_100k_ms, directo_100k_ms) {
+        let factor = v / d;
+        let verdict = if factor >= 5.0 { "PASA" } else { "ABORTAR" };
+        println!(
+            "veredicto Fase 0 @ 100K: vello {:.2} ms / directo {:.2} ms = {:.2}× → {}",
+            v, d, factor, verdict
+        );
+        println!("(SDD pide ≥5× a 500K, pero vello no llega a 500K — techo medido <300K)");
+    }
+    println!();
+    // Mantener vivo el texture para evitar warnings.
+    drop(target);
+}
+
+fn create_target(device: &wgpu::Device) -> (wgpu::Texture, wgpu::TextureView) {
+    let tex = device.create_texture(&wgpu::TextureDescriptor {
+        label: Some("spike-target"),
+        size: wgpu::Extent3d {
+            width: W,
+            height: H,
+            depth_or_array_layers: 1,
+        },
+        mip_level_count: 1,
+        sample_count: 1,
+        dimension: wgpu::TextureDimension::D2,
+        format: TARGET_FORMAT,
+        usage: wgpu::TextureUsages::STORAGE_BINDING
+            | wgpu::TextureUsages::RENDER_ATTACHMENT
+            | wgpu::TextureUsages::TEXTURE_BINDING,
+        view_formats: &[],
+    });
+    let view = tex.create_view(&wgpu::TextureViewDescriptor::default());
+    (tex, view)
+}
+
+/// LCG numerical recipes — determinista, sin dependencias.
+fn gen_points(n: usize) -> Vec<(f32, f32, u32)> {
+    let mut state: u32 = 0x1234_5678;
+    let mut out = Vec::with_capacity(n);
+    for _ in 0..n {
+        state = state.wrapping_mul(1_664_525).wrapping_add(1_013_904_223);
+        let x = (state % W) as f32;
+        state = state.wrapping_mul(1_664_525).wrapping_add(1_013_904_223);
+        let y = (state % H) as f32;
+        state = state.wrapping_mul(1_664_525).wrapping_add(1_013_904_223);
+        // RGBA packed little-endian: R en byte bajo (queda igual a como lo
+        // lee el shader: `rgba & 0xFF` → R).
+        let rgba = (state & 0x00FF_FFFF) | 0xFF00_0000;
+        out.push((x, y, rgba));
+    }
+    out
+}
+
+fn bench_vello(
+    hal: &Hal,
+    renderer: &mut vello::Renderer,
+    target: &wgpu::TextureView,
+    points: &[(f32, f32, u32)],
+) -> f64 {
+    let mut scene = vello::Scene::new();
+    let mut samples: Vec<f64> = Vec::with_capacity(MEASURED_FRAMES);
+    for frame in 0..(WARMUP_FRAMES + MEASURED_FRAMES) {
+        let t0 = Instant::now();
+        scene.reset();
+        for &(x, y, rgba) in points {
+            let r = (rgba & 0xFF) as u8;
+            let g = ((rgba >> 8) & 0xFF) as u8;
+            let b = ((rgba >> 16) & 0xFF) as u8;
+            let a = ((rgba >> 24) & 0xFF) as u8;
+            let xf = x as f64;
+            let yf = y as f64;
+            scene.fill(
+                Fill::NonZero,
+                Affine::IDENTITY,
+                Color::from_rgba8(r, g, b, a),
+                None,
+                &Rect::new(xf, yf, xf + 1.0, yf + 1.0),
+            );
+        }
+        renderer
+            .render_to_texture(
+                &hal.device,
+                &hal.queue,
+                &scene,
+                target,
+                &vello::RenderParams {
+                    base_color: palette::css::BLACK,
+                    width: W,
+                    height: H,
+                    antialiasing_method: vello::AaConfig::Area,
+                },
+            )
+            .expect("vello render");
+        // Bloquear hasta que la GPU termine este frame. Sin esto medimos
+        // sólo el submit + queue building, no el trabajo real.
+        hal.device.poll(wgpu::Maintain::Wait);
+        let dt = t0.elapsed().as_secs_f64() * 1000.0;
+        if frame >= WARMUP_FRAMES {
+            samples.push(dt);
+        }
+    }
+    median(&mut samples)
+}
+
+fn bench_directo(
+    hal: &Hal,
+    pipe: &DirectoPipeline,
+    target: &wgpu::TextureView,
+    points: &[(f32, f32, u32)],
+) -> f64 {
+    // Buffer de instancias dimensionado para el peor caso.
+    let bytes_per_inst = std::mem::size_of::<[u32; 3]>(); // [x:f32, y:f32, rgba:u32] = 12B
+    let inst_buf = hal.device.create_buffer(&wgpu::BufferDescriptor {
+        label: Some("spike-directo-inst"),
+        size: (points.len() * bytes_per_inst) as u64,
+        usage: wgpu::BufferUsages::VERTEX | wgpu::BufferUsages::COPY_DST,
+        mapped_at_creation: false,
+    });
+
+    let mut samples: Vec<f64> = Vec::with_capacity(MEASURED_FRAMES);
+    for frame in 0..(WARMUP_FRAMES + MEASURED_FRAMES) {
+        let t0 = Instant::now();
+        // Empaquetar instancias: igual a la "scene build" del lado vello,
+        // para que la comparación sea fair (ambos parten de los mismos
+        // puntos crudos).
+        let bytes = pack_instances(points);
+        hal.queue.write_buffer(&inst_buf, 0, &bytes);
+
+        let mut encoder = hal.device.create_command_encoder(&wgpu::CommandEncoderDescriptor {
+            label: Some("spike-directo-enc"),
+        });
+        {
+            let mut pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+                label: Some("spike-directo-pass"),
+                color_attachments: &[Some(wgpu::RenderPassColorAttachment {
+                    view: target,
+                    resolve_target: None,
+                    ops: wgpu::Operations {
+                        load: wgpu::LoadOp::Clear(wgpu::Color::BLACK),
+                        store: wgpu::StoreOp::Store,
+                    },
+                })],
+                depth_stencil_attachment: None,
+                timestamp_writes: None,
+                occlusion_query_set: None,
+            });
+            pass.set_pipeline(&pipe.pipeline);
+            pass.set_vertex_buffer(0, inst_buf.slice(..));
+            // 6 vértices por instancia (2 tris = quad), N instancias.
+            pass.draw(0..6, 0..points.len() as u32);
+        }
+        hal.queue.submit(std::iter::once(encoder.finish()));
+        hal.device.poll(wgpu::Maintain::Wait);
+        let dt = t0.elapsed().as_secs_f64() * 1000.0;
+        if frame >= WARMUP_FRAMES {
+            samples.push(dt);
+        }
+    }
+    median(&mut samples)
+}
+
+fn pack_instances(points: &[(f32, f32, u32)]) -> Vec<u8> {
+    let mut v = Vec::with_capacity(points.len() * 12);
+    for &(x, y, rgba) in points {
+        v.extend_from_slice(&x.to_ne_bytes());
+        v.extend_from_slice(&y.to_ne_bytes());
+        v.extend_from_slice(&rgba.to_ne_bytes());
+    }
+    v
+}
+
+fn median(samples: &mut [f64]) -> f64 {
+    samples.sort_by(|a, b| a.partial_cmp(b).unwrap());
+    samples[samples.len() / 2]
+}
+
+/// Pipeline trivial para el bench: instanced quad sin texturas, color
+/// per-instance. No es código de producción — es el "mock GPU directo"
+/// que pide la Fase 0 del SDD para medir el techo alcanzable.
+struct DirectoPipeline {
+    pipeline: wgpu::RenderPipeline,
+}
+
+impl DirectoPipeline {
+    fn new(device: &wgpu::Device) -> Self {
+        let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
+            label: Some("spike-directo-shader"),
+            source: wgpu::ShaderSource::Wgsl(WGSL.into()),
+        });
+        let layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+            label: Some("spike-directo-layout"),
+            bind_group_layouts: &[],
+            push_constant_ranges: &[],
+        });
+        let pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+            label: Some("spike-directo-pipeline"),
+            layout: Some(&layout),
+            vertex: wgpu::VertexState {
+                module: &shader,
+                entry_point: Some("vs"),
+                compilation_options: Default::default(),
+                buffers: &[wgpu::VertexBufferLayout {
+                    array_stride: 12,
+                    step_mode: wgpu::VertexStepMode::Instance,
+                    attributes: &[
+                        wgpu::VertexAttribute {
+                            format: wgpu::VertexFormat::Float32x2,
+                            offset: 0,
+                            shader_location: 0,
+                        },
+                        wgpu::VertexAttribute {
+                            format: wgpu::VertexFormat::Uint32,
+                            offset: 8,
+                            shader_location: 1,
+                        },
+                    ],
+                }],
+            },
+            primitive: wgpu::PrimitiveState {
+                topology: wgpu::PrimitiveTopology::TriangleList,
+                strip_index_format: None,
+                front_face: wgpu::FrontFace::Ccw,
+                cull_mode: None,
+                unclipped_depth: false,
+                polygon_mode: wgpu::PolygonMode::Fill,
+                conservative: false,
+            },
+            depth_stencil: None,
+            multisample: wgpu::MultisampleState::default(),
+            fragment: Some(wgpu::FragmentState {
+                module: &shader,
+                entry_point: Some("fs"),
+                compilation_options: Default::default(),
+                targets: &[Some(wgpu::ColorTargetState {
+                    format: TARGET_FORMAT,
+                    blend: None,
+                    write_mask: wgpu::ColorWrites::ALL,
+                })],
+            }),
+            multiview: None,
+            cache: None,
+        });
+        Self { pipeline }
+    }
+}
+
+const WGSL: &str = r#"
+struct Inst {
+    @location(0) xy: vec2<f32>,
+    @location(1) rgba: u32,
+};
+
+struct V2F {
+    @builtin(position) pos: vec4<f32>,
+    @location(0) color: vec4<f32>,
+};
+
+const W: f32 = 1024.0;
+const H: f32 = 1024.0;
+
+@vertex
+fn vs(@builtin(vertex_index) vid: u32, inst: Inst) -> V2F {
+    // Quad 1.5px alrededor de (inst.xy + 0.5). Pixel-centered.
+    var corners = array<vec2<f32>, 6>(
+        vec2<f32>(-0.75, -0.75),
+        vec2<f32>( 0.75, -0.75),
+        vec2<f32>( 0.75,  0.75),
+        vec2<f32>(-0.75, -0.75),
+        vec2<f32>( 0.75,  0.75),
+        vec2<f32>(-0.75,  0.75),
+    );
+    let off = corners[vid];
+    let px = inst.xy + vec2<f32>(0.5, 0.5) + off;
+    // pixel → NDC, Y invertido (vello / textura framebuffer).
+    let ndc = vec2<f32>(px.x / W * 2.0 - 1.0, 1.0 - px.y / H * 2.0);
+
+    let r = f32( inst.rgba        & 0xFFu) / 255.0;
+    let g = f32((inst.rgba >>  8u) & 0xFFu) / 255.0;
+    let b = f32((inst.rgba >> 16u) & 0xFFu) / 255.0;
+    let a = f32((inst.rgba >> 24u) & 0xFFu) / 255.0;
+
+    var out: V2F;
+    out.pos = vec4<f32>(ndc, 0.0, 1.0);
+    out.color = vec4<f32>(r, g, b, a);
+    return out;
+}
+
+@fragment
+fn fs(in: V2F) -> @location(0) vec4<f32> {
+    return in.color;
+}
+"#;
diff --git a/llimphi-raster/src/gpu.rs b/llimphi-raster/src/gpu.rs
new file mode 100644
index 0000000..d25885b
--- /dev/null
+++ b/llimphi-raster/src/gpu.rs
@@ -0,0 +1,553 @@
+//! Backend GPU directo (Fases 2 + 3 del SDD §"GPU directo wgpu").
+//!
+//! Tres pipelines `wgpu` cacheadas en [`GpuPipelines`] (lines / tris /
+//! rects) + un acumulador [`GpuBatch`] que las apps usan por frame para
+//! emitir centenares de miles a millones de primitivos en una draw call
+//! por tipo, sin pasar por vello.
+//!
+//! Diseño minimal Fase 2/3:
+//!
+//! - Vertex format triángulos: `[x: f32, y: f32, rgba: u32]` (12 B/vert).
+//! - Instance format líneas: `[x0, y0, x1, y1, rgba]` (20 B/seg).
+//! - Instance format rects:  `[x, y, w, h, rgba]` (20 B/rect).
+//! - Sin texturas. Sin AA por shader — quien necesite AA fino sigue por
+//!   vello. Para puntos densos el "popping" no se nota.
+//! - Blending alfa habilitado: el alpha del color es respetado.
+//! - El viewport `(width, height)` se pasa al flush y va en un uniform —
+//!   los shaders convierten pixel → NDC ahí.
+//!
+//! Cache de pipelines: una sola instancia de `GpuPipelines` por
+//! `(device, color_format)`. Construirla compila los 3 pipelines en
+//! caliente (~ms en hardware moderno). Los callers la mantienen viva
+//! entre frames (en su Model o vía `OnceLock`).
+//!
+//! Grow strategy: `flush` crea un buffer por tipo no vacío en el
+//! mismo frame. Sin reuso entre frames — Fase 4 (`GpuSceneCanvas`)
+//! introducirá el `GpuBuffers` persistente que dobla capacidad si
+//! aparece la necesidad.
+
+use llimphi_hal::wgpu;
+use vello::peniko::Color;
+
+/// Pipelines cacheadas. Crear uno por proceso (o por surface format).
+///
+/// Para uso típico via [`GpuBatch`] los campos no se tocan directo. La
+/// API pública existe para callers avanzados que quieran montar su propio
+/// buffer persistente (datos que no cambian por frame: starfield Gaia,
+/// particles iniciales, viewport estático) y emitir draw calls
+/// manualmente reusando estas pipelines.
+///
+/// Layouts:
+/// - Vertex buffer triángulos: `[x: f32, y: f32, rgba: u32]` (12 B/vert).
+/// - Instance buffer rects:    `[x, y, w, h, rgba]`           (20 B/inst).
+/// - Instance buffer líneas:   `[x0, y0, x1, y1, rgba]`       (20 B/inst).
+/// - Bind group 0 binding 0: uniform `{viewport: vec2<f32>, line_width: f32, _pad: f32}` (16 B).
+pub struct GpuPipelines {
+    pub lines: wgpu::RenderPipeline,
+    pub tris: wgpu::RenderPipeline,
+    pub rects: wgpu::RenderPipeline,
+    pub bind_layout: wgpu::BindGroupLayout,
+}
+
+impl GpuPipelines {
+    /// Compila los 3 pipelines apuntando al `color_format` del target
+    /// que recibirán en `flush` (el de la intermediate de `WinitSurface`,
+    /// normalmente `Rgba8Unorm`).
+    pub fn new(device: &wgpu::Device, color_format: wgpu::TextureFormat) -> Self {
+        let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
+            label: Some("llimphi-raster-gpu-shader"),
+            source: wgpu::ShaderSource::Wgsl(WGSL.into()),
+        });
+
+        let bind_layout = device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
+            label: Some("llimphi-raster-gpu-bgl"),
+            entries: &[wgpu::BindGroupLayoutEntry {
+                binding: 0,
+                visibility: wgpu::ShaderStages::VERTEX,
+                ty: wgpu::BindingType::Buffer {
+                    ty: wgpu::BufferBindingType::Uniform,
+                    has_dynamic_offset: false,
+                    min_binding_size: None,
+                },
+                count: None,
+            }],
+        });
+
+        let pipeline_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+            label: Some("llimphi-raster-gpu-pl"),
+            bind_group_layouts: &[&bind_layout],
+            push_constant_ranges: &[],
+        });
+
+        let color_targets = [Some(wgpu::ColorTargetState {
+            format: color_format,
+            blend: Some(wgpu::BlendState::ALPHA_BLENDING),
+            write_mask: wgpu::ColorWrites::ALL,
+        })];
+
+        // Triángulos (vertex buffer plano, color per-vertex).
+        let tris = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+            label: Some("llimphi-raster-gpu-tris"),
+            layout: Some(&pipeline_layout),
+            vertex: wgpu::VertexState {
+                module: &shader,
+                entry_point: Some("vs_tris"),
+                compilation_options: Default::default(),
+                buffers: &[wgpu::VertexBufferLayout {
+                    array_stride: 12,
+                    step_mode: wgpu::VertexStepMode::Vertex,
+                    attributes: &[
+                        wgpu::VertexAttribute {
+                            format: wgpu::VertexFormat::Float32x2,
+                            offset: 0,
+                            shader_location: 0,
+                        },
+                        wgpu::VertexAttribute {
+                            format: wgpu::VertexFormat::Uint32,
+                            offset: 8,
+                            shader_location: 1,
+                        },
+                    ],
+                }],
+            },
+            primitive: tri_primitive(),
+            depth_stencil: None,
+            multisample: wgpu::MultisampleState::default(),
+            fragment: Some(wgpu::FragmentState {
+                module: &shader,
+                entry_point: Some("fs"),
+                compilation_options: Default::default(),
+                targets: &color_targets,
+            }),
+            multiview: None,
+            cache: None,
+        });
+
+        // Rects (instanced quad).
+        let rects = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+            label: Some("llimphi-raster-gpu-rects"),
+            layout: Some(&pipeline_layout),
+            vertex: wgpu::VertexState {
+                module: &shader,
+                entry_point: Some("vs_rects"),
+                compilation_options: Default::default(),
+                buffers: &[wgpu::VertexBufferLayout {
+                    array_stride: 20,
+                    step_mode: wgpu::VertexStepMode::Instance,
+                    attributes: &[
+                        wgpu::VertexAttribute {
+                            format: wgpu::VertexFormat::Float32x2,
+                            offset: 0,
+                            shader_location: 0,
+                        },
+                        wgpu::VertexAttribute {
+                            format: wgpu::VertexFormat::Float32x2,
+                            offset: 8,
+                            shader_location: 1,
+                        },
+                        wgpu::VertexAttribute {
+                            format: wgpu::VertexFormat::Uint32,
+                            offset: 16,
+                            shader_location: 2,
+                        },
+                    ],
+                }],
+            },
+            primitive: tri_primitive(),
+            depth_stencil: None,
+            multisample: wgpu::MultisampleState::default(),
+            fragment: Some(wgpu::FragmentState {
+                module: &shader,
+                entry_point: Some("fs"),
+                compilation_options: Default::default(),
+                targets: &color_targets,
+            }),
+            multiview: None,
+            cache: None,
+        });
+
+        // Líneas con grosor: cada segmento es una instancia de 20 B; el
+        // VS expande a un quad de 6 vértices perpendicular al segmento
+        // usando un grosor uniforme en píxeles (vienen del uniform).
+        let lines = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+            label: Some("llimphi-raster-gpu-lines"),
+            layout: Some(&pipeline_layout),
+            vertex: wgpu::VertexState {
+                module: &shader,
+                entry_point: Some("vs_lines"),
+                compilation_options: Default::default(),
+                buffers: &[wgpu::VertexBufferLayout {
+                    array_stride: 20,
+                    step_mode: wgpu::VertexStepMode::Instance,
+                    attributes: &[
+                        wgpu::VertexAttribute {
+                            format: wgpu::VertexFormat::Float32x4,
+                            offset: 0,
+                            shader_location: 0,
+                        },
+                        wgpu::VertexAttribute {
+                            format: wgpu::VertexFormat::Uint32,
+                            offset: 16,
+                            shader_location: 1,
+                        },
+                    ],
+                }],
+            },
+            primitive: tri_primitive(),
+            depth_stencil: None,
+            multisample: wgpu::MultisampleState::default(),
+            fragment: Some(wgpu::FragmentState {
+                module: &shader,
+                entry_point: Some("fs"),
+                compilation_options: Default::default(),
+                targets: &color_targets,
+            }),
+            multiview: None,
+            cache: None,
+        });
+
+        Self {
+            lines,
+            tris,
+            rects,
+            bind_layout,
+        }
+    }
+}
+
+fn tri_primitive() -> wgpu::PrimitiveState {
+    wgpu::PrimitiveState {
+        topology: wgpu::PrimitiveTopology::TriangleList,
+        strip_index_format: None,
+        front_face: wgpu::FrontFace::Ccw,
+        cull_mode: None,
+        unclipped_depth: false,
+        polygon_mode: wgpu::PolygonMode::Fill,
+        conservative: false,
+    }
+}
+
+/// Acumulador de primitivas por frame. Construir → `add_*` → `flush`.
+pub struct GpuBatch<'a> {
+    pipelines: &'a GpuPipelines,
+    line_verts: Vec<u8>,
+    tri_verts: Vec<u8>,
+    rect_insts: Vec<u8>,
+    line_width: f32,
+    line_count: u32,
+    tri_vert_count: u32,
+    rect_count: u32,
+}
+
+impl<'a> GpuBatch<'a> {
+    pub fn new(pipelines: &'a GpuPipelines) -> Self {
+        Self {
+            pipelines,
+            line_verts: Vec::new(),
+            tri_verts: Vec::new(),
+            rect_insts: Vec::new(),
+            line_width: 1.0,
+            line_count: 0,
+            tri_vert_count: 0,
+            rect_count: 0,
+        }
+    }
+
+    /// Grosor de las próximas líneas (en pixels del frame, sin AA).
+    /// Se aplica a todas las líneas del batch — el lado bueno de una
+    /// sola draw call es que sólo hay un grosor "vivo" por flush.
+    pub fn line_width(&mut self, w: f32) {
+        self.line_width = w;
+    }
+
+    /// Añade un segmento de línea como instancia.
+    pub fn add_line(&mut self, p0: (f32, f32), p1: (f32, f32), color: Color) {
+        let rgba = pack_rgba(color);
+        self.line_verts.extend_from_slice(&p0.0.to_ne_bytes());
+        self.line_verts.extend_from_slice(&p0.1.to_ne_bytes());
+        self.line_verts.extend_from_slice(&p1.0.to_ne_bytes());
+        self.line_verts.extend_from_slice(&p1.1.to_ne_bytes());
+        self.line_verts.extend_from_slice(&rgba.to_ne_bytes());
+        self.line_count += 1;
+    }
+
+    /// Añade una polilínea como secuencia de segmentos individuales
+    /// (line-list). Para N puntos emite N-1 instancias.
+    pub fn add_polyline(&mut self, points: &[(f32, f32)], color: Color) {
+        if points.len() < 2 {
+            return;
+        }
+        for w in points.windows(2) {
+            self.add_line(w[0], w[1], color);
+        }
+    }
+
+    /// Añade un triángulo con color por vértice.
+    pub fn add_tri(
+        &mut self,
+        a: (f32, f32),
+        b: (f32, f32),
+        c: (f32, f32),
+        ca: Color,
+        cb: Color,
+        cc: Color,
+    ) {
+        self.push_tri_vert(a, ca);
+        self.push_tri_vert(b, cb);
+        self.push_tri_vert(c, cc);
+    }
+
+    fn push_tri_vert(&mut self, p: (f32, f32), color: Color) {
+        let rgba = pack_rgba(color);
+        self.tri_verts.extend_from_slice(&p.0.to_ne_bytes());
+        self.tri_verts.extend_from_slice(&p.1.to_ne_bytes());
+        self.tri_verts.extend_from_slice(&rgba.to_ne_bytes());
+        self.tri_vert_count += 1;
+    }
+
+    /// Añade un triangle list crudo `[(x, y); 3*N]` con un mismo color
+    /// uniforme por vértice. Útil para teselaciones precomputadas
+    /// (contornos, polígonos rellenos).
+    pub fn add_tri_list(&mut self, verts: &[(f32, f32)], color: Color) {
+        for &p in verts {
+            self.push_tri_vert(p, color);
+        }
+    }
+
+    /// Añade un rectángulo lleno como instancia (sin radio — para
+    /// rounded rects sigue por vello).
+    pub fn add_rect(&mut self, x: f32, y: f32, w: f32, h: f32, color: Color) {
+        let rgba = pack_rgba(color);
+        self.rect_insts.extend_from_slice(&x.to_ne_bytes());
+        self.rect_insts.extend_from_slice(&y.to_ne_bytes());
+        self.rect_insts.extend_from_slice(&w.to_ne_bytes());
+        self.rect_insts.extend_from_slice(&h.to_ne_bytes());
+        self.rect_insts.extend_from_slice(&rgba.to_ne_bytes());
+        self.rect_count += 1;
+    }
+
+    /// Cuenta total de primitivas pendientes (útil para benches).
+    pub fn primitive_count(&self) -> u32 {
+        self.line_count + self.rect_count + self.tri_vert_count / 3
+    }
+
+    /// Despacha las primitivas acumuladas como 1 draw call por tipo
+    /// no vacío contra `view`. `viewport` es el tamaño en pixels del
+    /// target (lo usa el VS para mapear pixel → NDC).
+    ///
+    /// `load_op` decide si la pasada conserva el contenido previo
+    /// (`Load`, lo normal cuando vello ya pintó algo) o limpia
+    /// (`Clear(color)`). Apps que llamen a `GpuBatch` desde
+    /// `gpu_paint_with` quieren `Load`.
+    pub fn flush(
+        self,
+        device: &wgpu::Device,
+        queue: &wgpu::Queue,
+        encoder: &mut wgpu::CommandEncoder,
+        view: &wgpu::TextureView,
+        viewport: (f32, f32),
+        load_op: wgpu::LoadOp<wgpu::Color>,
+    ) {
+        let total = self.line_count + self.tri_vert_count + self.rect_count;
+        if total == 0 {
+            return;
+        }
+
+        // Uniforms: [viewport.w, viewport.h, line_width, _pad].
+        let u_data = [viewport.0, viewport.1, self.line_width, 0.0];
+        let mut u_bytes = Vec::with_capacity(16);
+        for v in u_data {
+            u_bytes.extend_from_slice(&v.to_ne_bytes());
+        }
+        let uniforms = device.create_buffer(&wgpu::BufferDescriptor {
+            label: Some("llimphi-raster-gpu-u"),
+            size: 16,
+            usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
+            mapped_at_creation: false,
+        });
+        queue.write_buffer(&uniforms, 0, &u_bytes);
+
+        let bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
+            label: Some("llimphi-raster-gpu-bg"),
+            layout: &self.pipelines.bind_layout,
+            entries: &[wgpu::BindGroupEntry {
+                binding: 0,
+                resource: uniforms.as_entire_binding(),
+            }],
+        });
+
+        // Buffers por tipo (sólo si hay datos).
+        let lines_buf = (!self.line_verts.is_empty()).then(|| {
+            let b = device.create_buffer(&wgpu::BufferDescriptor {
+                label: Some("llimphi-raster-gpu-lines-buf"),
+                size: self.line_verts.len() as u64,
+                usage: wgpu::BufferUsages::VERTEX | wgpu::BufferUsages::COPY_DST,
+                mapped_at_creation: false,
+            });
+            queue.write_buffer(&b, 0, &self.line_verts);
+            b
+        });
+        let tris_buf = (!self.tri_verts.is_empty()).then(|| {
+            let b = device.create_buffer(&wgpu::BufferDescriptor {
+                label: Some("llimphi-raster-gpu-tris-buf"),
+                size: self.tri_verts.len() as u64,
+                usage: wgpu::BufferUsages::VERTEX | wgpu::BufferUsages::COPY_DST,
+                mapped_at_creation: false,
+            });
+            queue.write_buffer(&b, 0, &self.tri_verts);
+            b
+        });
+        let rects_buf = (!self.rect_insts.is_empty()).then(|| {
+            let b = device.create_buffer(&wgpu::BufferDescriptor {
+                label: Some("llimphi-raster-gpu-rects-buf"),
+                size: self.rect_insts.len() as u64,
+                usage: wgpu::BufferUsages::VERTEX | wgpu::BufferUsages::COPY_DST,
+                mapped_at_creation: false,
+            });
+            queue.write_buffer(&b, 0, &self.rect_insts);
+            b
+        });
+
+        let mut pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+            label: Some("llimphi-raster-gpu-pass"),
+            color_attachments: &[Some(wgpu::RenderPassColorAttachment {
+                view,
+                resolve_target: None,
+                ops: wgpu::Operations {
+                    load: load_op,
+                    store: wgpu::StoreOp::Store,
+                },
+            })],
+            depth_stencil_attachment: None,
+            timestamp_writes: None,
+            occlusion_query_set: None,
+        });
+        pass.set_bind_group(0, &bind_group, &[]);
+
+        // Orden de draws: rects (fondo) → tris → lines (encima). Match
+        // de la convención usual "fill abajo, stroke arriba".
+        if let Some(buf) = rects_buf.as_ref() {
+            pass.set_pipeline(&self.pipelines.rects);
+            pass.set_vertex_buffer(0, buf.slice(..));
+            pass.draw(0..6, 0..self.rect_count);
+        }
+        if let Some(buf) = tris_buf.as_ref() {
+            pass.set_pipeline(&self.pipelines.tris);
+            pass.set_vertex_buffer(0, buf.slice(..));
+            pass.draw(0..self.tri_vert_count, 0..1);
+        }
+        if let Some(buf) = lines_buf.as_ref() {
+            pass.set_pipeline(&self.pipelines.lines);
+            pass.set_vertex_buffer(0, buf.slice(..));
+            pass.draw(0..6, 0..self.line_count);
+        }
+    }
+}
+
+/// Empaqueta un `peniko::Color` a u32 little-endian RGBA8.
+/// El shader lo lee como `inst.rgba` y separa bytes — debe coincidir
+/// con la convención del WGSL (`r = rgba & 0xFF`, etc.).
+fn pack_rgba(c: Color) -> u32 {
+    let [r, g, b, a] = c.to_rgba8().to_u8_array();
+    (r as u32) | ((g as u32) << 8) | ((b as u32) << 16) | ((a as u32) << 24)
+}
+
+const WGSL: &str = r#"
+struct Uniforms {
+    viewport:   vec2<f32>,
+    line_width: f32,
+    _pad:       f32,
+};
+
+@group(0) @binding(0) var<uniform> u: Uniforms;
+
+struct V2F {
+    @builtin(position) pos: vec4<f32>,
+    @location(0) color: vec4<f32>,
+};
+
+fn unpack_rgba(c: u32) -> vec4<f32> {
+    let r = f32( c        & 0xFFu) / 255.0;
+    let g = f32((c >>  8u) & 0xFFu) / 255.0;
+    let b = f32((c >> 16u) & 0xFFu) / 255.0;
+    let a = f32((c >> 24u) & 0xFFu) / 255.0;
+    return vec4<f32>(r, g, b, a);
+}
+
+fn px_to_ndc(p: vec2<f32>) -> vec2<f32> {
+    return vec2<f32>(p.x / u.viewport.x * 2.0 - 1.0, 1.0 - p.y / u.viewport.y * 2.0);
+}
+
+// -------- triángulos: 1 vértice = (xy, rgba) --------
+
+@vertex
+fn vs_tris(@location(0) xy: vec2<f32>, @location(1) rgba: u32) -> V2F {
+    var out: V2F;
+    out.pos = vec4<f32>(px_to_ndc(xy), 0.0, 1.0);
+    out.color = unpack_rgba(rgba);
+    return out;
+}
+
+// -------- rects: 1 instancia = (xy, wh, rgba), 6 vértices/quad --------
+
+@vertex
+fn vs_rects(
+    @builtin(vertex_index) vid: u32,
+    @location(0) inst_xy: vec2<f32>,
+    @location(1) inst_wh: vec2<f32>,
+    @location(2) inst_rgba: u32,
+) -> V2F {
+    var corners = array<vec2<f32>, 6>(
+        vec2<f32>(0.0, 0.0),
+        vec2<f32>(1.0, 0.0),
+        vec2<f32>(1.0, 1.0),
+        vec2<f32>(0.0, 0.0),
+        vec2<f32>(1.0, 1.0),
+        vec2<f32>(0.0, 1.0),
+    );
+    let local = corners[vid];
+    let px = inst_xy + local * inst_wh;
+    var out: V2F;
+    out.pos = vec4<f32>(px_to_ndc(px), 0.0, 1.0);
+    out.color = unpack_rgba(inst_rgba);
+    return out;
+}
+
+// -------- líneas: 1 instancia = (p0xy, p1xy, rgba), expandida a quad ----
+
+@vertex
+fn vs_lines(
+    @builtin(vertex_index) vid: u32,
+    @location(0) seg: vec4<f32>,
+    @location(1) rgba: u32,
+) -> V2F {
+    // Quad perpendicular al segmento, grosor uniforme `u.line_width` px.
+    // vid 0..5 mapea a los 6 vértices del quad (2 tris).
+    let p0 = seg.xy;
+    let p1 = seg.zw;
+    let dir = normalize(p1 - p0);
+    let n = vec2<f32>(-dir.y, dir.x);
+    let half_w = u.line_width * 0.5;
+    let offsets = array<vec2<f32>, 6>(
+        vec2<f32>(0.0, -half_w),  // p0 -n
+        vec2<f32>(0.0,  half_w),  // p0 +n
+        vec2<f32>(1.0,  half_w),  // p1 +n
+        vec2<f32>(0.0, -half_w),  // p0 -n
+        vec2<f32>(1.0,  half_w),  // p1 +n
+        vec2<f32>(1.0, -half_w),  // p1 -n
+    );
+    let o = offsets[vid];
+    let along = mix(p0, p1, o.x);
+    let across = n * o.y;
+    let px = along + across;
+    var out: V2F;
+    out.pos = vec4<f32>(px_to_ndc(px), 0.0, 1.0);
+    out.color = unpack_rgba(rgba);
+    return out;
+}
+
+@fragment
+fn fs(in: V2F) -> @location(0) vec4<f32> {
+    return in.color;
+}
+"#;
diff --git a/llimphi-raster/src/lib.rs b/llimphi-raster/src/lib.rs
new file mode 100644
index 0000000..cf63a08
--- /dev/null
+++ b/llimphi-raster/src/lib.rs
@@ -0,0 +1,120 @@
+//! llimphi-raster — Brocha Matemática.
+//!
+//! Traduce primitivas vectoriales (líneas, curvas de Bézier, texto) a
+//! píxeles via Compute Shaders. Backend: `vello`.
+//!
+//! Punto de entrada: [`Renderer`]. Recibe una [`vello::Scene`] y la pinta
+//! sobre un [`llimphi_hal::Frame`].
+
+use llimphi_hal::{Frame, Hal};
+pub use vello;
+pub use vello::kurbo;
+pub use vello::peniko;
+
+pub mod gpu;
+pub use gpu::{GpuBatch, GpuPipelines};
+
+/// Errores del rasterizador.
+#[derive(Debug)]
+pub enum RasterError {
+    Init(String),
+    Render(String),
+}
+
+impl std::fmt::Display for RasterError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Init(s) => write!(f, "vello init: {s}"),
+            Self::Render(s) => write!(f, "vello render: {s}"),
+        }
+    }
+}
+
+impl std::error::Error for RasterError {}
+
+/// Rasterizador vectorial. Una instancia por surface (porque vello cachea
+/// resources contra un `surface_format` específico).
+pub struct Renderer {
+    inner: vello::Renderer,
+}
+
+impl Renderer {
+    /// Inicializa el rasterizador. Vello acepta cualquier textura compatible
+    /// (Rgba8Unorm / Bgra8Unorm) en `render`, así que no se fija un formato
+    /// en construcción.
+    ///
+    /// **`antialiasing_support`**: pedimos `area` solamente, no `all()`.
+    /// `area` es el único método que `render()` usa (`AaConfig::Area`
+    /// fijo). Pedir `all()` haría a vello compilar también pipelines
+    /// para `msaa8` y `msaa16` que nunca se invocan — en Mali-G57 eso
+    /// triplica el cold-start (medido: 3.7s vs ~1.2s). Si alguna app
+    /// futura necesita MSAA, agregamos un constructor explícito.
+    ///
+    /// **`num_init_threads: None`**: vello paraleliza la compilación
+    /// de shaders en `None` → todos los CPU cores. Mali-G57 viene en
+    /// SoCs octa-core ARM; con 1 thread tardamos 2.0s, con 8 esperamos
+    /// ~400-600ms. La compilación de shaders es 100% CPU (Rust →
+    /// SPIR-V), el GPU no participa, así que multi-thread escala
+    /// casi linealmente hasta saturar el queue del Naga compiler.
+    pub fn new(hal: &Hal) -> Result<Self, RasterError> {
+        let inner = vello::Renderer::new(
+            &hal.device,
+            vello::RendererOptions {
+                use_cpu: false,
+                antialiasing_support: vello::AaSupport {
+                    area: true,
+                    msaa8: false,
+                    msaa16: false,
+                },
+                num_init_threads: None,
+                pipeline_cache: None,
+            },
+        )
+        .map_err(|e| RasterError::Init(e.to_string()))?;
+        Ok(Self { inner })
+    }
+
+    /// Renderiza `scene` sobre `frame` limpiando con `base_color`. AA fija
+    /// en area-sampling (precisión Δ < 10⁻⁹ rad del SDD).
+    pub fn render(
+        &mut self,
+        hal: &Hal,
+        scene: &vello::Scene,
+        frame: &Frame,
+        base_color: peniko::Color,
+    ) -> Result<(), RasterError> {
+        let (width, height) = frame.size();
+        self.render_to_view(hal, scene, frame.view(), width, height, base_color)
+    }
+
+    /// Como [`render`](Self::render) pero contra una vista de textura
+    /// explícita (mismo formato/tamaño que la intermedia). Lo usa el
+    /// compositor de overlay de `llimphi-ui` para rasterizar la capa de
+    /// overlay sobre fondo transparente en su propia textura. Ojo:
+    /// `render_to_texture` **limpia** el target con `base_color` y escribe
+    /// todos los píxeles — no compone sobre contenido previo.
+    pub fn render_to_view(
+        &mut self,
+        hal: &Hal,
+        scene: &vello::Scene,
+        view: &llimphi_hal::wgpu::TextureView,
+        width: u32,
+        height: u32,
+        base_color: peniko::Color,
+    ) -> Result<(), RasterError> {
+        self.inner
+            .render_to_texture(
+                &hal.device,
+                &hal.queue,
+                scene,
+                view,
+                &vello::RenderParams {
+                    base_color,
+                    width,
+                    height,
+                    antialiasing_method: vello::AaConfig::Area,
+                },
+            )
+            .map_err(|e| RasterError::Render(e.to_string()))
+    }
+}
diff --git a/llimphi-raster/tests/gpu_batch_smoke.rs b/llimphi-raster/tests/gpu_batch_smoke.rs
new file mode 100644
index 0000000..0241dc0
--- /dev/null
+++ b/llimphi-raster/tests/gpu_batch_smoke.rs
@@ -0,0 +1,128 @@
+//! Smoke test del backend GPU directo (`llimphi_raster::gpu`).
+//!
+//! No verifica píxeles — eso requiere AA y un patrón conocido, y por
+//! ahora el módulo no garantiza pixel-exactness. Sí verifica que:
+//!
+//! - `GpuPipelines::new` compila los 3 shaders WGSL sin errores de naga.
+//! - `GpuBatch` acepta líneas, triángulos y rects mezclados sin pánico.
+//! - `flush` ejecuta sin errores wgpu y la `Maintain::Wait` retorna
+//!   (= la GPU/llvmpipe terminó las pasadas).
+//!
+//! Corre en cualquier adapter wgpu disponible — en CI sin GPU usa
+//! llvmpipe, donde igual valida el ensamblado y la sintaxis WGSL.
+
+use llimphi_hal::{wgpu, Hal};
+use llimphi_raster::gpu::{GpuBatch, GpuPipelines};
+use llimphi_raster::peniko::Color;
+
+const W: u32 = 256;
+const H: u32 = 256;
+const FMT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba8Unorm;
+
+fn make_target(device: &wgpu::Device) -> (wgpu::Texture, wgpu::TextureView) {
+    let tex = device.create_texture(&wgpu::TextureDescriptor {
+        label: Some("smoke-target"),
+        size: wgpu::Extent3d {
+            width: W,
+            height: H,
+            depth_or_array_layers: 1,
+        },
+        mip_level_count: 1,
+        sample_count: 1,
+        dimension: wgpu::TextureDimension::D2,
+        format: FMT,
+        usage: wgpu::TextureUsages::RENDER_ATTACHMENT | wgpu::TextureUsages::COPY_SRC,
+        view_formats: &[],
+    });
+    let view = tex.create_view(&wgpu::TextureViewDescriptor::default());
+    (tex, view)
+}
+
+#[test]
+fn batch_with_rects_lines_tris_does_not_panic() {
+    let hal = pollster::block_on(Hal::new(None)).expect("hal");
+    let pipelines = GpuPipelines::new(&hal.device, FMT);
+    let (_tex, view) = make_target(&hal.device);
+
+    let mut batch = GpuBatch::new(&pipelines);
+    batch.line_width(2.0);
+
+    // Cuadrícula 8×8 de rects con color que varía.
+    for j in 0..8 {
+        for i in 0..8 {
+            let x = 8.0 + i as f32 * 30.0;
+            let y = 8.0 + j as f32 * 30.0;
+            let c = Color::from_rgba8(
+                (i * 32) as u8,
+                (j * 32) as u8,
+                100,
+                255,
+            );
+            batch.add_rect(x, y, 24.0, 24.0, c);
+        }
+    }
+
+    // Diagonal de líneas.
+    for k in 0..16 {
+        batch.add_line(
+            (0.0, k as f32 * 16.0),
+            (W as f32, (k + 1) as f32 * 16.0),
+            Color::from_rgba8(220, 220, 250, 180),
+        );
+    }
+
+    // Triángulo grande con color por vértice.
+    batch.add_tri(
+        (128.0, 32.0),
+        (64.0, 220.0),
+        (220.0, 220.0),
+        Color::from_rgba8(255, 80, 80, 200),
+        Color::from_rgba8(80, 255, 80, 200),
+        Color::from_rgba8(80, 80, 255, 200),
+    );
+
+    assert!(batch.primitive_count() > 0, "batch debería tener primitivas");
+
+    let mut encoder = hal
+        .device
+        .create_command_encoder(&wgpu::CommandEncoderDescriptor {
+            label: Some("smoke-enc"),
+        });
+    batch.flush(
+        &hal.device,
+        &hal.queue,
+        &mut encoder,
+        &view,
+        (W as f32, H as f32),
+        wgpu::LoadOp::Clear(wgpu::Color::BLACK),
+    );
+    hal.queue.submit(std::iter::once(encoder.finish()));
+    hal.device.poll(wgpu::Maintain::Wait);
+}
+
+#[test]
+fn empty_batch_flush_is_no_op() {
+    let hal = pollster::block_on(Hal::new(None)).expect("hal");
+    let pipelines = GpuPipelines::new(&hal.device, FMT);
+    let (_tex, view) = make_target(&hal.device);
+
+    let batch = GpuBatch::new(&pipelines);
+    assert_eq!(batch.primitive_count(), 0);
+
+    let mut encoder = hal
+        .device
+        .create_command_encoder(&wgpu::CommandEncoderDescriptor {
+            label: Some("smoke-empty-enc"),
+        });
+    // Con batch vacío, flush no debe crear render pass ni buffers.
+    batch.flush(
+        &hal.device,
+        &hal.queue,
+        &mut encoder,
+        &view,
+        (W as f32, H as f32),
+        wgpu::LoadOp::Clear(wgpu::Color::TRANSPARENT),
+    );
+    hal.queue.submit(std::iter::once(encoder.finish()));
+    hal.device.poll(wgpu::Maintain::Wait);
+}
diff --git a/llimphi-surface/Cargo.toml b/llimphi-surface/Cargo.toml
new file mode 100644
index 0000000..af35105
--- /dev/null
+++ b/llimphi-surface/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-surface"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+
+[dependencies]
+llimphi-hal = { path = "../llimphi-hal" }
+llimphi-ui = { path = "../llimphi-ui" }
+parking_lot = { workspace = true }
diff --git a/llimphi-surface/src/lib.rs b/llimphi-surface/src/lib.rs
new file mode 100644
index 0000000..06279c8
--- /dev/null
+++ b/llimphi-surface/src/lib.rs
@@ -0,0 +1,404 @@
+//! llimphi-surface — superficies externas dentro del bucle Elm.
+//!
+//! Un `ExternalSurface` es una textura RGBA8 que vive en GPU y se pinta
+//! sobre un rect del frame Llimphi cada vez que la app lo expone vía
+//! `View::gpu_paint_with`. La fuente de bytes corre afuera del bucle
+//! Elm: un decoder de video, un capture de cámara, un raster de PDF,
+//! una textura raw producida por otro motor — cualquier productor que
+//! genere RGBA puede empujar frames con [`ExternalSurface::upload`] y
+//! ver el resultado en la próxima pasada de raster.
+//!
+//! El crate provee:
+//!
+//! - [`ExternalSurface`]: dueño de la textura + render pipeline + bind
+//!   group. `upload(rgba, w, h)` sube bytes y recrea la textura si
+//!   `w`/`h` cambiaron.
+//! - [`ExternalSurface::view`]: helper que construye un [`View`] con
+//!   `gpu_paint_with` ya conectado. La app sólo elige el `Style` del
+//!   nodo (qué porción del layout ocupa).
+//!
+//! ## Diseño
+//!
+//! El pipeline es un textured-quad clásico: dos triángulos cubren el
+//! rect destino, el fragment shader samplea la textura externa con
+//! sampler bilineal. Las coordenadas NDC del quad se computan en GPU
+//! a partir de `(rect, viewport)` que viajan por uniform — por eso
+//! el callback necesita el `viewport` que `llimphi-ui` empezó a
+//! propagar en `GpuPaintFn`.
+//!
+//! La textura intermedia donde Llimphi pinta vello es `Rgba8Unorm`
+//! (ver `llimphi-hal::INTERMEDIATE_FORMAT`). El pipeline emite
+//! `Rgba8Unorm` también — el target del render pass es esa misma
+//! intermedia con `LoadOp::Load`, así el fondo vello queda preservado.
+
+use std::sync::Arc;
+
+use llimphi_hal::wgpu;
+use llimphi_ui::{PaintRect, View};
+use parking_lot::Mutex;
+
+const TARGET_FORMAT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba8Unorm;
+const SOURCE_FORMAT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba8Unorm;
+
+struct Inner {
+    device: wgpu::Device,
+    queue: wgpu::Queue,
+    pipeline: wgpu::RenderPipeline,
+    bgl: wgpu::BindGroupLayout,
+    sampler: wgpu::Sampler,
+    uniforms: wgpu::Buffer,
+    // Textura + bind group recreados cuando cambia (w, h) del frame de
+    // entrada. Empieza en (1, 1) con un pixel transparente para que el
+    // pipeline funcione antes del primer `upload`.
+    tex: wgpu::Texture,
+    bind_group: wgpu::BindGroup,
+    tex_size: (u32, u32),
+}
+
+/// Superficie externa: textura GPU + pipeline que la blittea al rect
+/// que ocupe en el árbol Llimphi. Clonar es barato (Arc interno).
+#[derive(Clone)]
+pub struct ExternalSurface {
+    inner: Arc<Mutex<Inner>>,
+}
+
+impl ExternalSurface {
+    /// Construye la surface usando el `Device`/`Queue` del Hal de la app.
+    /// La textura arranca en 1×1 transparente; el primer
+    /// [`Self::upload`] la redimensiona al tamaño real del frame.
+    pub fn new(device: &wgpu::Device, queue: &wgpu::Queue) -> Self {
+        let bgl = device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
+            label: Some("llimphi-surface-bgl"),
+            entries: &[
+                wgpu::BindGroupLayoutEntry {
+                    binding: 0,
+                    visibility: wgpu::ShaderStages::VERTEX_FRAGMENT,
+                    ty: wgpu::BindingType::Buffer {
+                        ty: wgpu::BufferBindingType::Uniform,
+                        has_dynamic_offset: false,
+                        min_binding_size: None,
+                    },
+                    count: None,
+                },
+                wgpu::BindGroupLayoutEntry {
+                    binding: 1,
+                    visibility: wgpu::ShaderStages::FRAGMENT,
+                    ty: wgpu::BindingType::Texture {
+                        sample_type: wgpu::TextureSampleType::Float { filterable: true },
+                        view_dimension: wgpu::TextureViewDimension::D2,
+                        multisampled: false,
+                    },
+                    count: None,
+                },
+                wgpu::BindGroupLayoutEntry {
+                    binding: 2,
+                    visibility: wgpu::ShaderStages::FRAGMENT,
+                    ty: wgpu::BindingType::Sampler(wgpu::SamplerBindingType::Filtering),
+                    count: None,
+                },
+            ],
+        });
+
+        let pipeline_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+            label: Some("llimphi-surface-pl"),
+            bind_group_layouts: &[&bgl],
+            push_constant_ranges: &[],
+        });
+
+        let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
+            label: Some("llimphi-surface-shader"),
+            source: wgpu::ShaderSource::Wgsl(WGSL.into()),
+        });
+
+        let pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+            label: Some("llimphi-surface-pipe"),
+            layout: Some(&pipeline_layout),
+            vertex: wgpu::VertexState {
+                module: &shader,
+                entry_point: Some("vs"),
+                compilation_options: Default::default(),
+                buffers: &[],
+            },
+            primitive: wgpu::PrimitiveState {
+                topology: wgpu::PrimitiveTopology::TriangleList,
+                ..Default::default()
+            },
+            depth_stencil: None,
+            multisample: wgpu::MultisampleState::default(),
+            fragment: Some(wgpu::FragmentState {
+                module: &shader,
+                entry_point: Some("fs"),
+                compilation_options: Default::default(),
+                targets: &[Some(wgpu::ColorTargetState {
+                    format: TARGET_FORMAT,
+                    blend: Some(wgpu::BlendState::ALPHA_BLENDING),
+                    write_mask: wgpu::ColorWrites::ALL,
+                })],
+            }),
+            multiview: None,
+            cache: None,
+        });
+
+        let sampler = device.create_sampler(&wgpu::SamplerDescriptor {
+            label: Some("llimphi-surface-sampler"),
+            address_mode_u: wgpu::AddressMode::ClampToEdge,
+            address_mode_v: wgpu::AddressMode::ClampToEdge,
+            address_mode_w: wgpu::AddressMode::ClampToEdge,
+            mag_filter: wgpu::FilterMode::Linear,
+            min_filter: wgpu::FilterMode::Linear,
+            mipmap_filter: wgpu::FilterMode::Nearest,
+            ..Default::default()
+        });
+
+        // Uniforms: 8 floats — rect (x, y, w, h) + viewport (vw, vh, _, _).
+        let uniforms = device.create_buffer(&wgpu::BufferDescriptor {
+            label: Some("llimphi-surface-uniforms"),
+            size: 32,
+            usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
+            mapped_at_creation: false,
+        });
+
+        let (tex, bind_group) =
+            make_texture_and_bg(device, queue, &bgl, &uniforms, &sampler, 1, 1, &[0, 0, 0, 0]);
+
+        Self {
+            inner: Arc::new(Mutex::new(Inner {
+                device: device.clone(),
+                queue: queue.clone(),
+                pipeline,
+                bgl,
+                sampler,
+                uniforms,
+                tex,
+                bind_group,
+                tex_size: (1, 1),
+            })),
+        }
+    }
+
+    /// Sube `rgba` (8 bits por canal, premultiplicado o no — el blend
+    /// usa straight alpha) como nuevo contenido de la surface. Si
+    /// `(width, height)` difiere del tamaño actual, recrea la textura
+    /// y el bind group. `rgba.len()` debe ser exactamente
+    /// `width * height * 4`.
+    pub fn upload(&self, rgba: &[u8], width: u32, height: u32) {
+        let mut inner = self.inner.lock();
+        debug_assert_eq!(rgba.len(), (width as usize) * (height as usize) * 4);
+        if inner.tex_size != (width, height) {
+            let (tex, bg) = make_texture_and_bg(
+                &inner.device,
+                &inner.queue,
+                &inner.bgl,
+                &inner.uniforms,
+                &inner.sampler,
+                width,
+                height,
+                rgba,
+            );
+            inner.tex = tex;
+            inner.bind_group = bg;
+            inner.tex_size = (width, height);
+        } else {
+            inner.queue.write_texture(
+                wgpu::TexelCopyTextureInfo {
+                    texture: &inner.tex,
+                    mip_level: 0,
+                    origin: wgpu::Origin3d::ZERO,
+                    aspect: wgpu::TextureAspect::All,
+                },
+                rgba,
+                wgpu::TexelCopyBufferLayout {
+                    offset: 0,
+                    bytes_per_row: Some(width * 4),
+                    rows_per_image: Some(height),
+                },
+                wgpu::Extent3d {
+                    width,
+                    height,
+                    depth_or_array_layers: 1,
+                },
+            );
+        }
+    }
+
+    /// Tamaño actual de la textura interna (último upload o (1,1) si
+    /// nunca se subió nada).
+    pub fn size(&self) -> (u32, u32) {
+        self.inner.lock().tex_size
+    }
+
+    /// Encola el draw del quad que pinta la surface en `dst_view` dentro
+    /// de `rect`, escalando la textura para cubrir el rect entero.
+    /// Llamado típicamente desde el callback de `View::gpu_paint_with`.
+    pub fn blit(
+        &self,
+        queue: &wgpu::Queue,
+        encoder: &mut wgpu::CommandEncoder,
+        dst_view: &wgpu::TextureView,
+        rect: PaintRect,
+        viewport: (u32, u32),
+    ) {
+        let inner = self.inner.lock();
+        let uniforms = [
+            rect.x,
+            rect.y,
+            rect.w,
+            rect.h,
+            viewport.0 as f32,
+            viewport.1 as f32,
+            0.0,
+            0.0,
+        ];
+        let mut bytes = [0u8; 32];
+        for (i, v) in uniforms.iter().enumerate() {
+            bytes[i * 4..(i + 1) * 4].copy_from_slice(&v.to_ne_bytes());
+        }
+        queue.write_buffer(&inner.uniforms, 0, &bytes);
+
+        let mut pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+            label: Some("llimphi-surface-pass"),
+            color_attachments: &[Some(wgpu::RenderPassColorAttachment {
+                view: dst_view,
+                resolve_target: None,
+                ops: wgpu::Operations {
+                    load: wgpu::LoadOp::Load,
+                    store: wgpu::StoreOp::Store,
+                },
+            })],
+            depth_stencil_attachment: None,
+            timestamp_writes: None,
+            occlusion_query_set: None,
+        });
+        pass.set_pipeline(&inner.pipeline);
+        pass.set_bind_group(0, &inner.bind_group, &[]);
+        pass.draw(0..6, 0..1);
+    }
+
+    /// Construye un `View` cuyo `gpu_paint_with` blittea la surface al
+    /// rect que le asigne el layout. La app sólo escoge el `Style`
+    /// (tamaño, flex_grow…). El `Msg` está libre — la View no emite
+    /// eventos por sí sola.
+    pub fn view<Msg>(&self, style: llimphi_ui::llimphi_layout::taffy::Style) -> View<Msg>
+    where
+        Msg: Clone + Send + Sync + 'static,
+    {
+        let this = self.clone();
+        View::new(style).gpu_paint_with(move |_device, queue, encoder, view, rect, viewport| {
+            this.blit(queue, encoder, view, rect, viewport);
+        })
+    }
+}
+
+fn make_texture_and_bg(
+    device: &wgpu::Device,
+    queue: &wgpu::Queue,
+    bgl: &wgpu::BindGroupLayout,
+    uniforms: &wgpu::Buffer,
+    sampler: &wgpu::Sampler,
+    width: u32,
+    height: u32,
+    initial_rgba: &[u8],
+) -> (wgpu::Texture, wgpu::BindGroup) {
+    let tex = device.create_texture(&wgpu::TextureDescriptor {
+        label: Some("llimphi-surface-tex"),
+        size: wgpu::Extent3d {
+            width,
+            height,
+            depth_or_array_layers: 1,
+        },
+        mip_level_count: 1,
+        sample_count: 1,
+        dimension: wgpu::TextureDimension::D2,
+        format: SOURCE_FORMAT,
+        usage: wgpu::TextureUsages::TEXTURE_BINDING | wgpu::TextureUsages::COPY_DST,
+        view_formats: &[],
+    });
+    queue.write_texture(
+        wgpu::TexelCopyTextureInfo {
+            texture: &tex,
+            mip_level: 0,
+            origin: wgpu::Origin3d::ZERO,
+            aspect: wgpu::TextureAspect::All,
+        },
+        initial_rgba,
+        wgpu::TexelCopyBufferLayout {
+            offset: 0,
+            bytes_per_row: Some(width * 4),
+            rows_per_image: Some(height),
+        },
+        wgpu::Extent3d {
+            width,
+            height,
+            depth_or_array_layers: 1,
+        },
+    );
+    let view = tex.create_view(&wgpu::TextureViewDescriptor::default());
+    let bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
+        label: Some("llimphi-surface-bg"),
+        layout: bgl,
+        entries: &[
+            wgpu::BindGroupEntry {
+                binding: 0,
+                resource: uniforms.as_entire_binding(),
+            },
+            wgpu::BindGroupEntry {
+                binding: 1,
+                resource: wgpu::BindingResource::TextureView(&view),
+            },
+            wgpu::BindGroupEntry {
+                binding: 2,
+                resource: wgpu::BindingResource::Sampler(sampler),
+            },
+        ],
+    });
+    (tex, bind_group)
+}
+
+const WGSL: &str = r#"
+struct Uniforms {
+    rect: vec4<f32>,     // x, y, w, h en pixels del frame
+    viewport: vec4<f32>, // vw, vh, _, _
+};
+
+@group(0) @binding(0) var<uniform> u: Uniforms;
+@group(0) @binding(1) var tex: texture_2d<f32>;
+@group(0) @binding(2) var samp: sampler;
+
+struct V2F {
+    @builtin(position) pos: vec4<f32>,
+    @location(0) uv: vec2<f32>,
+};
+
+@vertex
+fn vs(@builtin(vertex_index) vid: u32) -> V2F {
+    // Dos triángulos en UV-space, recorridos CCW.
+    var uvs = array<vec2<f32>, 6>(
+        vec2<f32>(0.0, 0.0),
+        vec2<f32>(1.0, 0.0),
+        vec2<f32>(1.0, 1.0),
+        vec2<f32>(0.0, 0.0),
+        vec2<f32>(1.0, 1.0),
+        vec2<f32>(0.0, 1.0),
+    );
+    let uv = uvs[vid];
+
+    let px = u.rect.x + uv.x * u.rect.z;
+    let py = u.rect.y + uv.y * u.rect.w;
+
+    // NDC: x ∈ [-1, 1] sin flip, y flipeado (en pantalla y-down).
+    let ndc = vec2<f32>(
+        px / u.viewport.x * 2.0 - 1.0,
+        1.0 - py / u.viewport.y * 2.0,
+    );
+
+    var out: V2F;
+    out.pos = vec4<f32>(ndc, 0.0, 1.0);
+    out.uv = uv;
+    return out;
+}
+
+@fragment
+fn fs(in: V2F) -> @location(0) vec4<f32> {
+    return textureSample(tex, samp, in.uv);
+}
+"#;
diff --git a/llimphi-text/Cargo.toml b/llimphi-text/Cargo.toml
new file mode 100644
index 0000000..7fbb288
--- /dev/null
+++ b/llimphi-text/Cargo.toml
@@ -0,0 +1,24 @@
+[package]
+name = "llimphi-text"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+
+# vello directo (no llimphi-raster): el motor de texto sólo necesita
+# Scene/peniko/kurbo para construir y pintar layouts — nada del Renderer ni
+# de llimphi-hal. Eso mantiene llimphi-text (y quien lo use: el compositor)
+# libre de winit, condición para correr sobre el framebuffer de wawa.
+[dependencies]
+vello = { workspace = true }
+parley = { workspace = true }
+
+[dev-dependencies]
+llimphi-raster = { path = "../llimphi-raster" }
+llimphi-hal = { path = "../llimphi-hal" }
+pollster = { workspace = true }
+
+[[example]]
+name = "hello_text"
+path = "examples/hello_text.rs"
diff --git a/llimphi-text/LEEME.md b/llimphi-text/LEEME.md
new file mode 100644
index 0000000..82ff585
--- /dev/null
+++ b/llimphi-text/LEEME.md
@@ -0,0 +1,9 @@
+# llimphi-text
+
+> Shaping + fonts de [llimphi](../README.md).
+
+Capa de tipografía. Fontdue para subset minimal; HarfBuzz cuando se requiere shaping complejo (árabe, devanagari, ligaduras). Cache de glyphs rasterizados; medición precisa para layout (`measure(text, font, size) → (w, h)`).
+
+## Deps
+
+- `fontdue`, `harfbuzz_rs` (feature)
diff --git a/llimphi-text/README.md b/llimphi-text/README.md
new file mode 100644
index 0000000..19f9c2d
--- /dev/null
+++ b/llimphi-text/README.md
@@ -0,0 +1,9 @@
+# llimphi-text
+
+> Shaping + fonts of [llimphi](../README.md).
+
+Typography layer. Fontdue for minimal subset; HarfBuzz when complex shaping is required (Arabic, Devanagari, ligatures). Cache of rasterized glyphs; precise measurement for layout (`measure(text, font, size) → (w, h)`).
+
+## Deps
+
+- `fontdue`, `harfbuzz_rs` (feature)
diff --git a/llimphi-text/assets/DejaVuSans.ttf b/llimphi-text/assets/DejaVuSans.ttf
new file mode 100644
index 0000000..5267218
Binary files /dev/null and b/llimphi-text/assets/DejaVuSans.ttf differ
diff --git a/llimphi-text/examples/hello_text.rs b/llimphi-text/examples/hello_text.rs
new file mode 100644
index 0000000..7cc8614
--- /dev/null
+++ b/llimphi-text/examples/hello_text.rs
@@ -0,0 +1,167 @@
+//! Texto via parley sobre vello: párrafo wrappeable + shaping (kerning,
+//! ligatures, bidi, fallback CJK/emoji).
+//!
+//! Corre con: `cargo run -p llimphi-text --example hello_text --release`.
+
+use std::sync::Arc;
+
+use llimphi_hal::winit::application::ApplicationHandler;
+use llimphi_hal::winit::dpi::LogicalSize;
+use llimphi_hal::winit::event::WindowEvent;
+use llimphi_hal::winit::event_loop::{ActiveEventLoop, ControlFlow, EventLoop};
+use llimphi_hal::winit::window::{Window, WindowAttributes, WindowId};
+use llimphi_hal::{Hal, Surface, WinitSurface};
+use llimphi_text::peniko::{color::palette, Color};
+use llimphi_text::{draw_block, Alignment, TextBlock, Typesetter};
+
+const PARRAFO: &str = "Llimphi pinta vector preciso sobre el silicio: \
+geometrías exactas, sin cajas negras. شكراً 你好 — el shaping de parley \
+maneja kerning, ligaduras y fallback CJK/Arabic en la misma línea.";
+
+struct State {
+    window: Arc<Window>,
+    hal: Hal,
+    surface: WinitSurface,
+    renderer: llimphi_raster::Renderer,
+    scene: llimphi_raster::vello::Scene,
+    typesetter: Typesetter,
+}
+
+struct App {
+    state: Option<State>,
+}
+
+impl ApplicationHandler for App {
+    fn resumed(&mut self, event_loop: &ActiveEventLoop) {
+        if self.state.is_some() {
+            return;
+        }
+        let window = event_loop
+            .create_window(
+                WindowAttributes::default()
+                    .with_title("llimphi · hello_text")
+                    .with_inner_size(LogicalSize::new(960u32, 540u32)),
+            )
+            .expect("create window");
+        let window = Arc::new(window);
+        let hal = pollster::block_on(Hal::new(None)).expect("hal");
+        let surface = WinitSurface::new(&hal, window.clone()).expect("surface");
+        let renderer = llimphi_raster::Renderer::new(&hal).expect("renderer");
+        let typesetter = Typesetter::new();
+        window.request_redraw();
+        self.state = Some(State {
+            window,
+            hal,
+            surface,
+            renderer,
+            scene: llimphi_raster::vello::Scene::new(),
+            typesetter,
+        });
+    }
+
+    fn window_event(
+        &mut self,
+        event_loop: &ActiveEventLoop,
+        _id: WindowId,
+        event: WindowEvent,
+    ) {
+        let Some(state) = self.state.as_mut() else {
+            return;
+        };
+        match event {
+            WindowEvent::CloseRequested => event_loop.exit(),
+            WindowEvent::Resized(size) => {
+                state.surface.resize(size.width, size.height);
+                state.window.request_redraw();
+            }
+            WindowEvent::RedrawRequested => {
+                let frame = match state.surface.acquire() {
+                    Ok(f) => f,
+                    Err(_) => {
+                        let (w, h) = state.surface.size();
+                        state.surface.resize(w, h);
+                        state.window.request_redraw();
+                        return;
+                    }
+                };
+                let (w, _h) = frame.size();
+                let margin_x = 64.0_f64;
+                let margin_y = 64.0_f64;
+                let inner_w = (w as f32 - 2.0 * margin_x as f32).max(100.0);
+                state.scene.reset();
+
+                // Título centrado
+                draw_block(
+                    &mut state.scene,
+                    &mut state.typesetter,
+                    &TextBlock {
+                        text: "Llimphi",
+                        size_px: 96.0,
+                        color: Color::from_rgba8(220, 230, 240, 255),
+                        origin: (margin_x, margin_y),
+                        max_width: Some(inner_w),
+                        alignment: Alignment::Center,
+                        line_height: 1.0,
+                    
+                        italic: false,
+                        font_family: None,
+                    },
+                );
+
+                // Subtítulo centrado
+                draw_block(
+                    &mut state.scene,
+                    &mut state.typesetter,
+                    &TextBlock {
+                        text: "motor gráfico soberano · parley + vello",
+                        size_px: 20.0,
+                        color: Color::from_rgba8(140, 160, 180, 255),
+                        origin: (margin_x, margin_y + 110.0),
+                        max_width: Some(inner_w),
+                        alignment: Alignment::Center,
+                        line_height: 1.0,
+                    
+                        italic: false,
+                        font_family: None,
+                    },
+                );
+
+                // Párrafo justificado con wrap
+                draw_block(
+                    &mut state.scene,
+                    &mut state.typesetter,
+                    &TextBlock {
+                        text: PARRAFO,
+                        size_px: 22.0,
+                        color: Color::from_rgba8(200, 210, 220, 255),
+                        origin: (margin_x, margin_y + 170.0),
+                        max_width: Some(inner_w),
+                        alignment: Alignment::Justify,
+                        line_height: 1.4,
+                    
+                        italic: false,
+                        font_family: None,
+                    },
+                );
+
+                if let Err(e) = state.renderer.render(
+                    &state.hal,
+                    &state.scene,
+                    &frame,
+                    palette::css::BLACK,
+                ) {
+                    eprintln!("render error: {e}");
+                }
+                state.surface.present(frame, &state.hal);
+            }
+            _ => {}
+        }
+    }
+}
+
+fn main() {
+    let event_loop = EventLoop::new().expect("event loop");
+    event_loop.set_control_flow(ControlFlow::Wait);
+    let mut app = App { state: None };
+    event_loop.run_app(&mut app).expect("run app");
+}
diff --git a/llimphi-text/src/lib.rs b/llimphi-text/src/lib.rs
new file mode 100644
index 0000000..730cf96
--- /dev/null
+++ b/llimphi-text/src/lib.rs
@@ -0,0 +1,359 @@
+//! llimphi-text — Texto sobre vello vía parley.
+//!
+//! parley hace shaping completo (bidi, ligatures, kerning), line break y
+//! alineación; fontique resuelve fuentes del sistema con fallback CJK/emoji.
+//! Aquí lo envolvemos en una API mínima centrada en el caso común: un
+//! bloque de texto con color uniforme, ancho máximo opcional y alineación.
+
+use vello::peniko::{Brush, Color};
+
+pub use parley;
+pub use vello;
+pub use vello::peniko;
+
+/// Estado compartido del motor de texto. Una instancia por proceso es lo
+/// recomendado: `FontContext` cachea la base de fuentes y `LayoutContext`
+/// reutiliza allocaciones entre layouts.
+pub struct Typesetter {
+    font_cx: parley::FontContext,
+    layout_cx: parley::LayoutContext<()>,
+    /// Contexto separado para layouts multicolor (`Brush` por rango). El
+    /// brush genérico de parley no puede ser `()` y `RunBrush` a la vez en
+    /// el mismo `LayoutContext`, así que mantenemos uno por sabor.
+    runs_cx: parley::LayoutContext<RunBrush>,
+}
+
+impl Default for Typesetter {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+/// DejaVu Sans embebida como **fallback universal de símbolos**. El motor
+/// confía en las fuentes del sistema vía fontique, pero muchas instalaciones
+/// (p. ej. solo Liberation/Adwaita) carecen de glyphs para flechas (`→`),
+/// formas geométricas (`● ▶`), dingbats (`✓ ✗ ✎`), avisos (`⚠`) o astro
+/// (`♈ ☉ ☽`) — y entonces parley pinta el "tofu" (□). DejaVu cubre todo ese
+/// rango; la registramos y la enganchamos al fallback del script `Common`
+/// (`Zyyy`), que es donde Unicode clasifica esos símbolos. Así cualquier app
+/// Llimphi deja de mostrar cuadrados sin tocar una línea de su código.
+/// Licencia: Bitstream Vera + Arev (libre, redistribuible).
+const DEJAVU_SANS: &[u8] = include_bytes!("../assets/DejaVuSans.ttf");
+
+impl Typesetter {
+    pub fn new() -> Self {
+        let mut font_cx = parley::FontContext::new();
+        Self::install_symbol_fallback(&mut font_cx);
+        Self {
+            font_cx,
+            layout_cx: parley::LayoutContext::new(),
+            runs_cx: parley::LayoutContext::new(),
+        }
+    }
+
+    /// Registra DejaVu Sans y la apila como último recurso para los símbolos
+    /// del script `Common` (flechas, geométricos, dingbats, astro…). Ver la
+    /// nota de [`DEJAVU_SANS`]. Best-effort: si algo falla, el texto sigue
+    /// funcionando con las fuentes del sistema (solo reaparecería el tofu).
+    fn install_symbol_fallback(font_cx: &mut parley::FontContext) {
+        use parley::fontique::Blob;
+        let blob = Blob::new(std::sync::Arc::new(DEJAVU_SANS));
+        let registered = font_cx.collection.register_fonts(blob, None);
+        if let Some((family_id, _)) = registered.first() {
+            // `Zyyy` (Common) es el script de la inmensa mayoría de los
+            // símbolos que daban tofu; lo apilamos al final del fallback.
+            font_cx
+                .collection
+                .append_fallbacks("Zyyy", std::iter::once(*family_id));
+        }
+    }
+
+    /// Acceso al `FontContext` por si se necesita registrar fuentes extra
+    /// o cambiar la stack de fallback.
+    pub fn font_context_mut(&mut self) -> &mut parley::FontContext {
+        &mut self.font_cx
+    }
+
+    /// Construye y resuelve un `parley::Layout`. Aplica `font_size`,
+    /// `line_height` (multiplicador del font_size), `max_width` (line
+    /// break), y `alignment`. `italic`=true selecciona la variante
+    /// italic/oblique de la fuente activa (vía `parley::FontStyle`).
+    pub fn layout(
+        &mut self,
+        text: &str,
+        size_px: f32,
+        max_width: Option<f32>,
+        alignment: Alignment,
+        line_height: f32,
+        italic: bool,
+        font_family: Option<&str>,
+    ) -> parley::Layout<()> {
+        let mut builder =
+            self.layout_cx
+                .ranged_builder(&mut self.font_cx, text, 1.0, true);
+        builder.push_default(parley::StyleProperty::FontSize(size_px));
+        builder.push_default(parley::StyleProperty::LineHeight(line_height));
+        if italic {
+            builder.push_default(parley::StyleProperty::FontStyle(
+                parley::FontStyle::Italic,
+            ));
+        }
+        if let Some(ff) = font_family {
+            // parley::FontStack::Source acepta CSS-like syntax
+            // (`"Helvetica", sans-serif`).
+            builder.push_default(parley::StyleProperty::FontStack(
+                parley::FontStack::Source(std::borrow::Cow::Borrowed(ff)),
+            ));
+        }
+        let mut layout = builder.build(text);
+        layout.break_all_lines(max_width);
+        layout.align(
+            max_width,
+            alignment.into(),
+            parley::AlignmentOptions::default(),
+        );
+        layout
+    }
+
+    /// Construye un layout **multicolor** en una sola pasada de shaping:
+    /// `default_color` cubre todo el texto y cada `(start_byte, end_byte,
+    /// color)` lo sobreescribe en su rango (offsets en **bytes**, no chars —
+    /// la convención de parley). Pensado para syntax highlighting: shapear
+    /// la línea entera una vez con un color por token, en vez de un layout
+    /// por token. Sin wrap (`max_width = None`); el caller posiciona la línea.
+    pub fn layout_runs(
+        &mut self,
+        text: &str,
+        size_px: f32,
+        default_color: Color,
+        runs: &[(usize, usize, Color)],
+        alignment: Alignment,
+        line_height: f32,
+    ) -> parley::Layout<RunBrush> {
+        let mut builder = self
+            .runs_cx
+            .ranged_builder(&mut self.font_cx, text, 1.0, true);
+        builder.push_default(parley::StyleProperty::FontSize(size_px));
+        builder.push_default(parley::StyleProperty::LineHeight(line_height));
+        builder.push_default(parley::StyleProperty::Brush(RunBrush(default_color)));
+        let len = text.len();
+        for &(start, end, color) in runs {
+            if start < end && end <= len {
+                builder.push(parley::StyleProperty::Brush(RunBrush(color)), start..end);
+            }
+        }
+        let mut layout = builder.build(text);
+        layout.break_all_lines(None);
+        layout.align(None, alignment.into(), parley::AlignmentOptions::default());
+        layout
+    }
+}
+
+/// Brush por-run para texto multicolor. Newtype sobre [`Color`] porque
+/// parley exige que el brush genérico implemente `Default` (que `Color` no
+/// garantiza); aquí proveemos uno explícito (negro opaco) que nunca se ve
+/// en la práctica: todo run lleva su color o el `default_color` del bloque.
+#[derive(Clone, Copy, PartialEq, Debug)]
+pub struct RunBrush(pub Color);
+
+impl Default for RunBrush {
+    fn default() -> Self {
+        RunBrush(Color::from_rgba8(0, 0, 0, 255))
+    }
+}
+
+/// Alineación horizontal del bloque dentro de su ancho máximo.
+#[derive(Debug, Clone, Copy)]
+pub enum Alignment {
+    Start,
+    Center,
+    End,
+    Justify,
+}
+
+impl From<Alignment> for parley::Alignment {
+    fn from(a: Alignment) -> Self {
+        match a {
+            Alignment::Start => parley::Alignment::Start,
+            Alignment::Center => parley::Alignment::Middle,
+            Alignment::End => parley::Alignment::End,
+            Alignment::Justify => parley::Alignment::Justified,
+        }
+    }
+}
+
+/// Especificación de un bloque de texto a rasterizar.
+pub struct TextBlock<'a> {
+    pub text: &'a str,
+    pub size_px: f32,
+    pub color: Color,
+    /// Esquina superior-izquierda del bloque (no el baseline — parley se
+    /// encarga del baseline internamente).
+    pub origin: (f64, f64),
+    pub max_width: Option<f32>,
+    pub alignment: Alignment,
+    /// Múltiplo del font_size (1.0 = compacto, 1.3 = cómodo).
+    pub line_height: f32,
+    /// `true` → fuerza variante italic/oblique en la fuente activa.
+    pub italic: bool,
+    /// CSS-style `font-family` string. `None` = sans-serif default.
+    pub font_family: Option<String>,
+}
+
+impl<'a> TextBlock<'a> {
+    /// Constructor simple para una línea sin wrap.
+    pub fn simple(text: &'a str, size_px: f32, color: Color, origin: (f64, f64)) -> Self {
+        Self {
+            text,
+            size_px,
+            color,
+            origin,
+            max_width: None,
+            alignment: Alignment::Start,
+            line_height: 1.0,
+            italic: false,
+            font_family: None,
+        }
+    }
+}
+
+/// Medidas resultantes de un layout.
+#[derive(Debug, Clone, Copy)]
+pub struct Measurement {
+    pub width: f32,
+    pub height: f32,
+}
+
+/// Construye el layout (shaping + line break + alineación) listo para medir
+/// y/o pintar. Usá esta API cuando necesitás el alto **antes** de elegir el
+/// origen (p. ej. centrado vertical) y no querés repetir el shaping en el
+/// `draw`: medís sobre el layout retornado y luego lo pasás a
+/// [`draw_layout`].
+pub fn layout_block(ts: &mut Typesetter, block: &TextBlock<'_>) -> parley::Layout<()> {
+    ts.layout(
+        block.text,
+        block.size_px,
+        block.max_width,
+        block.alignment,
+        block.line_height,
+        block.italic,
+        block.font_family.as_deref(),
+    )
+}
+
+/// Devuelve las medidas de un layout ya resuelto. Equivalente conceptual a
+/// `(layout.width(), layout.height())` pero envuelto en [`Measurement`].
+pub fn measurement(layout: &parley::Layout<()>) -> Measurement {
+    Measurement {
+        width: layout.width(),
+        height: layout.height(),
+    }
+}
+
+/// Pinta un layout ya resuelto en `scene` con `color` y un offset `origin`
+/// (esquina superior-izquierda del bloque). No alloca: los glifos van
+/// directo del iterador de parley al builder de vello.
+pub fn draw_layout(
+    scene: &mut vello::Scene,
+    layout: &parley::Layout<()>,
+    color: Color,
+    origin: (f64, f64),
+) {
+    draw_layout_xf(scene, layout, color, vello::kurbo::Affine::translate(origin));
+}
+
+/// Igual que [`draw_layout`] pero con una **afín completa** en vez de sólo un
+/// desplazamiento: permite pintar texto girado/escalado (p. ej. dentro de un
+/// marco rotado en una presentación espacial). El origen del layout (0,0) es el
+/// que mapea `transform`; las posiciones de glifo se aplican en ese espacio.
+pub fn draw_layout_xf(
+    scene: &mut vello::Scene,
+    layout: &parley::Layout<()>,
+    color: Color,
+    transform: vello::kurbo::Affine,
+) {
+    draw_layout_brush_xf(scene, layout, &Brush::Solid(color), transform);
+}
+
+/// Igual que [`draw_layout_xf`] pero con un [`Brush`] arbitrario en vez de un
+/// color sólido: permite rellenar los glifos con un gradiente o una imagen
+/// (p. ej. CSS `background-clip: text`). El brush se interpreta en el espacio
+/// **local** del layout (origen 0,0) y `transform` lo lleva al lugar final —
+/// así un gradiente construido en coords (0,0)-(w,h) queda alineado con los
+/// glifos. Para texto normal usá [`draw_layout_xf`] (solid = máxima compat).
+pub fn draw_layout_brush_xf(
+    scene: &mut vello::Scene,
+    layout: &parley::Layout<()>,
+    brush: &Brush,
+    transform: vello::kurbo::Affine,
+) {
+    for line in layout.lines() {
+        for item in line.items() {
+            if let parley::PositionedLayoutItem::GlyphRun(glyph_run) = item {
+                let run = glyph_run.run();
+                let font = run.font().clone();
+                let font_size = run.font_size();
+                scene
+                    .draw_glyphs(&font)
+                    .font_size(font_size)
+                    .brush(brush)
+                    .transform(transform)
+                    .draw(
+                        peniko::Fill::NonZero,
+                        glyph_run.positioned_glyphs().map(|g| vello::Glyph {
+                            id: g.id as u32,
+                            x: g.x,
+                            y: g.y,
+                        }),
+                    );
+            }
+        }
+    }
+}
+
+/// Pinta un layout **multicolor** ([`Typesetter::layout_runs`]): cada
+/// `glyph_run` usa el color de su propio brush ([`RunBrush`]) en vez de un
+/// color uniforme. `origin` es la esquina superior-izquierda del bloque.
+pub fn draw_layout_runs(
+    scene: &mut vello::Scene,
+    layout: &parley::Layout<RunBrush>,
+    origin: (f64, f64),
+) {
+    let transform = vello::kurbo::Affine::translate(origin);
+    for line in layout.lines() {
+        for item in line.items() {
+            if let parley::PositionedLayoutItem::GlyphRun(glyph_run) = item {
+                let brush = Brush::Solid(glyph_run.style().brush.0);
+                let run = glyph_run.run();
+                let font = run.font().clone();
+                let font_size = run.font_size();
+                scene
+                    .draw_glyphs(&font)
+                    .font_size(font_size)
+                    .brush(&brush)
+                    .transform(transform)
+                    .draw(
+                        peniko::Fill::NonZero,
+                        glyph_run.positioned_glyphs().map(|g| vello::Glyph {
+                            id: g.id as u32,
+                            x: g.x,
+                            y: g.y,
+                        }),
+                    );
+            }
+        }
+    }
+}
+
+/// Mide sin pintar. Atajo de [`layout_block`] + [`measurement`] para
+/// llamadores que sólo necesitan el bounding box.
+pub fn measure(ts: &mut Typesetter, block: &TextBlock<'_>) -> Measurement {
+    measurement(&layout_block(ts, block))
+}
+
+/// Rasteriza el bloque en `scene` haciendo shaping una sola vez. Equivale a
+/// `layout_block` + `draw_layout` con `block.origin`.
+pub fn draw_block(scene: &mut vello::Scene, ts: &mut Typesetter, block: &TextBlock<'_>) {
+    let layout = layout_block(ts, block);
+    draw_layout(scene, &layout, block.color, block.origin);
+}
diff --git a/llimphi-theme/Cargo.toml b/llimphi-theme/Cargo.toml
new file mode 100644
index 0000000..03cc663
--- /dev/null
+++ b/llimphi-theme/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-theme"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-theme — paleta compartida entre apps Llimphi. Define los slots semánticos (bg_app, fg_text, accent, etc.) en `peniko::Color`; cada widget toma su paleta del Theme vía `Palette::from_theme(&theme)`."
+
+[dependencies]
+# Reexporta peniko::Color para que las apps consuman sin pull-in directo.
+llimphi-raster = { path = "../llimphi-raster" }
diff --git a/llimphi-theme/LEEME.md b/llimphi-theme/LEEME.md
new file mode 100644
index 0000000..c08bb09
--- /dev/null
+++ b/llimphi-theme/LEEME.md
@@ -0,0 +1,9 @@
+# llimphi-theme
+
+> Themes Dark/Light/Aurora/Sunset + paleta de [llimphi](../README.md).
+
+`Theme { bg_app, bg_panel, bg_input, bg_button, fg_text, fg_muted, accent, border, ... }`. Cuatro variantes built-in; cualquier app puede definir las suyas. Tema reactivo: el cambio se propaga sin re-mount del árbol.
+
+## Deps
+
+- `serde`
diff --git a/llimphi-theme/README.md b/llimphi-theme/README.md
new file mode 100644
index 0000000..cd06e10
--- /dev/null
+++ b/llimphi-theme/README.md
@@ -0,0 +1,9 @@
+# llimphi-theme
+
+> Dark/Light/Aurora/Sunset themes + palette of [llimphi](../README.md).
+
+`Theme { bg_app, bg_panel, bg_input, bg_button, fg_text, fg_muted, accent, border, ... }`. Four built-in variants; any app can define its own. Reactive theme: changes propagate without re-mounting the tree.
+
+## Deps
+
+- `serde`
diff --git a/llimphi-theme/src/lib.rs b/llimphi-theme/src/lib.rs
new file mode 100644
index 0000000..3ff7990
--- /dev/null
+++ b/llimphi-theme/src/lib.rs
@@ -0,0 +1,361 @@
+//! `llimphi-theme` — paleta compartida entre apps Llimphi.
+//!
+//! Define un set de slots semánticos (`bg_app`, `fg_text`, `accent`, etc.)
+//! que cada widget mapea a su propio `Palette` específico vía
+//! `Palette::from_theme(&theme)`. El analógo Llimphi al `nahual-theme`
+//! GPUI, pero con colores `peniko::Color` y sin macros de Background /
+//! gradiente — Llimphi pinta colores sólidos por ahora.
+//!
+//! Disponer del Theme en un crate aparte permite:
+//! 1. **Consistencia visual**: las apps comparten paleta sin redefinirla.
+//! 2. **Temas intercambiables**: `Theme::dark()` vs `Theme::light()` (o
+//!    más adelante, sobreescritos por config del usuario).
+//! 3. **Widgets desacoplados**: cada widget acepta su `Palette` (no el
+//!    Theme entero), así un consumidor que sólo necesita un botón con
+//!    colores no-temáticos puede construir su `ButtonPalette` a mano.
+
+#![forbid(unsafe_code)]
+
+pub use llimphi_raster::peniko::Color;
+
+use std::time::Duration;
+
+// =====================================================================
+// Tokens transversales — motion, alpha, radius
+// =====================================================================
+//
+// Los widgets de elegancia (tooltip, toast, modal, spinner, splash, …)
+// comparten **duraciones**, **alphas** y **radios** para que el sistema
+// se sienta uno solo. Cada token es `const`: las apps pueden referenciar
+// `motion::NORMAL`/`alpha::SCRIM` directamente, o tomarlos del `Theme`
+// vía `theme.motion()` / `theme.alpha()` / `theme.radius()` cuando una
+// future variante por preset lo requiera.
+
+/// Duraciones canónicas (segundo nivel: rítmico, no nervioso, no
+/// soporífero). Los widgets eligen `FAST` para microinteracciones
+/// (hover, focus), `NORMAL` para transiciones principales (toast entrar,
+/// modal abrir) y `SLOW` para énfasis o entradas dramáticas (splash de
+/// boot).
+pub mod motion {
+    use super::Duration;
+
+    pub const FAST: Duration = Duration::from_millis(80);
+    pub const NORMAL: Duration = Duration::from_millis(160);
+    pub const SLOW: Duration = Duration::from_millis(320);
+
+    /// Easing estándar — cubic-out. Energía inicial, asentamiento suave.
+    /// La gran mayoría de transiciones de salida / aparición.
+    #[inline]
+    pub fn ease_out_cubic(t: f32) -> f32 {
+        let inv = 1.0 - t.clamp(0.0, 1.0);
+        1.0 - inv * inv * inv
+    }
+
+    /// Easing énfasis — cubic-in-out. Para movimientos que cruzan la
+    /// pantalla y necesitan acentuar el centro (modales, splashes).
+    #[inline]
+    pub fn ease_in_out_cubic(t: f32) -> f32 {
+        let t = t.clamp(0.0, 1.0);
+        if t < 0.5 {
+            4.0 * t * t * t
+        } else {
+            let f = -2.0 * t + 2.0;
+            1.0 - f * f * f / 2.0
+        }
+    }
+
+    /// Lineal — no es elegante pero a veces es lo correcto (barra de
+    /// progreso, valores numéricos crudos).
+    #[inline]
+    pub fn linear(t: f32) -> f32 {
+        t.clamp(0.0, 1.0)
+    }
+}
+
+/// Valores de opacidad alfa (0–255) para capas semánticas. Usar siempre
+/// que se quiera *transparencia coherente*. El widget que improvisa su
+/// propio alpha rompe la firma visual.
+pub mod alpha {
+    /// Scrim que cubre la app cuando hay overlay (menú/modal/picker).
+    /// Apaga el fondo lo justo para que el overlay tenga jerarquía,
+    /// sin ocultar contexto.
+    pub const SCRIM: u8 = 64;
+
+    /// Tinte aplicado a un panel "vidrio" sobre fondo activo (tooltip,
+    /// status hint). Casi opaco pero deja respirar.
+    pub const GLASS_PANEL: u8 = 232;
+
+    /// Elementos deshabilitados — visibles pero con menos peso.
+    pub const DISABLED: u8 = 140;
+
+    /// Hint sutil (text watermark, ghost) — apenas legible.
+    pub const HINT: u8 = 96;
+}
+
+/// Radios de esquina canónicos. La elegancia se construye en escalera:
+/// `XS` para chips e inputs, `SM` para botones, `MD` para paneles,
+/// `LG` para superficies grandes (toast, modal, card destacada).
+pub mod radius {
+    pub const XS: f64 = 2.0;
+    pub const SM: f64 = 4.0;
+    pub const MD: f64 = 8.0;
+    pub const LG: f64 = 12.0;
+    pub const XL: f64 = 20.0;
+}
+
+/// Paleta de la app. Slots semánticos que cubren los casos comunes
+/// (fondo, texto, hover, foco, acento). Los widgets reusables toman su
+/// `Palette` específico desde acá vía `Palette::from_theme(&theme)`.
+#[derive(Debug, Clone, Copy)]
+pub struct Theme {
+    /// Nombre legible del preset — alimenta `Theme::by_name`,
+    /// `next_after`, y los UIs que ciclan presets (theme-switcher).
+    pub name: &'static str,
+
+    // --- Fondos ---
+    /// Fondo de la ventana / superficie raíz.
+    pub bg_app: Color,
+    /// Fondo de paneles (sidebars, cards).
+    pub bg_panel: Color,
+    /// Fondo alternativo para barras / strips (tab bar, status bar).
+    pub bg_panel_alt: Color,
+    /// Fondo de campos de input (texto editable).
+    pub bg_input: Color,
+    /// Fondo de input cuando tiene foco.
+    pub bg_input_focus: Color,
+    /// Fondo de botón (chip).
+    pub bg_button: Color,
+    /// Fondo de botón al hover.
+    pub bg_button_hover: Color,
+    /// Fondo de la fila/item seleccionado (lista, tree).
+    pub bg_selected: Color,
+    /// Fondo de fila al hover (sin selección).
+    pub bg_row_hover: Color,
+
+    // --- Foregrounds (texto) ---
+    pub fg_text: Color,
+    pub fg_muted: Color,
+    pub fg_placeholder: Color,
+    pub fg_destructive: Color,
+
+    // --- Bordes y acento ---
+    pub border: Color,
+    pub border_focus: Color,
+    /// Acento primario — divisores activos, borde de input focado,
+    /// underline del tab activo, etc. Tono único de la app.
+    pub accent: Color,
+}
+
+impl Default for Theme {
+    fn default() -> Self {
+        Self::dark()
+    }
+}
+
+impl Theme {
+    /// Tema oscuro — el default. Análogo al `nahual-theme` dark en su
+    /// versión Llimphi: tonos azulados profundos, acento azul claro.
+    pub const fn dark() -> Self {
+        Self {
+            name: "Dark",
+            bg_app: Color::from_rgba8(14, 16, 22, 255),
+            bg_panel: Color::from_rgba8(22, 26, 36, 255),
+            bg_panel_alt: Color::from_rgba8(18, 22, 30, 255),
+            bg_input: Color::from_rgba8(16, 20, 28, 255),
+            bg_input_focus: Color::from_rgba8(20, 26, 38, 255),
+            bg_button: Color::from_rgba8(36, 42, 56, 255),
+            bg_button_hover: Color::from_rgba8(54, 64, 86, 255),
+            bg_selected: Color::from_rgba8(58, 78, 128, 255),
+            bg_row_hover: Color::from_rgba8(36, 44, 60, 255),
+            fg_text: Color::from_rgba8(214, 222, 232, 255),
+            fg_muted: Color::from_rgba8(140, 152, 170, 255),
+            fg_placeholder: Color::from_rgba8(95, 105, 122, 255),
+            fg_destructive: Color::from_rgba8(220, 110, 110, 255),
+            border: Color::from_rgba8(46, 54, 70, 255),
+            border_focus: Color::from_rgba8(110, 140, 220, 255),
+            accent: Color::from_rgba8(110, 140, 220, 255),
+        }
+    }
+
+    /// Tema claro — contraste revisado para WCAG AA sobre `bg_app`:
+    /// `fg_text` ~12:1, `fg_muted` ~5.4:1 (texto secundario legible),
+    /// `fg_destructive` y `accent` oscurecidos para superar 4.5:1 sobre
+    /// fondos claros. `fg_placeholder` queda deliberadamente tenue
+    /// (hint, no contenido).
+    pub const fn light() -> Self {
+        Self {
+            name: "Light",
+            bg_app: Color::from_rgba8(244, 246, 250, 255),
+            bg_panel: Color::from_rgba8(232, 236, 242, 255),
+            bg_panel_alt: Color::from_rgba8(224, 230, 240, 255),
+            bg_input: Color::from_rgba8(255, 255, 255, 255),
+            bg_input_focus: Color::from_rgba8(250, 252, 255, 255),
+            bg_button: Color::from_rgba8(220, 226, 236, 255),
+            bg_button_hover: Color::from_rgba8(200, 210, 226, 255),
+            bg_selected: Color::from_rgba8(160, 180, 220, 255),
+            bg_row_hover: Color::from_rgba8(214, 222, 236, 255),
+            fg_text: Color::from_rgba8(24, 32, 45, 255),
+            fg_muted: Color::from_rgba8(86, 98, 116, 255),
+            fg_placeholder: Color::from_rgba8(140, 150, 168, 255),
+            fg_destructive: Color::from_rgba8(168, 48, 48, 255),
+            border: Color::from_rgba8(190, 199, 214, 255),
+            border_focus: Color::from_rgba8(48, 92, 196, 255),
+            accent: Color::from_rgba8(48, 92, 196, 255),
+        }
+    }
+
+    /// Tema "Aurora" — verdes nocturnos con acento aqua. Análogo al
+    /// preset del nahual-theme.
+    pub const fn aurora() -> Self {
+        Self {
+            name: "Aurora",
+            bg_app: Color::from_rgba8(8, 18, 22, 255),
+            bg_panel: Color::from_rgba8(14, 28, 34, 255),
+            bg_panel_alt: Color::from_rgba8(12, 24, 30, 255),
+            bg_input: Color::from_rgba8(10, 22, 28, 255),
+            bg_input_focus: Color::from_rgba8(14, 30, 38, 255),
+            bg_button: Color::from_rgba8(20, 44, 52, 255),
+            bg_button_hover: Color::from_rgba8(30, 66, 78, 255),
+            bg_selected: Color::from_rgba8(30, 90, 100, 255),
+            bg_row_hover: Color::from_rgba8(20, 46, 56, 255),
+            fg_text: Color::from_rgba8(214, 232, 232, 255),
+            fg_muted: Color::from_rgba8(130, 168, 168, 255),
+            fg_placeholder: Color::from_rgba8(90, 120, 120, 255),
+            fg_destructive: Color::from_rgba8(220, 110, 110, 255),
+            border: Color::from_rgba8(38, 70, 78, 255),
+            border_focus: Color::from_rgba8(80, 200, 200, 255),
+            accent: Color::from_rgba8(80, 200, 200, 255),
+        }
+    }
+
+    /// Tema "Sunset" — cálidos con acento naranja, sobre base oscura.
+    pub const fn sunset() -> Self {
+        Self {
+            name: "Sunset",
+            bg_app: Color::from_rgba8(22, 14, 14, 255),
+            bg_panel: Color::from_rgba8(34, 22, 22, 255),
+            bg_panel_alt: Color::from_rgba8(28, 18, 18, 255),
+            bg_input: Color::from_rgba8(28, 18, 18, 255),
+            bg_input_focus: Color::from_rgba8(36, 24, 22, 255),
+            bg_button: Color::from_rgba8(54, 34, 28, 255),
+            bg_button_hover: Color::from_rgba8(78, 50, 38, 255),
+            bg_selected: Color::from_rgba8(120, 64, 38, 255),
+            bg_row_hover: Color::from_rgba8(56, 36, 28, 255),
+            fg_text: Color::from_rgba8(238, 220, 200, 255),
+            fg_muted: Color::from_rgba8(174, 142, 120, 255),
+            fg_placeholder: Color::from_rgba8(120, 96, 80, 255),
+            fg_destructive: Color::from_rgba8(220, 100, 100, 255),
+            border: Color::from_rgba8(70, 46, 36, 255),
+            border_focus: Color::from_rgba8(232, 140, 70, 255),
+            accent: Color::from_rgba8(232, 140, 70, 255),
+        }
+    }
+
+    /// Tema "Print" — blanco y negro de alto contraste para impresión.
+    /// Fondo blanco papel, tinta negra, sin grises decorativos: todo lo
+    /// que se imprime tiene que leerse en una fotocopiadora. `fg_muted`
+    /// es un gris medio (3.5:1) reservado a metadatos; el cuerpo va en
+    /// negro puro. Acento y bordes negros — la tinta es una sola.
+    pub const fn print() -> Self {
+        Self {
+            name: "Print",
+            bg_app: Color::from_rgba8(255, 255, 255, 255),
+            bg_panel: Color::from_rgba8(255, 255, 255, 255),
+            bg_panel_alt: Color::from_rgba8(246, 246, 246, 255),
+            bg_input: Color::from_rgba8(255, 255, 255, 255),
+            bg_input_focus: Color::from_rgba8(248, 248, 248, 255),
+            bg_button: Color::from_rgba8(238, 238, 238, 255),
+            bg_button_hover: Color::from_rgba8(224, 224, 224, 255),
+            bg_selected: Color::from_rgba8(220, 220, 220, 255),
+            bg_row_hover: Color::from_rgba8(240, 240, 240, 255),
+            fg_text: Color::from_rgba8(0, 0, 0, 255),
+            fg_muted: Color::from_rgba8(90, 90, 90, 255),
+            fg_placeholder: Color::from_rgba8(140, 140, 140, 255),
+            fg_destructive: Color::from_rgba8(0, 0, 0, 255),
+            border: Color::from_rgba8(0, 0, 0, 255),
+            border_focus: Color::from_rgba8(0, 0, 0, 255),
+            accent: Color::from_rgba8(0, 0, 0, 255),
+        }
+    }
+
+    /// Todos los presets del repo, en el orden canónico de rotación
+    /// (Dark → Light → Aurora → Sunset → Dark…). El theme-switcher
+    /// los consume vía [`Theme::next_after`]. `print()` queda fuera de la
+    /// rotación a propósito — es un modo deliberado (imprimir), no un
+    /// gusto estético que se cicle por accidente.
+    pub fn all() -> Vec<Self> {
+        vec![Self::dark(), Self::light(), Self::aurora(), Self::sunset()]
+    }
+
+    /// Busca un preset por nombre exacto.
+    pub fn by_name(name: &str) -> Option<Self> {
+        Self::all().into_iter().find(|t| t.name == name)
+    }
+
+    /// Próximo preset en la rotación de [`Theme::all`]. Si `current` no
+    /// se encuentra, retorna el primero — el switcher nunca se traba.
+    pub fn next_after(current: &str) -> Self {
+        let all = Self::all();
+        let idx = all
+            .iter()
+            .position(|t| t.name == current)
+            .map(|i| (i + 1) % all.len())
+            .unwrap_or(0);
+        all[idx]
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn presets_have_unique_names() {
+        let all = Theme::all();
+        let mut names: Vec<&str> = all.iter().map(|t| t.name).collect();
+        let n_before = names.len();
+        names.sort();
+        names.dedup();
+        assert_eq!(names.len(), n_before, "nombres duplicados en Theme::all()");
+    }
+
+    #[test]
+    fn by_name_finds_each_preset() {
+        for t in Theme::all() {
+            let by = Theme::by_name(t.name).expect("preset registrado");
+            assert_eq!(by.name, t.name);
+        }
+    }
+
+    #[test]
+    fn by_name_returns_none_for_unknown() {
+        assert!(Theme::by_name("ThisDoesNotExist").is_none());
+    }
+
+    #[test]
+    fn next_after_cycles_through_all_presets() {
+        let all = Theme::all();
+        let mut current = all[0].name;
+        let mut visited = vec![current];
+        for _ in 0..all.len() - 1 {
+            current = Theme::next_after(current).name;
+            visited.push(current);
+        }
+        let names: Vec<&str> = all.iter().map(|t| t.name).collect();
+        assert_eq!(visited, names);
+        // El siguiente debe volver al primero.
+        let wrapped = Theme::next_after(current).name;
+        assert_eq!(wrapped, all[0].name);
+    }
+
+    #[test]
+    fn next_after_unknown_falls_back_to_first() {
+        let n = Theme::next_after("Nope").name;
+        assert_eq!(n, Theme::all()[0].name);
+    }
+
+    #[test]
+    fn dark_is_the_default() {
+        assert_eq!(Theme::default().name, "Dark");
+    }
+}
diff --git a/llimphi-ui/Cargo.toml b/llimphi-ui/Cargo.toml
new file mode 100644
index 0000000..303b2ab
--- /dev/null
+++ b/llimphi-ui/Cargo.toml
@@ -0,0 +1,28 @@
+[package]
+name = "llimphi-ui"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+
+[dependencies]
+llimphi-hal = { path = "../llimphi-hal" }
+llimphi-layout = { path = "../llimphi-layout" }
+llimphi-raster = { path = "../llimphi-raster" }
+llimphi-text = { path = "../llimphi-text" }
+# El compositor declarativo (winit-free): View, mount, paint, hit-test.
+llimphi-compositor = { path = "../llimphi-compositor" }
+pollster = { workspace = true }
+
+[[example]]
+name = "counter"
+path = "examples/counter.rs"
+
+[[example]]
+name = "editor"
+path = "examples/editor.rs"
+
+[[example]]
+name = "gpu_paint_demo"
+path = "examples/gpu_paint_demo.rs"
diff --git a/llimphi-ui/LEEME.md b/llimphi-ui/LEEME.md
new file mode 100644
index 0000000..851c27c
--- /dev/null
+++ b/llimphi-ui/LEEME.md
@@ -0,0 +1,9 @@
+# llimphi-ui
+
+> `View<Msg>` retained-mode + Elm-arch de [llimphi](../README.md).
+
+API pública del framework: `App { Model, Msg, init, update, view }`. Reactivo: `update` muta el `Model`, `view(&Model)` produce el árbol; el runtime difea contra el árbol anterior y aplica el mínimo. Hover/focus/click se traducen a `Msg`s tipados.
+
+## Deps
+
+- [`llimphi-hal`](../llimphi-hal/README.md), [`llimphi-raster`](../llimphi-raster/README.md), [`llimphi-layout`](../llimphi-layout/README.md), [`llimphi-text`](../llimphi-text/README.md), [`llimphi-theme`](../llimphi-theme/README.md)
diff --git a/llimphi-ui/README.md b/llimphi-ui/README.md
new file mode 100644
index 0000000..6db31b4
--- /dev/null
+++ b/llimphi-ui/README.md
@@ -0,0 +1,9 @@
+# llimphi-ui
+
+> Retained-mode `View<Msg>` + Elm-arch of [llimphi](../README.md).
+
+Public API of the framework: `App { Model, Msg, init, update, view }`. Reactive: `update` mutates `Model`, `view(&Model)` produces the tree; the runtime diffs against the previous tree and applies the minimum. Hover/focus/click translate to typed `Msg`s.
+
+## Deps
+
+- [`llimphi-hal`](../llimphi-hal/README.md), [`llimphi-raster`](../llimphi-raster/README.md), [`llimphi-layout`](../llimphi-layout/README.md), [`llimphi-text`](../llimphi-text/README.md), [`llimphi-theme`](../llimphi-theme/README.md)
diff --git a/llimphi-ui/examples/counter.rs b/llimphi-ui/examples/counter.rs
new file mode 100644
index 0000000..8146812
--- /dev/null
+++ b/llimphi-ui/examples/counter.rs
@@ -0,0 +1,124 @@
+//! Fase 4 de Llimphi: contador Elm puro con texto real.
+//!
+//! Bucle completo input→update→view→layout→raster→present. El click sobre
+//! el botón inferior incrementa el contador; el panel central muestra el
+//! número actual rasterizado por skrifa+vello.
+//!
+//! Corre con: `cargo run -p llimphi-ui --example counter --release`.
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Dimension, FlexDirection, Size, Style},
+    AlignItems, JustifyContent,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::{App, Handle, View};
+
+#[derive(Clone)]
+enum Msg {
+    Increment,
+    Reset,
+}
+
+struct Counter;
+
+impl App for Counter {
+    type Model = u32;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · counter"
+    }
+
+    fn init(_: &Handle<Self::Msg>) -> Self::Model {
+        0
+    }
+
+    fn update(model: Self::Model, msg: Self::Msg, _: &Handle<Self::Msg>) -> Self::Model {
+        match msg {
+            Msg::Increment => model.saturating_add(1),
+            Msg::Reset => 0,
+        }
+    }
+
+    fn view(model: &Self::Model) -> View<Self::Msg> {
+        let number = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: Dimension::auto(),
+            },
+            flex_grow: 1.0,
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(JustifyContent::Center),
+            ..Default::default()
+        })
+        .text(model.to_string(), 160.0, Color::from_rgba8(230, 240, 250, 255));
+
+        let increment = View::new(Style {
+            size: Size {
+                width: length(160.0_f32),
+                height: length(56.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(JustifyContent::Center),
+            ..Default::default()
+        })
+        .fill(Color::from_rgba8(60, 200, 130, 255))
+        .radius(12.0)
+        .text("+1", 28.0, Color::from_rgba8(10, 30, 20, 255))
+        .on_click(Msg::Increment);
+
+        let reset = View::new(Style {
+            size: Size {
+                width: length(120.0_f32),
+                height: length(56.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(JustifyContent::Center),
+            ..Default::default()
+        })
+        .fill(Color::from_rgba8(220, 80, 80, 255))
+        .radius(12.0)
+        .text("reset", 22.0, Color::from_rgba8(30, 10, 10, 255))
+        .on_click(Msg::Reset);
+
+        let buttons = View::new(Style {
+            flex_direction: FlexDirection::Row,
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(56.0_f32),
+            },
+            gap: Size {
+                width: length(16.0_f32),
+                height: length(0.0_f32),
+            },
+            justify_content: Some(JustifyContent::Center),
+            ..Default::default()
+        })
+        .children(vec![increment, reset]);
+
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            gap: Size {
+                width: length(0.0_f32),
+                height: length(24.0_f32),
+            },
+            padding: llimphi_ui::llimphi_layout::taffy::Rect {
+                left: length(32.0_f32),
+                right: length(32.0_f32),
+                top: length(32.0_f32),
+                bottom: length(32.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(Color::from_rgba8(20, 24, 32, 255))
+        .children(vec![number, buttons])
+    }
+}
+
+fn main() {
+    llimphi_ui::run::<Counter>();
+}
diff --git a/llimphi-ui/examples/editor.rs b/llimphi-ui/examples/editor.rs
new file mode 100644
index 0000000..5dd8a46
--- /dev/null
+++ b/llimphi-ui/examples/editor.rs
@@ -0,0 +1,132 @@
+//! Editor mínimo: text field con char insertion, backspace, enter, ctrl+L
+//! para limpiar. Valida que el bucle Elm absorbe input de teclado.
+//!
+//! Corre con: `cargo run -p llimphi-ui --example editor --release`.
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{App, Handle, Key, KeyEvent, KeyState, NamedKey, View};
+
+#[derive(Clone)]
+enum Msg {
+    Insert(String),
+    Backspace,
+    Clear,
+}
+
+struct Editor;
+
+impl App for Editor {
+    type Model = String;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · editor"
+    }
+
+    fn init(_: &Handle<Self::Msg>) -> Self::Model {
+        String::new()
+    }
+
+    fn update(model: Self::Model, msg: Self::Msg, _: &Handle<Self::Msg>) -> Self::Model {
+        match msg {
+            Msg::Insert(s) => {
+                let mut m = model;
+                m.push_str(&s);
+                m
+            }
+            Msg::Backspace => {
+                let mut m = model;
+                m.pop();
+                m
+            }
+            Msg::Clear => String::new(),
+        }
+    }
+
+    fn on_key(_: &Self::Model, e: &KeyEvent) -> Option<Self::Msg> {
+        if e.state != KeyState::Pressed {
+            return None;
+        }
+        if e.modifiers.ctrl {
+            if let Key::Character(c) = &e.key {
+                if c.eq_ignore_ascii_case("l") {
+                    return Some(Msg::Clear);
+                }
+            }
+            return None;
+        }
+        match &e.key {
+            Key::Named(NamedKey::Backspace) => Some(Msg::Backspace),
+            Key::Named(NamedKey::Enter) => Some(Msg::Insert("\n".into())),
+            Key::Named(NamedKey::Tab) => Some(Msg::Insert("    ".into())),
+            _ => e.text.clone().map(Msg::Insert),
+        }
+    }
+
+    fn view(model: &Self::Model) -> View<Self::Msg> {
+        let body_text = if model.is_empty() {
+            "tipea algo · ctrl+L limpia · enter salto · backspace borra".to_string()
+        } else {
+            // Cursor visual al final del contenido.
+            format!("{model}\u{2588}")
+        };
+        let body_color = if model.is_empty() {
+            Color::from_rgba8(110, 130, 150, 255)
+        } else {
+            Color::from_rgba8(220, 230, 240, 255)
+        };
+
+        let body = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            flex_grow: 1.0,
+            ..Default::default()
+        })
+        .text_aligned(body_text, 22.0, body_color, Alignment::Start);
+
+        let status = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(36.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(Color::from_rgba8(30, 36, 48, 255))
+        .text(
+            format!("{} chars", model.chars().count()),
+            16.0,
+            Color::from_rgba8(160, 180, 200, 255),
+        );
+
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            gap: Size {
+                width: length(0.0_f32),
+                height: length(8.0_f32),
+            },
+            padding: llimphi_ui::llimphi_layout::taffy::Rect {
+                left: length(24.0_f32),
+                right: length(24.0_f32),
+                top: length(24.0_f32),
+                bottom: length(24.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(Color::from_rgba8(20, 24, 32, 255))
+        .children(vec![body, status])
+    }
+}
+
+fn main() {
+    llimphi_ui::run::<Editor>();
+}
diff --git a/llimphi-ui/examples/gpu_paint_demo.rs b/llimphi-ui/examples/gpu_paint_demo.rs
new file mode 100644
index 0000000..eaba54c
--- /dev/null
+++ b/llimphi-ui/examples/gpu_paint_demo.rs
@@ -0,0 +1,393 @@
+//! Demo del hook GPU directo (`View::gpu_paint_with`) — Fase 1 del SDD
+//! `02_ruway/llimphi/SDD.md` §"GPU directo wgpu".
+//!
+//! Pinta una grilla de N puntos coloridos sobre un panel central usando
+//! un pipeline `wgpu` propio (instanced quad), encima de un fondo y
+//! títulos pintados por vello. Valida que:
+//!
+//! - El callback `gpu_paint_with` recibe `(device, queue, encoder,
+//!   view, rect)` con los recursos del runtime.
+//! - El `LoadOp::Load` preserva la pasada vello (el fondo no se borra).
+//! - El submit del encoder ocurre antes del `surface.present` (las
+//!   primitivas GPU son visibles).
+//!
+//! Corre con: `cargo run -p llimphi-ui --example gpu_paint_demo --release`.
+
+use std::sync::{Arc, OnceLock};
+
+use llimphi_ui::llimphi_hal::wgpu;
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, percent, FlexDirection, Size, Style},
+    AlignItems, JustifyContent, Rect as TaffyRect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::{App, Handle, PaintRect, View};
+
+const POINTS: u32 = 250_000;
+const TARGET_FORMAT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba8Unorm;
+
+#[derive(Clone)]
+enum Msg {
+    Bump,
+}
+
+struct GpuDemo;
+
+impl App for GpuDemo {
+    type Model = u32;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · gpu_paint_demo"
+    }
+
+    fn init(_: &Handle<Self::Msg>) -> Self::Model {
+        0
+    }
+
+    fn update(model: Self::Model, msg: Self::Msg, _: &Handle<Self::Msg>) -> Self::Model {
+        match msg {
+            Msg::Bump => model.wrapping_add(1),
+        }
+    }
+
+    fn view(model: &Self::Model) -> View<Self::Msg> {
+        let title = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(48.0_f32),
+            },
+            justify_content: Some(JustifyContent::Center),
+            align_items: Some(AlignItems::Center),
+            ..Default::default()
+        })
+        .text(
+            format!("gpu_paint_with — {POINTS} puntos GPU directo · seed {model}"),
+            22.0,
+            Color::from_rgba8(220, 230, 245, 255),
+        );
+
+        // Canvas central: vello pinta el fondo (fill + radius), GPU pinta
+        // la grilla de puntos encima vía gpu_paint_with. El seed del
+        // modelo se mete en el shader vía una rotación trivial — cada
+        // click cambia el patrón. El callback se invoca ya con el
+        // CommandEncoder del frame y la TextureView intermediate.
+        let seed = *model;
+        let canvas = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: auto(),
+            },
+            flex_grow: 1.0,
+            ..Default::default()
+        })
+        .fill(Color::from_rgba8(14, 18, 28, 255))
+        .radius(8.0)
+        .gpu_paint_with(move |device, queue, encoder, view, rect, _viewport| {
+            draw_points(device, queue, encoder, view, rect, seed);
+        })
+        .on_click(Msg::Bump);
+
+        let footer = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(28.0_f32),
+            },
+            justify_content: Some(JustifyContent::Center),
+            align_items: Some(AlignItems::Center),
+            ..Default::default()
+        })
+        .text(
+            "click sobre el canvas → rebobinar el seed",
+            14.0,
+            Color::from_rgba8(150, 165, 185, 255),
+        );
+
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            gap: Size {
+                width: length(0.0_f32),
+                height: length(16.0_f32),
+            },
+            padding: TaffyRect {
+                left: length(24.0_f32),
+                right: length(24.0_f32),
+                top: length(16.0_f32),
+                bottom: length(16.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(Color::from_rgba8(24, 28, 38, 255))
+        .children(vec![title, canvas, footer])
+    }
+}
+
+fn main() {
+    llimphi_ui::run::<GpuDemo>();
+}
+
+// ============================================================
+// Lado GPU del demo: pipeline + buffer + draw call.
+// ============================================================
+
+/// Estado compartido del demo a través de los frames. Se construye en
+/// el primer `gpu_paint_with` (cuando ya tenemos device/queue) y se
+/// reutiliza después. Sin esto pagaríamos creación de pipeline + write
+/// del buffer por frame, que es lo que `GpuBatch` resolverá de raíz en
+/// Fase 3.
+struct DemoGpu {
+    pipeline: wgpu::RenderPipeline,
+    instances: wgpu::Buffer,
+    uniforms: wgpu::Buffer,
+    bind_group: wgpu::BindGroup,
+}
+
+fn shared() -> &'static OnceLock<Arc<DemoGpu>> {
+    static SLOT: OnceLock<Arc<DemoGpu>> = OnceLock::new();
+    &SLOT
+}
+
+fn draw_points(
+    device: &wgpu::Device,
+    queue: &wgpu::Queue,
+    encoder: &mut wgpu::CommandEncoder,
+    view: &wgpu::TextureView,
+    rect: PaintRect,
+    seed: u32,
+) {
+    let gpu = shared()
+        .get_or_init(|| Arc::new(DemoGpu::new(device)))
+        .clone();
+
+    // Uniforms: rect + seed → el VS los usa para colocar y colorear.
+    let uniforms = [rect.x, rect.y, rect.w, rect.h, f32::from_bits(seed), 0.0, 0.0, 0.0];
+    let mut bytes = Vec::with_capacity(32);
+    for v in uniforms {
+        bytes.extend_from_slice(&v.to_ne_bytes());
+    }
+    queue.write_buffer(&gpu.uniforms, 0, &bytes);
+
+    {
+        let mut pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+            label: Some("gpu_paint_demo-pass"),
+            color_attachments: &[Some(wgpu::RenderPassColorAttachment {
+                view,
+                resolve_target: None,
+                ops: wgpu::Operations {
+                    // Load preserva el fondo vello ya pintado en este frame.
+                    load: wgpu::LoadOp::Load,
+                    store: wgpu::StoreOp::Store,
+                },
+            })],
+            depth_stencil_attachment: None,
+            timestamp_writes: None,
+            occlusion_query_set: None,
+        });
+        pass.set_pipeline(&gpu.pipeline);
+        pass.set_bind_group(0, &gpu.bind_group, &[]);
+        pass.set_vertex_buffer(0, gpu.instances.slice(..));
+        pass.draw(0..6, 0..POINTS);
+    }
+}
+
+impl DemoGpu {
+    fn new(device: &wgpu::Device) -> Self {
+        let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
+            label: Some("gpu_paint_demo-shader"),
+            source: wgpu::ShaderSource::Wgsl(WGSL.into()),
+        });
+
+        let bind_layout = device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
+            label: Some("gpu_paint_demo-bgl"),
+            entries: &[wgpu::BindGroupLayoutEntry {
+                binding: 0,
+                visibility: wgpu::ShaderStages::VERTEX_FRAGMENT,
+                ty: wgpu::BindingType::Buffer {
+                    ty: wgpu::BufferBindingType::Uniform,
+                    has_dynamic_offset: false,
+                    min_binding_size: None,
+                },
+                count: None,
+            }],
+        });
+
+        let pipeline_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+            label: Some("gpu_paint_demo-pl"),
+            bind_group_layouts: &[&bind_layout],
+            push_constant_ranges: &[],
+        });
+
+        let pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+            label: Some("gpu_paint_demo-pipe"),
+            layout: Some(&pipeline_layout),
+            vertex: wgpu::VertexState {
+                module: &shader,
+                entry_point: Some("vs"),
+                compilation_options: Default::default(),
+                buffers: &[wgpu::VertexBufferLayout {
+                    array_stride: 4,
+                    step_mode: wgpu::VertexStepMode::Instance,
+                    attributes: &[wgpu::VertexAttribute {
+                        format: wgpu::VertexFormat::Uint32,
+                        offset: 0,
+                        shader_location: 0,
+                    }],
+                }],
+            },
+            primitive: wgpu::PrimitiveState {
+                topology: wgpu::PrimitiveTopology::TriangleList,
+                strip_index_format: None,
+                front_face: wgpu::FrontFace::Ccw,
+                cull_mode: None,
+                unclipped_depth: false,
+                polygon_mode: wgpu::PolygonMode::Fill,
+                conservative: false,
+            },
+            depth_stencil: None,
+            multisample: wgpu::MultisampleState::default(),
+            fragment: Some(wgpu::FragmentState {
+                module: &shader,
+                entry_point: Some("fs"),
+                compilation_options: Default::default(),
+                targets: &[Some(wgpu::ColorTargetState {
+                    format: TARGET_FORMAT,
+                    blend: Some(wgpu::BlendState::ALPHA_BLENDING),
+                    write_mask: wgpu::ColorWrites::ALL,
+                })],
+            }),
+            multiview: None,
+            cache: None,
+        });
+
+        // Instance buffer: índice 0..POINTS empaquetado como u32.
+        let mut idx_bytes = Vec::with_capacity((POINTS as usize) * 4);
+        for i in 0..POINTS {
+            idx_bytes.extend_from_slice(&i.to_ne_bytes());
+        }
+        let instances = device.create_buffer(&wgpu::BufferDescriptor {
+            label: Some("gpu_paint_demo-inst"),
+            size: idx_bytes.len() as u64,
+            usage: wgpu::BufferUsages::VERTEX | wgpu::BufferUsages::COPY_DST,
+            mapped_at_creation: false,
+        });
+        // El buffer ya vive el resto del programa — escribimos una vez.
+        // Para esto necesitamos el queue, pero `new` no lo recibe. Lo
+        // mantenemos como "lazy escrito en draw_points la primera vez";
+        // por simplicidad lo escribimos en el primer queue.write_buffer
+        // del flujo de uniforms. Actualmente el shader no usa la
+        // instancia (sólo @builtin(vertex_index) + uniforms + builtin
+        // instance_index), así que el buffer es ignorado — lo dejamos
+        // para que el layout del pipeline siga válido y el día que
+        // queramos meter datos por instancia ya está el slot listo.
+        let _ = idx_bytes; // (no se sube — ver comentario arriba)
+
+        let uniforms = device.create_buffer(&wgpu::BufferDescriptor {
+            label: Some("gpu_paint_demo-u"),
+            size: 32,
+            usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
+            mapped_at_creation: false,
+        });
+
+        let bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
+            label: Some("gpu_paint_demo-bg"),
+            layout: &bind_layout,
+            entries: &[wgpu::BindGroupEntry {
+                binding: 0,
+                resource: uniforms.as_entire_binding(),
+            }],
+        });
+
+        Self {
+            pipeline,
+            instances,
+            uniforms,
+            bind_group,
+        }
+    }
+}
+
+// Hash 32-bit barato (PCG-like) implementado en WGSL para mapear
+// `instance_index + seed` → posición/color sin tocar buffers. Mantiene
+// el demo en una sola draw call con cero CPU work por frame (salvo
+// 32 bytes de uniforms).
+const WGSL: &str = r#"
+struct Uniforms {
+    rect:   vec4<f32>, // x, y, w, h en pixels del frame
+    seed:   u32,
+    _pad0:  u32,
+    _pad1:  u32,
+    _pad2:  u32,
+};
+
+@group(0) @binding(0) var<uniform> u: Uniforms;
+
+struct V2F {
+    @builtin(position) pos: vec4<f32>,
+    @location(0) color: vec4<f32>,
+};
+
+fn hash(x: u32) -> u32 {
+    var v = x ^ 2747636419u;
+    v = v * 2654435769u;
+    v = v ^ (v >> 16u);
+    v = v * 2654435769u;
+    v = v ^ (v >> 16u);
+    v = v * 2654435769u;
+    return v;
+}
+
+// La resolución real del frame no la conoce el shader sin un uniform
+// adicional. Como aproximación robusta, asumimos que el callback se
+// llama sobre un viewport "default" 960×540 (tamaño inicial del demo)
+// y dejamos que rect.x/y/w/h centren los puntos dentro del canvas.
+// El tamaño real del frame se debería pasar por uniforms en una versión
+// no-demo — Fase 2/3 del SDD lo formaliza vía `GpuBatch`.
+const FRAME_W: f32 = 960.0;
+const FRAME_H: f32 = 540.0;
+
+@vertex
+fn vs(@builtin(vertex_index) vid: u32, @builtin(instance_index) iid: u32) -> V2F {
+    var corners = array<vec2<f32>, 6>(
+        vec2<f32>(-1.0, -1.0),
+        vec2<f32>( 1.0, -1.0),
+        vec2<f32>( 1.0,  1.0),
+        vec2<f32>(-1.0, -1.0),
+        vec2<f32>( 1.0,  1.0),
+        vec2<f32>(-1.0,  1.0),
+    );
+    let off = corners[vid] * 1.5; // quad de 3 pixels lado
+
+    let h1 = hash(iid ^ u.seed);
+    let h2 = hash(h1);
+    let h3 = hash(h2);
+
+    let fx = f32(h1 & 0xFFFFu) / 65535.0;
+    let fy = f32(h2 & 0xFFFFu) / 65535.0;
+
+    let px = u.rect.x + fx * u.rect.z + off.x;
+    let py = u.rect.y + fy * u.rect.w + off.y;
+
+    let ndc = vec2<f32>(
+        px / FRAME_W * 2.0 - 1.0,
+        1.0 - py / FRAME_H * 2.0,
+    );
+
+    let r = f32( h3        & 0xFFu) / 255.0;
+    let g = f32((h3 >>  8u) & 0xFFu) / 255.0;
+    let b = f32((h3 >> 16u) & 0xFFu) / 255.0;
+
+    var out: V2F;
+    out.pos = vec4<f32>(ndc, 0.0, 1.0);
+    out.color = vec4<f32>(r, g, b, 0.85);
+    return out;
+}
+
+@fragment
+fn fs(in: V2F) -> @location(0) vec4<f32> {
+    return in.color;
+}
+"#;
diff --git a/llimphi-ui/src/eventloop.rs b/llimphi-ui/src/eventloop.rs
new file mode 100644
index 0000000..a20abe2
--- /dev/null
+++ b/llimphi-ui/src/eventloop.rs
@@ -0,0 +1,1301 @@
+use super::*;
+
+pub(crate) fn build_window_attributes<A: App>() -> WindowAttributes {
+    let (w, h) = A::initial_size();
+    let attrs = WindowAttributes::default()
+        .with_title(A::title())
+        .with_inner_size(LogicalSize::new(w, h));
+    // En Linux, `with_name` del trait de Wayland mapea al `app_id` del
+    // xdg-toplevel — lo que el compositor (`mirada-compositor`) usa para
+    // reconocer ventanas especiales (greeter, launcher…).
+    #[cfg(all(target_os = "linux", not(target_os = "android")))]
+    {
+        if let Some(id) = A::app_id() {
+            use llimphi_hal::winit::platform::wayland::WindowAttributesExtWayland;
+            return attrs.with_name(id, "");
+        }
+    }
+    attrs
+}
+
+impl<A: App> ApplicationHandler<UserEvent<A::Msg>> for Runtime<A> {
+    fn resumed(&mut self, event_loop: &ActiveEventLoop) {
+        if self.state.is_some() {
+            return;
+        }
+        let window = event_loop
+            .create_window(build_window_attributes::<A>())
+            .expect("create window");
+        let window = Arc::new(window);
+        // IME opt-in: sólo se habilita si la app lo pide (ver `App::ime_allowed`).
+        // Con IME activo el texto compuesto llega por `WindowEvent::Ime`.
+        if A::ime_allowed() {
+            window.set_ime_allowed(true);
+        }
+        let hal = pollster::block_on(Hal::new(None)).expect("hal");
+        let surface = WinitSurface::new(&hal, window.clone()).expect("surface");
+        let renderer = Renderer::new(&hal).expect("renderer");
+        let overlay_compositor = llimphi_hal::OverlayCompositor::new(&hal.device);
+        let typesetter = llimphi_text::Typesetter::new();
+        window.request_redraw();
+        self.state = Some(RuntimeState {
+            window,
+            hal,
+            surface,
+            renderer,
+            scene: vello::Scene::new(),
+            overlay_compositor,
+            model: Some(A::init(&self.handle)),
+            cursor: PhysicalPosition::new(0.0, 0.0),
+            modifiers: Modifiers::default(),
+            typesetter,
+            layout: LayoutTree::new(),
+            overlay_layout: LayoutTree::new(),
+            last_render: None,
+            hovered: None,
+            drag: None,
+            focused: None,
+            last_title: None,
+        });
+        // Sincroniza el factor de escala inicial (el de la ventana recién
+        // creada) ANTES del primer render: así una app que dependa del DPI
+        // (p. ej. `devicePixelRatio` en puriy) ya lo tiene correcto en su
+        // primera pasada, sin esperar a un ScaleFactorChanged.
+        if let Some(state) = self.state.as_mut() {
+            let scale = state.window.scale_factor();
+            if let Some(msg) = A::on_scale_factor(state.model.as_ref().expect("model"), scale) {
+                let model = state.model.take().expect("model");
+                state.model = Some(A::update(model, msg, &self.handle));
+                state.last_render = None;
+            }
+        }
+    }
+
+    fn user_event(&mut self, event_loop: &ActiveEventLoop, event: UserEvent<A::Msg>) {
+        match event {
+            UserEvent::Quit => event_loop.exit(),
+            UserEvent::Msg(msg) => {
+                // Un Msg del canal (Handle::dispatch, ticks periódicos, trabajo
+                // de fondo) muta el modelo compartido y repinta TODAS las
+                // ventanas — así un cambio se refleja tanto en la primaria como
+                // en las secundarias (config) sin importar de dónde vino.
+                self.dispatch_model(msg);
+            }
+            UserEvent::OpenWindow { key, title, width, height } => {
+                self.open_secondary(event_loop, key, title, width, height);
+            }
+            UserEvent::CloseWindow { key } => {
+                if let Some(pos) = self.secondaries.iter().position(|s| s.key == key) {
+                    // Drop de la SecondaryState → se destruye la ventana/surface.
+                    self.secondaries.remove(pos);
+                }
+            }
+        }
+    }
+
+    fn window_event(
+        &mut self,
+        event_loop: &ActiveEventLoop,
+        _id: WindowId,
+        event: WindowEvent,
+    ) {
+        // ¿El evento es de una ventana secundaria? Lo atiende su handler
+        // dedicado (path aparte: la primaria queda 100% intacta).
+        if let Some(idx) = self.secondaries.iter().position(|s| s.window.id() == _id) {
+            self.handle_secondary_event(idx, event);
+            return;
+        }
+        let Some(state) = self.state.as_mut() else {
+            return;
+        };
+        match event {
+            WindowEvent::CloseRequested => event_loop.exit(),
+            WindowEvent::Resized(size) => {
+                state.surface.resize(size.width, size.height);
+                // La app puede reaccionar al nuevo viewport (emitir un
+                // evento `resize`, recalcular layout, etc.). El update se
+                // corre tras reconfigurar la surface; el cache se invalida
+                // para repintar con el tamaño nuevo.
+                if let Some(msg) =
+                    A::on_resize(state.model.as_ref().expect("model"), size.width, size.height)
+                {
+                    let model = state.model.take().expect("model");
+                    state.model = Some(A::update(model, msg, &self.handle));
+                    state.last_render = None;
+                }
+                state.window.request_redraw();
+            }
+            WindowEvent::ScaleFactorChanged { scale_factor, .. } => {
+                // El DPI de la ventana cambió (movida a otro monitor, escalado
+                // del sistema). winit envía un Resized aparte para el nuevo
+                // tamaño físico; aquí sólo propagamos el factor.
+                if let Some(msg) =
+                    A::on_scale_factor(state.model.as_ref().expect("model"), scale_factor)
+                {
+                    let model = state.model.take().expect("model");
+                    state.model = Some(A::update(model, msg, &self.handle));
+                    state.last_render = None;
+                }
+                state.window.request_redraw();
+            }
+            WindowEvent::CursorMoved { position, .. } => {
+                let prev_cursor = state.cursor;
+                state.cursor = position;
+                // Drag activo: dispatchear delta al handler + actualizar
+                // tracking del drop target hovereado (solo si hay payload).
+                if let Some(drag) = state.drag.as_mut() {
+                    let dx = (position.x - drag.last_cursor.x) as f32;
+                    let dy = (position.y - drag.last_cursor.y) as f32;
+                    drag.last_cursor = position;
+                    let payload_active = drag.payload.is_some();
+                    let mut need_redraw = false;
+                    if dx != 0.0 || dy != 0.0 {
+                        let msg_opt = match &drag.handler {
+                            DragHandlerKind::Delta(h) => h(DragPhase::Move, dx, dy),
+                            DragHandlerKind::DeltaAt(h, lx0, ly0) => {
+                                h(DragPhase::Move, dx, dy, *lx0, *ly0)
+                            }
+                        };
+                        if let Some(msg) = msg_opt {
+                            let model = state.model.take().expect("model");
+                            state.model = Some(A::update(model, msg, &self.handle));
+                            // Durante drag NO invalidamos el cache —
+                            // queda válido para el próximo Move.
+                            need_redraw = true;
+                        }
+                    }
+                    if payload_active {
+                        if let Some(cache) = state.last_render.as_mut() {
+                            let new_drop = hit_test_drop(
+                                &cache.mounted,
+                                &cache.computed,
+                                position.x as f32,
+                                position.y as f32,
+                            );
+                            if new_drop != cache.drop_hover_idx {
+                                cache.drop_hover_idx = new_drop;
+                                need_redraw = true;
+                            }
+                        }
+                    }
+                    if need_redraw {
+                        state.window.request_redraw();
+                    }
+                } else {
+                    // Sin drag: chequear hover. Si hay overlay, el
+                    // hover-test va contra él; el árbol principal queda
+                    // congelado mientras el overlay esté arriba.
+                    //
+                    // Además del repintado (para el `hover_fill`), si el
+                    // nodo recién hovereado declara un `on_pointer_enter`,
+                    // lo dispatcheamos: es lo que permite, p.ej., cambiar
+                    // de menú con el mouse o abrir un submenú al pasar por
+                    // encima. Extraemos el Msg en un scope para soltar el
+                    // borrow del cache antes de mutar el modelo.
+                    let mut enter_msg: Option<A::Msg> = None;
+                    let mut hovered_changed = false;
+                    let mut new_hovered: Option<usize> = state.hovered;
+                    if let Some(cache) = state.last_render.as_ref() {
+                        let (mounted, computed) = match cache.overlay.as_ref() {
+                            Some(ov) => (&ov.mounted, &ov.computed),
+                            None => (&cache.mounted, &cache.computed),
+                        };
+                        let new_hover = hit_test_hover(
+                            mounted,
+                            computed,
+                            position.x as f32,
+                            position.y as f32,
+                        );
+                        // Comparamos contra el hover PERSISTENTE (state.hovered),
+                        // no contra el del cache: el render recomputa el del cache
+                        // al cursor actual cada cuadro, así que en una app que
+                        // re-renderiza sin parar la transición de hover se perdería
+                        // (y el hover-switch de menús no andaría). Ver `hovered`.
+                        if new_hover != state.hovered {
+                            hovered_changed = true;
+                            enter_msg = new_hover
+                                .and_then(|i| mounted.nodes.get(i))
+                                .and_then(|n| n.on_pointer_enter.clone());
+                        }
+                        new_hovered = new_hover;
+                    }
+                    state.hovered = new_hovered;
+                    if hovered_changed {
+                        state.window.request_redraw();
+                    }
+                    if let Some(msg) = enter_msg {
+                        let model = state.model.take().expect("model");
+                        state.model = Some(A::update(model, msg, &self.handle));
+                        // El estado cambió → invalidamos el cache para
+                        // re-render (p.ej. el submenú que se abre).
+                        state.last_render = None;
+                    }
+                    let _ = prev_cursor;
+                }
+            }
+            WindowEvent::ModifiersChanged(mods) => {
+                state.modifiers = mods.state().into();
+            }
+            WindowEvent::Ime(ime) if A::ime_allowed() => {
+                use llimphi_hal::winit::event::Ime;
+                let ev = match ime {
+                    Ime::Enabled => ImeEvent::Enabled,
+                    Ime::Preedit(text, cursor) => ImeEvent::Preedit { text, cursor },
+                    Ime::Commit(text) => ImeEvent::Commit(text),
+                    Ime::Disabled => ImeEvent::Disabled,
+                };
+                if let Some(msg) = A::on_ime(state.model.as_ref().expect("model"), &ev) {
+                    let model = state.model.take().expect("model");
+                    state.model = Some(A::update(model, msg, &self.handle));
+                    state.last_render = None;
+                    state.window.request_redraw();
+                }
+            }
+            WindowEvent::KeyboardInput { event, .. } => {
+                // Tab / Shift+Tab mueven el foco entre nodos `focusable`,
+                // que administra el runtime. Sólo intercepta si hay
+                // enfocables y en Pressed; si no, cae al `on_key` normal
+                // (apps que usan Tab para otra cosa lo siguen recibiendo).
+                let is_tab = event.state == ElementState::Pressed
+                    && matches!(event.logical_key, Key::Named(NamedKey::Tab));
+                if is_tab {
+                    let order = state
+                        .last_render
+                        .as_ref()
+                        .map(|c| focus_order(&c.mounted, &c.computed))
+                        .unwrap_or_default();
+                    if !order.is_empty() {
+                        let next = next_focus(&order, state.focused, state.modifiers.shift);
+                        state.focused = next;
+                        if let Some(msg) =
+                            A::on_focus(state.model.as_ref().expect("model"), next)
+                        {
+                            let model = state.model.take().expect("model");
+                            state.model = Some(A::update(model, msg, &self.handle));
+                        }
+                        state.last_render = None;
+                        state.window.request_redraw();
+                        return;
+                    }
+                }
+                let ev = KeyEvent {
+                    key: event.logical_key.clone(),
+                    state: match event.state {
+                        ElementState::Pressed => KeyState::Pressed,
+                        ElementState::Released => KeyState::Released,
+                    },
+                    text: event.text.as_ref().map(|t| t.to_string()),
+                    modifiers: state.modifiers,
+                    repeat: event.repeat,
+                };
+                if let Some(msg) = A::on_key(state.model.as_ref().expect("model"), &ev) {
+                    let model = state.model.take().expect("model");
+                    state.model = Some(A::update(model, msg, &self.handle));
+                    state.last_render = None;
+                    state.window.request_redraw();
+                }
+            }
+            WindowEvent::DroppedFile(path) => {
+                // Un evento por archivo (winit los entrega serializados); si
+                // el usuario suelta varios, el bucle re-entra y aplicamos
+                // updates en orden.
+                if let Some(msg) = A::on_file_drop(state.model.as_ref().expect("model"), path) {
+                    let model = state.model.take().expect("model");
+                    state.model = Some(A::update(model, msg, &self.handle));
+                    state.last_render = None;
+                    state.window.request_redraw();
+                }
+            }
+            WindowEvent::MouseWheel { delta, .. } => {
+                // Convención winit: LineDelta es líneas; PixelDelta es
+                // píxeles físicos (touchpads). En CSS y aquí, positivo
+                // (rueda hacia adelante / dos dedos arriba) = scroll
+                // hacia arriba, así que invertimos `y` para que el
+                // contenido "siga al dedo" en y positivo. `x` queda
+                // como llega.
+                let wd = match delta {
+                    MouseScrollDelta::LineDelta(x, y) => WheelDelta { x, y: -y },
+                    MouseScrollDelta::PixelDelta(p) => WheelDelta {
+                        x: (p.x as f32) / 20.0,
+                        y: -(p.y as f32) / 20.0,
+                    },
+                };
+                let cursor = (state.cursor.x as f32, state.cursor.y as f32);
+                // Primero: ¿hay un nodo con `on_scroll` bajo el cursor? Si
+                // consume el evento (`Some`), no cae al `on_wheel` global.
+                // El overlay tiene prioridad, igual que con clicks. Se
+                // extrae el handler en un scope para soltar el borrow del
+                // cache antes de mutar el modelo.
+                let scroll_handler: Option<ScrollFn<A::Msg>> =
+                    if let Some(cache) = state.last_render.as_ref() {
+                        let (m, c) = match cache.overlay.as_ref() {
+                            Some(ov) => (&ov.mounted, &ov.computed),
+                            None => (&cache.mounted, &cache.computed),
+                        };
+                        hit_test_scroll(m, c, cursor.0, cursor.1)
+                            .and_then(|i| m.nodes[i].on_scroll.clone())
+                    } else {
+                        None
+                    };
+                let msg = match scroll_handler {
+                    Some(h) => h(wd.x, wd.y),
+                    None => A::on_wheel(
+                        state.model.as_ref().expect("model"),
+                        wd,
+                        cursor,
+                        state.modifiers,
+                    ),
+                };
+                if let Some(msg) = msg {
+                    let model = state.model.take().expect("model");
+                    state.model = Some(A::update(model, msg, &self.handle));
+                    state.last_render = None;
+                    state.window.request_redraw();
+                }
+            }
+            WindowEvent::MouseInput {
+                state: ElementState::Pressed,
+                button: MouseButton::Left,
+                ..
+            } => {
+                // Hit-test contra el cache del último redraw (siempre
+                // representa lo visible). Fallback raro: cache vacío.
+                let cursor = state.cursor;
+                // Click-to-focus: si el click cae sobre un nodo enfocable,
+                // el runtime le da el foco ANTES de procesar la acción de
+                // click. Extraemos el id en un scope (suelta el borrow del
+                // cache) y recién después mutamos el foco/modelo.
+                let focus_hit = state
+                    .last_render
+                    .as_ref()
+                    .and_then(|cache| {
+                        let (m, c) = match cache.overlay.as_ref() {
+                            Some(ov) => (&ov.mounted, &ov.computed),
+                            None => (&cache.mounted, &cache.computed),
+                        };
+                        hit_test_focusable(m, c, cursor.x as f32, cursor.y as f32)
+                    });
+                if focus_hit.is_some() && focus_hit != state.focused {
+                    state.focused = focus_hit;
+                    if let Some(msg) =
+                        A::on_focus(state.model.as_ref().expect("model"), focus_hit)
+                    {
+                        let model = state.model.take().expect("model");
+                        state.model = Some(A::update(model, msg, &self.handle));
+                    }
+                    state.last_render = None;
+                }
+                // Tupla: (drag_fn, drag_at_fn, payload, on_click_msg,
+                //         on_click_at_handler, rect: (x, y, w, h))
+                type HitInfo<M> = (
+                    Option<DragFn<M>>,
+                    Option<DragAtFn<M>>,
+                    Option<u64>,
+                    Option<M>,
+                    Option<ClickAtFn<M>>,
+                    Option<(f32, f32, f32, f32)>,
+                );
+                let lookup_hit = |m: &Mounted<A::Msg>, c: &ComputedLayout| -> Option<HitInfo<A::Msg>> {
+                    hit_test_click(m, c, cursor.x as f32, cursor.y as f32).map(|i| {
+                        let node = &m.nodes[i];
+                        let rect = c.get(node.id).map(|r| (r.x, r.y, r.w, r.h));
+                        (
+                            node.drag.clone(),
+                            node.drag_at.clone(),
+                            node.drag_payload,
+                            node.on_click.clone(),
+                            node.on_click_at.clone(),
+                            rect,
+                        )
+                    })
+                };
+                // Con overlay activo, los clicks van EXCLUSIVAMENTE a él.
+                // Si el cursor cae sobre un nodo del overlay sin handler,
+                // el click se descarta — la convención de "scrim que
+                // dismissa" pide que la app meta su propio fondo
+                // clicable con `on_click = DismissOverlay`.
+                let idx_and_action: Option<HitInfo<A::Msg>> = if let Some(cache) =
+                    state.last_render.as_ref()
+                {
+                    if let Some(ov) = cache.overlay.as_ref() {
+                        lookup_hit(&ov.mounted, &ov.computed)
+                    } else {
+                        lookup_hit(&cache.mounted, &cache.computed)
+                    }
+                } else {
+                    let model_ref = state.model.as_ref().expect("model");
+                    let view = A::view(model_ref);
+                    let overlay_view = A::view_overlay(model_ref);
+                    let mut layout = LayoutTree::new();
+                    let mounted: Mounted<A::Msg> = mount(&mut layout, view);
+                    let (w, h) = state.surface.size();
+                    let ts = &mut state.typesetter;
+                    let computed = {
+                        let tmap = &mounted.text_measures;
+                        layout
+                            .compute_with_measure(mounted.root, (w as f32, h as f32), |nid, known, avail| {
+                                match tmap.get(&nid) {
+                                    Some(tm) => measure_text_node(ts, tm, known, avail),
+                                    None => llimphi_layout::taffy::Size::ZERO,
+                                }
+                            })
+                            .expect("layout")
+                    };
+                    if let Some(ov) = overlay_view {
+                        let mut olay = LayoutTree::new();
+                        let omounted: Mounted<A::Msg> = mount(&mut olay, ov);
+                        let ocomp = {
+                            let tmap = &omounted.text_measures;
+                            olay
+                                .compute_with_measure(omounted.root, (w as f32, h as f32), |nid, known, avail| {
+                                    match tmap.get(&nid) {
+                                        Some(tm) => measure_text_node(ts, tm, known, avail),
+                                        None => llimphi_layout::taffy::Size::ZERO,
+                                    }
+                                })
+                                .expect("layout overlay")
+                        };
+                        lookup_hit(&omounted, &ocomp)
+                    } else {
+                        lookup_hit(&mounted, &computed)
+                    }
+                };
+                // drag_at + on_click_at COEXISTEN: el press dispara
+                // on_click_at (si está) y arranca un drag rastreado con la
+                // posición inicial. Diseño pensado para canvas elements
+                // que necesitan select-on-press + move-on-drag.
+                //
+                // En cambio, `drag` simple (sin _at) mantiene la semántica
+                // antigua: gana exclusivo sobre on_click.
+                if let Some((_, Some(handler_at), payload, _, click_at, Some((ox, oy, rw, rh)))) =
+                    &idx_and_action
+                {
+                    let lx0 = cursor.x as f32 - ox;
+                    let ly0 = cursor.y as f32 - oy;
+                    // Disparar on_click_at en el press (si también está).
+                    if let Some(click_at_h) = click_at {
+                        if let Some(msg) = click_at_h(lx0, ly0, *rw, *rh) {
+                            let model = state.model.take().expect("model");
+                            state.model = Some(A::update(model, msg, &self.handle));
+                            state.last_render = None;
+                        }
+                    }
+                    state.drag = Some(DragState {
+                        handler: DragHandlerKind::DeltaAt(handler_at.clone(), lx0, ly0),
+                        last_cursor: cursor,
+                        payload: *payload,
+                    });
+                    state.window.request_redraw();
+                } else if let Some((Some(handler), _, payload, _, _, _)) = &idx_and_action {
+                    state.drag = Some(DragState {
+                        handler: DragHandlerKind::Delta(handler.clone()),
+                        last_cursor: cursor,
+                        payload: *payload,
+                    });
+                    // Si hay payload, repintar para que el drop target
+                    // bajo cursor (si lo hay) se ilumine de entrada.
+                    if payload.is_some() {
+                        if let Some(cache) = state.last_render.as_mut() {
+                            let new_drop = hit_test_drop(
+                                &cache.mounted,
+                                &cache.computed,
+                                cursor.x as f32,
+                                cursor.y as f32,
+                            );
+                            if new_drop != cache.drop_hover_idx {
+                                cache.drop_hover_idx = new_drop;
+                                state.window.request_redraw();
+                            }
+                        }
+                    }
+                } else if let Some((_, _, _, _, Some(handler), Some((ox, oy, rw, rh)))) =
+                    &idx_and_action
+                {
+                    // on_click_at gana sobre on_click si ambos existen.
+                    let lx = cursor.x as f32 - ox;
+                    let ly = cursor.y as f32 - oy;
+                    if let Some(msg) = handler(lx, ly, *rw, *rh) {
+                        let model = state.model.take().expect("model");
+                        state.model = Some(A::update(model, msg, &self.handle));
+                        state.last_render = None;
+                        state.window.request_redraw();
+                    }
+                } else if let Some((_, _, _, Some(msg), _, _)) = idx_and_action {
+                    let model = state.model.take().expect("model");
+                    state.model = Some(A::update(model, msg, &self.handle));
+                    state.last_render = None;
+                    state.window.request_redraw();
+                }
+            }
+            WindowEvent::MouseInput {
+                state: ElementState::Pressed,
+                button: MouseButton::Middle,
+                ..
+            } => {
+                // Middle-click: dispatcha `on_middle_click` del nodo
+                // bajo cursor si lo declaró. La capa overlay tiene
+                // prioridad (mismo razonamiento que el left/right click).
+                let cursor = state.cursor;
+                let lookup =
+                    |m: &Mounted<A::Msg>, c: &ComputedLayout| -> Option<A::Msg> {
+                        hit_test_middle_click(m, c, cursor.x as f32, cursor.y as f32)
+                            .and_then(|i| m.nodes[i].on_middle_click.clone())
+                    };
+                let msg = if let Some(cache) = state.last_render.as_ref() {
+                    if let Some(ov) = cache.overlay.as_ref() {
+                        lookup(&ov.mounted, &ov.computed)
+                    } else {
+                        lookup(&cache.mounted, &cache.computed)
+                    }
+                } else {
+                    None
+                };
+                if let Some(msg) = msg {
+                    let model = state.model.take().expect("model");
+                    state.model = Some(A::update(model, msg, &self.handle));
+                    state.last_render = None;
+                    state.window.request_redraw();
+                }
+            }
+            WindowEvent::MouseInput {
+                state: ElementState::Pressed,
+                button: MouseButton::Right,
+                ..
+            } => {
+                // Right-click: dispatcheamos `on_right_click` o
+                // `on_right_click_at` del nodo bajo cursor. La capa
+                // overlay tiene prioridad (mismo razonamiento que el
+                // left-click). Nodos sin handler de right-click no
+                // reaccionan — no "filtramos" al left.
+                let cursor = state.cursor;
+                let lookup =
+                    |m: &Mounted<A::Msg>, c: &ComputedLayout| -> Option<(Option<A::Msg>, Option<ClickAtFn<A::Msg>>, (f32, f32, f32, f32))> {
+                        hit_test_right_click(m, c, cursor.x as f32, cursor.y as f32).map(|i| {
+                            let node = &m.nodes[i];
+                            let rect = c
+                                .get(node.id)
+                                .map(|r| (r.x, r.y, r.w, r.h))
+                                .unwrap_or((0.0, 0.0, 0.0, 0.0));
+                            (
+                                node.on_right_click.clone(),
+                                node.on_right_click_at.clone(),
+                                rect,
+                            )
+                        })
+                    };
+                let hit = if let Some(cache) = state.last_render.as_ref() {
+                    if let Some(ov) = cache.overlay.as_ref() {
+                        lookup(&ov.mounted, &ov.computed)
+                    } else {
+                        lookup(&cache.mounted, &cache.computed)
+                    }
+                } else {
+                    None
+                };
+                if let Some((msg_opt, at_opt, (ox, oy, rw, rh))) = hit {
+                    let msg = if let Some(handler) = at_opt {
+                        handler(
+                            cursor.x as f32 - ox,
+                            cursor.y as f32 - oy,
+                            rw,
+                            rh,
+                        )
+                    } else {
+                        msg_opt
+                    };
+                    if let Some(msg) = msg {
+                        let model = state.model.take().expect("model");
+                        state.model = Some(A::update(model, msg, &self.handle));
+                        state.last_render = None;
+                        state.window.request_redraw();
+                    }
+                }
+            }
+            WindowEvent::MouseInput {
+                state: ElementState::Released,
+                button: MouseButton::Left,
+                ..
+            } => {
+                if let Some(drag) = state.drag.take() {
+                    let cursor = state.cursor;
+                    // 1. Drop: si hay payload + drop target bajo cursor,
+                    //    invocamos su handler. El Msg resultante se aplica
+                    //    ANTES del End del drag — la convención es "drop
+                    //    primero, cleanup del drag después".
+                    if let Some(payload) = drag.payload {
+                        if let Some(cache) = state.last_render.as_ref() {
+                            if let Some(idx) = hit_test_drop(
+                                &cache.mounted,
+                                &cache.computed,
+                                cursor.x as f32,
+                                cursor.y as f32,
+                            ) {
+                                if let Some(drop_h) =
+                                    cache.mounted.nodes[idx].on_drop.clone()
+                                {
+                                    if let Some(msg) = (drop_h)(payload) {
+                                        let model = state.model.take().expect("model");
+                                        state.model = Some(A::update(model, msg, &self.handle));
+                                    }
+                                }
+                            }
+                        }
+                    }
+                    // 2. Cierre del drag.
+                    let end_msg = match &drag.handler {
+                        DragHandlerKind::Delta(h) => h(DragPhase::End, 0.0, 0.0),
+                        DragHandlerKind::DeltaAt(h, lx0, ly0) => {
+                            h(DragPhase::End, 0.0, 0.0, *lx0, *ly0)
+                        }
+                    };
+                    if let Some(msg) = end_msg {
+                        let model = state.model.take().expect("model");
+                        state.model = Some(A::update(model, msg, &self.handle));
+                    }
+                    // Cache invalidado siempre — hover/drop pueden cambiar
+                    // y el modelo posiblemente mutó.
+                    state.last_render = None;
+                    state.window.request_redraw();
+                }
+            }
+            WindowEvent::RedrawRequested => {
+                // Título dinámico (App::window_title): si cambió respecto del
+                // último aplicado, se lo pasamos a winit. Barato: una
+                // comparación de String por frame, set_title sólo en el cambio.
+                if let Some(t) = A::window_title(state.model.as_ref().expect("model")) {
+                    if state.last_title.as_deref() != Some(t.as_str()) {
+                        state.window.set_title(&t);
+                        state.last_title = Some(t);
+                    }
+                }
+                // Posicioná la ventana de candidatos del IME junto al caret
+                // (sólo con IME activo y si la app reporta el área).
+                if A::ime_allowed() {
+                    if let Some((x, y, w, h)) =
+                        A::ime_cursor_area(state.model.as_ref().expect("model"))
+                    {
+                        state.window.set_ime_cursor_area(
+                            PhysicalPosition::new(x as f64, y as f64),
+                            llimphi_hal::winit::dpi::PhysicalSize::new(
+                                w.max(1.0) as u32,
+                                h.max(1.0) as u32,
+                            ),
+                        );
+                    }
+                }
+                let frame = match state.surface.acquire() {
+                    Ok(f) => f,
+                    Err(_) => {
+                        let (w, h) = state.surface.size();
+                        state.surface.resize(w, h);
+                        state.window.request_redraw();
+                        return;
+                    }
+                };
+                let (w, h) = frame.size();
+                let model_ref = state.model.as_ref().expect("model");
+                let view = A::view(model_ref);
+                let overlay_view = A::view_overlay(model_ref);
+                // Reusamos los árboles de layout del runtime: `clear()` +
+                // `mount` evita re-allocar el slotmap de taffy por frame.
+                state.layout.clear();
+                let mounted: Mounted<A::Msg> = mount(&mut state.layout, view);
+                let computed = {
+                    let ts = &mut state.typesetter;
+                    let tmap = &mounted.text_measures;
+                    state
+                        .layout
+                        .compute_with_measure(mounted.root, (w as f32, h as f32), |nid, known, avail| {
+                            match tmap.get(&nid) {
+                                Some(tm) => measure_text_node(ts, tm, known, avail),
+                                None => llimphi_layout::taffy::Size::ZERO,
+                            }
+                        })
+                        .expect("layout")
+                };
+                // Mount + layout del overlay en un árbol aparte. Lo
+                // computamos con el mismo tamaño de viewport para que
+                // un scrim a percent(1.0) cubra toda la pantalla.
+                let overlay_built = if let Some(v) = overlay_view {
+                    state.overlay_layout.clear();
+                    let omounted: Mounted<A::Msg> = mount(&mut state.overlay_layout, v);
+                    let ocomputed = {
+                        let ts = &mut state.typesetter;
+                        let tmap = &omounted.text_measures;
+                        state
+                            .overlay_layout
+                            .compute_with_measure(omounted.root, (w as f32, h as f32), |nid, known, avail| {
+                                match tmap.get(&nid) {
+                                    Some(tm) => measure_text_node(ts, tm, known, avail),
+                                    None => llimphi_layout::taffy::Size::ZERO,
+                                }
+                            })
+                            .expect("layout overlay")
+                    };
+                    let ohover = hit_test_hover(
+                        &omounted,
+                        &ocomputed,
+                        state.cursor.x as f32,
+                        state.cursor.y as f32,
+                    );
+                    Some(OverlayCache {
+                        mounted: omounted,
+                        computed: ocomputed,
+                        hover_idx: ohover,
+                    })
+                } else {
+                    None
+                };
+                // Hover en el main solo si NO hay overlay — durante un
+                // menú abierto, el fondo no debe reaccionar al ratón.
+                let hover_idx = if overlay_built.is_some() {
+                    None
+                } else {
+                    hit_test_hover(
+                        &mounted,
+                        &computed,
+                        state.cursor.x as f32,
+                        state.cursor.y as f32,
+                    )
+                };
+                // Drop hover sólo si hay drag activo con payload (un
+                // drag bloquea el overlay; rara combinación pero la
+                // resolvemos a favor del drag).
+                let drop_hover_idx = state
+                    .drag
+                    .as_ref()
+                    .and_then(|d| d.payload.map(|_| ()))
+                    .and_then(|_| {
+                        hit_test_drop(
+                            &mounted,
+                            &computed,
+                            state.cursor.x as f32,
+                            state.cursor.y as f32,
+                        )
+                    });
+                // Z-order del overlay sobre contenido `gpu_paint`: si el
+                // árbol principal tiene painters gpu (p. ej. el video de
+                // media) Y hay un overlay activo, el overlay NO va en la
+                // escena principal (quedaría debajo del blit gpu). Se
+                // rasteriza aparte sobre fondo transparente y se compone con
+                // alpha DESPUÉS del pase gpu. Sin gpu o sin overlay, el camino
+                // de siempre (overlay en la escena principal) — coste cero.
+                let composite_overlay =
+                    overlay_built.is_some() && has_gpu_painter(&mounted);
+
+                state.scene.reset();
+                paint(
+                    &mut state.scene,
+                    &mounted,
+                    &computed,
+                    &mut state.typesetter,
+                    hover_idx,
+                    drop_hover_idx,
+                );
+                if !composite_overlay {
+                    if let Some(ov) = overlay_built.as_ref() {
+                        paint(
+                            &mut state.scene,
+                            &ov.mounted,
+                            &ov.computed,
+                            &mut state.typesetter,
+                            ov.hover_idx,
+                            None,
+                        );
+                    }
+                }
+                if let Err(e) = state.renderer.render(
+                    &state.hal,
+                    &state.scene,
+                    &frame,
+                    palette::css::BLACK,
+                ) {
+                    eprintln!("render error: {e}");
+                }
+                let (vw, vh) = frame.size();
+                // Capa de overlay aparte (camino composite): vello la
+                // rasteriza con fondo transparente en `frame.overlay_view()`.
+                // Se renderiza ANTES del pase gpu para que el blit del
+                // compositor (en `gpu_encoder`) la lea ya escrita.
+                if composite_overlay {
+                    if let Some(ov) = overlay_built.as_ref() {
+                        state.scene.reset();
+                        paint(
+                            &mut state.scene,
+                            &ov.mounted,
+                            &ov.computed,
+                            &mut state.typesetter,
+                            ov.hover_idx,
+                            None,
+                        );
+                        if let Err(e) = state.renderer.render_to_view(
+                            &state.hal,
+                            &state.scene,
+                            frame.overlay_view(),
+                            vw,
+                            vh,
+                            palette::css::TRANSPARENT,
+                        ) {
+                            eprintln!("render overlay error: {e}");
+                        }
+                    }
+                }
+                // Pasada GPU directo (Fase 1 del SDD §"GPU directo wgpu"):
+                // si algún View del main o del overlay registró un
+                // `gpu_painter`, ejecutamos todos sus callbacks contra un
+                // único `CommandEncoder`, encima de lo que vello acaba de
+                // pintar sobre la intermediate. Submitimos antes del
+                // present para que el blit al swapchain incluya las
+                // primitivas GPU. Si nadie usó el hook, no se crea ni
+                // submitea nada — coste cero.
+                let mut gpu_encoder = state.hal.device.create_command_encoder(
+                    &llimphi_hal::wgpu::CommandEncoderDescriptor {
+                        label: Some("llimphi-ui-gpu-paint"),
+                    },
+                );
+                let viewport = frame.size();
+                let mut any_gpu = paint_gpu(
+                    &mounted,
+                    &computed,
+                    &state.hal.device,
+                    &state.hal.queue,
+                    &mut gpu_encoder,
+                    frame.view(),
+                    viewport,
+                );
+                if let Some(ov) = overlay_built.as_ref() {
+                    // En el camino composite, los painters gpu del overlay van
+                    // sobre SU textura; si no, sobre la intermedia.
+                    let target = if composite_overlay {
+                        frame.overlay_view()
+                    } else {
+                        frame.view()
+                    };
+                    any_gpu |= paint_gpu(
+                        &ov.mounted,
+                        &ov.computed,
+                        &state.hal.device,
+                        &state.hal.queue,
+                        &mut gpu_encoder,
+                        target,
+                        viewport,
+                    );
+                }
+                // Composición alpha del overlay SOBRE la intermedia (que ya
+                // tiene UI + video). Último pase del encoder → corre después
+                // del blit del video. Garantiza menús por encima del video.
+                if composite_overlay {
+                    state.overlay_compositor.composite(
+                        &state.hal.device,
+                        &mut gpu_encoder,
+                        frame.view(),
+                        frame.overlay_view(),
+                    );
+                    any_gpu = true;
+                }
+                if any_gpu {
+                    state
+                        .hal
+                        .queue
+                        .submit(std::iter::once(gpu_encoder.finish()));
+                }
+                state.surface.present(frame, &state.hal);
+                state.last_render = Some(RenderCache {
+                    mounted,
+                    computed,
+                    hover_idx,
+                    drop_hover_idx,
+                    overlay: overlay_built,
+                });
+            }
+            _ => {}
+        }
+    }
+}
+
+// ── Ventanas secundarias (multiventana, opt-in) ──────────────────────────────
+// Path APARTE del de la primaria: comparten modelo (vive en `self.state`) y
+// `Hal`/`Renderer`, pero cada secundaria lleva su surface + caches. Sin
+// overlay ni foco (la config no los necesita); se puede ampliar luego.
+impl<A: App> Runtime<A> {
+    /// Aplica un Msg al modelo (que vive en la primaria) e invalida + repinta
+    /// TODAS las ventanas. Es el camino de cualquier evento de una secundaria,
+    /// así un cambio hecho en la config se refleja al toque en el reproductor
+    /// (y viceversa, vía los ticks que pasan por `user_event`).
+    fn dispatch_model(&mut self, msg: A::Msg) {
+        if let Some(prim) = self.state.as_mut() {
+            let model = prim.model.take().expect("model");
+            prim.model = Some(A::update(model, msg, &self.handle));
+            prim.last_render = None;
+            prim.window.request_redraw();
+        }
+        // OJO: NO repintamos las secundarias acá. `dispatch_model` corre en
+        // cada Msg (incluido el tick ~33 fps), y repintar una secundaria por
+        // tick serializaba dos `acquire()` de swapchain en Wayland FIFO →
+        // ralentización y cuelgue. Cada secundaria se repinta sola al
+        // interactuar con ella (`handle_secondary_event` llama
+        // `render_secondary` tras un cambio) y en su `RedrawRequested` del
+        // compositor (expose/resize). El modelo igual quedó actualizado, así
+        // que el próximo repintado de la secundaria refleja el cambio.
+    }
+
+    /// Despacha un Msg y repinta la secundaria `idx` en el acto (si sigue
+    /// viva). El camino de los eventos de una secundaria: como su
+    /// `request_redraw` no dispara `RedrawRequested` en algunos compositores,
+    /// la pintamos directo tras el cambio.
+    fn dispatch_and_render_secondary(&mut self, idx: usize, msg: A::Msg) {
+        self.dispatch_model(msg);
+        if idx < self.secondaries.len() {
+            self.render_secondary(idx);
+        }
+    }
+
+    /// Crea una ventana OS secundaria (o enfoca la existente con esa key). Toma
+    /// el `Hal` de la primaria — no levanta un segundo device GPU.
+    fn open_secondary(
+        &mut self,
+        event_loop: &ActiveEventLoop,
+        key: u64,
+        title: String,
+        width: u32,
+        height: u32,
+    ) {
+        if let Some(sec) = self.secondaries.iter().find(|s| s.key == key) {
+            sec.window.focus_window();
+            return;
+        }
+        let Some(prim) = self.state.as_ref() else {
+            return; // no hay primaria todavía (no debería pasar)
+        };
+        let attrs = WindowAttributes::default()
+            .with_title(title)
+            .with_inner_size(LogicalSize::new(width, height));
+        let window = match event_loop.create_window(attrs) {
+            Ok(w) => Arc::new(w),
+            Err(e) => {
+                eprintln!("open_window: no pude crear la ventana: {e}");
+                return;
+            }
+        };
+        let surface = match WinitSurface::new(&prim.hal, window.clone()) {
+            Ok(s) => s,
+            Err(e) => {
+                eprintln!("open_window: no pude crear la surface: {e}");
+                return;
+            }
+        };
+        window.request_redraw();
+        self.secondaries.push(SecondaryState {
+            key,
+            window,
+            surface,
+            scene: vello::Scene::new(),
+            typesetter: llimphi_text::Typesetter::new(),
+            layout: LayoutTree::new(),
+            cursor: PhysicalPosition::new(0.0, 0.0),
+            modifiers: Modifiers::default(),
+            last_render: None,
+            hovered: None,
+            drag: None,
+            last_title: None,
+        });
+    }
+
+    /// Pinta la ventana secundaria `idx` con `A::secondary_view`. Reusa el
+    /// `Hal`/`Renderer` de la primaria; camino simple (sin overlay ni
+    /// composite gpu de menús), pero soporta `gpu_paint` por si el contenido
+    /// lo usa.
+    fn render_secondary(&mut self, idx: usize) {
+        let key = self.secondaries[idx].key;
+        let Some(prim) = self.state.as_mut() else {
+            return;
+        };
+        // Título dinámico de la secundaria.
+        if let Some(t) = A::secondary_title(prim.model.as_ref().expect("model"), key) {
+            let sec = &mut self.secondaries[idx];
+            if sec.last_title.as_deref() != Some(t.as_str()) {
+                sec.window.set_title(&t);
+                sec.last_title = Some(t);
+            }
+        }
+        let view = A::secondary_view(prim.model.as_ref().expect("model"), key)
+            .unwrap_or_else(|| View::new(Default::default()));
+        let hal = &prim.hal;
+        let renderer = &mut prim.renderer;
+        let sec = &mut self.secondaries[idx];
+
+        let frame = match sec.surface.acquire() {
+            Ok(f) => f,
+            Err(_) => {
+                let (w, h) = sec.surface.size();
+                sec.surface.resize(w, h);
+                sec.window.request_redraw();
+                return;
+            }
+        };
+        let (w, h) = frame.size();
+        sec.layout.clear();
+        let mounted: Mounted<A::Msg> = mount(&mut sec.layout, view);
+        let computed = {
+            let ts = &mut sec.typesetter;
+            let tmap = &mounted.text_measures;
+            sec.layout
+                .compute_with_measure(mounted.root, (w as f32, h as f32), |nid, known, avail| {
+                    match tmap.get(&nid) {
+                        Some(tm) => measure_text_node(ts, tm, known, avail),
+                        None => llimphi_layout::taffy::Size::ZERO,
+                    }
+                })
+                .expect("layout secundario")
+        };
+        let hover_idx = hit_test_hover(&mounted, &computed, sec.cursor.x as f32, sec.cursor.y as f32);
+        let drop_hover_idx = sec
+            .drag
+            .as_ref()
+            .and_then(|d| d.payload)
+            .and_then(|_| hit_test_drop(&mounted, &computed, sec.cursor.x as f32, sec.cursor.y as f32));
+        sec.scene.reset();
+        paint(
+            &mut sec.scene,
+            &mounted,
+            &computed,
+            &mut sec.typesetter,
+            hover_idx,
+            drop_hover_idx,
+        );
+        if let Err(e) = renderer.render(hal, &sec.scene, &frame, palette::css::BLACK) {
+            eprintln!("render secundario error: {e}");
+        }
+        // gpu_paint del contenido de la secundaria (si lo hubiera).
+        let mut enc = hal
+            .device
+            .create_command_encoder(&llimphi_hal::wgpu::CommandEncoderDescriptor {
+                label: Some("llimphi-ui-sec-gpu"),
+            });
+        let viewport = frame.size();
+        let any = paint_gpu(
+            &mounted,
+            &computed,
+            &hal.device,
+            &hal.queue,
+            &mut enc,
+            frame.view(),
+            viewport,
+        );
+        if any {
+            hal.queue.submit(std::iter::once(enc.finish()));
+        }
+        sec.surface.present(frame, hal);
+        let _ = (hover_idx, drop_hover_idx); // se usaron al pintar; no se cachean
+        sec.last_render = Some(SecRenderCache { mounted, computed });
+    }
+
+    /// Atiende un evento de la ventana secundaria `idx`. Subconjunto de lo que
+    /// hace la primaria (sin overlay/foco/IME): render, resize, cierre, hover,
+    /// click, drag, teclado y rueda — suficiente para un panel de config.
+    fn handle_secondary_event(&mut self, idx: usize, event: WindowEvent) {
+        match event {
+            WindowEvent::CloseRequested => {
+                let key = self.secondaries[idx].key;
+                let msg = self
+                    .state
+                    .as_ref()
+                    .and_then(|p| A::on_secondary_close(p.model.as_ref().expect("model"), key));
+                self.secondaries.remove(idx);
+                if let Some(msg) = msg {
+                    self.dispatch_model(msg);
+                }
+            }
+            WindowEvent::Resized(size) => {
+                self.secondaries[idx].surface.resize(size.width, size.height);
+                self.render_secondary(idx);
+            }
+            WindowEvent::ScaleFactorChanged { .. } => {
+                self.render_secondary(idx);
+            }
+            WindowEvent::RedrawRequested => {
+                self.render_secondary(idx);
+            }
+            WindowEvent::ModifiersChanged(mods) => {
+                self.secondaries[idx].modifiers = mods.state().into();
+            }
+            WindowEvent::CursorMoved { position, .. } => {
+                let mut drag_msg: Option<A::Msg> = None;
+                let mut redraw = false;
+                {
+                    let sec = &mut self.secondaries[idx];
+                    sec.cursor = position;
+                    if let Some(drag) = sec.drag.as_mut() {
+                        let dx = (position.x - drag.last_cursor.x) as f32;
+                        let dy = (position.y - drag.last_cursor.y) as f32;
+                        drag.last_cursor = position;
+                        if dx != 0.0 || dy != 0.0 {
+                            drag_msg = match &drag.handler {
+                                DragHandlerKind::Delta(h) => h(DragPhase::Move, dx, dy),
+                                DragHandlerKind::DeltaAt(h, lx0, ly0) => {
+                                    h(DragPhase::Move, dx, dy, *lx0, *ly0)
+                                }
+                            };
+                        }
+                        redraw = true;
+                    } else {
+                        let new_hover = sec.last_render.as_ref().and_then(|c| {
+                            hit_test_hover(&c.mounted, &c.computed, position.x as f32, position.y as f32)
+                        });
+                        if new_hover != sec.hovered {
+                            sec.hovered = new_hover;
+                            redraw = true;
+                        }
+                    }
+                }
+                if let Some(msg) = drag_msg {
+                    self.dispatch_and_render_secondary(idx, msg);
+                } else if redraw {
+                    self.render_secondary(idx);
+                }
+            }
+            WindowEvent::MouseInput {
+                state: ElementState::Pressed,
+                button: MouseButton::Left,
+                ..
+            } => {
+                type SecHit<M> = (
+                    Option<DragFn<M>>,
+                    Option<DragAtFn<M>>,
+                    Option<u64>,
+                    Option<M>,
+                    Option<ClickAtFn<M>>,
+                    Option<(f32, f32, f32, f32)>,
+                );
+                let cursor = self.secondaries[idx].cursor;
+                let hit: Option<SecHit<A::Msg>> = {
+                    let sec = &self.secondaries[idx];
+                    sec.last_render.as_ref().and_then(|c| {
+                        hit_test_click(&c.mounted, &c.computed, cursor.x as f32, cursor.y as f32).map(
+                            |i| {
+                                let node = &c.mounted.nodes[i];
+                                let rect = c.computed.get(node.id).map(|r| (r.x, r.y, r.w, r.h));
+                                (
+                                    node.drag.clone(),
+                                    node.drag_at.clone(),
+                                    node.drag_payload,
+                                    node.on_click.clone(),
+                                    node.on_click_at.clone(),
+                                    rect,
+                                )
+                            },
+                        )
+                    })
+                };
+                // Misma prioridad que la primaria: drag_at + on_click_at, luego
+                // drag simple, luego on_click_at, luego on_click.
+                match hit {
+                    Some((_, Some(handler_at), payload, _, click_at, Some((ox, oy, rw, rh)))) => {
+                        let lx0 = cursor.x as f32 - ox;
+                        let ly0 = cursor.y as f32 - oy;
+                        if let Some(h) = click_at {
+                            if let Some(msg) = h(lx0, ly0, rw, rh) {
+                                self.dispatch_model(msg);
+                            }
+                        }
+                        self.secondaries[idx].drag = Some(DragState {
+                            handler: DragHandlerKind::DeltaAt(handler_at, lx0, ly0),
+                            last_cursor: cursor,
+                            payload,
+                        });
+                        self.render_secondary(idx);
+                    }
+                    Some((Some(handler), _, payload, _, _, _)) => {
+                        self.secondaries[idx].drag = Some(DragState {
+                            handler: DragHandlerKind::Delta(handler),
+                            last_cursor: cursor,
+                            payload,
+                        });
+                        self.render_secondary(idx);
+                    }
+                    Some((_, _, _, _, Some(handler), Some((ox, oy, rw, rh)))) => {
+                        let lx = cursor.x as f32 - ox;
+                        let ly = cursor.y as f32 - oy;
+                        if let Some(msg) = handler(lx, ly, rw, rh) {
+                            self.dispatch_and_render_secondary(idx, msg);
+                        }
+                    }
+                    Some((_, _, _, Some(msg), _, _)) => {
+                        self.dispatch_and_render_secondary(idx, msg);
+                    }
+                    _ => {}
+                }
+            }
+            WindowEvent::MouseInput {
+                state: ElementState::Released,
+                button: MouseButton::Left,
+                ..
+            } => {
+                let cursor = self.secondaries[idx].cursor;
+                let drag = self.secondaries[idx].drag.take();
+                if let Some(drag) = drag {
+                    // Drop primero (si hay payload + target), luego End.
+                    if let Some(payload) = drag.payload {
+                        let drop_h = self.secondaries[idx].last_render.as_ref().and_then(|c| {
+                            hit_test_drop(&c.mounted, &c.computed, cursor.x as f32, cursor.y as f32)
+                                .and_then(|i| c.mounted.nodes[i].on_drop.clone())
+                        });
+                        if let Some(h) = drop_h {
+                            if let Some(msg) = h(payload) {
+                                self.dispatch_model(msg);
+                            }
+                        }
+                    }
+                    let end_msg = match &drag.handler {
+                        DragHandlerKind::Delta(h) => h(DragPhase::End, 0.0, 0.0),
+                        DragHandlerKind::DeltaAt(h, lx0, ly0) => h(DragPhase::End, 0.0, 0.0, *lx0, *ly0),
+                    };
+                    if let Some(msg) = end_msg {
+                        self.dispatch_model(msg);
+                    }
+                    self.render_secondary(idx);
+                }
+            }
+            WindowEvent::MouseWheel { delta, .. } => {
+                let wd = match delta {
+                    MouseScrollDelta::LineDelta(x, y) => WheelDelta { x, y: -y },
+                    MouseScrollDelta::PixelDelta(p) => WheelDelta {
+                        x: (p.x as f32) / 20.0,
+                        y: -(p.y as f32) / 20.0,
+                    },
+                };
+                let cursor = self.secondaries[idx].cursor;
+                let handler = {
+                    let sec = &self.secondaries[idx];
+                    sec.last_render.as_ref().and_then(|c| {
+                        hit_test_scroll(&c.mounted, &c.computed, cursor.x as f32, cursor.y as f32)
+                            .and_then(|i| c.mounted.nodes[i].on_scroll.clone())
+                    })
+                };
+                if let Some(msg) = handler.and_then(|h| h(wd.x, wd.y)) {
+                    self.dispatch_and_render_secondary(idx, msg);
+                }
+            }
+            WindowEvent::KeyboardInput { event, .. } => {
+                let ev = KeyEvent {
+                    key: event.logical_key.clone(),
+                    state: match event.state {
+                        ElementState::Pressed => KeyState::Pressed,
+                        ElementState::Released => KeyState::Released,
+                    },
+                    text: event.text.as_ref().map(|t| t.to_string()),
+                    modifiers: self.secondaries[idx].modifiers,
+                    repeat: event.repeat,
+                };
+                let msg = self
+                    .state
+                    .as_ref()
+                    .and_then(|p| A::on_key(p.model.as_ref().expect("model"), &ev));
+                if let Some(msg) = msg {
+                    self.dispatch_and_render_secondary(idx, msg);
+                }
+            }
+            _ => {}
+        }
+    }
+}
diff --git a/llimphi-ui/src/lib.rs b/llimphi-ui/src/lib.rs
new file mode 100644
index 0000000..304dbf7
--- /dev/null
+++ b/llimphi-ui/src/lib.rs
@@ -0,0 +1,604 @@
+//! llimphi-ui — Runtime Elm sobre winit.
+//!
+//! Maneja el bucle `input → update(model, msg) → view(model) → layout →
+//! raster → present` sobre una ventana winit + GPU (`llimphi-hal` +
+//! `llimphi-raster`). La parte declarativa y winit-agnóstica (el árbol
+//! `View<Msg>`, `mount`, `paint`, hit-test) vive en `llimphi-compositor` y
+//! se re-exporta tal cual, así los consumidores siguen escribiendo
+//! `llimphi_ui::View` sin enterarse del split.
+//!
+//! El estado del [`App`] es inmutable: cada evento produce un `Model`
+//! nuevo. La vista (`view`) es una función pura `&Model -> View<Msg>`.
+
+use std::sync::Arc;
+
+use llimphi_hal::winit::application::ApplicationHandler;
+use llimphi_hal::winit::dpi::{LogicalSize, PhysicalPosition};
+use llimphi_hal::winit::event::{ElementState, MouseButton, MouseScrollDelta, WindowEvent};
+use llimphi_hal::winit::event_loop::{ActiveEventLoop, ControlFlow, EventLoop, EventLoopProxy};
+use llimphi_hal::winit::keyboard::ModifiersState;
+use llimphi_hal::winit::window::{Window, WindowAttributes, WindowId};
+use llimphi_hal::{Hal, Surface, WinitSurface};
+
+pub use llimphi_hal::winit::keyboard::{Key, NamedKey};
+use llimphi_layout::{ComputedLayout, LayoutTree};
+use llimphi_raster::peniko::color::palette;
+use llimphi_raster::{vello, Renderer};
+
+pub use llimphi_hal;
+pub use llimphi_layout;
+pub use llimphi_raster;
+pub use llimphi_text;
+
+// El compositor declarativo (View, mount, paint, hit-test, tipos de
+// handler) se re-exporta entero: `llimphi_ui::View`, `llimphi_ui::DragFn`,
+// etc. siguen resolviendo igual que antes del split.
+pub use llimphi_compositor;
+pub use llimphi_compositor::*;
+
+/// Aplicación Elm: estado inmutable, transición pura, vista pura.
+///
+/// `init` y `update` reciben un [`Handle`] que permite hablar con el runtime
+/// desde dentro de la transición (cerrar la ventana, lanzar trabajo en otro
+/// hilo y reentrar con un Msg al terminar). Mantener la transición pura del
+/// modelo sigue siendo el contrato — `Handle` sólo escala efectos.
+pub trait App: 'static {
+    type Model: 'static;
+    type Msg: Clone + Send + 'static;
+
+    fn init(handle: &Handle<Self::Msg>) -> Self::Model;
+    fn update(model: Self::Model, msg: Self::Msg, handle: &Handle<Self::Msg>) -> Self::Model;
+    fn view(model: &Self::Model) -> View<Self::Msg>;
+
+    /// Maneja una pulsación de tecla. Devuelve `Some(Msg)` para disparar
+    /// una transición; `None` (default) ignora la tecla.
+    fn on_key(_model: &Self::Model, _event: &KeyEvent) -> Option<Self::Msg> {
+        None
+    }
+
+    /// El foco cambió: el runtime movió el foco a `id` (`None` = nada
+    /// enfocado). Pasa al pulsar Tab/Shift+Tab (recorre los nodos
+    /// `View::focusable` en orden de árbol, envolviendo) o al clickear un
+    /// nodo enfocable. La app guarda `id` en su `Model` para (a) pintar el
+    /// focus-ring (`if model.focus == Some(id) { … }` en `view`) y (b)
+    /// rutear el teclado al campo activo desde `on_key`. Devolver
+    /// `Some(Msg)` dispara una transición; `None` (default) ignora.
+    ///
+    /// El foco lo administra el runtime (única fuente de verdad), así que
+    /// Tab y click-to-focus quedan consistentes sin que la app los cablee.
+    fn on_focus(_model: &Self::Model, _id: Option<u64>) -> Option<Self::Msg> {
+        None
+    }
+
+    /// ¿Habilitar IME (input method editor) en esta ventana? Default
+    /// `false`. Con IME activo, el texto compuesto (CJK, acentos muertos,
+    /// emoji picker) llega por [`App::on_ime`] como `Commit`, **no** por
+    /// `KeyEvent.text` — por eso es opt-in: las apps que sólo leen
+    /// `on_key` siguen funcionando igual. Las que editan texto
+    /// (`text-input`, `text-editor`) la activan e implementan `on_ime`.
+    fn ime_allowed() -> bool {
+        false
+    }
+
+    /// Maneja un evento de IME (sólo llega si [`App::ime_allowed`] es
+    /// `true`). El flujo típico: `Enabled` → uno o más `Preedit` (texto en
+    /// composición, a pintar subrayado en el caret) → `Commit(texto)` (el
+    /// texto final, a insertar como si se hubiera tecleado) o `Disabled`.
+    /// El `Preedit` no es definitivo: cada uno reemplaza al anterior, y un
+    /// `Commit` o `Preedit` vacío lo cierra. Devolver `Some(Msg)` dispara
+    /// una transición.
+    fn on_ime(_model: &Self::Model, _event: &ImeEvent) -> Option<Self::Msg> {
+        None
+    }
+
+    /// Área del caret en **píxeles físicos** `(x, y, w, h)` para posicionar
+    /// la ventana de candidatos del IME (CJK) junto al cursor de texto. El
+    /// runtime la consulta por frame cuando [`App::ime_allowed`] es `true`.
+    /// `None` (default) deja que el sistema la ubique por defecto.
+    fn ime_cursor_area(_model: &Self::Model) -> Option<(f32, f32, f32, f32)> {
+        None
+    }
+
+    /// Maneja una rueda del mouse. `delta` está normalizado a "líneas"
+    /// (positivo arriba/izquierda, negativo abajo/derecha). En backends
+    /// que reportan píxeles, llimphi-ui divide por 20 para aproximar.
+    fn on_wheel(
+        _model: &Self::Model,
+        _delta: WheelDelta,
+        _cursor: (f32, f32),
+        _modifiers: Modifiers,
+    ) -> Option<Self::Msg> {
+        None
+    }
+
+    /// Capa de overlay opcional. Si devuelve `Some(view)`, el runtime
+    /// la pinta encima del árbol principal y los clicks/hover se
+    /// rutean exclusivamente a ella (el árbol de fondo queda "bajo
+    /// vidrio" hasta que se cierre el overlay). Pensado para menús
+    /// contextuales, diálogos modales, popovers — el patrón usual es
+    /// envolver los items en un scrim a pantalla completa con
+    /// `on_click = DismissOverlay` para que los clicks afuera lo
+    /// cierren.
+    ///
+    /// La transición entre "con overlay" y "sin overlay" la maneja la
+    /// app vía su Model: cuando el state diga "menu abierto",
+    /// `view_overlay` devuelve `Some`; cuando se cierre, `None`.
+    fn view_overlay(_model: &Self::Model) -> Option<View<Self::Msg>> {
+        None
+    }
+
+    /// Maneja un drop de archivo desde el sistema operativo (drag&drop
+    /// desde el file manager hacia la ventana). El runtime invoca este
+    /// callback una vez por archivo soltado — si el usuario suelta varios,
+    /// llega un evento por path. Devolver `Some(Msg)` dispara un update;
+    /// `None` (default) ignora el drop.
+    ///
+    /// Backend: mapea directamente `winit::WindowEvent::DroppedFile(PathBuf)`.
+    /// La posición del drop no se reporta porque winit no la expone hasta
+    /// que el compositor la propague — en Wayland depende del extension
+    /// `data_device_manager`, en X11 viene en el ClientMessage XDND.
+    fn on_file_drop(_model: &Self::Model, _path: std::path::PathBuf) -> Option<Self::Msg> {
+        None
+    }
+
+    /// Maneja un redimensionado de la ventana. `width`/`height` son el
+    /// nuevo tamaño en **píxeles físicos** (lo que reporta
+    /// `winit::WindowEvent::Resized` y lo que recibe la surface). El
+    /// runtime ya reconfiguró la surface y pedirá redraw; este callback
+    /// es para que la app reaccione al nuevo viewport (recalcular layout
+    /// dependiente del tamaño, emitir un evento `resize`, etc.).
+    /// Devolver `Some(Msg)` dispara un update; `None` (default) lo ignora.
+    fn on_resize(_model: &Self::Model, _width: u32, _height: u32) -> Option<Self::Msg> {
+        None
+    }
+
+    /// Maneja un cambio del factor de escala de la ventana (`scale_factor`
+    /// de winit: 1.0 en pantallas normales, 2.0 en HiDPI/Retina, fraccional
+    /// con escalado del compositor). El runtime lo invoca una vez al arrancar
+    /// (con el factor inicial de la ventana, tras `init`) y luego en cada
+    /// `WindowEvent::ScaleFactorChanged` (mover la ventana entre monitores,
+    /// cambiar el escalado del sistema). Es lo que permite, p. ej., que
+    /// `window.devicePixelRatio` refleje el DPI real. Devolver `Some(Msg)`
+    /// dispara un update; `None` (default) lo ignora.
+    fn on_scale_factor(_model: &Self::Model, _scale: f64) -> Option<Self::Msg> {
+        None
+    }
+
+    /// Título de la ventana (sólo se lee al arrancar). Es el título inicial;
+    /// para uno que cambie en runtime, ver [`App::window_title`].
+    fn title() -> &'static str {
+        "llimphi"
+    }
+
+    /// Título **dinámico** de la ventana, derivado del modelo. El runtime lo
+    /// consulta tras cada render y, si cambió, lo aplica con `Window::set_title`
+    /// — así el título de la barra del SO puede reflejar el estado (p. ej. el
+    /// medio que se reproduce). `None` (default) deja el título fijo de
+    /// [`App::title`]; una app que no lo implemente no paga nada.
+    fn window_title(_model: &Self::Model) -> Option<String> {
+        None
+    }
+
+    /// Vista de una ventana OS **secundaria** identificada por `key` (la que
+    /// se pasó a [`Handle::open_window`]). El runtime la pinta en su propia
+    /// ventana y rutea sus eventos al mismo [`App::update`] — comparte modelo
+    /// con la primaria. `None` (default, o para una key desconocida) deja la
+    /// ventana en blanco. Las secundarias NO tienen capa de overlay
+    /// ([`App::view_overlay`] es sólo de la primaria); para diálogos dentro de
+    /// una secundaria, componerlos en su propio `secondary_view`.
+    fn secondary_view(_model: &Self::Model, _key: u64) -> Option<View<Self::Msg>> {
+        None
+    }
+
+    /// Título dinámico de una ventana secundaria (análogo a
+    /// [`App::window_title`] para la primaria). `None` deja el título con el
+    /// que se abrió.
+    fn secondary_title(_model: &Self::Model, _key: u64) -> Option<String> {
+        None
+    }
+
+    /// El usuario cerró una ventana secundaria con el botón del SO. El runtime
+    /// ya la destruyó; este callback es para que la app sincronice su modelo
+    /// (p. ej. marcar el panel como cerrado). Devolver `Some(Msg)` dispara un
+    /// `update`; `None` (default) no hace nada.
+    fn on_secondary_close(_model: &Self::Model, _key: u64) -> Option<Self::Msg> {
+        None
+    }
+
+    /// Identificador de aplicación. En Wayland se mapea al `app_id` del
+    /// xdg-toplevel (lo que el compositor usa para reconocer la ventana,
+    /// p. ej. `carmen.greeter`). `None` deja que el sistema asigne uno.
+    fn app_id() -> Option<&'static str> {
+        None
+    }
+
+    /// Tamaño lógico inicial de la ventana, en píxeles. El usuario puede
+    /// redimensionar después; sólo se lee al arrancar.
+    fn initial_size() -> (u32, u32) {
+        (960, 540)
+    }
+}
+
+/// Mensaje interno del event loop. `Msg` lo dispara la app desde un hilo de
+/// fondo vía [`Handle::dispatch`] o [`Handle::spawn`]; `Quit` cierra la
+/// ventana y termina el proceso.
+pub enum UserEvent<Msg> {
+    Msg(Msg),
+    Quit,
+    /// Pide abrir una ventana OS **secundaria** con la `key` dada (la app la
+    /// usa para distinguir cuál es en [`App::secondary_view`]). Idempotente:
+    /// si ya existe una con esa key, se enfoca en vez de duplicar. La crea el
+    /// event loop (que tiene el `ActiveEventLoop`); por eso va por mensaje.
+    OpenWindow {
+        key: u64,
+        title: String,
+        width: u32,
+        height: u32,
+    },
+    /// Pide cerrar la ventana secundaria con esa `key`. No afecta a la primaria.
+    CloseWindow { key: u64 },
+}
+
+/// Asa al runtime de Llimphi. Clonable y enviable entre hilos: la usás para
+/// pedir cerrar la ventana o para lanzar trabajo (PAM, IO, etc.) que al
+/// terminar reentra con un Msg al `update`.
+///
+/// Tests pueden construir un handle "muerto" con [`Handle::for_test`]: los
+/// `dispatch`/`quit`/`spawn` siguen siendo seguros de llamar pero los
+/// `Msg` que generan no van a ningún lado (no hay event loop detrás).
+pub struct Handle<Msg: Send + 'static> {
+    inner: HandleInner<Msg>,
+}
+
+enum HandleInner<Msg: Send + 'static> {
+    Real(EventLoopProxy<UserEvent<Msg>>),
+    /// Handle de tests: drop silencioso de todos los dispatches. Permite
+    /// llamar funciones que toman `&Handle<Msg>` sin levantar un event
+    /// loop real (que en CI sin display tiraría).
+    Test,
+}
+
+impl<Msg: Send + 'static> Clone for Handle<Msg> {
+    fn clone(&self) -> Self {
+        Self {
+            inner: match &self.inner {
+                HandleInner::Real(p) => HandleInner::Real(p.clone()),
+                HandleInner::Test => HandleInner::Test,
+            },
+        }
+    }
+}
+
+impl<Msg: Send + 'static> Handle<Msg> {
+    /// Construye un handle desactivado para tests — todos los dispatch
+    /// se descartan silenciosamente. Útil para probar funciones que toman
+    /// `&Handle<Msg>` sin levantar un event loop real (que en CI sin
+    /// display tiraría).
+    pub fn for_test() -> Self {
+        Self {
+            inner: HandleInner::Test,
+        }
+    }
+
+    /// Cierra la ventana y termina el bucle. La transición en curso (si la
+    /// hay) se completa antes de salir.
+    pub fn quit(&self) {
+        match &self.inner {
+            HandleInner::Real(p) => {
+                let _ = p.send_event(UserEvent::Quit);
+            }
+            HandleInner::Test => {}
+        }
+    }
+
+    /// Abre una ventana OS **secundaria** (ver [`App::secondary_view`]). La
+    /// `key` la elige la app para reconocerla luego; abrir con una key que ya
+    /// existe sólo la enfoca (no duplica). El contenido lo pinta
+    /// `App::secondary_view(model, key)` y los eventos (click/tecla/…) reentran
+    /// al mismo `update`, así que la ventana comparte el modelo con la primaria.
+    /// Cerrala con [`Self::close_window`] o con el botón del SO.
+    pub fn open_window(&self, key: u64, title: impl Into<String>, width: u32, height: u32) {
+        if let HandleInner::Real(p) = &self.inner {
+            let _ = p.send_event(UserEvent::OpenWindow {
+                key,
+                title: title.into(),
+                width,
+                height,
+            });
+        }
+    }
+
+    /// Cierra la ventana secundaria con esa `key` (no-op si no existe). La
+    /// ventana primaria nunca se cierra por acá — para eso está [`Self::quit`].
+    pub fn close_window(&self, key: u64) {
+        if let HandleInner::Real(p) = &self.inner {
+            let _ = p.send_event(UserEvent::CloseWindow { key });
+        }
+    }
+
+    /// Encola un Msg para procesarse en el próximo turno del bucle. Útil
+    /// para que un callback externo reentre al update.
+    pub fn dispatch(&self, msg: Msg) {
+        match &self.inner {
+            HandleInner::Real(p) => {
+                let _ = p.send_event(UserEvent::Msg(msg));
+            }
+            HandleInner::Test => {}
+        }
+    }
+
+    /// Lanza una closure en un hilo aparte; cuando devuelve `Msg`, el
+    /// runtime la entrega al `update` en el hilo de UI. Pensado para
+    /// trabajo bloqueante (PAM tarda ~2 s ante un fallo, p. ej.).
+    pub fn spawn<F>(&self, f: F)
+    where
+        F: FnOnce() -> Msg + Send + 'static,
+    {
+        match &self.inner {
+            HandleInner::Real(p) => {
+                let proxy = p.clone();
+                std::thread::spawn(move || {
+                    let msg = f();
+                    let _ = proxy.send_event(UserEvent::Msg(msg));
+                });
+            }
+            HandleInner::Test => {
+                // Corremos la closure igual (para no perder side-effects de
+                // tests que dependan de su side) pero el msg se descarta.
+                std::thread::spawn(move || {
+                    let _ = f();
+                });
+            }
+        }
+    }
+
+    /// Lanza un loop periódico en un hilo aparte: cada `period` invoca
+    /// `f()` y dispatcha el `Msg` resultante al `update`. El thread
+    /// queda corriendo hasta que el event loop se cierra (en ese
+    /// punto el `send_event` falla silenciosamente y el thread spinea
+    /// hasta el exit del proceso, costo despreciable).
+    ///
+    /// Útil para ticks de simulación (~11 Hz en dominium), polling de
+    /// hardware, o cualquier feed que necesite Msgs a intervalos
+    /// regulares. Si `f` necesita state, capturalo en la closure por
+    /// move; la closure se ejecuta en un thread aparte así que el
+    /// state capturado debe ser `Send`.
+    pub fn spawn_periodic<F>(&self, period: std::time::Duration, f: F)
+    where
+        F: Fn() -> Msg + Send + 'static,
+    {
+        match &self.inner {
+            HandleInner::Real(p) => {
+                let proxy = p.clone();
+                std::thread::spawn(move || loop {
+                    std::thread::sleep(period);
+                    if proxy.send_event(UserEvent::Msg(f())).is_err() {
+                        // Event loop cerrado — el thread puede morir.
+                        break;
+                    }
+                });
+            }
+            HandleInner::Test => {
+                // Un thread vivo eternamente sin sumidero ni manera de
+                // pararlo sería un leak — en for_test simplemente no
+                // arrancamos el loop. Los tests que necesiten verificar
+                // periodic behaviour deben usar el callback directo.
+                let _ = f;
+            }
+        }
+    }
+}
+
+/// Evento de teclado normalizado.
+#[derive(Debug, Clone)]
+pub struct KeyEvent {
+    pub key: Key,
+    pub state: KeyState,
+    /// Texto resultante (con modifiers e IME aplicados). Útil para inserción
+    /// directa; `None` para teclas que no producen texto (flechas, etc.).
+    pub text: Option<String>,
+    pub modifiers: Modifiers,
+    pub repeat: bool,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum KeyState {
+    Pressed,
+    Released,
+}
+
+/// Evento de IME normalizado (espeja `winit::event::Ime`). Ver
+/// [`App::on_ime`] para el flujo Enabled → Preedit* → Commit/Disabled.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum ImeEvent {
+    /// El IME se activó para esta ventana.
+    Enabled,
+    /// Texto en composición (aún no confirmado). `cursor` es el rango
+    /// `(inicio, fin)` en bytes a resaltar dentro de `text`, si el IME lo
+    /// reporta. Cada `Preedit` reemplaza al anterior; uno con `text`
+    /// vacío cierra la preedición sin confirmar.
+    Preedit {
+        text: String,
+        cursor: Option<(usize, usize)>,
+    },
+    /// Texto confirmado: insertarlo como si se hubiera tecleado.
+    Commit(String),
+    /// El IME se desactivó (perder foco, cambiar de método).
+    Disabled,
+}
+
+#[derive(Debug, Clone, Copy, Default, PartialEq, Eq)]
+pub struct Modifiers {
+    pub shift: bool,
+    pub ctrl: bool,
+    pub alt: bool,
+    pub meta: bool,
+}
+
+/// Delta de rueda en "líneas" lógicas (normalizado a través de backends).
+/// Convención CSS: positivo = scroll **hacia abajo** (contenido sube).
+/// `x` similar para scroll horizontal (touchpads, ratones de 2 ejes).
+#[derive(Debug, Clone, Copy, Default)]
+pub struct WheelDelta {
+    pub x: f32,
+    pub y: f32,
+}
+
+impl From<ModifiersState> for Modifiers {
+    fn from(m: ModifiersState) -> Self {
+        Self {
+            shift: m.shift_key(),
+            ctrl: m.control_key(),
+            alt: m.alt_key(),
+            meta: m.super_key(),
+        }
+    }
+}
+
+// --- Runtime winit. El event loop (impl ApplicationHandler) vive en
+// `eventloop` y accede los campos privados de estos structs vía
+// `use super::*`. La composición declarativa (View, mount, paint,
+// hit-test) la trae el re-export de `llimphi_compositor`. ---
+mod eventloop;
+
+struct Runtime<A: App> {
+    handle: Handle<A::Msg>,
+    state: Option<RuntimeState<A>>,
+    /// Ventanas OS secundarias abiertas (opt-in vía [`Handle::open_window`]).
+    /// Comparten el `Hal`/`Renderer` y el modelo de la primaria (`state`);
+    /// cada una lleva su propia surface + caches de interacción. Vacío en la
+    /// inmensa mayoría de las apps (monoventana) — coste cero.
+    secondaries: Vec<SecondaryState<A>>,
+}
+
+/// Estado por **ventana secundaria**. Espeja los campos de interacción de
+/// [`RuntimeState`] pero SIN modelo (vive en la primaria), sin overlay y sin
+/// `Hal`/`Renderer` propios (los toma prestados de la primaria al pintar).
+struct SecondaryState<A: App> {
+    /// La key con la que la app la abrió (la pasa a `secondary_view`).
+    key: u64,
+    window: Arc<Window>,
+    surface: WinitSurface,
+    scene: vello::Scene,
+    typesetter: llimphi_text::Typesetter,
+    layout: LayoutTree,
+    cursor: PhysicalPosition<f64>,
+    modifiers: Modifiers,
+    last_render: Option<SecRenderCache<A::Msg>>,
+    hovered: Option<usize>,
+    drag: Option<DragState<A::Msg>>,
+    last_title: Option<String>,
+}
+
+/// Cache de render de una ventana secundaria (como [`RenderCache`] pero sin
+/// capa de overlay). Sólo guarda el árbol montado + layout para hit-testear el
+/// próximo click/hover; el `hover_idx` actual vive en `SecondaryState::hovered`.
+struct SecRenderCache<Msg> {
+    mounted: Mounted<Msg>,
+    computed: ComputedLayout,
+}
+
+struct RuntimeState<A: App> {
+    window: Arc<Window>,
+    hal: Hal,
+    surface: WinitSurface,
+    renderer: Renderer,
+    scene: vello::Scene,
+    /// Compositor de la capa de overlay sobre contenido `gpu_paint` (video).
+    /// Sólo entra en juego cuando el árbol principal tiene painters gpu y hay
+    /// un overlay activo; resuelve el z-order (menús por encima del video).
+    overlay_compositor: llimphi_hal::OverlayCompositor,
+    model: Option<A::Model>,
+    cursor: PhysicalPosition<f64>,
+    modifiers: Modifiers,
+    typesetter: llimphi_text::Typesetter,
+    /// Árboles de layout reusados entre frames: `clear()` + `mount` en
+    /// vez de re-allocar el slotmap de taffy en cada redraw. Uno para el
+    /// árbol principal, otro para el overlay (sus `NodeId` no deben
+    /// colisionar dentro del mismo frame).
+    layout: LayoutTree,
+    overlay_layout: LayoutTree,
+    /// Último frame renderizado: árbol montado + rects absolutos +
+    /// nodo con hover. Lo consume el handler de click para hit-testear
+    /// sin reconstruir `view` + layout, y CursorMoved para detectar si
+    /// el hover cambió y disparar redraw.
+    last_render: Option<RenderCache<A::Msg>>,
+    /// Nodo hovereado **persistente** entre frames, actualizado SÓLO en
+    /// `CursorMoved`. Es contra esto que se detecta el `on_pointer_enter`
+    /// (no contra `last_render.hover_idx`, que el render recomputa cada
+    /// cuadro): en una app que re-renderiza sin parar (visores `paint_with`)
+    /// el render "se comería" la transición de hover antes de que el handler
+    /// del mouse la detecte, y el hover-switch de menús no funcionaría.
+    hovered: Option<usize>,
+    /// Drag activo. Mantiene su propio handler clonado del MountedNode
+    /// — así el drag sobrevive aunque el cache se invalide entre
+    /// eventos.
+    drag: Option<DragState<A::Msg>>,
+    /// Foco actual (id de un nodo `View::focusable`). El runtime es la
+    /// única fuente de verdad: lo mueve con Tab/Shift+Tab y click-to-focus
+    /// y lo notifica vía `App::on_focus`. `None` = nada enfocado.
+    focused: Option<u64>,
+    /// Último título dinámico aplicado a la ventana (ver [`App::window_title`]).
+    /// Evita llamar `set_title` en cada frame cuando no cambió.
+    last_title: Option<String>,
+}
+
+struct RenderCache<Msg> {
+    mounted: Mounted<Msg>,
+    computed: ComputedLayout,
+    /// Índice del nodo en hover en el frame ya pintado. `None` si el
+    /// cursor no toca ningún `hover_fill`.
+    hover_idx: Option<usize>,
+    /// Índice del drop target hovereado en el frame ya pintado. Solo
+    /// se setea durante un drag activo con `payload` declarado.
+    drop_hover_idx: Option<usize>,
+    /// Capa de overlay (menú contextual, modal). Cuando está presente,
+    /// hover/click/right-click se rutean a ella exclusivamente — el
+    /// árbol principal queda "bajo vidrio" hasta que la app cierre el
+    /// overlay devolviendo `None` desde [`App::view_overlay`].
+    overlay: Option<OverlayCache<Msg>>,
+}
+
+struct OverlayCache<Msg> {
+    mounted: Mounted<Msg>,
+    computed: ComputedLayout,
+    hover_idx: Option<usize>,
+}
+
+/// Dos sabores de handler de drag activo: el simple `(phase, dx, dy)`
+/// o la variante que conserva la posición local del press original
+/// `(phase, dx, dy, lx0, ly0)`. El runtime elige uno al iniciar el drag.
+enum DragHandlerKind<Msg> {
+    Delta(DragFn<Msg>),
+    DeltaAt(DragAtFn<Msg>, f32, f32),
+}
+
+struct DragState<Msg> {
+    handler: DragHandlerKind<Msg>,
+    /// Cursor en el último evento (Press o CursorMoved). El delta del
+    /// próximo Move se calcula contra este, no contra el inicio del
+    /// drag — el caller acumula los deltas en su modelo si los necesita.
+    last_cursor: PhysicalPosition<f64>,
+    /// Payload `u64` que viaja con el drag. `None` si el draggable
+    /// origen no declaró ninguno (drag de resize/scroll/etc.). Los drop
+    /// targets sólo reaccionan cuando hay payload.
+    payload: Option<u64>,
+}
+
+/// Punto de entrada: corre el bucle Elm hasta que el usuario cierre la
+/// ventana (o la app llame [`Handle::quit`]).
+pub fn run<A: App>() {
+    let event_loop = EventLoop::<UserEvent<A::Msg>>::with_user_event()
+        .build()
+        .expect("event loop");
+    event_loop.set_control_flow(ControlFlow::Wait);
+    let handle = Handle {
+        inner: HandleInner::Real(event_loop.create_proxy()),
+    };
+    let mut runtime: Runtime<A> = Runtime {
+        handle,
+        state: None,
+        secondaries: Vec::new(),
+    };
+    event_loop.run_app(&mut runtime).expect("run app");
+}
diff --git a/llimphi-workspace/Cargo.toml b/llimphi-workspace/Cargo.toml
new file mode 100644
index 0000000..4477080
--- /dev/null
+++ b/llimphi-workspace/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-workspace"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-workspace — chasis genérico estilo tmux: hospeda N paneles en un árbol BSP (llimphi-widget-panes) con la máquina de estados (split/close/focus/resize) + chrome estándar. La capa sobre la que cualquier app de gioser se monta en un layout intercambiable."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-panes = { path = "../widgets/panes" }
diff --git a/llimphi-workspace/examples/workspace_demo.rs b/llimphi-workspace/examples/workspace_demo.rs
new file mode 100644
index 0000000..54ebcc4
--- /dev/null
+++ b/llimphi-workspace/examples/workspace_demo.rs
@@ -0,0 +1,212 @@
+//! Demo del chasis `llimphi-workspace`.
+//!
+//! Mismo resultado que `panes_demo` pero la app ya no reimplementa la
+//! máquina de estados: guarda un `Workspace` + un mapa de paneles, y deja
+//! que el chasis maneje split/cerrar/foco/resize y el chrome. Esto es el
+//! molde que después adopta cada app de gioser.
+//!
+//! Correr:  `cargo run -p llimphi-workspace --example workspace_demo --release`
+
+use std::collections::HashMap;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, FlexDirection, Size, Style},
+    Rect,
+};
+use llimphi_ui::{App, Handle, View};
+use llimphi_theme::Theme;
+use llimphi_workspace::{workspace_view, Axis, PaneId, Workspace, WorkspacePalette, WsEffect, WsMsg};
+
+struct Demo;
+
+#[derive(Clone)]
+enum Msg {
+    Ws(WsMsg),
+    Panel(PaneId, PanelMsg),
+}
+
+#[derive(Clone)]
+enum PanelMsg {
+    Inc,
+    Dec,
+    AddNote,
+}
+
+enum Kind {
+    Counter(i64),
+    Notes(Vec<String>),
+}
+
+struct Model {
+    ws: Workspace,
+    panes: HashMap<PaneId, Kind>,
+    theme: Theme,
+}
+
+impl App for Demo {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "workspace — chasis tmux de gioser"
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        let mut ws = Workspace::new(); // panel 0
+        let mut panes = HashMap::new();
+        panes.insert(0, Kind::Counter(0));
+        let id = ws.split(Axis::Horizontal);
+        panes.insert(id, Kind::Notes(vec!["arrastrá el divisor del medio →".into()]));
+        ws.focus(0);
+        Model {
+            ws,
+            panes,
+            theme: Theme::dark(),
+        }
+    }
+
+    fn update(mut model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
+        match msg {
+            Msg::Ws(m) => match model.ws.apply(m) {
+                WsEffect::Created(id) => {
+                    // Alternamos tipo para ilustrar paneles heterogéneos.
+                    let kind = if id % 2 == 0 {
+                        Kind::Counter(0)
+                    } else {
+                        Kind::Notes(vec![])
+                    };
+                    model.panes.insert(id, kind);
+                }
+                WsEffect::Closed(id) => {
+                    model.panes.remove(&id);
+                }
+                WsEffect::None => {}
+            },
+            Msg::Panel(id, pm) => {
+                if let Some(kind) = model.panes.get_mut(&id) {
+                    match (kind, pm) {
+                        (Kind::Counter(n), PanelMsg::Inc) => *n += 1,
+                        (Kind::Counter(n), PanelMsg::Dec) => *n -= 1,
+                        (Kind::Notes(v), PanelMsg::AddNote) => {
+                            let n = v.len() + 1;
+                            v.push(format!("nota #{n}"));
+                        }
+                        _ => {}
+                    }
+                }
+            }
+        }
+        model
+    }
+
+    fn view(model: &Model) -> View<Msg> {
+        let palette = WorkspacePalette::from_theme(&model.theme);
+        let panes = &model.panes;
+        let theme = &model.theme;
+        workspace_view(
+            &model.ws,
+            &palette,
+            move |id| render_pane(panes, theme, id),
+            Msg::Ws,
+        )
+    }
+}
+
+fn render_pane(panes: &HashMap<PaneId, Kind>, t: &Theme, id: PaneId) -> View<Msg> {
+    let Some(kind) = panes.get(&id) else {
+        return label("(vacío)".to_string(), 14.0, t.fg_muted);
+    };
+    let body = match kind {
+        Kind::Counter(n) => col(
+            8.0,
+            vec![
+                label(format!("{n}"), 44.0, t.accent),
+                row(
+                    8.0,
+                    vec![
+                        button("−", Msg::Panel(id, PanelMsg::Dec), t),
+                        button("+", Msg::Panel(id, PanelMsg::Inc), t),
+                    ],
+                ),
+            ],
+        ),
+        Kind::Notes(v) => {
+            let mut lines: Vec<View<Msg>> = v
+                .iter()
+                .map(|s| label(format!("• {s}"), 14.0, t.fg_text))
+                .collect();
+            lines.push(button("+ nota", Msg::Panel(id, PanelMsg::AddNote), t));
+            col(6.0, lines)
+        }
+    };
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        gap: Size {
+            width: length(10.0),
+            height: length(10.0),
+        },
+        padding: uniform(12.0),
+        flex_grow: 1.0,
+        ..Default::default()
+    })
+    .children(vec![label(format!("panel #{id}"), 13.0, t.fg_muted), body])
+}
+
+fn button(text: &str, msg: Msg, t: &Theme) -> View<Msg> {
+    View::new(Style {
+        padding: Rect {
+            left: length(12.0),
+            right: length(12.0),
+            top: length(6.0),
+            bottom: length(6.0),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(t.bg_button)
+    .hover_fill(t.bg_button_hover)
+    .radius(6.0)
+    .on_click(msg)
+    .children(vec![label(text.to_string(), 14.0, t.fg_text)])
+}
+
+fn col(gap: f32, children: Vec<View<Msg>>) -> View<Msg> {
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        gap: Size {
+            width: length(gap),
+            height: length(gap),
+        },
+        ..Default::default()
+    })
+    .children(children)
+}
+
+fn row(gap: f32, children: Vec<View<Msg>>) -> View<Msg> {
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        gap: Size {
+            width: length(gap),
+            height: length(gap),
+        },
+        ..Default::default()
+    })
+    .children(children)
+}
+
+fn label(text: String, size: f32, color: llimphi_ui::llimphi_raster::peniko::Color) -> View<Msg> {
+    View::new(Style::default()).text(text, size, color)
+}
+
+fn uniform(px: f32) -> Rect<llimphi_ui::llimphi_layout::taffy::prelude::LengthPercentage> {
+    Rect {
+        left: length(px),
+        right: length(px),
+        top: length(px),
+        bottom: length(px),
+    }
+}
+
+fn main() {
+    llimphi_ui::run::<Demo>();
+}
diff --git a/llimphi-workspace/src/lib.rs b/llimphi-workspace/src/lib.rs
new file mode 100644
index 0000000..11e73f7
--- /dev/null
+++ b/llimphi-workspace/src/lib.rs
@@ -0,0 +1,378 @@
+//! `llimphi-workspace` — chasis genérico estilo tmux.
+//!
+//! Paso 2 de la visión "montar cualquier componente de gioser en un layout
+//! intercambiable con splits resizables". Donde [`llimphi_widget_panes`]
+//! aporta el **árbol** (estructura + render + drag), este crate aporta la
+//! **máquina de estados** (qué panel está enfocado, cómo se parte/cierra,
+//! el contador de ids) + el **chrome estándar** (toolbar split/cerrar).
+//!
+//! ## Cómo lo usa una app
+//!
+//! La app guarda un [`Workspace`] en su `Model` y un `HashMap<PaneId, …>`
+//! con el estado de cada panel. Su `Msg` envuelve dos cosas:
+//!
+//! ```ignore
+//! enum Msg {
+//!     Ws(WsMsg),                 // mensajes del chasis (focus/split/…)
+//!     Panel(PaneId, PanelMsg),   // mensajes de un panel concreto
+//! }
+//! ```
+//!
+//! En `update`, los `Ws` se aplican con [`Workspace::apply`], que devuelve
+//! un [`WsEffect`] indicando si hay que **crear** el estado de un panel
+//! nuevo o **borrar** el de uno cerrado. En `view`, [`workspace_view`] arma
+//! el chrome + el árbol; la app sólo provee el contenido de cada hoja (ya
+//! lifteado a su propio `Msg` — el chasis no toca los `PanelMsg`).
+//!
+//! El lift se hace al construir la vista (igual que `shuma-module`), así
+//! sorteamos la falta de `View::map` sin `Box<dyn Any>`: el chasis es
+//! genérico sobre el `Msg` del host y nunca downcastea.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Dimension, FlexDirection, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::View;
+use llimphi_widget_panes::{panes_view, Layout, PanesPalette};
+
+pub use llimphi_widget_panes::{Axis, PaneId, Side};
+
+/// Estado del workspace: el árbol de paneles + cuál está enfocado + el
+/// contador para asignar ids nuevos. Agnóstico del contenido — el host
+/// guarda el estado real de cada panel por su `PaneId`.
+#[derive(Debug, Clone)]
+pub struct Workspace {
+    layout: Layout,
+    focused: PaneId,
+    next_id: PaneId,
+}
+
+impl Workspace {
+    /// Workspace con un único panel (id `0`).
+    pub fn new() -> Self {
+        Self {
+            layout: Layout::single(0),
+            focused: 0,
+            next_id: 1,
+        }
+    }
+
+    /// Id del panel enfocado.
+    pub fn focused(&self) -> PaneId {
+        self.focused
+    }
+
+    /// Cantidad de paneles.
+    pub fn count(&self) -> usize {
+        self.layout.count()
+    }
+
+    /// Ids de todos los paneles, en orden espacial.
+    pub fn leaves(&self) -> Vec<PaneId> {
+        self.layout.leaves()
+    }
+
+    /// El árbol crudo (para casos avanzados; lo normal es [`workspace_view`]).
+    pub fn layout(&self) -> &Layout {
+        &self.layout
+    }
+
+    /// Enfoca un panel (no-op si no existe).
+    pub fn focus(&mut self, id: PaneId) {
+        if self.layout.contains(id) {
+            self.focused = id;
+        }
+    }
+
+    /// Parte el panel enfocado en `axis`; el nuevo queda enfocado. Devuelve
+    /// el `PaneId` nuevo para que el host cree su estado.
+    pub fn split(&mut self, axis: Axis) -> PaneId {
+        let id = self.next_id;
+        self.next_id += 1;
+        self.layout.split(self.focused, id, axis);
+        self.focused = id;
+        id
+    }
+
+    /// Cierra el panel enfocado (no cierra el último). Devuelve el id
+    /// removido para que el host libere su estado, o `None` si no removió.
+    pub fn close(&mut self) -> Option<PaneId> {
+        if self.count() <= 1 {
+            return None;
+        }
+        let target = self.focused;
+        let (nl, removed) = self.layout.clone().without(target);
+        if removed {
+            self.layout = nl;
+            self.focused = self.layout.first_leaf();
+            Some(target)
+        } else {
+            None
+        }
+    }
+
+    /// Ajusta el ratio del split direccionado por `path`.
+    pub fn resize(&mut self, path: &[Side], delta: f32) {
+        self.layout.resize(path, delta);
+    }
+
+    /// Aplica un mensaje del chasis y reporta el efecto a atender.
+    pub fn apply(&mut self, msg: WsMsg) -> WsEffect {
+        match msg {
+            WsMsg::Focus(id) => {
+                self.focus(id);
+                WsEffect::None
+            }
+            WsMsg::Split(axis) => WsEffect::Created(self.split(axis)),
+            WsMsg::Close => match self.close() {
+                Some(id) => WsEffect::Closed(id),
+                None => WsEffect::None,
+            },
+            WsMsg::Resize(path, d) => {
+                self.resize(&path, d);
+                WsEffect::None
+            }
+        }
+    }
+}
+
+impl Default for Workspace {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+/// Mensajes del chasis. El host los envuelve en su propio `Msg` y los rutea
+/// a [`Workspace::apply`].
+#[derive(Debug, Clone, PartialEq)]
+pub enum WsMsg {
+    Focus(PaneId),
+    Split(Axis),
+    Close,
+    Resize(Vec<Side>, f32),
+}
+
+/// Resultado de [`Workspace::apply`] — qué tiene que hacer el host con su
+/// mapa de estados de panel.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum WsEffect {
+    /// Nada que hacer.
+    None,
+    /// Se creó un panel nuevo con este id: inicializá su estado.
+    Created(PaneId),
+    /// Se cerró este panel: borrá su estado.
+    Closed(PaneId),
+}
+
+/// Paleta del chasis.
+#[derive(Debug, Clone, Copy)]
+pub struct WorkspacePalette {
+    pub panes: PanesPalette,
+    pub bar_bg: Color,
+    pub btn_bg: Color,
+    pub btn_hover: Color,
+    pub label: Color,
+    pub muted: Color,
+}
+
+impl Default for WorkspacePalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl WorkspacePalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            panes: PanesPalette::from_theme(t),
+            bar_bg: t.bg_panel,
+            btn_bg: t.bg_button,
+            btn_hover: t.bg_button_hover,
+            label: t.fg_text,
+            muted: t.fg_muted,
+        }
+    }
+}
+
+/// Arma el chasis completo: toolbar (Split →/↓, Cerrar, estado) + el árbol
+/// de paneles.
+///
+/// - `leaf` materializa el contenido de cada panel — **ya lifteado al `Msg`
+///   del host** (el host hace el lift internamente con su `Panel(id, …)`).
+/// - `lift` mapea los [`WsMsg`] del chasis al `Msg` del host.
+pub fn workspace_view<Host>(
+    ws: &Workspace,
+    palette: &WorkspacePalette,
+    mut leaf: impl FnMut(PaneId) -> View<Host>,
+    lift: impl Fn(WsMsg) -> Host + Clone + Send + Sync + 'static,
+) -> View<Host>
+where
+    Host: Clone + Send + Sync + 'static,
+{
+    let toolbar = View::new(Style {
+        flex_direction: FlexDirection::Row,
+        gap: Size {
+            width: length(8.0),
+            height: length(8.0),
+        },
+        padding: uniform(8.0),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bar_bg)
+    .children(vec![
+        button("Split →", lift(WsMsg::Split(Axis::Horizontal)), palette),
+        button("Split ↓", lift(WsMsg::Split(Axis::Vertical)), palette),
+        button("Cerrar", lift(WsMsg::Close), palette),
+        View::new(Style {
+            flex_grow: 1.0,
+            ..Default::default()
+        }),
+        text(
+            format!("foco #{}  ·  {} paneles", ws.focused(), ws.count()),
+            13.0,
+            palette.muted,
+        ),
+    ]);
+
+    let lift_resize = lift.clone();
+    let lift_focus = lift.clone();
+    let area = panes_view(
+        ws.layout(),
+        ws.focused(),
+        |id| leaf(id),
+        move |path, phase, d| {
+            let _ = phase;
+            Some((lift_resize)(WsMsg::Resize(path, d)))
+        },
+        move |id| (lift_focus)(WsMsg::Focus(id)),
+        &palette.panes,
+    );
+
+    let area_wrap = View::new(Style {
+        flex_grow: 1.0,
+        size: full(),
+        min_size: zero(),
+        ..Default::default()
+    })
+    .children(vec![area]);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: full(),
+        ..Default::default()
+    })
+    .children(vec![toolbar, area_wrap])
+}
+
+fn button<Host>(label: &str, msg: Host, palette: &WorkspacePalette) -> View<Host>
+where
+    Host: Clone + Send + Sync + 'static,
+{
+    View::new(Style {
+        padding: Rect {
+            left: length(12.0),
+            right: length(12.0),
+            top: length(6.0),
+            bottom: length(6.0),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.btn_bg)
+    .hover_fill(palette.btn_hover)
+    .radius(6.0)
+    .on_click(msg)
+    .children(vec![text(label.to_string(), 14.0, palette.label)])
+}
+
+fn text<Host>(content: String, size: f32, color: Color) -> View<Host>
+where
+    Host: Clone + Send + Sync + 'static,
+{
+    View::new(Style::default()).text(content, size, color)
+}
+
+fn full() -> Size<Dimension> {
+    Size {
+        width: percent(1.0_f32),
+        height: percent(1.0_f32),
+    }
+}
+
+fn zero() -> Size<Dimension> {
+    Size {
+        width: length(0.0_f32),
+        height: length(0.0_f32),
+    }
+}
+
+fn uniform(px: f32) -> Rect<llimphi_ui::llimphi_layout::taffy::prelude::LengthPercentage> {
+    Rect {
+        left: length(px),
+        right: length(px),
+        top: length(px),
+        bottom: length(px),
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn starts_with_one_pane() {
+        let ws = Workspace::new();
+        assert_eq!(ws.count(), 1);
+        assert_eq!(ws.focused(), 0);
+    }
+
+    #[test]
+    fn split_creates_and_focuses_new() {
+        let mut ws = Workspace::new();
+        let id = ws.split(Axis::Horizontal);
+        assert_eq!(ws.count(), 2);
+        assert_eq!(ws.focused(), id);
+        assert_ne!(id, 0);
+    }
+
+    #[test]
+    fn apply_split_reports_created() {
+        let mut ws = Workspace::new();
+        match ws.apply(WsMsg::Split(Axis::Vertical)) {
+            WsEffect::Created(id) => assert_eq!(id, ws.focused()),
+            other => panic!("esperaba Created, fue {other:?}"),
+        }
+    }
+
+    #[test]
+    fn close_reports_closed_and_refocuses() {
+        let mut ws = Workspace::new();
+        let id = ws.split(Axis::Horizontal); // foco en el nuevo
+        match ws.apply(WsMsg::Close) {
+            WsEffect::Closed(closed) => {
+                assert_eq!(closed, id);
+                assert_eq!(ws.count(), 1);
+                assert_eq!(ws.focused(), 0);
+            }
+            other => panic!("esperaba Closed, fue {other:?}"),
+        }
+    }
+
+    #[test]
+    fn cannot_close_last_pane() {
+        let mut ws = Workspace::new();
+        assert_eq!(ws.apply(WsMsg::Close), WsEffect::None);
+        assert_eq!(ws.count(), 1);
+    }
+
+    #[test]
+    fn focus_ignores_unknown() {
+        let mut ws = Workspace::new();
+        ws.focus(999);
+        assert_eq!(ws.focused(), 0);
+    }
+}
diff --git a/modules/bookmarks/Cargo.toml b/modules/bookmarks/Cargo.toml
new file mode 100644
index 0000000..9a94244
--- /dev/null
+++ b/modules/bookmarks/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "llimphi-module-bookmarks"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-module-bookmarks - marcadores per-file persistentes en la sesion del editor. Modulo Llimphi: el host emite ToggleAt(path, line) al disparar Ctrl+Alt+B, JumpNext/JumpPrev para navegar (devuelve JumpTo accion), y OpenList para abrir un overlay tipo symbol-outline con fuzzy filter sobre los marks. No persiste a disco - el host puede serializar marks si quiere."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-text-input = { workspace = true }
+nucleo-matcher = { workspace = true }
+
+[dev-dependencies]
diff --git a/modules/bookmarks/LEEME.md b/modules/bookmarks/LEEME.md
new file mode 100644
index 0000000..bc86f96
--- /dev/null
+++ b/modules/bookmarks/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-module-bookmarks
+
+> Bookmarks por archivo de [llimphi](../../README.md).
+
+Marca posiciones en un archivo (línea + columna + nombre); navegación rápida (`F2`/`Shift+F2`). Persiste por workspace.
diff --git a/modules/bookmarks/README.md b/modules/bookmarks/README.md
new file mode 100644
index 0000000..011fd2e
--- /dev/null
+++ b/modules/bookmarks/README.md
@@ -0,0 +1,5 @@
+# llimphi-module-bookmarks
+
+> Per-file bookmarks of [llimphi](../../README.md).
+
+Marks positions in a file (line + column + name); quick navigation (`F2`/`Shift+F2`). Persists per workspace.
diff --git a/modules/bookmarks/src/lib.rs b/modules/bookmarks/src/lib.rs
new file mode 100644
index 0000000..d974177
--- /dev/null
+++ b/modules/bookmarks/src/lib.rs
@@ -0,0 +1,424 @@
+//! llimphi-module-bookmarks - marcadores per-file persistentes en sesion.
+//!
+//! El usuario marca lineas con Ctrl+Alt+B y luego salta con
+//! Ctrl+Alt+N / Ctrl+Alt+P. Ctrl+Shift+B abre un overlay con la
+//! lista filtrable.
+//!
+//! Los marks son tuplas (PathBuf, line). Viven en memoria del
+//! proceso; el host puede serializar marks si quiere persistir.
+//!
+//! Sigue el contrato Llimphi de docs/MODULES.md.
+
+#![forbid(unsafe_code)]
+
+use std::path::{Path, PathBuf};
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{Key, KeyEvent, KeyState, NamedKey, View};
+use llimphi_widget_text_input::{text_input_view, TextInputPalette, TextInputState};
+
+/// Capabilities que aporta este modulo al host.
+pub const CAPABILITIES: &[&str] = &["editor.bookmarks"];
+
+pub const MAX_RESULTS: usize = 500;
+
+const PANEL_H: f32 = 320.0;
+const ROW_H: f32 = 20.0;
+const MAX_VISIBLE: usize = 12;
+
+/// Sub-state del overlay tipo lista (input + results + selected).
+/// None cuando no hay panel abierto.
+pub struct BookmarksOverlay {
+    pub input: TextInputState,
+    /// Indices a state.marks rankeados por fuzzy match. Cap MAX_RESULTS.
+    pub results: Vec<usize>,
+    pub selected: usize,
+}
+
+impl BookmarksOverlay {
+    pub fn new() -> Self {
+        Self { input: TextInputState::new(), results: Vec::new(), selected: 0 }
+    }
+}
+
+/// Estado interno. Persiste durante toda la sesion (no es Option en
+/// el host como otros modulos): los marks viven siempre, el overlay si
+/// es opcional. Hace de mini-registro de waypoints del usuario.
+pub struct BookmarksState {
+    /// Marks en orden de creacion. Cada uno es (path, line).
+    /// Toggle quita uno existente o agrega uno nuevo al final.
+    pub marks: Vec<(PathBuf, usize)>,
+    /// Overlay-list abierto cuando Some.
+    pub overlay: Option<BookmarksOverlay>,
+}
+
+impl Default for BookmarksState {
+    fn default() -> Self { Self::new() }
+}
+
+impl BookmarksState {
+    pub fn new() -> Self {
+        Self { marks: Vec::new(), overlay: None }
+    }
+
+    /// True si existe un mark con la misma (path, line).
+    pub fn contains(&self, path: &Path, line: usize) -> bool {
+        self.marks.iter().any(|(p, l)| p == path && *l == line)
+    }
+
+    /// Toggle: si ya existe lo remueve; si no, lo agrega al final.
+    /// Devuelve true si quedo agregado.
+    pub fn toggle(&mut self, path: PathBuf, line: usize) -> bool {
+        if let Some(idx) = self.marks.iter().position(|(p, l)| p == &path && *l == line) {
+            self.marks.remove(idx);
+            false
+        } else {
+            self.marks.push((path, line));
+            true
+        }
+    }
+}
+
+/// Vocabulario interno. El host lo wrapea en su Msg.
+#[derive(Debug, Clone)]
+pub enum BookmarksMsg {
+    /// Toggle del mark en (path, line). El host emite esto cuando
+    /// detecta el shortcut (Ctrl+Alt+B) y conoce la posicion del caret.
+    ToggleAt { path: PathBuf, line: usize },
+    /// Saltar al proximo mark cronologicamente despues de
+    /// (current_path, current_line). Si no hay marks, no-op.
+    JumpNext { current_path: PathBuf, current_line: usize },
+    /// Saltar al previo. Misma semantica reversa.
+    JumpPrev { current_path: PathBuf, current_line: usize },
+    /// Abrir el overlay-list.
+    OpenList,
+    /// Cerrar el overlay.
+    CloseList,
+    /// Teclas para el input del overlay.
+    ListKey(KeyEvent),
+    /// Navegacion en la lista del overlay.
+    ListNav(i32),
+    /// Enter: salta al mark seleccionado.
+    ListApply,
+    /// Limpia todos los marks.
+    ClearAll,
+}
+
+/// Efecto solicitado al host.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum BookmarksAction {
+    None,
+    /// El host deberia cerrar el overlay (limpiar la sub-state).
+    Close,
+    /// El host deberia abrir ese path (si no esta abierto) y
+    /// posicionar el caret. Cierra el overlay automaticamente cuando
+    /// llega vinculado a ListApply.
+    JumpTo { path: PathBuf, line: usize },
+    /// Mensaje informativo para la status bar (eg toggle feedback).
+    SetStatus(String),
+}
+
+/// Aplica un mensaje al estado.
+pub fn apply(state: &mut BookmarksState, msg: BookmarksMsg) -> BookmarksAction {
+    match msg {
+        BookmarksMsg::ToggleAt { path, line } => {
+            let added = state.toggle(path.clone(), line);
+            let name = path.file_name().and_then(|s| s.to_str()).unwrap_or("?");
+            let msg = if added {
+                format!("bookmark agregado en {} linea {}", name, line + 1)
+            } else {
+                format!("bookmark removido de {} linea {}", name, line + 1)
+            };
+            BookmarksAction::SetStatus(msg)
+        }
+        BookmarksMsg::JumpNext { current_path, current_line } => {
+            match next_after(state, &current_path, current_line) {
+                Some((p, l)) => BookmarksAction::JumpTo { path: p, line: l },
+                None => BookmarksAction::SetStatus("sin bookmarks".into()),
+            }
+        }
+        BookmarksMsg::JumpPrev { current_path, current_line } => {
+            match prev_before(state, &current_path, current_line) {
+                Some((p, l)) => BookmarksAction::JumpTo { path: p, line: l },
+                None => BookmarksAction::SetStatus("sin bookmarks".into()),
+            }
+        }
+        BookmarksMsg::OpenList => BookmarksAction::None,
+        BookmarksMsg::CloseList => BookmarksAction::Close,
+        BookmarksMsg::ListKey(ev) => {
+            if let Some(ov) = state.overlay.as_mut() {
+                ov.input.apply_key(&ev);
+                refilter_overlay(state);
+            }
+            BookmarksAction::None
+        }
+        BookmarksMsg::ListNav(d) => {
+            if let Some(ov) = state.overlay.as_mut() {
+                let n = ov.results.len() as i32;
+                if n > 0 {
+                    ov.selected = (ov.selected as i32 + d).rem_euclid(n) as usize;
+                }
+            }
+            BookmarksAction::None
+        }
+        BookmarksMsg::ListApply => {
+            let Some(ov) = state.overlay.as_ref() else { return BookmarksAction::None };
+            let Some(&idx) = ov.results.get(ov.selected) else { return BookmarksAction::None };
+            let Some((p, l)) = state.marks.get(idx).cloned() else { return BookmarksAction::None };
+            BookmarksAction::JumpTo { path: p, line: l }
+        }
+        BookmarksMsg::ClearAll => {
+            let n = state.marks.len();
+            state.marks.clear();
+            if let Some(ov) = state.overlay.as_mut() {
+                ov.results.clear();
+                ov.selected = 0;
+            }
+            BookmarksAction::SetStatus(format!("bookmarks limpios ({} removidos)", n))
+        }
+    }
+}
+
+/// Devuelve el mark inmediatamente posterior a (path, line) en orden
+/// de marks. Wraparound al final.
+fn next_after(state: &BookmarksState, path: &Path, line: usize) -> Option<(PathBuf, usize)> {
+    if state.marks.is_empty() { return None; }
+    let n = state.marks.len();
+    let cur_idx = state.marks.iter().position(|(p, l)| p == path && *l == line);
+    let start = match cur_idx {
+        Some(i) => (i + 1) % n,
+        None => 0,
+    };
+    Some(state.marks[start].clone())
+}
+
+/// Devuelve el mark inmediatamente previo. Wraparound al inicio.
+fn prev_before(state: &BookmarksState, path: &Path, line: usize) -> Option<(PathBuf, usize)> {
+    if state.marks.is_empty() { return None; }
+    let n = state.marks.len();
+    let cur_idx = state.marks.iter().position(|(p, l)| p == path && *l == line);
+    let start = match cur_idx {
+        Some(i) if i > 0 => i - 1,
+        Some(_) => n - 1,
+        None => n - 1,
+    };
+    Some(state.marks[start].clone())
+}
+
+/// Routing de teclas cuando el overlay esta abierto.
+pub fn on_key(state: &BookmarksState, event: &KeyEvent) -> Option<BookmarksMsg> {
+    state.overlay.as_ref()?;
+    if event.state != KeyState::Pressed { return None; }
+    Some(match &event.key {
+        Key::Named(NamedKey::Escape) => BookmarksMsg::CloseList,
+        Key::Named(NamedKey::Enter) => BookmarksMsg::ListApply,
+        Key::Named(NamedKey::ArrowDown) => BookmarksMsg::ListNav(1),
+        Key::Named(NamedKey::ArrowUp) => BookmarksMsg::ListNav(-1),
+        _ => BookmarksMsg::ListKey(event.clone()),
+    })
+}
+
+/// Atajo de toggle: Ctrl+Alt+B.
+pub fn toggle_shortcut(event: &KeyEvent) -> bool {
+    event.state == KeyState::Pressed
+        && event.modifiers.ctrl
+        && event.modifiers.alt
+        && !event.modifiers.shift
+        && matches!(&event.key, Key::Character(s) if s.eq_ignore_ascii_case("b"))
+}
+
+/// Atajo de open-list: Ctrl+Shift+B. Tambien sirve como toggle del
+/// panel (cierra si ya estaba abierto). El host decide en base a su
+/// state.
+pub fn open_shortcut(event: &KeyEvent) -> bool {
+    event.state == KeyState::Pressed
+        && event.modifiers.ctrl
+        && event.modifiers.shift
+        && matches!(&event.key, Key::Character(s) if s.eq_ignore_ascii_case("b"))
+}
+
+/// Atajo de next: Ctrl+Alt+N.
+pub fn next_shortcut(event: &KeyEvent) -> bool {
+    event.state == KeyState::Pressed
+        && event.modifiers.ctrl
+        && event.modifiers.alt
+        && matches!(&event.key, Key::Character(s) if s.eq_ignore_ascii_case("n"))
+}
+
+/// Atajo de prev: Ctrl+Alt+P.
+pub fn prev_shortcut(event: &KeyEvent) -> bool {
+    event.state == KeyState::Pressed
+        && event.modifiers.ctrl
+        && event.modifiers.alt
+        && matches!(&event.key, Key::Character(s) if s.eq_ignore_ascii_case("p"))
+}
+
+/// Recalcula overlay.results con fuzzy match contra path+line.
+/// Query vacio = todos los marks en orden.
+pub fn refilter_overlay(state: &mut BookmarksState) {
+    let Some(ov) = state.overlay.as_mut() else { return; };
+    let q = ov.input.text();
+    if q.trim().is_empty() {
+        ov.results = (0..state.marks.len().min(MAX_RESULTS)).collect();
+        ov.selected = 0;
+        return;
+    }
+    use nucleo_matcher::{pattern::{CaseMatching, Normalization, Pattern}, Config, Matcher, Utf32Str};
+    let mut matcher = Matcher::new(Config::DEFAULT);
+    let pat = Pattern::parse(&q, CaseMatching::Smart, Normalization::Smart);
+    let mut scored: Vec<(u32, usize)> = Vec::new();
+    let mut buf = Vec::new();
+    for (i, (p, l)) in state.marks.iter().enumerate() {
+        let hay_str = format!("{} {}", p.display(), l + 1);
+        buf.clear();
+        let hay = Utf32Str::new(&hay_str, &mut buf);
+        if let Some(score) = pat.score(hay, &mut matcher) {
+            scored.push((score, i));
+        }
+    }
+    scored.sort_by(|a, b| b.0.cmp(&a.0).then(a.1.cmp(&b.1)));
+    scored.truncate(MAX_RESULTS);
+    ov.results = scored.into_iter().map(|(_, i)| i).collect();
+    ov.selected = 0;
+}
+
+/// Paleta visual.
+#[derive(Debug, Clone)]
+pub struct BookmarksPalette {
+    pub bg_panel: Color,
+    pub bg_header: Color,
+    pub bg_selected: Color,
+    pub fg_text: Color,
+    pub fg_muted: Color,
+    pub fg_accent: Color,
+    theme: llimphi_theme::Theme,
+}
+
+impl BookmarksPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_panel: t.bg_panel,
+            bg_header: t.bg_panel_alt,
+            bg_selected: t.bg_selected,
+            fg_text: t.fg_text,
+            fg_muted: t.fg_muted,
+            fg_accent: t.accent,
+            theme: t.clone(),
+        }
+    }
+}
+
+/// Render del overlay. Solo se llama cuando state.overlay es Some.
+/// El host pasa root para mostrar paths relativos en la lista.
+pub fn view<HostMsg, F>(
+    state: &BookmarksState,
+    root: &Path,
+    palette: &BookmarksPalette,
+    to_host: F,
+) -> View<HostMsg>
+where
+    HostMsg: Clone + 'static,
+    F: Fn(BookmarksMsg) -> HostMsg + Copy + 'static,
+{
+    let ov = match state.overlay.as_ref() {
+        Some(o) => o,
+        None => return View::new(Style::default()),
+    };
+    let header = if state.marks.is_empty() {
+        "bookmarks - sin marks - Ctrl+Alt+B agrega - Esc cierra".to_string()
+    } else if ov.results.is_empty() {
+        format!("bookmarks - sin matches - {} marks - Esc cierra", state.marks.len())
+    } else {
+        format!(
+            "bookmarks - {} / {} - flechas navegan - Enter salta - Esc cierra",
+            ov.selected + 1,
+            ov.results.len(),
+        )
+    };
+    let header_view = View::new(Style {
+        size: Size { width: percent(1.0_f32), height: length(18.0_f32) },
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_header)
+    .text_aligned(header, 10.0, palette.fg_muted, Alignment::Start);
+
+    let tp = TextInputPalette::from_theme(&palette.theme);
+    let input_view = View::new(Style {
+        size: Size { width: percent(1.0_f32), height: length(26.0_f32) },
+        padding: Rect {
+            left: length(6.0_f32),
+            right: length(6.0_f32),
+            top: length(2.0_f32),
+            bottom: length(2.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .children(vec![text_input_view(
+        &ov.input,
+        "filtro: path o numero de linea",
+        true,
+        &tp,
+        to_host(BookmarksMsg::OpenList),
+    )]);
+
+    let visible_start = ov.selected.saturating_sub(MAX_VISIBLE.saturating_sub(1));
+    let visible_end = (visible_start + MAX_VISIBLE).min(ov.results.len());
+    let mut rows: Vec<View<HostMsg>> = Vec::with_capacity(MAX_VISIBLE);
+    for i in visible_start..visible_end {
+        let Some(&idx) = ov.results.get(i) else { continue };
+        let Some((p, line)) = state.marks.get(idx) else { continue };
+        let rel: String = match p.strip_prefix(root) {
+            Ok(r) => r.display().to_string(),
+            Err(_) => p.display().to_string(),
+        };
+        let label = format!("{}  :  linea {}", rel, line + 1);
+        let selected = i == ov.selected;
+        let bg = if selected { palette.bg_selected } else { palette.bg_panel };
+        let fg = if selected { palette.fg_text } else { palette.fg_muted };
+        rows.push(
+            View::new(Style {
+                size: Size { width: percent(1.0_f32), height: length(ROW_H) },
+                padding: Rect {
+                    left: length(10.0_f32),
+                    right: length(8.0_f32),
+                    top: length(0.0_f32),
+                    bottom: length(0.0_f32),
+                },
+                align_items: Some(AlignItems::Center),
+                flex_shrink: 0.0,
+                ..Default::default()
+            })
+            .fill(bg)
+            .text_aligned(label, 11.0, fg, Alignment::Start),
+        );
+    }
+
+    let mut children: Vec<View<HostMsg>> = Vec::with_capacity(2 + rows.len());
+    children.push(header_view);
+    children.push(input_view);
+    children.extend(rows);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size { width: percent(1.0_f32), height: length(PANEL_H) },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .children(children)
+}
diff --git a/modules/bookmarks/tests/smoke.rs b/modules/bookmarks/tests/smoke.rs
new file mode 100644
index 0000000..65d6f68
--- /dev/null
+++ b/modules/bookmarks/tests/smoke.rs
@@ -0,0 +1,94 @@
+//! Smoke tests del modulo bookmarks: toggle, jump-next/prev,
+//! shortcuts, fuzzy refilter del overlay.
+
+use std::path::PathBuf;
+
+use llimphi_module_bookmarks::{
+    self as bm, BookmarksAction, BookmarksMsg, BookmarksOverlay, BookmarksState,
+};
+use llimphi_ui::{Key, KeyEvent, KeyState, Modifiers};
+
+fn key_with(ctrl: bool, alt: bool, shift: bool, ch: &str) -> KeyEvent {
+    KeyEvent {
+        key: Key::Character(ch.into()),
+        state: KeyState::Pressed,
+        text: Some(ch.into()),
+        modifiers: Modifiers { ctrl, alt, shift, ..Modifiers::default() },
+        repeat: false,
+    }
+}
+
+#[test]
+fn toggle_agrega_y_remueve() {
+    let mut s = BookmarksState::new();
+    let p = PathBuf::from("/x/foo.rs");
+    let a1 = bm::apply(&mut s, BookmarksMsg::ToggleAt { path: p.clone(), line: 5 });
+    assert!(matches!(a1, BookmarksAction::SetStatus(_)));
+    assert!(s.contains(&p, 5));
+    let a2 = bm::apply(&mut s, BookmarksMsg::ToggleAt { path: p.clone(), line: 5 });
+    assert!(matches!(a2, BookmarksAction::SetStatus(_)));
+    assert!(!s.contains(&p, 5));
+}
+
+#[test]
+fn jump_next_wraparound() {
+    let mut s = BookmarksState::new();
+    let a = PathBuf::from("/x/a.rs");
+    let b = PathBuf::from("/x/b.rs");
+    s.toggle(a.clone(), 10);
+    s.toggle(b.clone(), 20);
+    s.toggle(a.clone(), 30);
+    // Estamos en (a, 10) - next debe ser (b, 20).
+    let action = bm::apply(&mut s, BookmarksMsg::JumpNext { current_path: a.clone(), current_line: 10 });
+    assert_eq!(action, BookmarksAction::JumpTo { path: b.clone(), line: 20 });
+    // Estamos en (a, 30) - next wrappea a (a, 10).
+    let action = bm::apply(&mut s, BookmarksMsg::JumpNext { current_path: a.clone(), current_line: 30 });
+    assert_eq!(action, BookmarksAction::JumpTo { path: a.clone(), line: 10 });
+}
+
+#[test]
+fn jump_prev_wraparound() {
+    let mut s = BookmarksState::new();
+    let a = PathBuf::from("/x/a.rs");
+    s.toggle(a.clone(), 10);
+    s.toggle(a.clone(), 20);
+    s.toggle(a.clone(), 30);
+    // Estamos en (a, 10) - prev wrappea a (a, 30).
+    let action = bm::apply(&mut s, BookmarksMsg::JumpPrev { current_path: a.clone(), current_line: 10 });
+    assert_eq!(action, BookmarksAction::JumpTo { path: a.clone(), line: 30 });
+}
+
+#[test]
+fn jump_sin_marks_es_setstatus() {
+    let mut s = BookmarksState::new();
+    let action = bm::apply(&mut s, BookmarksMsg::JumpNext { current_path: PathBuf::from("/x"), current_line: 0 });
+    assert!(matches!(action, BookmarksAction::SetStatus(_)));
+}
+
+#[test]
+fn shortcuts_distinguibles() {
+    assert!(bm::toggle_shortcut(&key_with(true, true, false, "b")));
+    assert!(!bm::toggle_shortcut(&key_with(true, true, true, "b"))); // ctrl+alt+shift+b no
+    assert!(bm::open_shortcut(&key_with(true, false, true, "b")));
+    assert!(bm::next_shortcut(&key_with(true, true, false, "n")));
+    assert!(bm::prev_shortcut(&key_with(true, true, false, "p")));
+}
+
+#[test]
+fn refilter_con_query_vacio_lista_todos() {
+    let mut s = BookmarksState::new();
+    s.toggle(PathBuf::from("/x/a.rs"), 1);
+    s.toggle(PathBuf::from("/x/b.rs"), 2);
+    s.overlay = Some(BookmarksOverlay::new());
+    bm::refilter_overlay(&mut s);
+    assert_eq!(s.overlay.as_ref().unwrap().results.len(), 2);
+}
+
+#[test]
+fn clear_all_vacia_marks() {
+    let mut s = BookmarksState::new();
+    s.toggle(PathBuf::from("/x"), 1);
+    s.toggle(PathBuf::from("/y"), 2);
+    let _ = bm::apply(&mut s, BookmarksMsg::ClearAll);
+    assert!(s.marks.is_empty());
+}
diff --git a/modules/command-palette/Cargo.toml b/modules/command-palette/Cargo.toml
new file mode 100644
index 0000000..0934b8f
--- /dev/null
+++ b/modules/command-palette/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "llimphi-module-command-palette"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-module-command-palette — paleta de comandos estilo Ctrl+Shift+P de VS Code. Módulo Llimphi reutilizable: state + Msg + Action + apply/on_key/view sobre un slice de Commands que provee el host. Fuzzy match con nucleo-matcher."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-text-input = { workspace = true }
+nucleo-matcher = { workspace = true }
diff --git a/modules/command-palette/LEEME.md b/modules/command-palette/LEEME.md
new file mode 100644
index 0000000..dbce288
--- /dev/null
+++ b/modules/command-palette/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-module-command-palette
+
+> Paleta de comandos de [llimphi](../../README.md).
+
+`Ctrl+Shift+P` abre un fuzzy-finder de comandos registrados (`Command { id, label, shortcut, action }`). Cada app declara sus comandos al iniciar.
diff --git a/modules/command-palette/README.md b/modules/command-palette/README.md
new file mode 100644
index 0000000..1f8fc3e
--- /dev/null
+++ b/modules/command-palette/README.md
@@ -0,0 +1,5 @@
+# llimphi-module-command-palette
+
+> Command palette of [llimphi](../../README.md).
+
+`Ctrl+Shift+P` opens a fuzzy-finder of registered commands (`Command { id, label, shortcut, action }`). Each app declares its commands on init.
diff --git a/modules/command-palette/src/lib.rs b/modules/command-palette/src/lib.rs
new file mode 100644
index 0000000..7259684
--- /dev/null
+++ b/modules/command-palette/src/lib.rs
@@ -0,0 +1,352 @@
+//! `llimphi-module-command-palette` — paleta de comandos reutilizable.
+//!
+//! Equivalente a Ctrl+Shift+P de VS Code: el host declara una lista
+//! plana de [`Command`]s (id opaco + título visible + grupo + hint del
+//! atajo) y el módulo presenta un overlay con input + resultados
+//! rankeados por fuzzy match. Cuando el user pica uno, el módulo emite
+//! [`PaletteAction::Invoke`] con el `id` — el host hace match y
+//! dispatcha lo que corresponda en su propio Msg.
+//!
+//! El módulo no sabe **qué** hacen los comandos. Eso es deliberado:
+//! mantiene al palette agnóstico de la app, y permite que aplicaciones
+//! muy distintas (un editor, un explorador de grafos, un viewer de
+//! imágenes) lo enchufen con sus respectivas listas sin acoplarse.
+//!
+//! Sigue el contrato Llimphi de `docs/MODULES.md`:
+//! `State + Msg + Action + apply/on_key/open_shortcut/view + Palette`.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{Key, KeyEvent, KeyState, NamedKey, View};
+use llimphi_widget_text_input::{text_input_view, TextInputPalette, TextInputState};
+
+/// Capabilities que aporta este módulo al host.
+pub const CAPABILITIES: &[&str] = &["editor.command-palette"];
+
+/// Tope de resultados rankeados visibles.
+pub const MAX_RESULTS: usize = 200;
+
+const BAR_H: f32 = 280.0;
+const ROW_H: f32 = 22.0;
+const MAX_VISIBLE: usize = 10;
+
+/// Una entrada del catálogo de comandos que el host arma.
+///
+/// Los campos son convencionales:
+/// - `id`: identificador opaco, único dentro del catálogo del host.
+///   El host lo recibe en [`PaletteAction::Invoke`] y hace match a su
+///   propio Msg. Por convención, formato `"namespace.action"` (ej.
+///   `"editor.save"`, `"terminal.open"`).
+/// - `title`: lo que el user lee. Idealmente en lengua de la app.
+/// - `group`: categoría visible a la derecha de la fila (ej. `"Editor"`,
+///   `"Terminal"`, `"LSP"`). Sirve para escanear visualmente.
+/// - `shortcut`: hint textual del atajo nativo del comando, si existe
+///   (ej. `"Ctrl+S"`). Sólo decorativo — el módulo no captura nada
+///   distinto a Enter/Esc/↑↓.
+#[derive(Debug, Clone)]
+pub struct Command {
+    pub id: String,
+    pub title: String,
+    pub group: String,
+    pub shortcut: Option<String>,
+}
+
+impl Command {
+    pub fn new(
+        id: impl Into<String>,
+        title: impl Into<String>,
+        group: impl Into<String>,
+    ) -> Self {
+        Self { id: id.into(), title: title.into(), group: group.into(), shortcut: None }
+    }
+
+    pub fn with_shortcut(mut self, s: impl Into<String>) -> Self {
+        self.shortcut = Some(s.into());
+        self
+    }
+}
+
+/// Estado interno. `results` son índices al slice de commands que pasa
+/// el host: el módulo no copia, sólo guarda índices.
+pub struct PaletteState {
+    pub input: TextInputState,
+    pub results: Vec<usize>,
+    pub selected: usize,
+}
+
+impl Default for PaletteState {
+    fn default() -> Self {
+        Self::new_empty()
+    }
+}
+
+impl PaletteState {
+    pub fn new_empty() -> Self {
+        Self {
+            input: TextInputState::new(),
+            results: Vec::new(),
+            selected: 0,
+        }
+    }
+
+    /// Crea un palette pre-poblado con todos los comandos sin filtro,
+    /// listo para mostrar después del shortcut de apertura.
+    pub fn new(commands: &[Command]) -> Self {
+        let mut s = Self::new_empty();
+        refilter(&mut s, commands);
+        s
+    }
+}
+
+/// Vocabulario interno. El host lo wrapea en su Msg.
+#[derive(Clone)]
+pub enum PaletteMsg {
+    /// Símbolo conveniente para que el host dispatche al detectar el
+    /// shortcut. El módulo no construye el state él mismo — eso lo hace
+    /// el host con la lista canónica de commands.
+    Open,
+    Close,
+    KeyInput(KeyEvent),
+    Nav(i32),
+    /// Enter: invoca el comando seleccionado.
+    Apply,
+}
+
+/// Efecto solicitado al host.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum PaletteAction {
+    None,
+    /// El host debería remover el state del modelo.
+    Close,
+    /// El host debería ejecutar el comando con este `id`. El módulo NO
+    /// se cierra automáticamente — el host decide (típicamente sí, igual
+    /// que un menú).
+    Invoke(String),
+}
+
+/// Aplica un mensaje al estado.
+pub fn apply(
+    state: &mut PaletteState,
+    msg: PaletteMsg,
+    commands: &[Command],
+) -> PaletteAction {
+    match msg {
+        PaletteMsg::Open => PaletteAction::None,
+        PaletteMsg::Close => PaletteAction::Close,
+        PaletteMsg::KeyInput(ev) => {
+            state.input.apply_key(&ev);
+            refilter(state, commands);
+            PaletteAction::None
+        }
+        PaletteMsg::Nav(d) => {
+            let n = state.results.len() as i32;
+            if n > 0 {
+                state.selected = (state.selected as i32 + d).rem_euclid(n) as usize;
+            }
+            PaletteAction::None
+        }
+        PaletteMsg::Apply => {
+            let Some(&cmd_idx) = state.results.get(state.selected) else {
+                return PaletteAction::None;
+            };
+            let Some(cmd) = commands.get(cmd_idx) else {
+                return PaletteAction::None;
+            };
+            PaletteAction::Invoke(cmd.id.clone())
+        }
+    }
+}
+
+/// Routing de teclas cuando el palette está abierto.
+pub fn on_key(_state: &PaletteState, event: &KeyEvent) -> Option<PaletteMsg> {
+    if event.state != KeyState::Pressed {
+        return None;
+    }
+    Some(match &event.key {
+        Key::Named(NamedKey::Escape) => PaletteMsg::Close,
+        Key::Named(NamedKey::Enter) => PaletteMsg::Apply,
+        Key::Named(NamedKey::ArrowDown) => PaletteMsg::Nav(1),
+        Key::Named(NamedKey::ArrowUp) => PaletteMsg::Nav(-1),
+        _ => PaletteMsg::KeyInput(event.clone()),
+    })
+}
+
+/// El atajo recomendado: **Ctrl+Shift+P**, igual que VS Code.
+pub fn open_shortcut(event: &KeyEvent) -> bool {
+    event.state == KeyState::Pressed
+        && event.modifiers.ctrl
+        && event.modifiers.shift
+        && matches!(&event.key, Key::Character(s) if s.eq_ignore_ascii_case("p"))
+}
+
+/// Recalcula `state.results` según el query del input. Fuzzy match con
+/// `nucleo-matcher` sobre `"title · group"` (mismo string para que el
+/// usuario pueda buscar por grupo: "term" matchea "Open Terminal · Editor").
+/// Query vacío = lista completa ordenada como vino del host.
+/// Cap: [`MAX_RESULTS`].
+pub fn refilter(state: &mut PaletteState, commands: &[Command]) {
+    let q = state.input.text();
+    if q.trim().is_empty() {
+        state.results = (0..commands.len().min(MAX_RESULTS)).collect();
+        state.selected = 0;
+        return;
+    }
+    use nucleo_matcher::{
+        pattern::{CaseMatching, Normalization, Pattern},
+        Config, Matcher, Utf32Str,
+    };
+    let mut matcher = Matcher::new(Config::DEFAULT);
+    let pat = Pattern::parse(&q, CaseMatching::Smart, Normalization::Smart);
+    let mut scored: Vec<(u32, usize)> = Vec::new();
+    let mut buf = Vec::new();
+    for (i, cmd) in commands.iter().enumerate() {
+        let hay_str = format!("{} {}", cmd.title, cmd.group);
+        buf.clear();
+        let hay = Utf32Str::new(&hay_str, &mut buf);
+        if let Some(score) = pat.score(hay, &mut matcher) {
+            scored.push((score, i));
+        }
+    }
+    scored.sort_by(|a, b| b.0.cmp(&a.0).then(a.1.cmp(&b.1)));
+    scored.truncate(MAX_RESULTS);
+    state.results = scored.into_iter().map(|(_, i)| i).collect();
+    state.selected = 0;
+}
+
+/// Paleta visual.
+#[derive(Debug, Clone)]
+pub struct PalettePalette {
+    pub bg_panel: Color,
+    pub bg_header: Color,
+    pub bg_selected: Color,
+    pub fg_text: Color,
+    pub fg_muted: Color,
+    theme: llimphi_theme::Theme,
+}
+
+impl PalettePalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_panel: t.bg_panel,
+            bg_header: t.bg_panel_alt,
+            bg_selected: t.bg_selected,
+            fg_text: t.fg_text,
+            fg_muted: t.fg_muted,
+            theme: t.clone(),
+        }
+    }
+}
+
+/// Render del overlay. `to_host` mapea cada `PaletteMsg` interno al
+/// `Msg` de la app.
+pub fn view<HostMsg, F>(
+    state: &PaletteState,
+    commands: &[Command],
+    palette: &PalettePalette,
+    to_host: F,
+) -> View<HostMsg>
+where
+    HostMsg: Clone + 'static,
+    F: Fn(PaletteMsg) -> HostMsg + Copy + 'static,
+{
+    let header = if state.results.is_empty() {
+        format!("command palette · sin matches · {} comandos · Esc cierra", commands.len())
+    } else {
+        format!(
+            "command palette · {} / {} · ↓↑ navega · Enter ejecuta · Esc cierra",
+            state.selected + 1,
+            state.results.len(),
+        )
+    };
+
+    let header_view = View::new(Style {
+        size: Size { width: percent(1.0_f32), height: length(18.0_f32) },
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_header)
+    .text_aligned(header, 10.0, palette.fg_muted, Alignment::Start);
+
+    let tp = TextInputPalette::from_theme(&palette.theme);
+    let input_view = View::new(Style {
+        size: Size { width: percent(1.0_f32), height: length(26.0_f32) },
+        padding: Rect {
+            left: length(6.0_f32),
+            right: length(6.0_f32),
+            top: length(2.0_f32),
+            bottom: length(2.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .children(vec![text_input_view(
+        &state.input,
+        "filtro: nombre del comando…",
+        true,
+        &tp,
+        to_host(PaletteMsg::Open),
+    )]);
+
+    let visible_start = state.selected.saturating_sub(MAX_VISIBLE.saturating_sub(1));
+    let visible_end = (visible_start + MAX_VISIBLE).min(state.results.len());
+    let mut rows: Vec<View<HostMsg>> = Vec::with_capacity(MAX_VISIBLE);
+    for i in visible_start..visible_end {
+        let Some(&cmd_idx) = state.results.get(i) else { continue };
+        let Some(cmd) = commands.get(cmd_idx) else { continue };
+        let label = match (&cmd.shortcut, cmd.group.as_str()) {
+            (Some(sc), grp) if !grp.is_empty() => {
+                format!("{}    {}    [{sc}]", cmd.title, cmd.group)
+            }
+            (Some(sc), _) => format!("{}    [{sc}]", cmd.title),
+            (None, grp) if !grp.is_empty() => format!("{}    {}", cmd.title, cmd.group),
+            (None, _) => cmd.title.clone(),
+        };
+        let selected = i == state.selected;
+        let bg = if selected { palette.bg_selected } else { palette.bg_panel };
+        let fg = if selected { palette.fg_text } else { palette.fg_muted };
+        rows.push(
+            View::new(Style {
+                size: Size { width: percent(1.0_f32), height: length(ROW_H) },
+                padding: Rect {
+                    left: length(10.0_f32),
+                    right: length(8.0_f32),
+                    top: length(0.0_f32),
+                    bottom: length(0.0_f32),
+                },
+                align_items: Some(AlignItems::Center),
+                flex_shrink: 0.0,
+                ..Default::default()
+            })
+            .fill(bg)
+            .text_aligned(label, 12.0, fg, Alignment::Start),
+        );
+    }
+
+    let mut children: Vec<View<HostMsg>> = Vec::with_capacity(2 + rows.len());
+    children.push(header_view);
+    children.push(input_view);
+    children.extend(rows);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size { width: percent(1.0_f32), height: length(BAR_H) },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .children(children)
+}
diff --git a/modules/command-palette/tests/smoke.rs b/modules/command-palette/tests/smoke.rs
new file mode 100644
index 0000000..5a6a6cd
--- /dev/null
+++ b/modules/command-palette/tests/smoke.rs
@@ -0,0 +1,125 @@
+//! Smoke tests del fuzzy match y del flujo `Open → KeyInput → Apply`.
+//! No requieren backend gráfico — sólo el reducer puro y `refilter`.
+
+use llimphi_module_command_palette::{
+    self as palette, Command, PaletteAction, PaletteMsg, PaletteState,
+};
+use llimphi_ui::{Key, KeyEvent, KeyState, Modifiers};
+
+fn seed() -> Vec<Command> {
+    vec![
+        Command::new("editor.save", "Save File", "Editor").with_shortcut("Ctrl+S"),
+        Command::new("editor.open", "Open File", "Editor").with_shortcut("Ctrl+P"),
+        Command::new("editor.findInFiles", "Find in Files", "Editor")
+            .with_shortcut("Ctrl+Shift+F"),
+        Command::new("terminal.open", "Open Terminal", "Terminal")
+            .with_shortcut("Ctrl+`"),
+        Command::new("lsp.format", "Format Document", "LSP")
+            .with_shortcut("Ctrl+Alt+L"),
+        Command::new("lsp.goto", "Go to Definition", "LSP").with_shortcut("F12"),
+    ]
+}
+
+fn key_char(c: &str) -> KeyEvent {
+    KeyEvent {
+        key: Key::Character(c.into()),
+        state: KeyState::Pressed,
+        text: Some(c.into()),
+        modifiers: Modifiers::default(),
+        repeat: false,
+    }
+}
+
+#[test]
+fn estado_vacio_lista_todos_los_comandos() {
+    let cmds = seed();
+    let s = PaletteState::new(&cmds);
+    assert_eq!(s.results.len(), cmds.len());
+    assert_eq!(s.selected, 0);
+}
+
+#[test]
+fn fuzzy_match_acerca_el_comando_correcto_al_top() {
+    let cmds = seed();
+    let mut s = PaletteState::new(&cmds);
+
+    // Tipear "term" debería rankear "Open Terminal" o "Terminal" arriba.
+    for ch in ["t", "e", "r", "m"] {
+        let action = palette::apply(&mut s, PaletteMsg::KeyInput(key_char(ch)), &cmds);
+        assert_eq!(action, PaletteAction::None);
+    }
+    let top = s.results.first().expect("debe haber al menos un match");
+    assert_eq!(
+        cmds[*top].id, "terminal.open",
+        "esperaba terminal.open al top, vi {:?}",
+        cmds[*top].title
+    );
+}
+
+#[test]
+fn enter_emite_invoke_con_el_id_seleccionado() {
+    let cmds = seed();
+    let mut s = PaletteState::new(&cmds);
+
+    for ch in ["s", "a", "v"] {
+        palette::apply(&mut s, PaletteMsg::KeyInput(key_char(ch)), &cmds);
+    }
+    let action = palette::apply(&mut s, PaletteMsg::Apply, &cmds);
+    assert_eq!(action, PaletteAction::Invoke("editor.save".into()));
+}
+
+#[test]
+fn nav_circula_por_los_resultados() {
+    let cmds = seed();
+    let mut s = PaletteState::new(&cmds);
+    assert_eq!(s.selected, 0);
+
+    palette::apply(&mut s, PaletteMsg::Nav(1), &cmds);
+    assert_eq!(s.selected, 1);
+
+    // Saltar al final desde la cima con -1 (wrap-around).
+    let mut s = PaletteState::new(&cmds);
+    palette::apply(&mut s, PaletteMsg::Nav(-1), &cmds);
+    assert_eq!(s.selected, cmds.len() - 1);
+}
+
+#[test]
+fn escape_emite_close() {
+    let cmds = seed();
+    let mut s = PaletteState::new(&cmds);
+    let action = palette::apply(&mut s, PaletteMsg::Close, &cmds);
+    assert_eq!(action, PaletteAction::Close);
+}
+
+#[test]
+fn open_shortcut_es_ctrl_shift_p() {
+    use llimphi_ui::Modifiers;
+    let mk = |ctrl: bool, shift: bool, c: &str| KeyEvent {
+        key: Key::Character(c.into()),
+        state: KeyState::Pressed,
+        text: Some(c.into()),
+        modifiers: Modifiers { ctrl, shift, ..Modifiers::default() },
+        repeat: false,
+    };
+    assert!(palette::open_shortcut(&mk(true, true, "p")));
+    assert!(palette::open_shortcut(&mk(true, true, "P")));
+    // Sin shift no — ese es Ctrl+P del file-picker.
+    assert!(!palette::open_shortcut(&mk(true, false, "p")));
+    // Sin ctrl no.
+    assert!(!palette::open_shortcut(&mk(false, true, "p")));
+    // Otra letra no.
+    assert!(!palette::open_shortcut(&mk(true, true, "q")));
+}
+
+#[test]
+fn busqueda_por_grupo_funciona() {
+    let cmds = seed();
+    let mut s = PaletteState::new(&cmds);
+    // "lsp" debería traer Format y Goto Definition (ambos del grupo LSP).
+    for ch in ["l", "s", "p"] {
+        palette::apply(&mut s, PaletteMsg::KeyInput(key_char(ch)), &cmds);
+    }
+    let ids: Vec<&str> = s.results.iter().map(|&i| cmds[i].id.as_str()).collect();
+    assert!(ids.contains(&"lsp.format"), "esperaba lsp.format en {ids:?}");
+    assert!(ids.contains(&"lsp.goto"), "esperaba lsp.goto en {ids:?}");
+}
diff --git a/modules/diff-viewer/Cargo.toml b/modules/diff-viewer/Cargo.toml
new file mode 100644
index 0000000..4fba92d
--- /dev/null
+++ b/modules/diff-viewer/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-module-diff-viewer"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-module-diff-viewer — visualización side-by-side de cambios entre dos textos. Módulo Llimphi: el host provee before/after (typically HEAD vs working tree, o snapshot vs current buffer), el módulo computa el diff con `similar` y lo presenta en dos columnas con marcadores +/- y números de línea."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+similar = { workspace = true }
diff --git a/modules/diff-viewer/LEEME.md b/modules/diff-viewer/LEEME.md
new file mode 100644
index 0000000..b295b14
--- /dev/null
+++ b/modules/diff-viewer/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-module-diff-viewer
+
+> Diff side-by-side de [llimphi](../../README.md).
+
+Toma dos textos y muestra diff por línea: inserciones, eliminaciones, modificaciones. Algoritmo Myers; resaltado intra-línea opcional.
diff --git a/modules/diff-viewer/README.md b/modules/diff-viewer/README.md
new file mode 100644
index 0000000..a082f50
--- /dev/null
+++ b/modules/diff-viewer/README.md
@@ -0,0 +1,5 @@
+# llimphi-module-diff-viewer
+
+> Side-by-side diff of [llimphi](../../README.md).
+
+Takes two texts and shows line-by-line diff: insertions, deletions, modifications. Myers algorithm; optional intra-line highlight.
diff --git a/modules/diff-viewer/src/lib.rs b/modules/diff-viewer/src/lib.rs
new file mode 100644
index 0000000..3d96f03
--- /dev/null
+++ b/modules/diff-viewer/src/lib.rs
@@ -0,0 +1,398 @@
+//! `llimphi-module-diff-viewer` — visualización side-by-side de cambios.
+//!
+//! Equivalente al "Compare with Saved" de VS Code o el panel "Compare"
+//! de JetBrains, pero como módulo Llimphi enchufable. El host le pasa
+//! dos textos (`before`/`after`) y dos etiquetas (`"HEAD"`, `"Working
+//! Tree"`, `"Buffer"` — lo que tenga sentido en su contexto), y el
+//! módulo computa el diff line-based con [`similar`] y lo renderiza
+//! en dos columnas con marcadores `+`/`-` y números de línea.
+//!
+//! El módulo no abre archivos, no llama a `git`, no toca disco. Toda
+//! la fuente del diff la decide el host: puede comparar el disco vs
+//! el buffer dirty, dos branches, dos snapshots de history, etc.
+//!
+//! Sigue el contrato Llimphi de `docs/MODULES.md`:
+//! `State + Msg + Action + apply/on_key/open_shortcut/view + Palette`.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{Key, KeyEvent, KeyState, NamedKey, View};
+use similar::{ChangeTag, TextDiff};
+
+/// Capabilities que aporta este módulo al host.
+pub const CAPABILITIES: &[&str] = &["editor.diff-viewer"];
+
+const HEADER_H: f32 = 18.0;
+const ROW_H: f32 = 15.0;
+
+/// Una línea del diff alineada para render side-by-side.
+///
+/// El render usa dos celdas por fila (izquierda = `before`, derecha =
+/// `after`). En una línea `Equal`, ambas celdas tienen el mismo
+/// contenido. En `Delete`, sólo la izquierda; en `Insert`, sólo la
+/// derecha. La struct cumple las dos roles para simplificar el render.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct DiffRow {
+    pub kind: DiffKind,
+    /// Contenido de la celda izquierda (Equal o Delete) o vacío.
+    pub left: Option<DiffCell>,
+    /// Contenido de la celda derecha (Equal o Insert) o vacío.
+    pub right: Option<DiffCell>,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct DiffCell {
+    /// Número de línea 1-based en el lado correspondiente.
+    pub line_no: usize,
+    pub text: String,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum DiffKind {
+    Equal,
+    Delete,
+    Insert,
+}
+
+/// Estado del panel.
+pub struct DiffState {
+    pub before_label: String,
+    pub after_label: String,
+    pub rows: Vec<DiffRow>,
+    pub scroll: usize,
+    /// Conteo agregado para mostrar en el header (`+12 / -3` etc.).
+    pub stats: DiffStats,
+}
+
+#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
+pub struct DiffStats {
+    pub inserts: usize,
+    pub deletes: usize,
+    pub equals: usize,
+}
+
+impl DiffState {
+    /// Construye el state computando el diff entre `before` y `after`.
+    /// Líneas se separan por '\n'; el último '\n' se conserva como
+    /// separador (no aparece como línea extra vacía).
+    pub fn new(
+        before_label: impl Into<String>,
+        after_label: impl Into<String>,
+        before: &str,
+        after: &str,
+    ) -> Self {
+        let (rows, stats) = compute_rows(before, after);
+        Self {
+            before_label: before_label.into(),
+            after_label: after_label.into(),
+            rows,
+            scroll: 0,
+            stats,
+        }
+    }
+}
+
+/// Computa las filas alineadas a partir de los dos textos. La salida
+/// preserva el orden lineal del archivo: bloques `Equal` mantienen las
+/// líneas pareadas; un `Delete` que no tiene contraparte en el otro
+/// lado aparece con `right = None`, y viceversa para `Insert`. No se
+/// emparejan visualmente delete con insert — siguen la convención de
+/// VS Code, que los muestra como líneas separadas.
+pub fn compute_rows(before: &str, after: &str) -> (Vec<DiffRow>, DiffStats) {
+    let diff = TextDiff::from_lines(before, after);
+    let mut rows: Vec<DiffRow> = Vec::new();
+    let mut stats = DiffStats::default();
+    let mut left_no = 0usize;
+    let mut right_no = 0usize;
+    for change in diff.iter_all_changes() {
+        let text = change.value().trim_end_matches('\n').to_string();
+        match change.tag() {
+            ChangeTag::Equal => {
+                left_no += 1;
+                right_no += 1;
+                stats.equals += 1;
+                rows.push(DiffRow {
+                    kind: DiffKind::Equal,
+                    left: Some(DiffCell { line_no: left_no, text: text.clone() }),
+                    right: Some(DiffCell { line_no: right_no, text }),
+                });
+            }
+            ChangeTag::Delete => {
+                left_no += 1;
+                stats.deletes += 1;
+                rows.push(DiffRow {
+                    kind: DiffKind::Delete,
+                    left: Some(DiffCell { line_no: left_no, text }),
+                    right: None,
+                });
+            }
+            ChangeTag::Insert => {
+                right_no += 1;
+                stats.inserts += 1;
+                rows.push(DiffRow {
+                    kind: DiffKind::Insert,
+                    left: None,
+                    right: Some(DiffCell { line_no: right_no, text }),
+                });
+            }
+        }
+    }
+    (rows, stats)
+}
+
+/// Vocabulario interno. El host lo wrapea en su Msg.
+#[derive(Clone)]
+pub enum DiffMsg {
+    Open,
+    Close,
+    /// Scroll vertical en líneas (positivo = baja).
+    Scroll(i32),
+    /// Salta al próximo hunk (∆+/-) en dirección.
+    NextHunk,
+    PrevHunk,
+}
+
+/// Efecto solicitado al host.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum DiffAction {
+    None,
+    /// El host debería remover el state del modelo.
+    Close,
+}
+
+pub fn apply(state: &mut DiffState, msg: DiffMsg, visible_rows: usize) -> DiffAction {
+    match msg {
+        DiffMsg::Open => DiffAction::None,
+        DiffMsg::Close => DiffAction::Close,
+        DiffMsg::Scroll(delta) => {
+            scroll_by(state, delta, visible_rows);
+            DiffAction::None
+        }
+        DiffMsg::NextHunk => {
+            jump_to_hunk(state, true, visible_rows);
+            DiffAction::None
+        }
+        DiffMsg::PrevHunk => {
+            jump_to_hunk(state, false, visible_rows);
+            DiffAction::None
+        }
+    }
+}
+
+fn scroll_by(state: &mut DiffState, delta: i32, visible_rows: usize) {
+    let max_scroll = state.rows.len().saturating_sub(visible_rows);
+    let new_scroll = (state.scroll as i64 + delta as i64).max(0) as usize;
+    state.scroll = new_scroll.min(max_scroll);
+}
+
+/// Busca la próxima fila con `kind != Equal` en la dirección dada,
+/// empezando justo después/antes del scroll actual. Si no hay más,
+/// no-op.
+fn jump_to_hunk(state: &mut DiffState, forward: bool, visible_rows: usize) {
+    let start = state.scroll;
+    let n = state.rows.len();
+    let found = if forward {
+        (start + 1..n).find(|&i| !matches!(state.rows[i].kind, DiffKind::Equal))
+    } else {
+        (0..start.min(n)).rev().find(|&i| !matches!(state.rows[i].kind, DiffKind::Equal))
+    };
+    if let Some(i) = found {
+        let max_scroll = n.saturating_sub(visible_rows);
+        state.scroll = i.min(max_scroll);
+    }
+}
+
+/// Routing de teclas cuando el panel está abierto.
+pub fn on_key(_state: &DiffState, event: &KeyEvent) -> Option<DiffMsg> {
+    if event.state != KeyState::Pressed {
+        return None;
+    }
+    Some(match &event.key {
+        Key::Named(NamedKey::Escape) => DiffMsg::Close,
+        Key::Named(NamedKey::ArrowDown) => DiffMsg::Scroll(1),
+        Key::Named(NamedKey::ArrowUp) => DiffMsg::Scroll(-1),
+        Key::Named(NamedKey::PageDown) => DiffMsg::Scroll(20),
+        Key::Named(NamedKey::PageUp) => DiffMsg::Scroll(-20),
+        Key::Named(NamedKey::Home) => DiffMsg::Scroll(-(i32::MAX / 4)),
+        Key::Named(NamedKey::End) => DiffMsg::Scroll(i32::MAX / 4),
+        Key::Character(s) if s == "n" => DiffMsg::NextHunk,
+        Key::Character(s) if s == "N" => DiffMsg::PrevHunk,
+        _ => return None,
+    })
+}
+
+/// El atajo recomendado: **Ctrl+Shift+D**, similar al "Compare with
+/// Saved" de VS Code (que usa Ctrl+Shift+P + comando).
+pub fn open_shortcut(event: &KeyEvent) -> bool {
+    event.state == KeyState::Pressed
+        && event.modifiers.ctrl
+        && event.modifiers.shift
+        && matches!(&event.key, Key::Character(s) if s.eq_ignore_ascii_case("d"))
+}
+
+/// Paleta visual con colores diff convencionales (verde para insert,
+/// rojo apagado para delete).
+#[derive(Debug, Clone)]
+pub struct DiffPalette {
+    pub bg_panel: Color,
+    pub bg_header: Color,
+    pub bg_insert: Color,
+    pub bg_delete: Color,
+    pub bg_empty: Color,
+    pub fg_text: Color,
+    pub fg_muted: Color,
+    pub fg_insert: Color,
+    pub fg_delete: Color,
+}
+
+impl DiffPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        // Verde/rojo apagados — visibles sobre fondo oscuro pero sin
+        // saturar. Si el theme expone colores semánticos de diff en
+        // el futuro, los usamos; por ahora hardcoded.
+        Self {
+            bg_panel: t.bg_panel,
+            bg_header: t.bg_panel_alt,
+            bg_insert: Color::from_rgba8(40, 80, 50, 255),
+            bg_delete: Color::from_rgba8(90, 40, 45, 255),
+            bg_empty: t.bg_panel_alt,
+            fg_text: t.fg_text,
+            fg_muted: t.fg_muted,
+            fg_insert: Color::from_rgba8(170, 230, 180, 255),
+            fg_delete: Color::from_rgba8(240, 180, 185, 255),
+        }
+    }
+}
+
+/// Render del panel side-by-side. `height_px` es la altura total
+/// disponible; el módulo divide entre el header de 18 px y la grid.
+pub fn view<HostMsg, F>(
+    state: &DiffState,
+    palette: &DiffPalette,
+    height_px: f32,
+    to_host: F,
+) -> View<HostMsg>
+where
+    HostMsg: Clone + 'static,
+    F: Fn(DiffMsg) -> HostMsg + Copy + 'static,
+{
+    let _ = to_host; // v0 no monta eventos puntuales sobre filas
+
+    let header_text = format!(
+        "diff · {} ↔ {} · +{} -{} ={} · ↑↓ scroll · n/N hunk · Esc cierra",
+        state.before_label,
+        state.after_label,
+        state.stats.inserts,
+        state.stats.deletes,
+        state.stats.equals,
+    );
+    let header = View::new(Style {
+        size: Size { width: percent(1.0_f32), height: length(HEADER_H) },
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_header)
+    .text_aligned(header_text, 10.0, palette.fg_muted, Alignment::Start);
+
+    let grid_h = (height_px - HEADER_H).max(0.0);
+    let max_rows = ((grid_h / ROW_H) as usize).max(1);
+    let end = (state.scroll + max_rows).min(state.rows.len());
+
+    let mut grid_rows: Vec<View<HostMsg>> = Vec::with_capacity(max_rows);
+    for row in &state.rows[state.scroll..end] {
+        grid_rows.push(render_row(row, palette));
+    }
+    while grid_rows.len() < max_rows {
+        // Padding visual para mantener altura constante.
+        grid_rows.push(empty_row(palette));
+    }
+
+    let mut children: Vec<View<HostMsg>> = Vec::with_capacity(1 + grid_rows.len());
+    children.push(header);
+    children.extend(grid_rows);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size { width: percent(1.0_f32), height: length(height_px) },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .children(children)
+}
+
+fn render_row<HostMsg>(row: &DiffRow, palette: &DiffPalette) -> View<HostMsg>
+where
+    HostMsg: Clone + 'static,
+{
+    let (left_bg, left_fg, left_mark) = match row.kind {
+        DiffKind::Equal => (palette.bg_panel, palette.fg_text, " "),
+        DiffKind::Delete => (palette.bg_delete, palette.fg_delete, "-"),
+        DiffKind::Insert => (palette.bg_empty, palette.fg_muted, " "),
+    };
+    let (right_bg, right_fg, right_mark) = match row.kind {
+        DiffKind::Equal => (palette.bg_panel, palette.fg_text, " "),
+        DiffKind::Insert => (palette.bg_insert, palette.fg_insert, "+"),
+        DiffKind::Delete => (palette.bg_empty, palette.fg_muted, " "),
+    };
+
+    let left_text = match &row.left {
+        Some(c) => format!("{:>4} {}{}", c.line_no, left_mark, c.text),
+        None => String::new(),
+    };
+    let right_text = match &row.right {
+        Some(c) => format!("{:>4} {}{}", c.line_no, right_mark, c.text),
+        None => String::new(),
+    };
+
+    let cell = |bg: Color, fg: Color, text: String| {
+        View::new(Style {
+            flex_grow: 1.0,
+            size: Size { width: percent(0.5_f32), height: length(ROW_H) },
+            padding: Rect {
+                left: length(6.0_f32),
+                right: length(6.0_f32),
+                top: length(0.0_f32),
+                bottom: length(0.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            flex_shrink: 0.0,
+            ..Default::default()
+        })
+        .fill(bg)
+        .text_aligned(text, 10.5, fg, Alignment::Start)
+    };
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size { width: percent(1.0_f32), height: length(ROW_H) },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(vec![cell(left_bg, left_fg, left_text), cell(right_bg, right_fg, right_text)])
+}
+
+fn empty_row<HostMsg>(palette: &DiffPalette) -> View<HostMsg>
+where
+    HostMsg: Clone + 'static,
+{
+    View::new(Style {
+        size: Size { width: percent(1.0_f32), height: length(ROW_H) },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+}
diff --git a/modules/diff-viewer/tests/smoke.rs b/modules/diff-viewer/tests/smoke.rs
new file mode 100644
index 0000000..bd0dbc8
--- /dev/null
+++ b/modules/diff-viewer/tests/smoke.rs
@@ -0,0 +1,155 @@
+//! Smoke tests del cómputo de filas y el routing de teclas. Sin
+//! backend gráfico — pruebas puras sobre `compute_rows` y `apply`.
+
+use llimphi_module_diff_viewer::{
+    self as diff, DiffAction, DiffKind, DiffMsg, DiffState,
+};
+
+#[test]
+fn diff_basico_inserts_y_deletes() {
+    let before = "a\nb\nc\n";
+    let after = "a\nB\nc\nd\n";
+    let (rows, stats) = diff::compute_rows(before, after);
+
+    // El diff esperado:
+    //   = a / a
+    //   - b
+    //   + B
+    //   = c / c
+    //   + d
+    assert_eq!(stats.equals, 2);
+    assert_eq!(stats.deletes, 1);
+    assert_eq!(stats.inserts, 2);
+
+    assert_eq!(rows[0].kind, DiffKind::Equal);
+    assert_eq!(rows[0].left.as_ref().unwrap().text, "a");
+    assert_eq!(rows[0].right.as_ref().unwrap().text, "a");
+
+    // El primer cambio debe ser un Delete o Insert (similar agrupa);
+    // verificamos que B aparezca y b no.
+    let texts_left: Vec<&str> = rows
+        .iter()
+        .filter_map(|r| r.left.as_ref().map(|c| c.text.as_str()))
+        .collect();
+    let texts_right: Vec<&str> = rows
+        .iter()
+        .filter_map(|r| r.right.as_ref().map(|c| c.text.as_str()))
+        .collect();
+    assert!(texts_left.contains(&"b"));
+    assert!(texts_right.contains(&"B"));
+    assert!(texts_right.contains(&"d"));
+}
+
+#[test]
+fn numeros_de_linea_son_correctos() {
+    let before = "alpha\nbeta\ngamma\n";
+    let after = "alpha\nBETA\ngamma\ndelta\n";
+    let (rows, _) = diff::compute_rows(before, after);
+
+    // alpha en línea 1 de ambos.
+    let alpha_row = rows.iter().find(|r| {
+        r.left.as_ref().map(|c| c.text == "alpha").unwrap_or(false)
+    }).unwrap();
+    assert_eq!(alpha_row.left.as_ref().unwrap().line_no, 1);
+    assert_eq!(alpha_row.right.as_ref().unwrap().line_no, 1);
+
+    // beta (delete) en línea 2 izquierda.
+    let beta_row = rows.iter().find(|r| {
+        r.left.as_ref().map(|c| c.text == "beta").unwrap_or(false)
+    }).unwrap();
+    assert_eq!(beta_row.left.as_ref().unwrap().line_no, 2);
+    assert!(beta_row.right.is_none());
+
+    // delta (insert) en línea 4 derecha.
+    let delta_row = rows.iter().find(|r| {
+        r.right.as_ref().map(|c| c.text == "delta").unwrap_or(false)
+    }).unwrap();
+    assert_eq!(delta_row.right.as_ref().unwrap().line_no, 4);
+    assert!(delta_row.left.is_none());
+}
+
+#[test]
+fn textos_identicos_solo_equal() {
+    let text = "uno\ndos\ntres\n";
+    let (rows, stats) = diff::compute_rows(text, text);
+    assert_eq!(rows.len(), 3);
+    assert!(rows.iter().all(|r| r.kind == DiffKind::Equal));
+    assert_eq!(stats.inserts, 0);
+    assert_eq!(stats.deletes, 0);
+    assert_eq!(stats.equals, 3);
+}
+
+#[test]
+fn scroll_no_excede_los_limites() {
+    let before = (0..50).map(|i| i.to_string()).collect::<Vec<_>>().join("\n");
+    let after = before.clone(); // identical → 50 Equal rows
+    let mut state = DiffState::new("a", "b", &before, &after);
+    assert_eq!(state.scroll, 0);
+
+    // Scroll grande hacia abajo: tope = 50 - visible_rows.
+    diff::apply(&mut state, DiffMsg::Scroll(1000), 10);
+    assert_eq!(state.scroll, 40);
+
+    // Scroll arriba: tope mínimo 0.
+    diff::apply(&mut state, DiffMsg::Scroll(-1000), 10);
+    assert_eq!(state.scroll, 0);
+}
+
+#[test]
+fn next_hunk_salta_a_la_proxima_diferencia() {
+    // 20 líneas iguales + 2 cambios + 20 más. visible_rows=5 deja
+    // espacio real para scrollear.
+    let mut before = String::new();
+    let mut after = String::new();
+    for i in 0..20 {
+        before.push_str(&format!("eq{i}\n"));
+        after.push_str(&format!("eq{i}\n"));
+    }
+    before.push_str("DEL\n");
+    after.push_str("INS\n");
+    for i in 20..40 {
+        before.push_str(&format!("eq{i}\n"));
+        after.push_str(&format!("eq{i}\n"));
+    }
+    let mut state = DiffState::new("a", "b", &before, &after);
+    assert_eq!(state.scroll, 0);
+
+    diff::apply(&mut state, DiffMsg::NextHunk, 5);
+    assert!(state.scroll > 0, "scroll quedó en 0 — no saltó al hunk");
+    let row = &state.rows[state.scroll];
+    assert!(
+        !matches!(row.kind, DiffKind::Equal),
+        "esperaba aterrizar en un hunk, vi {:?}",
+        row.kind
+    );
+
+    // PrevHunk: vuelve al inicio (no hay hunk antes del primer cambio).
+    diff::apply(&mut state, DiffMsg::PrevHunk, 5);
+    // Puede quedarse en el mismo hunk si era el único accesible hacia
+    // atrás, o saltar más arriba. Lo único que verificamos es que no
+    // hubo panic ni scroll fuera de rango.
+    assert!(state.scroll < state.rows.len());
+}
+
+#[test]
+fn escape_cierra() {
+    let mut state = DiffState::new("a", "b", "x\n", "y\n");
+    let action = diff::apply(&mut state, DiffMsg::Close, 10);
+    assert_eq!(action, DiffAction::Close);
+}
+
+#[test]
+fn open_shortcut_es_ctrl_shift_d() {
+    use llimphi_ui::{Key, KeyEvent, KeyState, Modifiers};
+    let mk = |ctrl: bool, shift: bool, c: &str| KeyEvent {
+        key: Key::Character(c.into()),
+        state: KeyState::Pressed,
+        text: Some(c.into()),
+        modifiers: Modifiers { ctrl, shift, ..Modifiers::default() },
+        repeat: false,
+    };
+    assert!(diff::open_shortcut(&mk(true, true, "d")));
+    assert!(diff::open_shortcut(&mk(true, true, "D")));
+    assert!(!diff::open_shortcut(&mk(true, false, "d")));
+    assert!(!diff::open_shortcut(&mk(false, true, "d")));
+}
diff --git a/modules/fif/Cargo.toml b/modules/fif/Cargo.toml
new file mode 100644
index 0000000..c8de60f
--- /dev/null
+++ b/modules/fif/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-module-fif"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-module-fif — find-in-files reusable (estilo JetBrains). Módulo Llimphi: state + Msg + Action + apply/on_key/view. Cualquier app que mantenga una lista de paths puede enchufarlo."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-text-input = { workspace = true }
diff --git a/modules/fif/LEEME.md b/modules/fif/LEEME.md
new file mode 100644
index 0000000..4c6fe9a
--- /dev/null
+++ b/modules/fif/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-module-fif
+
+> Find-in-files de [llimphi](../../README.md).
+
+Buscar en todos los archivos del workspace con regex + glob de filenames. Streaming de resultados (no espera al fin del scan). Click en resultado abre el archivo en la línea.
diff --git a/modules/fif/README.md b/modules/fif/README.md
new file mode 100644
index 0000000..fa072a4
--- /dev/null
+++ b/modules/fif/README.md
@@ -0,0 +1,5 @@
+# llimphi-module-fif
+
+> Find-in-files of [llimphi](../../README.md).
+
+Search across all workspace files with regex + filename glob. Streamed results (doesn't wait for scan end). Click on result opens the file at the line.
diff --git a/modules/fif/src/lib.rs b/modules/fif/src/lib.rs
new file mode 100644
index 0000000..35165aa
--- /dev/null
+++ b/modules/fif/src/lib.rs
@@ -0,0 +1,815 @@
+//! `llimphi-module-fif` — find-in-files reutilizable (estilo JetBrains).
+//!
+//! Módulo Llimphi con dos vistas independientes:
+//!
+//! - [`view_dialog`] — popup compacto (header + input) que el host pinta
+//!   como overlay modal centrado. Sólo visible cuando
+//!   [`FifState::dialog_open`] es `true`.
+//! - [`view_results_bar`] — barra inferior persistente con la lista de
+//!   matches. El host la pinta como tool window al pie (estilo JetBrains
+//!   "Find" tool window). Sobrevive al cierre del dialog: el user puede
+//!   Esc-cerrar el popup y seguir clickeando los resultados.
+//!
+//! El flujo típico es: `Ctrl+Shift+F` abre el dialog → tipear → Enter
+//! ejecuta `search` → resultados aparecen en la barra inferior → Esc
+//! cierra el popup pero la barra queda → click en una fila abre el
+//! archivo. Re-disparar `Ctrl+Shift+F` reabre el popup conservando los
+//! últimos resultados.
+//!
+//! ## Cómo lo enchufa una app
+//!
+//! ```ignore
+//! struct AppModel {
+//!     all_files: Vec<PathBuf>,
+//!     fif: Option<FifState>,
+//!     // …
+//! }
+//!
+//! enum AppMsg { Fif(llimphi_module_fif::FifMsg), … }
+//!
+//! // En update(model, msg):
+//! AppMsg::Fif(fm) => {
+//!     // Lazy-init en Open:
+//!     if matches!(fm, FifMsg::Open) && model.fif.is_none() {
+//!         model.fif = Some(FifState::new());
+//!     } else if matches!(fm, FifMsg::Open) {
+//!         model.fif.as_mut().unwrap().dialog_open = true;
+//!     }
+//!     let action = match model.fif.as_mut() {
+//!         Some(s) => llimphi_module_fif::apply(s, fm, &model.all_files),
+//!         None => FifAction::None,
+//!     };
+//!     match action {
+//!         FifAction::None => {}
+//!         FifAction::CloseDialog => {
+//!             if let Some(s) = model.fif.as_mut() { s.dialog_open = false; }
+//!         }
+//!         FifAction::CloseAll => model.fif = None,
+//!         FifAction::Searched { .. } => { /* actualizar status bar */ }
+//!         FifAction::OpenAt { path, line, col } => {
+//!             if let Some(s) = model.fif.as_mut() { s.dialog_open = false; }
+//!             open_path_in_app(path, line, col);
+//!         }
+//!     }
+//! }
+//!
+//! // En on_key(model, event): solo rutea cuando el dialog está visible.
+//! if let Some(state) = model.fif.as_ref() {
+//!     if let Some(fm) = llimphi_module_fif::on_key(state, event) {
+//!         return Some(AppMsg::Fif(fm));
+//!     }
+//! }
+//! if llimphi_module_fif::open_shortcut(event) {
+//!     return Some(AppMsg::Fif(FifMsg::Open));
+//! }
+//!
+//! // En view(model):
+//! //   - dialog como overlay arriba del editor:
+//! if let Some(s) = model.fif.as_ref().filter(|s| s.dialog_open) {
+//!     overlay_children.push(view_dialog(s, &palette, AppMsg::Fif));
+//! }
+//! //   - barra de resultados como panel inferior persistente:
+//! if let Some(s) = model.fif.as_ref().filter(|s| !s.results.is_empty()) {
+//!     bottom_panels.push(view_results_bar(
+//!         s, &model.all_files, &model.root, &palette, AppMsg::Fif,
+//!     ));
+//! }
+//! ```
+//!
+//! ## Por qué Action en lugar de un trait `FifHost`
+//!
+//! El módulo no toma `&mut Host` porque acoplar el módulo a un trait
+//! arrastra problemas de ownership/lifetimes en el loop tipo Elm que usa
+//! Llimphi (Model se mueve por value en update). Devolver una [`FifAction`]
+//! deja al host libre de aplicar el efecto donde y como quiera, y mantiene
+//! al módulo libre de cualquier conocimiento sobre el host.
+
+#![forbid(unsafe_code)]
+
+use std::path::{Path, PathBuf};
+use std::time::Duration;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{Key, KeyEvent, KeyState, NamedKey, View};
+use llimphi_widget_text_input::{text_input_view, TextInputPalette, TextInputState};
+
+/// Capabilities que este módulo aporta al host. Convención del protocolo
+/// Brahman Card aplicada a módulos compile-time: el host (cuando construye
+/// su [`card_core::Card`]) puede agregar esto a `provides` para anunciar
+/// — vía broker — que su instancia ofrece find-in-files al ecosistema.
+pub const CAPABILITIES: &[&str] = &["editor.find-in-files"];
+
+/// Caps razonables para que un workspace grande no funda el UI.
+pub const MAX_RESULTS: usize = 1000;
+pub const MAX_FILE_SIZE: u64 = 2_000_000;
+pub const SNIPPET_MAX_CHARS: usize = 160;
+pub const MIN_QUERY_LEN: usize = 2;
+
+const DIALOG_W: f32 = 560.0;
+const DIALOG_H: f32 = 116.0;
+const BAR_H: f32 = 220.0;
+const ROW_H: f32 = 20.0;
+const MAX_VISIBLE: usize = 9;
+
+/// Qué input tiene el foco dentro del dialog. `Tab` alterna.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum FifFocus {
+    Search,
+    Replace,
+}
+
+/// Un match individual.
+#[derive(Debug, Clone)]
+pub struct FifMatch {
+    /// Índice dentro del slice de paths que el host pasa a [`apply`] y
+    /// las vistas. Convención: el host no debe reordenar/mutar el slice
+    /// entre frames mientras el módulo esté abierto.
+    pub file_idx: usize,
+    /// 0-based.
+    pub line: usize,
+    /// 0-based, en chars (no bytes).
+    pub col: usize,
+    /// Línea matcheada trimmed-left y truncada a [`SNIPPET_MAX_CHARS`].
+    pub snippet: String,
+}
+
+/// Estado interno del módulo.
+pub struct FifState {
+    pub input: TextInputState,
+    /// Texto de reemplazo. Si vacío, `ReplaceAll` borra los matches.
+    pub replace: TextInputState,
+    pub focus: FifFocus,
+    pub results: Vec<FifMatch>,
+    pub selected: usize,
+    /// Última query realmente ejecutada (puede diferir del input si el
+    /// user siguió tipeando sin re-Enter).
+    pub last_query: String,
+    /// `true` cuando el popup modal está visible. La barra de resultados
+    /// se pinta independientemente de esto: sobrevive al cierre del popup.
+    pub dialog_open: bool,
+}
+
+impl Default for FifState {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl FifState {
+    pub fn new() -> Self {
+        Self {
+            input: TextInputState::new(),
+            replace: TextInputState::new(),
+            focus: FifFocus::Search,
+            results: Vec::new(),
+            selected: 0,
+            last_query: String::new(),
+            dialog_open: true,
+        }
+    }
+}
+
+/// Vocabulario interno. El host lo wrapea en su propio Msg.
+#[derive(Clone)]
+pub enum FifMsg {
+    /// El host detectó el atajo de apertura (o un comando). Lazy-init del
+    /// state lo hace el host; `apply` sólo marca `dialog_open = true`.
+    Open,
+    /// El user pidió cerrar el popup (Esc). Los resultados quedan en la
+    /// barra inferior.
+    CloseDialog,
+    /// Cerrar todo: el host debería tirar el `FifState` completo.
+    CloseAll,
+    /// Tecla rumbo al input.
+    KeyInput(KeyEvent),
+    /// Navegación dentro de la lista de resultados.
+    Nav(i32),
+    /// Enter: la primera vez ejecuta search; subsiguientes abren el
+    /// match seleccionado.
+    Submit,
+    /// Click en una fila de la barra inferior: selecciona y abre.
+    ActivateAt(usize),
+    /// Alterna el foco entre los inputs search ↔ replace (Tab).
+    ToggleFocus,
+    /// Reemplaza el texto matcheado por `replace.text()` en todos los
+    /// matches actuales. Idempotente: re-leer el archivo, sustituir
+    /// case-insensitive por la query, escribir. Vacía `results` para
+    /// forzar nueva búsqueda si el user quiere ver el estado posterior.
+    ReplaceAll,
+}
+
+/// Efecto solicitado al host. El módulo nunca toca el FS ni el resto del
+/// modelo de la app — devuelve el deseo, el host elige cómo lo aplica.
+#[derive(Debug, Clone)]
+pub enum FifAction {
+    None,
+    /// El host debería marcar `state.dialog_open = false` y dejar el
+    /// resto del state intacto (resultados visibles en la barra).
+    CloseDialog,
+    /// El host debería remover el state del modelo entero.
+    CloseAll,
+    /// Tras un Submit que ejecutó search.
+    Searched { matches: usize, elapsed: Duration, query: String },
+    /// El host debería abrir `path` y posicionar el caret en `(line, col)`.
+    /// El módulo NO se cierra automáticamente: el host decide si ocultar
+    /// el dialog tras abrir el match.
+    OpenAt { path: PathBuf, line: usize, col: usize },
+    /// Tras `ReplaceAll`: cuántos archivos tocados, cuántos matches
+    /// sustituidos, cuántos fallaron. El host debería refrescar buffers
+    /// abiertos (recargar de disco si no-dirty) y mostrar status.
+    Replaced {
+        files_changed: usize,
+        replacements: usize,
+        failures: usize,
+        query: String,
+        replacement: String,
+    },
+}
+
+/// Aplica un mensaje al estado y retorna el efecto que el host debe ejecutar.
+///
+/// `paths` es la lista canónica de archivos sobre la que buscar. El host
+/// la pasa por referencia; cuando Submit dispara una búsqueda, este
+/// vector se itera y se leen los archivos (skip binarios y >MAX_FILE_SIZE).
+pub fn apply(state: &mut FifState, msg: FifMsg, paths: &[PathBuf]) -> FifAction {
+    match msg {
+        FifMsg::Open => {
+            state.dialog_open = true;
+            FifAction::None
+        }
+        FifMsg::CloseDialog => FifAction::CloseDialog,
+        FifMsg::CloseAll => FifAction::CloseAll,
+        FifMsg::KeyInput(ev) => {
+            let _ = match state.focus {
+                FifFocus::Search => state.input.apply_key(&ev),
+                FifFocus::Replace => state.replace.apply_key(&ev),
+            };
+            FifAction::None
+        }
+        FifMsg::ToggleFocus => {
+            state.focus = match state.focus {
+                FifFocus::Search => FifFocus::Replace,
+                FifFocus::Replace => FifFocus::Search,
+            };
+            FifAction::None
+        }
+        FifMsg::ReplaceAll => {
+            let query = state.last_query.clone();
+            if query.is_empty() || state.results.is_empty() {
+                return FifAction::None;
+            }
+            let replacement = state.replace.text();
+            let (files_changed, replacements, failures) =
+                replace_all(paths, &state.results, &query, &replacement);
+            // Invalidamos resultados: las posiciones (line, col) ya no
+            // necesariamente apuntan al mismo texto. El user puede re-Enter.
+            state.results.clear();
+            state.selected = 0;
+            FifAction::Replaced {
+                files_changed,
+                replacements,
+                failures,
+                query,
+                replacement,
+            }
+        }
+        FifMsg::Nav(d) => {
+            let n = state.results.len() as i32;
+            if n > 0 {
+                state.selected = (state.selected as i32 + d).rem_euclid(n) as usize;
+            }
+            FifAction::None
+        }
+        FifMsg::Submit => {
+            let query = state.input.text();
+            let needs_search = query != state.last_query || state.results.is_empty();
+            if needs_search {
+                if query.len() < MIN_QUERY_LEN {
+                    return FifAction::None;
+                }
+                let started = std::time::Instant::now();
+                let results = search(paths, &query);
+                let elapsed = started.elapsed();
+                let n = results.len();
+                state.results = results;
+                state.selected = 0;
+                state.last_query = query.clone();
+                FifAction::Searched { matches: n, elapsed, query }
+            } else {
+                let Some(fm) = state.results.get(state.selected).cloned() else {
+                    return FifAction::None;
+                };
+                let Some(path) = paths.get(fm.file_idx).cloned() else {
+                    return FifAction::None;
+                };
+                FifAction::OpenAt { path, line: fm.line, col: fm.col }
+            }
+        }
+        FifMsg::ActivateAt(idx) => {
+            if idx >= state.results.len() {
+                return FifAction::None;
+            }
+            state.selected = idx;
+            let fm = state.results[idx].clone();
+            let Some(path) = paths.get(fm.file_idx).cloned() else {
+                return FifAction::None;
+            };
+            FifAction::OpenAt { path, line: fm.line, col: fm.col }
+        }
+    }
+}
+
+/// Routing de teclas cuando el dialog está abierto. Si el popup está
+/// cerrado, devuelve `None` y el host puede seguir routeando al editor.
+pub fn on_key(state: &FifState, event: &KeyEvent) -> Option<FifMsg> {
+    if !state.dialog_open {
+        return None;
+    }
+    if event.state != KeyState::Pressed {
+        return None;
+    }
+    Some(match &event.key {
+        Key::Named(NamedKey::Escape) => FifMsg::CloseDialog,
+        Key::Named(NamedKey::Enter) => FifMsg::Submit,
+        Key::Named(NamedKey::Tab) => FifMsg::ToggleFocus,
+        Key::Named(NamedKey::ArrowDown) => FifMsg::Nav(1),
+        Key::Named(NamedKey::ArrowUp) => FifMsg::Nav(-1),
+        _ => FifMsg::KeyInput(event.clone()),
+    })
+}
+
+/// Chequea si el evento es el atajo recomendado: **Ctrl+Shift+F**. El
+/// host puede ignorar esto y definir su propio binding.
+pub fn open_shortcut(event: &KeyEvent) -> bool {
+    event.state == KeyState::Pressed
+        && event.modifiers.ctrl
+        && event.modifiers.shift
+        && matches!(&event.key, Key::Character(s) if s.eq_ignore_ascii_case("f"))
+}
+
+/// Paleta visual. Construible desde un [`llimphi_theme::Theme`].
+#[derive(Debug, Clone)]
+pub struct FifPalette {
+    pub bg_panel: Color,
+    pub bg_header: Color,
+    pub bg_selected: Color,
+    pub fg_text: Color,
+    pub fg_muted: Color,
+    pub border: Color,
+    /// Theme cacheado para reusar en `TextInputPalette::from_theme`.
+    theme: llimphi_theme::Theme,
+}
+
+impl FifPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_panel: t.bg_panel,
+            bg_header: t.bg_panel_alt,
+            bg_selected: t.bg_selected,
+            fg_text: t.fg_text,
+            fg_muted: t.fg_muted,
+            border: t.border,
+            theme: t.clone(),
+        }
+    }
+}
+
+/// Popup modal compacto: header + input. Sin lista de resultados — esa
+/// vive en [`view_results_bar`]. El host lo pinta como overlay centrado.
+///
+/// El `View` devuelto tiene tamaño fijo ([`DIALOG_W`] × [`DIALOG_H`]). Si
+/// el host quiere centrarlo, debe envolverlo en un container con
+/// `JustifyContent::Center`/`AlignItems::Center` o usar el slot de overlay.
+pub fn view_dialog<HostMsg, F>(
+    state: &FifState,
+    palette: &FifPalette,
+    to_host: F,
+) -> View<HostMsg>
+where
+    HostMsg: Clone + 'static,
+    F: Fn(FifMsg) -> HostMsg + Copy + 'static,
+{
+    let dirty_query = state.input.text() != state.last_query;
+    let header = if state.last_query.is_empty() {
+        "find in files · Enter busca · Esc cierra".to_string()
+    } else if state.results.is_empty() {
+        format!("«{}» · sin matches · Esc cierra", state.last_query)
+    } else {
+        let staleness = if dirty_query { " · Enter re-busca" } else { "" };
+        format!(
+            "«{}» · {} matches · ↓↑ navega · Enter abre{staleness} · Esc cierra",
+            state.last_query,
+            state.results.len(),
+        )
+    };
+
+    let header_view = View::new(Style {
+        size: Size { width: percent(1.0_f32), height: length(20.0_f32) },
+        padding: Rect {
+            left: length(10.0_f32),
+            right: length(10.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_header)
+    .text_aligned(header, 10.0, palette.fg_muted, Alignment::Start);
+
+    let tp = TextInputPalette::from_theme(&palette.theme);
+    let search_focus = state.focus == FifFocus::Search;
+    let search_view = labelled_input(
+        "buscar",
+        &state.input,
+        "buscar en archivos…",
+        search_focus,
+        palette,
+        &tp,
+        to_host(FifMsg::Open),
+    );
+    let replace_view = labelled_input(
+        "reemplazar",
+        &state.replace,
+        "(vacío para borrar)",
+        !search_focus,
+        palette,
+        &tp,
+        to_host(FifMsg::Open),
+    );
+
+    let replace_btn = View::new(Style {
+        size: Size { width: length(118.0_f32), height: length(20.0_f32) },
+        padding: Rect {
+            left: length(6.0_f32),
+            right: length(6.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_header)
+    .radius(3.0)
+    .text_aligned(
+        "reemplazar todo".to_string(),
+        10.0,
+        palette.fg_muted,
+        Alignment::Center,
+    )
+    .on_click(to_host(FifMsg::ReplaceAll));
+
+    let hint = View::new(Style {
+        flex_grow: 1.0,
+        size: Size { width: percent(0.0_f32), height: length(20.0_f32) },
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .text_aligned("Tab alterna campos".to_string(), 9.0, palette.fg_muted, Alignment::Start);
+
+    let actions = View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size { width: percent(1.0_f32), height: length(20.0_f32) },
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .children(vec![hint, replace_btn]);
+
+    // Wrapper exterior: tamaño fijo del dialog + borde sutil.
+    let dialog = View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size { width: length(DIALOG_W), height: length(DIALOG_H) },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .radius(6.0)
+    .children(vec![header_view, search_view, replace_view, actions]);
+
+    // Container que centra el dialog horizontalmente — el host pone esto
+    // como overlay arriba del editor; un click en zona vacía no hace nada
+    // (no cerramos por click-outside, sería sorpresivo si el user está
+    // ojeando resultados en la barra).
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size { width: percent(1.0_f32), height: length(DIALOG_H + 16.0) },
+        padding: Rect {
+            left: length(0.0_f32),
+            right: length(0.0_f32),
+            top: length(12.0_f32),
+            bottom: length(4.0_f32),
+        },
+        justify_content: Some(JustifyContent::Center),
+        align_items: Some(AlignItems::Start),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(vec![dialog])
+}
+
+/// Barra inferior persistente con los matches. Filas clickeables (click
+/// → [`FifMsg::ActivateAt`]). El host la pinta como tool window al pie
+/// del editor, hermana del terminal/output (estilo JetBrains).
+///
+/// Si no hay resultados, devuelve una barra mínima con un mensaje — el
+/// host puede usar `state.results.is_empty()` para no renderizarla.
+pub fn view_results_bar<HostMsg, F>(
+    state: &FifState,
+    paths: &[PathBuf],
+    root: &Path,
+    palette: &FifPalette,
+    to_host: F,
+) -> View<HostMsg>
+where
+    HostMsg: Clone + 'static,
+    F: Fn(FifMsg) -> HostMsg + Copy + 'static,
+{
+    let header_text = if state.results.is_empty() {
+        format!("find · «{}» · sin matches", state.last_query)
+    } else {
+        format!(
+            "find · «{}» · {} / {} matches · click abre · Ctrl+Shift+F reabre",
+            state.last_query,
+            state.selected + 1,
+            state.results.len(),
+        )
+    };
+
+    let close_btn = View::new(Style {
+        size: Size { width: length(54.0_f32), height: length(18.0_f32) },
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_header)
+    .text_aligned("cerrar ✕".to_string(), 10.0, palette.fg_muted, Alignment::Center)
+    .on_click(to_host(FifMsg::CloseAll));
+
+    let header_label = View::new(Style {
+        flex_grow: 1.0,
+        size: Size { width: percent(0.0_f32), height: length(20.0_f32) },
+        padding: Rect {
+            left: length(10.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .text_aligned(header_text, 10.0, palette.fg_muted, Alignment::Start);
+
+    let header_bar = View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size { width: percent(1.0_f32), height: length(20.0_f32) },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_header)
+    .children(vec![header_label, close_btn]);
+
+    let visible_start = state
+        .selected
+        .saturating_sub(MAX_VISIBLE.saturating_sub(1));
+    let visible_end = (visible_start + MAX_VISIBLE).min(state.results.len());
+    let mut rows: Vec<View<HostMsg>> = Vec::with_capacity(MAX_VISIBLE);
+    for i in visible_start..visible_end {
+        let Some(fm) = state.results.get(i) else { continue };
+        let Some(path) = paths.get(fm.file_idx) else { continue };
+        let rel = relative_to(root, path);
+        let name = path.file_name().and_then(|s| s.to_str()).unwrap_or("?");
+        let dir = rel.strip_suffix(name).unwrap_or("").trim_end_matches('/');
+        let dir_label = if dir.is_empty() { String::new() } else { format!("  {dir}") };
+        let label = format!("{name}:{}{dir_label}    {}", fm.line + 1, fm.snippet);
+        let selected = i == state.selected;
+        let bg = if selected { palette.bg_selected } else { palette.bg_panel };
+        let fg = if selected { palette.fg_text } else { palette.fg_muted };
+        rows.push(
+            View::new(Style {
+                size: Size { width: percent(1.0_f32), height: length(ROW_H) },
+                padding: Rect {
+                    left: length(12.0_f32),
+                    right: length(8.0_f32),
+                    top: length(0.0_f32),
+                    bottom: length(0.0_f32),
+                },
+                align_items: Some(AlignItems::Center),
+                flex_shrink: 0.0,
+                ..Default::default()
+            })
+            .fill(bg)
+            .text_aligned(label, 11.0, fg, Alignment::Start)
+            .on_click(to_host(FifMsg::ActivateAt(i))),
+        );
+    }
+
+    let mut children: Vec<View<HostMsg>> = Vec::with_capacity(1 + rows.len());
+    children.push(header_bar);
+    children.extend(rows);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size { width: percent(1.0_f32), height: length(BAR_H) },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .children(children)
+}
+
+/// Búsqueda substring case-insensitive. Pública para tests / hosts que
+/// quieran disparar una búsqueda sin pasar por el state machine.
+pub fn search(paths: &[PathBuf], query: &str) -> Vec<FifMatch> {
+    let mut out: Vec<FifMatch> = Vec::new();
+    let q_lc = query.to_lowercase();
+    for (file_idx, path) in paths.iter().enumerate() {
+        if out.len() >= MAX_RESULTS {
+            break;
+        }
+        if let Ok(meta) = std::fs::metadata(path) {
+            if meta.len() > MAX_FILE_SIZE {
+                continue;
+            }
+        }
+        let Ok(content) = std::fs::read_to_string(path) else { continue };
+        for (line_idx, line) in content.lines().enumerate() {
+            if out.len() >= MAX_RESULTS {
+                break;
+            }
+            let line_lc = line.to_ascii_lowercase();
+            let Some(byte_off) = line_lc.find(&q_lc) else { continue };
+            let col = line[..byte_off.min(line.len())].chars().count();
+            let trimmed = line.trim_start();
+            let snippet = if trimmed.chars().count() <= SNIPPET_MAX_CHARS {
+                trimmed.to_string()
+            } else {
+                let cut: String = trimmed.chars().take(SNIPPET_MAX_CHARS - 1).collect();
+                format!("{cut}…")
+            };
+            out.push(FifMatch { file_idx, line: line_idx, col, snippet });
+        }
+    }
+    out
+}
+
+/// Reemplazo case-insensitive sobre los archivos involucrados en
+/// `results`. Devuelve `(files_changed, replacements, failures)`.
+/// Lee cada archivo una sola vez, sustituye todas las apariciones de
+/// `query` por `replacement` (case-insensitive, preservando el resto), y
+/// escribe sólo si hubo cambios. No toca buffers en memoria del host —
+/// el host es responsable de recargar tabs si quiere ver los cambios.
+pub fn replace_all(
+    paths: &[PathBuf],
+    results: &[FifMatch],
+    query: &str,
+    replacement: &str,
+) -> (usize, usize, usize) {
+    if query.is_empty() {
+        return (0, 0, 0);
+    }
+    let mut touched: std::collections::BTreeSet<usize> =
+        std::collections::BTreeSet::new();
+    for fm in results {
+        touched.insert(fm.file_idx);
+    }
+    let mut files_changed = 0usize;
+    let mut total_replacements = 0usize;
+    let mut failures = 0usize;
+    let q_lc = query.to_lowercase();
+    for idx in touched {
+        let Some(path) = paths.get(idx) else { continue };
+        let Ok(content) = std::fs::read_to_string(path) else {
+            failures += 1;
+            continue;
+        };
+        let (new_content, n) = ci_replace_all(&content, query, &q_lc, replacement);
+        if n == 0 {
+            continue;
+        }
+        if std::fs::write(path, new_content).is_err() {
+            failures += 1;
+            continue;
+        }
+        files_changed += 1;
+        total_replacements += n;
+    }
+    (files_changed, total_replacements, failures)
+}
+
+/// Reemplazo case-insensitive preservando los bytes no-matchados.
+fn ci_replace_all(haystack: &str, _needle: &str, needle_lc: &str, repl: &str) -> (String, usize) {
+    let hay_lc = haystack.to_lowercase();
+    let mut out = String::with_capacity(haystack.len());
+    let mut count = 0usize;
+    let mut i = 0usize;
+    while i <= hay_lc.len() {
+        if let Some(pos) = hay_lc[i..].find(needle_lc) {
+            let abs = i + pos;
+            out.push_str(&haystack[i..abs]);
+            out.push_str(repl);
+            i = abs + needle_lc.len();
+            count += 1;
+        } else {
+            out.push_str(&haystack[i..]);
+            break;
+        }
+    }
+    (out, count)
+}
+
+// ---------------------------------------------------------------------
+// Helpers internos
+// ---------------------------------------------------------------------
+
+/// Pinta un input con etiqueta a la izquierda; cuando `focus` es true,
+/// el fondo se realza para que el user vea dónde está tipeando.
+fn labelled_input<HostMsg>(
+    label: &str,
+    state: &TextInputState,
+    placeholder: &str,
+    focus: bool,
+    palette: &FifPalette,
+    tp: &TextInputPalette,
+    fallback_msg: HostMsg,
+) -> View<HostMsg>
+where
+    HostMsg: Clone + 'static,
+{
+    let bg = if focus { palette.bg_selected } else { palette.bg_panel };
+    let label_view = View::new(Style {
+        size: Size { width: length(82.0_f32), height: length(28.0_f32) },
+        padding: Rect {
+            left: length(10.0_f32),
+            right: length(4.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .text_aligned(label.to_string(), 10.0, palette.fg_muted, Alignment::Start);
+
+    let input_view = View::new(Style {
+        flex_grow: 1.0,
+        size: Size { width: percent(0.0_f32), height: length(28.0_f32) },
+        padding: Rect {
+            left: length(4.0_f32),
+            right: length(10.0_f32),
+            top: length(2.0_f32),
+            bottom: length(2.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![text_input_view(
+        state,
+        placeholder,
+        focus,
+        tp,
+        fallback_msg,
+    )]);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size { width: percent(1.0_f32), height: length(28.0_f32) },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(bg)
+    .children(vec![label_view, input_view])
+}
+
+fn relative_to(root: &Path, path: &Path) -> String {
+    path.strip_prefix(root)
+        .map(|p| p.display().to_string())
+        .unwrap_or_else(|_| path.display().to_string())
+}
diff --git a/modules/file-picker/Cargo.toml b/modules/file-picker/Cargo.toml
new file mode 100644
index 0000000..88307c1
--- /dev/null
+++ b/modules/file-picker/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-module-file-picker"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-module-file-picker — fuzzy file picker (estilo Ctrl+P de VS Code). Módulo Llimphi reutilizable: state + Msg + Action + apply/on_key/view sobre un slice de paths que provee el host."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-text-input = { workspace = true }
diff --git a/modules/file-picker/LEEME.md b/modules/file-picker/LEEME.md
new file mode 100644
index 0000000..3480bee
--- /dev/null
+++ b/modules/file-picker/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-module-file-picker
+
+> Picker de archivos de [llimphi](../../README.md).
+
+Fuzzy-finder de paths. Modal sobre la app. Devuelve `PathBuf` por `Msg::FilePicked`. Recientes priorizados.
diff --git a/modules/file-picker/README.md b/modules/file-picker/README.md
new file mode 100644
index 0000000..e6a192f
--- /dev/null
+++ b/modules/file-picker/README.md
@@ -0,0 +1,5 @@
+# llimphi-module-file-picker
+
+> File picker of [llimphi](../../README.md).
+
+Path fuzzy-finder. Modal over the app. Returns `PathBuf` via `Msg::FilePicked`. Recents prioritized.
diff --git a/modules/file-picker/src/lib.rs b/modules/file-picker/src/lib.rs
new file mode 100644
index 0000000..2109da4
--- /dev/null
+++ b/modules/file-picker/src/lib.rs
@@ -0,0 +1,382 @@
+//! `llimphi-module-file-picker` — fuzzy file picker reutilizable.
+//!
+//! Equivalente a Ctrl+P de VS Code / "Go to file" de JetBrains: el host
+//! mantiene una lista de paths candidatos (típicamente walk del workspace
+//! cacheado al arrancar) y el módulo presenta un overlay con input +
+//! resultados rankeados. Cuando el user pica uno, el módulo emite
+//! [`PickerAction::Open`] y el host decide cómo abrir (tab nuevo, split,
+//! etc.).
+//!
+//! Sigue el contrato Llimphi de [`docs/MODULES.md`]:
+//! `State + Msg + Action + apply/on_key/open_shortcut/view + Palette`.
+//!
+//! ## Cómo lo enchufa una app
+//!
+//! ```ignore
+//! use llimphi_module_file_picker::{self as picker, PickerAction, PickerMsg,
+//!     PickerPalette, PickerState};
+//!
+//! struct Model { all_files: Vec<PathBuf>, picker: Option<PickerState>, … }
+//! enum Msg { Picker(PickerMsg), … }
+//!
+//! // update:
+//! Msg::Picker(pm) => {
+//!     let mut m = model;
+//!     if matches!(pm, PickerMsg::Open) && m.picker.is_none() {
+//!         m.picker = Some(PickerState::new(&m.all_files, &m.root));
+//!         return m;
+//!     }
+//!     let action = match m.picker.as_mut() {
+//!         Some(s) => picker::apply(s, pm, &m.all_files, &m.root),
+//!         None => return m,
+//!     };
+//!     match action {
+//!         PickerAction::Close => m.picker = None,
+//!         PickerAction::Open(path) => {
+//!             m.picker = None;
+//!             m = open_path_in_app(m, path);
+//!         }
+//!         PickerAction::None => {}
+//!     }
+//!     m
+//! }
+//!
+//! // on_key:
+//! if let Some(state) = model.picker.as_ref() {
+//!     if let Some(pm) = picker::on_key(state, event) {
+//!         return Some(Msg::Picker(pm));
+//!     }
+//! }
+//! if picker::open_shortcut(event) {
+//!     return Some(Msg::Picker(PickerMsg::Open));
+//! }
+//!
+//! // view:
+//! if let Some(state) = model.picker.as_ref() {
+//!     let panel = picker::view(
+//!         state, &model.all_files, &model.root,
+//!         &PickerPalette::from_theme(&theme),
+//!         Msg::Picker,
+//!     );
+//!     children.push(panel);
+//! }
+//! ```
+
+#![forbid(unsafe_code)]
+
+use std::path::{Path, PathBuf};
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{Key, KeyEvent, KeyState, NamedKey, View};
+use llimphi_widget_text_input::{text_input_view, TextInputPalette, TextInputState};
+
+/// Capabilities que este módulo aporta al host. El host (cuando construye
+/// su `card_core::Card`) puede agregar esto a `provides` para anunciar
+/// vía broker que ofrece file-picker al ecosistema.
+pub const CAPABILITIES: &[&str] = &["editor.file-picker"];
+
+/// Máximo de resultados rankeados que entran al popup.
+pub const MAX_RESULTS: usize = 200;
+
+const BAR_H: f32 = 220.0;
+const ROW_H: f32 = 20.0;
+const MAX_VISIBLE: usize = 9;
+
+/// Estado interno. Los `results` son índices al slice de paths que pasa
+/// el host: el módulo no copia paths, sólo guarda índices.
+pub struct PickerState {
+    pub input: TextInputState,
+    pub results: Vec<usize>,
+    pub selected: usize,
+}
+
+impl Default for PickerState {
+    fn default() -> Self {
+        Self::new_empty()
+    }
+}
+
+impl PickerState {
+    /// Crea un picker vacío. Si querés pre-filtrar con los paths que ya
+    /// tenés, llamá [`PickerState::new`] en su lugar.
+    pub fn new_empty() -> Self {
+        Self {
+            input: TextInputState::new(),
+            results: Vec::new(),
+            selected: 0,
+        }
+    }
+
+    /// Crea un picker con todos los `paths` como resultados iniciales
+    /// (sin filtrar). Conveniente para el ack visual del Ctrl+P recién
+    /// disparado.
+    pub fn new(paths: &[PathBuf], root: &Path) -> Self {
+        let mut s = Self::new_empty();
+        refilter(&mut s, paths, root);
+        s
+    }
+}
+
+/// Vocabulario interno. El host lo wrapea en su Msg.
+#[derive(Clone)]
+pub enum PickerMsg {
+    /// Símbolo conveniente para que el host dispatche al detectar el
+    /// shortcut. El módulo no maneja Open él mismo — la creación del
+    /// state corre por cuenta del host (porque típicamente quiere pasar
+    /// la lista canónica de paths).
+    Open,
+    Close,
+    KeyInput(KeyEvent),
+    Nav(i32),
+    /// Enter: abre el match seleccionado.
+    Apply,
+}
+
+/// Efecto solicitado al host.
+#[derive(Debug, Clone)]
+pub enum PickerAction {
+    None,
+    /// El host debería remover el state del modelo.
+    Close,
+    /// El host debería abrir este `path`. El módulo NO se cierra
+    /// automáticamente — el host decide si ocultar el picker tras abrir.
+    Open(PathBuf),
+}
+
+/// Aplica un mensaje al estado.
+pub fn apply(
+    state: &mut PickerState,
+    msg: PickerMsg,
+    paths: &[PathBuf],
+    root: &Path,
+) -> PickerAction {
+    match msg {
+        PickerMsg::Open => PickerAction::None,
+        PickerMsg::Close => PickerAction::Close,
+        PickerMsg::KeyInput(ev) => {
+            state.input.apply_key(&ev);
+            refilter(state, paths, root);
+            PickerAction::None
+        }
+        PickerMsg::Nav(d) => {
+            let n = state.results.len() as i32;
+            if n > 0 {
+                state.selected = (state.selected as i32 + d).rem_euclid(n) as usize;
+            }
+            PickerAction::None
+        }
+        PickerMsg::Apply => {
+            let Some(&file_idx) = state.results.get(state.selected) else {
+                return PickerAction::None;
+            };
+            let Some(path) = paths.get(file_idx).cloned() else {
+                return PickerAction::None;
+            };
+            PickerAction::Open(path)
+        }
+    }
+}
+
+/// Routing de teclas cuando el panel está abierto.
+pub fn on_key(_state: &PickerState, event: &KeyEvent) -> Option<PickerMsg> {
+    if event.state != KeyState::Pressed {
+        return None;
+    }
+    Some(match &event.key {
+        Key::Named(NamedKey::Escape) => PickerMsg::Close,
+        Key::Named(NamedKey::Enter) => PickerMsg::Apply,
+        Key::Named(NamedKey::ArrowDown) => PickerMsg::Nav(1),
+        Key::Named(NamedKey::ArrowUp) => PickerMsg::Nav(-1),
+        _ => PickerMsg::KeyInput(event.clone()),
+    })
+}
+
+/// Chequea si el evento es el atajo recomendado: **Ctrl+P**.
+pub fn open_shortcut(event: &KeyEvent) -> bool {
+    event.state == KeyState::Pressed
+        && event.modifiers.ctrl
+        && !event.modifiers.shift
+        && matches!(&event.key, Key::Character(s) if s.eq_ignore_ascii_case("p"))
+}
+
+/// Recalcula `state.results` según el query del input. Match case-insensitive
+/// sobre el path relativo. Score penaliza paths largos y premia hits en el
+/// basename. Query vacío = todos los paths ordenados por longitud asc.
+/// Cap: [`MAX_RESULTS`].
+pub fn refilter(state: &mut PickerState, paths: &[PathBuf], root: &Path) {
+    let q = state.input.text();
+    let q_lc = q.to_lowercase();
+    let mut scored: Vec<(i64, usize)> = Vec::new();
+    for (i, path) in paths.iter().enumerate() {
+        let rel = relative_to(root, path);
+        if q_lc.is_empty() {
+            scored.push((rel.len() as i64, i));
+            continue;
+        }
+        let rel_lc = rel.to_lowercase();
+        let Some(rel_hit) = rel_lc.find(&q_lc) else { continue };
+        let name = path
+            .file_name()
+            .and_then(|s| s.to_str())
+            .map(|s| s.to_lowercase())
+            .unwrap_or_default();
+        let name_hit = name.find(&q_lc);
+        let score = match name_hit {
+            Some(pos) => pos as i64 * 4 + rel.len() as i64,
+            None => 10_000 + rel_hit as i64 + rel.len() as i64,
+        };
+        scored.push((score, i));
+    }
+    scored.sort_by_key(|(s, _)| *s);
+    scored.truncate(MAX_RESULTS);
+    state.results = scored.into_iter().map(|(_, i)| i).collect();
+    state.selected = 0;
+}
+
+/// Paleta visual.
+#[derive(Debug, Clone)]
+pub struct PickerPalette {
+    pub bg_panel: Color,
+    pub bg_header: Color,
+    pub bg_selected: Color,
+    pub fg_text: Color,
+    pub fg_muted: Color,
+    theme: llimphi_theme::Theme,
+}
+
+impl PickerPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_panel: t.bg_panel,
+            bg_header: t.bg_panel_alt,
+            bg_selected: t.bg_selected,
+            fg_text: t.fg_text,
+            fg_muted: t.fg_muted,
+            theme: t.clone(),
+        }
+    }
+}
+
+/// Render del panel. `to_host` mapea cada `PickerMsg` interno al `Msg`
+/// de la app.
+pub fn view<HostMsg, F>(
+    state: &PickerState,
+    paths: &[PathBuf],
+    root: &Path,
+    palette: &PickerPalette,
+    to_host: F,
+) -> View<HostMsg>
+where
+    HostMsg: Clone + 'static,
+    F: Fn(PickerMsg) -> HostMsg + Copy + 'static,
+{
+    let header = if state.results.is_empty() {
+        format!("file picker · sin matches · {} archivos · Esc cierra", paths.len())
+    } else {
+        format!(
+            "file picker · {} / {} · ↓↑ navega · Enter abre · Esc cierra",
+            state.selected + 1,
+            state.results.len(),
+        )
+    };
+
+    let header_view = View::new(Style {
+        size: Size { width: percent(1.0_f32), height: length(18.0_f32) },
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_header)
+    .text_aligned(header, 10.0, palette.fg_muted, Alignment::Start);
+
+    let tp = TextInputPalette::from_theme(&palette.theme);
+    let input_view = View::new(Style {
+        size: Size { width: percent(1.0_f32), height: length(26.0_f32) },
+        padding: Rect {
+            left: length(6.0_f32),
+            right: length(6.0_f32),
+            top: length(2.0_f32),
+            bottom: length(2.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .children(vec![text_input_view(
+        &state.input,
+        "filtro: nombre o ruta…",
+        true,
+        &tp,
+        to_host(PickerMsg::Open),
+    )]);
+
+    let visible_start = state.selected.saturating_sub(MAX_VISIBLE.saturating_sub(1));
+    let visible_end = (visible_start + MAX_VISIBLE).min(state.results.len());
+    let mut rows: Vec<View<HostMsg>> = Vec::with_capacity(MAX_VISIBLE);
+    for i in visible_start..visible_end {
+        let Some(&file_idx) = state.results.get(i) else { continue };
+        let Some(path) = paths.get(file_idx) else { continue };
+        let rel = relative_to(root, path);
+        let name = path.file_name().and_then(|s| s.to_str()).unwrap_or("?");
+        let dir = rel.strip_suffix(name).unwrap_or("");
+        let label = if dir.is_empty() {
+            name.to_string()
+        } else {
+            format!("{name}    {}", dir.trim_end_matches('/'))
+        };
+        let selected = i == state.selected;
+        let bg = if selected { palette.bg_selected } else { palette.bg_panel };
+        let fg = if selected { palette.fg_text } else { palette.fg_muted };
+        rows.push(
+            View::new(Style {
+                size: Size { width: percent(1.0_f32), height: length(ROW_H) },
+                padding: Rect {
+                    left: length(10.0_f32),
+                    right: length(8.0_f32),
+                    top: length(0.0_f32),
+                    bottom: length(0.0_f32),
+                },
+                align_items: Some(AlignItems::Center),
+                flex_shrink: 0.0,
+                ..Default::default()
+            })
+            .fill(bg)
+            .text_aligned(label, 11.0, fg, Alignment::Start),
+        );
+    }
+
+    let mut children: Vec<View<HostMsg>> = Vec::with_capacity(2 + rows.len());
+    children.push(header_view);
+    children.push(input_view);
+    children.extend(rows);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size { width: percent(1.0_f32), height: length(BAR_H) },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .children(children)
+}
+
+// ---------------------------------------------------------------------
+// Helpers
+// ---------------------------------------------------------------------
+
+fn relative_to(root: &Path, path: &Path) -> String {
+    path.strip_prefix(root)
+        .map(|p| p.display().to_string())
+        .unwrap_or_else(|_| path.display().to_string())
+}
diff --git a/modules/mini-map/Cargo.toml b/modules/mini-map/Cargo.toml
new file mode 100644
index 0000000..1ce231f
--- /dev/null
+++ b/modules/mini-map/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "llimphi-module-mini-map"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-module-mini-map — overlay minimap del buffer activo. Modulo Llimphi: el host le pasa un snapshot del buffer + viewport + caret, el modulo pinta un panel vertical con un slab por linea (ancho aprox chars), resalta el viewport visible y emite Jump(line) al click. Estilo VS Code/Sublime."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+
+[dev-dependencies]
diff --git a/modules/mini-map/LEEME.md b/modules/mini-map/LEEME.md
new file mode 100644
index 0000000..5324a2f
--- /dev/null
+++ b/modules/mini-map/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-module-mini-map
+
+> Mini-mapa del editor de [llimphi](../../README.md).
+
+Overview a la derecha del [`text-editor`](../../widgets/text-editor/README.md): renderizado escalado del archivo con highlight de la posición actual. Click salta a esa porción.
diff --git a/modules/mini-map/README.md b/modules/mini-map/README.md
new file mode 100644
index 0000000..1643a3e
--- /dev/null
+++ b/modules/mini-map/README.md
@@ -0,0 +1,5 @@
+# llimphi-module-mini-map
+
+> Editor mini-map of [llimphi](../../README.md).
+
+Right-side overview of [`text-editor`](../../widgets/text-editor/README.md): scaled rendering of the file with highlight of current position. Click jumps to that section.
diff --git a/modules/mini-map/src/lib.rs b/modules/mini-map/src/lib.rs
new file mode 100644
index 0000000..3f8c1c9
--- /dev/null
+++ b/modules/mini-map/src/lib.rs
@@ -0,0 +1,274 @@
+//! `llimphi-module-mini-map` — minimap del buffer activo.
+//!
+//! Equivalente al "Minimap" de VS Code / "thumbnail" de Sublime: un
+//! panel angosto pegado al editor que pinta una linea horizontal por
+//! cada linea del buffer (ancho ~= len_chars, cap a `usable_w`),
+//! resalta el viewport visible como rect translucido y marca el caret.
+//! Click sobre el minimap salta esa linea al editor.
+//!
+//! El modulo es agnostico del editor: el host pasa un slice con la
+//! cantidad de chars por linea, el rango visible y la linea del
+//! caret. No depende de `llimphi-widget-text-editor` — cualquier
+//! buffer (rope, vec<String>, archivo memmaped) sirve.
+//!
+//! Sigue el contrato Llimphi de `docs/MODULES.md`:
+//! `State + Msg + Action + apply/on_key/open_shortcut/view + Palette`.
+
+#![forbid(unsafe_code)]
+
+use std::sync::Arc;
+
+use llimphi_ui::llimphi_layout::taffy::prelude::{length, percent, FlexDirection, Size, Style};
+use llimphi_ui::llimphi_raster::kurbo::{Affine, Rect as KRect};
+use llimphi_ui::llimphi_raster::peniko::{Color, Fill};
+use llimphi_ui::{Key, KeyEvent, KeyState, View};
+
+/// Capabilities que aporta este modulo al host.
+pub const CAPABILITIES: &[&str] = &["editor.mini-map"];
+
+/// Ancho del panel en pixeles (estilo VS Code).
+pub const PANEL_W: f32 = 120.0;
+/// Altura maxima por linea del buffer dentro del minimap (cap).
+pub const LINE_PX: f32 = 2.0;
+/// Escala chars->pixels para el ancho de cada slab. ~75 chars caben
+/// completos en `PANEL_W - PAD * 2`; lo demas se trunca.
+pub const CHAR_PX: f32 = 1.4;
+/// Padding lateral del panel (los slabs no tocan los bordes).
+pub const PAD: f32 = 6.0;
+
+/// Estado interno. Hoy efectivamente vacio — la informacion del buffer
+/// la pasa el host en cada frame via [`view`] — pero existe como
+/// `Option<MiniMapState>` en el host para representar abierto/cerrado
+/// y para futuras extensiones (scrubbing, fold-aware, syntax per slab).
+#[derive(Debug, Default, Clone)]
+pub struct MiniMapState {
+    /// Reservado para drag-scrub: la y inicial en pixeles dentro del
+    /// panel cuando el usuario empieza a arrastrar. `None` = sin drag
+    /// activo. Hoy no se consume (click es suficiente); declarado para
+    /// que el contrato del state no cambie cuando se agregue.
+    pub drag_anchor_y: Option<f32>,
+}
+
+impl MiniMapState {
+    pub fn new() -> Self {
+        Self::default()
+    }
+}
+
+/// Vocabulario interno. El host lo wrapea en su Msg.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum MiniMapMsg {
+    /// Convencional: el host abre el panel guardando un `MiniMapState`
+    /// en el modelo. El modulo no construye state global.
+    Open,
+    Close,
+    /// El usuario clickeo o arrastro: salta a la linea indicada.
+    Jump(usize),
+}
+
+/// Efecto solicitado al host.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum MiniMapAction {
+    None,
+    /// El host deberia remover el state del modelo.
+    Close,
+    /// El host deberia centrar el viewport en esta linea del buffer
+    /// activo. El modulo NO se cierra — el minimap es persistente.
+    JumpTo(usize),
+}
+
+/// Snapshot del buffer que el host pasa en cada frame. El modulo no
+/// copia, solo lee. La cantidad de chars por linea es lo unico que
+/// necesita para dibujar; viewport + caret se overlayean encima.
+pub struct Snapshot<'a> {
+    /// `lines[i]` = numero de chars (no bytes) en la linea `i`.
+    pub lines: &'a [usize],
+    /// Rango visible en el editor: `[start, end)`.
+    pub viewport_start: usize,
+    pub viewport_end: usize,
+    /// Linea del caret (0-based). Se pinta como marker accent.
+    pub caret_line: usize,
+}
+
+/// Aplica un mensaje al estado.
+pub fn apply(state: &mut MiniMapState, msg: MiniMapMsg) -> MiniMapAction {
+    match msg {
+        MiniMapMsg::Open => MiniMapAction::None,
+        MiniMapMsg::Close => MiniMapAction::Close,
+        MiniMapMsg::Jump(line) => {
+            state.drag_anchor_y = None;
+            MiniMapAction::JumpTo(line)
+        }
+    }
+}
+
+/// Routing de teclas. El minimap NO captura teclas (es un viewer
+/// pasivo). Devolvemos `None`; el host sigue su routing normal.
+pub fn on_key(_state: &MiniMapState, _event: &KeyEvent) -> Option<MiniMapMsg> {
+    None
+}
+
+/// Atajo recomendado: **Ctrl+Shift+M** (mnemonic M = Minimap).
+pub fn open_shortcut(event: &KeyEvent) -> bool {
+    event.state == KeyState::Pressed
+        && event.modifiers.ctrl
+        && event.modifiers.shift
+        && matches!(&event.key, Key::Character(s) if s.eq_ignore_ascii_case("m"))
+}
+
+/// Convierte una posicion-y dentro del panel a indice de linea. La
+/// conversion es proporcional al total de lineas; clamping en ambos
+/// extremos.
+pub fn y_to_line(y: f32, panel_h: f32, total_lines: usize) -> usize {
+    if total_lines == 0 || panel_h <= 0.0 {
+        return 0;
+    }
+    let t = (y / panel_h).clamp(0.0, 1.0);
+    let line = (t * total_lines as f32) as usize;
+    line.min(total_lines.saturating_sub(1))
+}
+
+/// Paleta visual derivable del theme.
+#[derive(Debug, Clone)]
+pub struct MiniMapPalette {
+    /// Fondo del panel del minimap.
+    pub bg_panel: Color,
+    /// Color de los slabs (uno por linea de buffer).
+    pub fg_slab: Color,
+    /// Color del rect translucido que marca el viewport visible.
+    pub bg_viewport: Color,
+    /// Borde del rect del viewport.
+    pub border_viewport: Color,
+    /// Color del marker del caret.
+    pub fg_caret: Color,
+}
+
+impl MiniMapPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_panel: t.bg_panel_alt,
+            fg_slab: t.fg_muted,
+            bg_viewport: with_alpha(t.bg_selected, 0.35),
+            border_viewport: t.border_focus,
+            fg_caret: t.accent,
+        }
+    }
+}
+
+fn with_alpha(c: Color, alpha: f32) -> Color {
+    let rgba = c.to_rgba8();
+    let a = (alpha.clamp(0.0, 1.0) * 255.0) as u8;
+    Color::from_rgba8(rgba.r, rgba.g, rgba.b, a)
+}
+
+/// Render del panel. `to_host` mapea cada `MiniMapMsg` al `Msg` de la app.
+/// `snapshot` es la vista del buffer en este frame (sin copia).
+///
+/// Layout: columna fija de `PANEL_W` px que ocupa todo el alto del
+/// contenedor padre. El host la mete en el `Row` del editor
+/// (tipicamente al final, al estilo VS Code).
+pub fn view<HostMsg, F>(
+    _state: &MiniMapState,
+    snapshot: &Snapshot,
+    palette: &MiniMapPalette,
+    to_host: F,
+) -> View<HostMsg>
+where
+    HostMsg: Clone + 'static,
+    F: Fn(MiniMapMsg) -> HostMsg + Copy + Send + Sync + 'static,
+{
+    // Capturamos por valor porque el painter es Arc<dyn Fn>: 'static + Send + Sync.
+    let lines: Vec<usize> = snapshot.lines.to_vec();
+    let viewport_start = snapshot.viewport_start;
+    let viewport_end = snapshot.viewport_end;
+    let caret_line = snapshot.caret_line;
+    let pal = palette.clone();
+
+    let total_lines = lines.len();
+    let click_host = to_host;
+    let on_click: Arc<dyn Fn(f32, f32, f32, f32) -> Option<HostMsg> + Send + Sync> = Arc::new(move |_x: f32, y: f32, _w: f32, h: f32| {
+        let line = y_to_line(y, h, total_lines);
+        Some(click_host(MiniMapMsg::Jump(line)))
+    });
+
+    let mut view = View::new(Style {
+        size: Size { width: length(PANEL_W), height: percent(1.0_f32) },
+        flex_shrink: 0.0,
+        flex_direction: FlexDirection::Column,
+        ..Default::default()
+    })
+    .fill(pal.bg_panel)
+    .clip(true)
+    .paint_with(move |scene, _ts, rect| {
+        if rect.w <= 0.0 || rect.h <= 0.0 || lines.is_empty() {
+            return;
+        }
+        let n = lines.len() as f32;
+        let line_h = (rect.h / n).min(LINE_PX);
+        let usable_w = (rect.w - PAD * 2.0).max(1.0);
+
+        // 1) Viewport overlay debajo de los slabs.
+        if viewport_end > viewport_start {
+            let y0 = rect.y + (viewport_start as f32 / n) * rect.h;
+            let y1 = rect.y + (viewport_end as f32 / n) * rect.h;
+            let vp = KRect::new(
+                rect.x as f64,
+                y0 as f64,
+                (rect.x + rect.w) as f64,
+                y1.max(y0 + 2.0) as f64,
+            );
+            scene.fill(Fill::NonZero, Affine::IDENTITY, pal.bg_viewport, None, &vp);
+        }
+
+        // 2) Slabs: uno por linea de buffer.
+        for (i, &chars) in lines.iter().enumerate() {
+            if chars == 0 {
+                continue;
+            }
+            let w = (chars as f32 * CHAR_PX).min(usable_w);
+            let y = rect.y + (i as f32 / n) * rect.h;
+            let slab_h = line_h.max(1.0);
+            let r = KRect::new(
+                (rect.x + PAD) as f64,
+                y as f64,
+                (rect.x + PAD + w) as f64,
+                (y + slab_h) as f64,
+            );
+            scene.fill(Fill::NonZero, Affine::IDENTITY, pal.fg_slab, None, &r);
+        }
+
+        // 3) Borde del viewport encima de los slabs.
+        if viewport_end > viewport_start {
+            let y0 = rect.y + (viewport_start as f32 / n) * rect.h;
+            let y1 = (rect.y + (viewport_end as f32 / n) * rect.h).max(y0 + 2.0);
+            let top = KRect::new(
+                rect.x as f64,
+                y0 as f64,
+                (rect.x + rect.w) as f64,
+                (y0 + 1.0) as f64,
+            );
+            let bot = KRect::new(
+                rect.x as f64,
+                (y1 - 1.0) as f64,
+                (rect.x + rect.w) as f64,
+                y1 as f64,
+            );
+            scene.fill(Fill::NonZero, Affine::IDENTITY, pal.border_viewport, None, &top);
+            scene.fill(Fill::NonZero, Affine::IDENTITY, pal.border_viewport, None, &bot);
+        }
+
+        // 4) Marker del caret: barra horizontal accent.
+        if caret_line < lines.len() {
+            let y = rect.y + (caret_line as f32 / n) * rect.h;
+            let r = KRect::new(
+                rect.x as f64,
+                y as f64,
+                (rect.x + rect.w) as f64,
+                (y + 2.0) as f64,
+            );
+            scene.fill(Fill::NonZero, Affine::IDENTITY, pal.fg_caret, None, &r);
+        }
+    });
+    view.on_click_at = Some(on_click);
+    view
+}
diff --git a/modules/mini-map/tests/smoke.rs b/modules/mini-map/tests/smoke.rs
new file mode 100644
index 0000000..bb9259c
--- /dev/null
+++ b/modules/mini-map/tests/smoke.rs
@@ -0,0 +1,63 @@
+//! Smoke tests del minimap. Sin backend grafico — solo `apply`,
+//! `on_key`, `open_shortcut` y la conversion y->line.
+
+use llimphi_module_mini_map::{
+    self as minimap, MiniMapAction, MiniMapMsg, MiniMapState,
+};
+use llimphi_ui::{Key, KeyEvent, KeyState, Modifiers};
+
+fn key_with(ctrl: bool, shift: bool, ch: &str) -> KeyEvent {
+    KeyEvent {
+        key: Key::Character(ch.into()),
+        state: KeyState::Pressed,
+        text: Some(ch.into()),
+        modifiers: Modifiers { ctrl, shift, ..Modifiers::default() },
+        repeat: false,
+    }
+}
+
+#[test]
+fn open_shortcut_es_ctrl_shift_m() {
+    assert!(minimap::open_shortcut(&key_with(true, true, "m")));
+    assert!(minimap::open_shortcut(&key_with(true, true, "M")));
+    assert!(!minimap::open_shortcut(&key_with(true, false, "m")));
+    assert!(!minimap::open_shortcut(&key_with(false, true, "m")));
+}
+
+#[test]
+fn jump_emite_jumpto() {
+    let mut s = MiniMapState::new();
+    let action = minimap::apply(&mut s, MiniMapMsg::Jump(42));
+    assert_eq!(action, MiniMapAction::JumpTo(42));
+}
+
+#[test]
+fn close_emite_close() {
+    let mut s = MiniMapState::new();
+    let action = minimap::apply(&mut s, MiniMapMsg::Close);
+    assert_eq!(action, MiniMapAction::Close);
+}
+
+#[test]
+fn y_to_line_proporcional() {
+    // 100 lineas, panel de 200 px → cada linea ocupa 2 px.
+    assert_eq!(minimap::y_to_line(0.0, 200.0, 100), 0);
+    assert_eq!(minimap::y_to_line(100.0, 200.0, 100), 50);
+    assert_eq!(minimap::y_to_line(200.0, 200.0, 100), 99);
+    // Clamping fuera de rango.
+    assert_eq!(minimap::y_to_line(-50.0, 200.0, 100), 0);
+    assert_eq!(minimap::y_to_line(500.0, 200.0, 100), 99);
+}
+
+#[test]
+fn y_to_line_buffer_vacio_no_paniquea() {
+    assert_eq!(minimap::y_to_line(0.0, 100.0, 0), 0);
+    assert_eq!(minimap::y_to_line(50.0, 100.0, 0), 0);
+}
+
+#[test]
+fn on_key_es_pasivo() {
+    let s = MiniMapState::new();
+    let ev = key_with(false, false, "a");
+    assert!(minimap::on_key(&s, &ev).is_none());
+}
diff --git a/modules/plugin-host/Cargo.toml b/modules/plugin-host/Cargo.toml
new file mode 100644
index 0000000..45ba6f8
--- /dev/null
+++ b/modules/plugin-host/Cargo.toml
@@ -0,0 +1,21 @@
+[package]
+name = "llimphi-plugin-host"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-plugin-host — runtime de plugins WASM (Tier 2) para apps Llimphi. Carga .wasm + manifest.toml, aplica sandbox por card_core::Permissions, e invoca capabilities devolviendo PluginAction."
+
+[dependencies]
+card-core = { path = "../../../../shared/card/card-core" }
+wasmi = { workspace = true }
+serde = { workspace = true }
+toml = { workspace = true }
+thiserror = { workspace = true }
+tracing = { workspace = true }
+
+[dev-dependencies]
+# wat sólo aparece en tests: los fixtures se escriben en WAT y se
+# compilan en runtime, evitando una dependencia de toolchain wasm32.
+wat = { workspace = true }
diff --git a/modules/plugin-host/LEEME.md b/modules/plugin-host/LEEME.md
new file mode 100644
index 0000000..ee25861
--- /dev/null
+++ b/modules/plugin-host/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-module-plugin-host
+
+> Host para plugins WASM de [llimphi](../../README.md).
+
+Carga módulos WASM con la capability API del notebook (sandbox), los enchufa a la app como handlers de `Msg` extra. Permite extender la app sin recompilar.
diff --git a/modules/plugin-host/README.md b/modules/plugin-host/README.md
new file mode 100644
index 0000000..5adc29f
--- /dev/null
+++ b/modules/plugin-host/README.md
@@ -0,0 +1,5 @@
+# llimphi-module-plugin-host
+
+> WASM plugin host for [llimphi](../../README.md).
+
+Loads WASM modules with the notebook's capability API (sandbox), plugs them into the app as extra `Msg` handlers. Lets you extend the app without recompiling.
diff --git a/modules/plugin-host/src/lib.rs b/modules/plugin-host/src/lib.rs
new file mode 100644
index 0000000..12caafe
--- /dev/null
+++ b/modules/plugin-host/src/lib.rs
@@ -0,0 +1,334 @@
+//! llimphi-plugin-host — runtime de plugins WASM Tier 2 para apps Llimphi.
+//!
+//! Vea `docs/MODULES.md` (§Tier 2 — Plugins WASM) para el contrato
+//! completo. En síntesis:
+//!
+//! - Un plugin es un `.wasm` + un `manifest.toml` hermano que declara
+//!   `name`, `version`, `capabilities`, y los `Permissions` que pide.
+//! - El host expone imports bajo el namespace `"plugin"`. Cada uno se
+//!   gatea por un campo de `card_core::Permissions`: si el permiso falta,
+//!   el import **no se enlaza** y el plugin trap-ea al intentar usarlo.
+//! - El `.wasm` exporta `_invoke(cap_ptr, cap_len, arg_ptr, arg_len) -> i32`
+//!   y una `memory` lineal.
+//! - Invocar un plugin devuelve `PluginAction` — intención, no ejecución.
+//!   El host decide cómo materializar `OpenAt`/`SetStatus` en su contexto.
+
+use std::cell::RefCell;
+use std::path::{Path, PathBuf};
+
+use card_core::{FsPolicy, Permissions};
+use serde::Deserialize;
+use thiserror::Error;
+use tracing::{info, warn};
+use wasmi::{Caller, CompilationMode, Config, Engine, Linker, Memory, Module, Store};
+
+// =====================================================================
+// Manifest
+// =====================================================================
+
+/// Manifest sidecar (`manifest.toml`) que acompaña a cada `.wasm`.
+///
+/// El formato es estable: campos extra se ignoran con `#[serde(default)]`
+/// donde aplica, para que plugins viejos sigan cargando si el host suma
+/// metadatos opcionales.
+#[derive(Debug, Clone, Deserialize)]
+pub struct PluginManifest {
+    pub name: String,
+    pub version: String,
+    /// Capabilities que el plugin atiende. El host enruta invocaciones
+    /// por el nombre exacto pasado a `PluginHost::invoke(_, cap, _)`.
+    #[serde(default)]
+    pub capabilities: Vec<String>,
+    /// Permisos que el plugin necesita para no trap-ear. Si el manifest
+    /// pide más de lo que el host está dispuesto a conceder, la carga
+    /// puede aceptarse "downgraded" — pero el plugin entonces trap-eará
+    /// al intentar los imports que no se enlazaron. La política la fija
+    /// quien llama a `PluginHost::load_*`.
+    #[serde(default)]
+    pub permissions: Permissions,
+}
+
+impl PluginManifest {
+    pub fn from_toml(s: &str) -> Result<Self, PluginError> {
+        toml::from_str(s).map_err(|e| PluginError::Manifest(e.to_string()))
+    }
+}
+
+// =====================================================================
+// Acciones y errores
+// =====================================================================
+
+/// Intención que el plugin emite. Igual que en los módulos Tier 1, el
+/// plugin no sabe cómo el host materializa cada variante — sólo declara
+/// qué quiere que pase.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum PluginAction {
+    None,
+    SetStatus(String),
+    OpenAt { path: PathBuf, line: u32, col: u32 },
+}
+
+#[derive(Debug, Error)]
+pub enum PluginError {
+    #[error("manifest inválido: {0}")]
+    Manifest(String),
+    #[error("no se pudo leer {0}: {1}")]
+    Io(PathBuf, String),
+    #[error("compilando wasm: {0}")]
+    Compile(String),
+    #[error("instanciando wasm: {0}")]
+    Instantiate(String),
+    #[error("plugin no exporta `_invoke` con la signatura esperada: {0}")]
+    MissingEntry(String),
+    #[error("trap durante la ejecución del plugin: {0}")]
+    Trap(String),
+    #[error("no existe plugin con id {0:?}")]
+    UnknownPlugin(PluginId),
+}
+
+// =====================================================================
+// Host
+// =====================================================================
+
+/// Identificador opaco de un plugin cargado. Sólo se construye desde
+/// `PluginHost::load_*`.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub struct PluginId(u32);
+
+struct LoadedPlugin {
+    manifest: PluginManifest,
+    module: Module,
+}
+
+/// Estado por invocación. Vive sólo durante un `invoke` — se descarta al
+/// volver. Lo usamos como `Store::data()` para que los host imports
+/// puedan emitir su `PluginAction` sin globals. Los permisos no viajan
+/// aquí porque su efecto es link-time: los imports prohibidos
+/// simplemente no se enlazan.
+struct InvokeCtx {
+    /// Acción a devolver al host. `RefCell` porque los closures de
+    /// `func_wrap` toman `Caller` por referencia compartida.
+    pending: RefCell<PluginAction>,
+}
+
+pub struct PluginHost {
+    engine: Engine,
+    plugins: Vec<LoadedPlugin>,
+}
+
+impl Default for PluginHost {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl PluginHost {
+    pub fn new() -> Self {
+        // Eager: mismo modo que arje-wasm, comportamiento predecible y
+        // los traps de compilación salen en `load_*`, no en `invoke`.
+        let mut config = Config::default();
+        config.compilation_mode(CompilationMode::Eager);
+        Self { engine: Engine::new(&config), plugins: Vec::new() }
+    }
+
+    /// Carga `dir/plugin.wasm` + `dir/manifest.toml`. Por convención el
+    /// `.wasm` se llama igual que el directorio o `plugin.wasm`. Probamos
+    /// ambos para ser indulgentes con el packaging.
+    pub fn load_from_dir(&mut self, dir: impl AsRef<Path>) -> Result<PluginId, PluginError> {
+        let dir = dir.as_ref();
+        let manifest_path = dir.join("manifest.toml");
+        let manifest_str = std::fs::read_to_string(&manifest_path)
+            .map_err(|e| PluginError::Io(manifest_path.clone(), e.to_string()))?;
+        let manifest = PluginManifest::from_toml(&manifest_str)?;
+
+        let candidates = [dir.join("plugin.wasm"), dir.join(format!("{}.wasm", manifest.name))];
+        let (wasm_path, wasm_bytes) = candidates
+            .iter()
+            .find_map(|p| std::fs::read(p).ok().map(|b| (p.clone(), b)))
+            .ok_or_else(|| {
+                PluginError::Io(dir.join("plugin.wasm"), "no encontré ningún .wasm".into())
+            })?;
+
+        let _ = wasm_path;
+        self.load_bytes(manifest, &wasm_bytes)
+    }
+
+    /// Carga un plugin desde bytes ya en memoria (útil en tests y para
+    /// plugins embebidos en el binario del host).
+    pub fn load_bytes(
+        &mut self,
+        manifest: PluginManifest,
+        wasm_bytes: &[u8],
+    ) -> Result<PluginId, PluginError> {
+        let module = Module::new(&self.engine, wasm_bytes)
+            .map_err(|e| PluginError::Compile(e.to_string()))?;
+        let id = PluginId(self.plugins.len() as u32);
+        info!(
+            plugin = %manifest.name,
+            version = %manifest.version,
+            capabilities = ?manifest.capabilities,
+            "plugin Tier 2 cargado"
+        );
+        self.plugins.push(LoadedPlugin { manifest, module });
+        Ok(id)
+    }
+
+    pub fn manifest(&self, id: PluginId) -> Result<&PluginManifest, PluginError> {
+        self.plugins
+            .get(id.0 as usize)
+            .map(|p| &p.manifest)
+            .ok_or(PluginError::UnknownPlugin(id))
+    }
+
+    /// Devuelve la unión de capabilities de todos los plugins cargados —
+    /// la lista que el host enrola en su Card antes de `spawn_sidecar()`.
+    pub fn all_capabilities(&self) -> Vec<String> {
+        let mut caps: Vec<String> =
+            self.plugins.iter().flat_map(|p| p.manifest.capabilities.iter().cloned()).collect();
+        caps.sort();
+        caps.dedup();
+        caps
+    }
+
+    /// Invoca una capability sobre el plugin indicado. `args` se entrega
+    /// tal cual al plugin (bytes opacos — la app y el plugin acuerdan el
+    /// schema). El retorno colapsa el `_invoke` exit code y la
+    /// `PluginAction` que el plugin haya emitido.
+    pub fn invoke(
+        &self,
+        id: PluginId,
+        capability: &str,
+        args: &[u8],
+    ) -> Result<PluginAction, PluginError> {
+        let plugin = self.plugins.get(id.0 as usize).ok_or(PluginError::UnknownPlugin(id))?;
+        let ctx = InvokeCtx { pending: RefCell::new(PluginAction::None) };
+        let mut store = Store::new(&self.engine, ctx);
+        let linker = build_linker(&self.engine, &plugin.manifest.permissions)?;
+
+        // wasmi 1.0: `instantiate_and_start` corre la `(start)` section
+        // si la hay; nuestros plugins no la usan — su entrada es
+        // `_invoke`, llamada explícitamente más abajo.
+        let instance = linker
+            .instantiate_and_start(&mut store, &plugin.module)
+            .map_err(|e| PluginError::Instantiate(e.to_string()))?;
+
+        let memory = instance
+            .get_memory(&store, "memory")
+            .ok_or_else(|| PluginError::MissingEntry("plugin sin export `memory`".into()))?;
+
+        // Escribimos cap + args al inicio de la memoria del plugin. v0
+        // del ABI: layout fijo, no negociado. Si el plugin necesita más
+        // espacio se va a cualquier offset por encima — su asunto.
+        let cap_bytes = capability.as_bytes();
+        write_memory(&mut store, memory, 0, cap_bytes)?;
+        let args_off = cap_bytes.len();
+        write_memory(&mut store, memory, args_off, args)?;
+
+        let func = instance
+            .get_typed_func::<(i32, i32, i32, i32), i32>(&store, "_invoke")
+            .map_err(|e| PluginError::MissingEntry(e.to_string()))?;
+
+        let _exit = func
+            .call(
+                &mut store,
+                (0, cap_bytes.len() as i32, args_off as i32, args.len() as i32),
+            )
+            .map_err(|e| PluginError::Trap(e.to_string()))?;
+
+        let action = store.data().pending.borrow().clone();
+        Ok(action)
+    }
+}
+
+// =====================================================================
+// Host imports — gateados por Permissions
+// =====================================================================
+
+fn build_linker(
+    engine: &Engine,
+    perms: &Permissions,
+) -> Result<Linker<InvokeCtx>, PluginError> {
+    let mut linker = Linker::<InvokeCtx>::new(engine);
+
+    // log — siempre disponible. Aún plugins sin permisos pueden trazar.
+    linker
+        .func_wrap("plugin", "log", |caller: Caller<'_, InvokeCtx>, ptr: i32, len: i32| {
+            if let Some(s) = read_utf8(&caller, ptr, len) {
+                info!("[plugin] {s}");
+            }
+        })
+        .map_err(|e| PluginError::Instantiate(e.to_string()))?;
+
+    // set_status — siempre disponible. No toca recursos del sistema.
+    linker
+        .func_wrap("plugin", "set_status", |caller: Caller<'_, InvokeCtx>, ptr: i32, len: i32| {
+            if let Some(s) = read_utf8(&caller, ptr, len) {
+                *caller.data().pending.borrow_mut() = PluginAction::SetStatus(s);
+            }
+        })
+        .map_err(|e| PluginError::Instantiate(e.to_string()))?;
+
+    // open_at — requiere filesystem >= read-only. Si el permiso falta NO
+    // enlazamos el import: el plugin trap-eará al invocarlo, que es la
+    // semántica correcta para un sandbox.
+    if matches!(perms.filesystem, FsPolicy::ReadOnly | FsPolicy::ReadWrite) {
+        linker
+            .func_wrap(
+                "plugin",
+                "open_at",
+                |caller: Caller<'_, InvokeCtx>, ptr: i32, len: i32, line: i32, col: i32| {
+                    if let Some(s) = read_utf8(&caller, ptr, len) {
+                        *caller.data().pending.borrow_mut() = PluginAction::OpenAt {
+                            path: PathBuf::from(s),
+                            line: line.max(0) as u32,
+                            col: col.max(0) as u32,
+                        };
+                    }
+                },
+            )
+            .map_err(|e| PluginError::Instantiate(e.to_string()))?;
+    } else {
+        warn!(
+            "plugin sin permiso filesystem — `plugin.open_at` no enlazado; \
+             llamarlo trap-eará"
+        );
+    }
+
+    Ok(linker)
+}
+
+// =====================================================================
+// Helpers de memoria
+// =====================================================================
+
+fn read_utf8(caller: &Caller<'_, InvokeCtx>, ptr: i32, len: i32) -> Option<String> {
+    let memory = caller.get_export("memory")?.into_memory()?;
+    let bytes = read_memory(caller, memory, ptr, len)?;
+    String::from_utf8(bytes).ok()
+}
+
+fn read_memory(
+    caller: &Caller<'_, InvokeCtx>,
+    memory: Memory,
+    ptr: i32,
+    len: i32,
+) -> Option<Vec<u8>> {
+    let ptr = ptr.max(0) as usize;
+    let len = len.max(0) as usize;
+    let data = memory.data(caller);
+    if ptr.saturating_add(len) > data.len() {
+        return None;
+    }
+    Some(data[ptr..ptr + len].to_vec())
+}
+
+fn write_memory(
+    store: &mut Store<InvokeCtx>,
+    memory: Memory,
+    off: usize,
+    bytes: &[u8],
+) -> Result<(), PluginError> {
+    memory
+        .write(store, off, bytes)
+        .map_err(|e| PluginError::Trap(format!("write_memory off={off} len={}: {e}", bytes.len())))
+}
diff --git a/modules/plugin-host/tests/fixtures/hello-status/.gitignore b/modules/plugin-host/tests/fixtures/hello-status/.gitignore
new file mode 100644
index 0000000..ef7d91f
--- /dev/null
+++ b/modules/plugin-host/tests/fixtures/hello-status/.gitignore
@@ -0,0 +1 @@
+plugin.wasm
diff --git a/modules/plugin-host/tests/fixtures/hello-status/manifest.toml b/modules/plugin-host/tests/fixtures/hello-status/manifest.toml
new file mode 100644
index 0000000..d2ab1af
--- /dev/null
+++ b/modules/plugin-host/tests/fixtures/hello-status/manifest.toml
@@ -0,0 +1,11 @@
+name = "hello-status"
+version = "0.1.0"
+capabilities = ["status.greet"]
+
+[permissions]
+networking = "none"
+filesystem = "none"
+processes  = false
+
+[permissions.ipc]
+allow = []
diff --git a/modules/plugin-host/tests/fixtures/hello-status/plugin.wat b/modules/plugin-host/tests/fixtures/hello-status/plugin.wat
new file mode 100644
index 0000000..b890bc7
--- /dev/null
+++ b/modules/plugin-host/tests/fixtures/hello-status/plugin.wat
@@ -0,0 +1,44 @@
+;; Plugin fixture: "hello-status".
+;;
+;; Lee el payload de args que el host escribió en memoria justo
+;; después del nombre de la capability, y lo concatena con un saludo
+;; fijo "hola, " en otro offset. Después emite el resultado via
+;; `plugin.set_status`.
+;;
+;; Layout de memoria al entrar `_invoke`:
+;;   [0 .. cap_len)               nombre de capability (UTF-8)
+;;   [cap_len .. cap_len+arg_len) args del host (UTF-8)
+;;
+;; El plugin coloca su buffer de salida en el offset 256 para no
+;; pisar lo anterior. v0 del ABI no negocia layouts — la convención
+;; es que el plugin elige offsets altos.
+(module
+  (import "plugin" "log"        (func $log        (param i32 i32)))
+  (import "plugin" "set_status" (func $set_status (param i32 i32)))
+
+  (memory (export "memory") 1)
+
+  ;; "hola, " en offset 256 (6 bytes)
+  (data (i32.const 256) "hola, ")
+
+  (func (export "_invoke")
+        (param $cap_ptr i32) (param $cap_len i32)
+        (param $arg_ptr i32) (param $arg_len i32)
+        (result i32)
+    ;; Traza para debug: el host capturará "[plugin] greet"
+    (call $log (i32.const 256) (i32.const 5))
+
+    ;; Copia los args al final del prefijo "hola, " en 256+6=262
+    (memory.copy
+      (i32.const 262)       ;; dst = 256 + len("hola, ")
+      (local.get $arg_ptr)  ;; src = donde el host puso args
+      (local.get $arg_len))
+
+    ;; Total len = 6 ("hola, ") + arg_len
+    (call $set_status
+      (i32.const 256)
+      (i32.add (i32.const 6) (local.get $arg_len)))
+
+    (i32.const 0)
+  )
+)
diff --git a/modules/plugin-host/tests/smoke.rs b/modules/plugin-host/tests/smoke.rs
new file mode 100644
index 0000000..e6ec36d
--- /dev/null
+++ b/modules/plugin-host/tests/smoke.rs
@@ -0,0 +1,109 @@
+//! Smoke tests del runtime Tier 2 — verifican:
+//!
+//! 1. Carga desde disco (`manifest.toml` + `.wasm`) e invocación que
+//!    devuelve `PluginAction::SetStatus` con el saludo concatenado.
+//! 2. Sandbox por permisos: un plugin con `filesystem = "none"` que
+//!    intenta llamar `plugin.open_at` trap-ea — el import no se
+//!    enlazó, así que el módulo importa una función inexistente.
+//! 3. Permiso concedido: el mismo plugin con `filesystem = "read-only"`
+//!    sí enlaza, ejecuta, y emite `PluginAction::OpenAt`.
+
+use std::path::PathBuf;
+
+use card_core::{FsPolicy, Permissions};
+use llimphi_plugin_host::{PluginAction, PluginError, PluginHost, PluginManifest};
+
+fn fixture_dir() -> PathBuf {
+    PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("tests/fixtures/hello-status")
+}
+
+/// Compila el .wat del fixture a .wasm en el OUT_DIR efímero del test.
+/// Lo hacemos por test (no en build.rs) para mantener el crate sin
+/// build script — el costo es trivial y la lógica vive con el test.
+fn compile_fixture_to(dir: &std::path::Path) {
+    let wat = std::fs::read_to_string(dir.join("plugin.wat")).expect("leo plugin.wat");
+    let wasm = wat::parse_str(&wat).expect("WAT del fixture compila a wasm");
+    std::fs::write(dir.join("plugin.wasm"), wasm).expect("escribo plugin.wasm");
+}
+
+#[test]
+fn carga_desde_directorio_y_devuelve_set_status() {
+    let dir = fixture_dir();
+    compile_fixture_to(&dir);
+
+    let mut host = PluginHost::new();
+    let id = host.load_from_dir(&dir).expect("plugin carga desde dir");
+
+    let manifest = host.manifest(id).expect("manifest accesible");
+    assert_eq!(manifest.name, "hello-status");
+    assert_eq!(manifest.capabilities, vec!["status.greet".to_string()]);
+
+    let action = host.invoke(id, "status.greet", b"mundo").expect("invoke ok");
+    assert_eq!(action, PluginAction::SetStatus("hola, mundo".into()));
+
+    // El host puede enumerar capabilities agregadas para construir su Card.
+    assert_eq!(host.all_capabilities(), vec!["status.greet".to_string()]);
+}
+
+/// WAT que intenta importar `plugin.open_at`. Sirve como "plugin
+/// malicioso" para verificar el sandbox: si el host no concede
+/// `filesystem`, el linker no enlaza el import → wasmi rechaza la
+/// instanciación con un error de import faltante.
+fn wants_open_at_wat() -> &'static str {
+    // El path va en offset 256 para no colisionar con el buffer
+    // [cap | args] que el host escribe a partir del offset 0.
+    r#"
+(module
+  (import "plugin" "open_at" (func $open_at (param i32 i32 i32 i32)))
+  (memory (export "memory") 1)
+  (data (i32.const 256) "/etc/passwd")
+  (func (export "_invoke")
+        (param i32) (param i32) (param i32) (param i32)
+        (result i32)
+    (call $open_at (i32.const 256) (i32.const 11) (i32.const 10) (i32.const 5))
+    (i32.const 0)
+  )
+)
+"#
+}
+
+#[test]
+fn sin_permiso_filesystem_el_plugin_no_instancia() {
+    let bytes = wat::parse_str(wants_open_at_wat()).unwrap();
+    let manifest = PluginManifest {
+        name: "wants-fs".into(),
+        version: "0.1.0".into(),
+        capabilities: vec!["fs.open".into()],
+        permissions: Permissions::default(), // filesystem = none
+    };
+
+    let mut host = PluginHost::new();
+    let id = host.load_bytes(manifest, &bytes).expect("carga ok — el sandbox actúa al invocar");
+
+    let err = host.invoke(id, "fs.open", b"").expect_err("debe fallar sin permiso fs");
+    // wasmi reporta el import faltante en la instanciación.
+    assert!(
+        matches!(err, PluginError::Instantiate(_)),
+        "esperaba Instantiate, vi {err:?}"
+    );
+}
+
+#[test]
+fn con_permiso_filesystem_el_plugin_emite_open_at() {
+    let bytes = wat::parse_str(wants_open_at_wat()).unwrap();
+    let manifest = PluginManifest {
+        name: "wants-fs".into(),
+        version: "0.1.0".into(),
+        capabilities: vec!["fs.open".into()],
+        permissions: Permissions { filesystem: FsPolicy::ReadOnly, ..Permissions::default() },
+    };
+
+    let mut host = PluginHost::new();
+    let id = host.load_bytes(manifest, &bytes).unwrap();
+    let action = host.invoke(id, "fs.open", b"").expect("con permiso, debe correr");
+
+    assert_eq!(
+        action,
+        PluginAction::OpenAt { path: PathBuf::from("/etc/passwd"), line: 10, col: 5 }
+    );
+}
diff --git a/modules/selector/Cargo.toml b/modules/selector/Cargo.toml
new file mode 100644
index 0000000..ace3212
--- /dev/null
+++ b/modules/selector/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-module-selector"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-module-selector — trait Selector con dos backends: HostSelector (paths del FS via std::fs) y WawaSelector (khipus por hash, sello digital). Una sola API 'abrir/guardar' que funciona en cualquier entorno gioser."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/modules/selector/src/lib.rs b/modules/selector/src/lib.rs
new file mode 100644
index 0000000..5910a3c
--- /dev/null
+++ b/modules/selector/src/lib.rs
@@ -0,0 +1,245 @@
+//! `llimphi-module-selector` — abstracción de "abrir/guardar" portable
+//! entre host (paths del FS) y wawa (khipus por hash).
+//!
+//! ## Por qué
+//!
+//! Una app gioser que sólo conoce paths (`PathBuf`) se rompe en wawa,
+//! donde el almacenamiento es direccionado por contenido (BLAKE3 + DAG)
+//! y no existe el concepto de "carpeta /home/usuario". Pero la mayoría
+//! de las apps no necesitan saber la diferencia: sólo quieren preguntar
+//! "qué item quiere abrir el usuario" o "dónde guardo este blob".
+//!
+//! Este crate expone:
+//! - El trait [`Selector`] con dos métodos: `list_candidates()` (para
+//!   armar la UI del picker) y `realize(handle)` (para resolver el
+//!   item elegido a bytes).
+//! - Un `ItemHandle` opaco — la app no debe inspeccionarlo, sólo
+//!   pasarlo de vuelta al selector.
+//! - [`HostSelector`] con root path + extension filter (impl real).
+//! - [`WawaSelector`] como **placeholder** con la API definida — la
+//!   integración real con `akasha` / `wawa-kernel` ocurre cuando la
+//!   suite empiece a correr in-cage. Por ahora exporta tipos y panica
+//!   si se invoca, lo cual está bien: el código que lo construye
+//!   queda compilable y las apps pueden tipar contra el trait.
+//!
+//! ## API mínima
+//!
+//! ```ignore
+//! use llimphi_module_selector::{HostSelector, Selector};
+//!
+//! let sel = HostSelector::new("/home/usr/docs", &[".pluma", ".khipu"]);
+//! let items = sel.list_candidates()?;
+//! // (la app muestra `items.iter().map(|i| &i.display_name)` en su picker)
+//! // user elige el index N:
+//! let bytes = sel.realize(&items[N].handle)?;
+//! ```
+
+#![forbid(unsafe_code)]
+
+use std::path::{Path, PathBuf};
+
+/// Resultado de la operación — `String` como error para que no le
+/// importe a la app si el backend es FS o wawa.
+pub type SelectorResult<T> = Result<T, String>;
+
+/// Item visible en el picker. `handle` es opaco — sólo el `Selector`
+/// que lo emitió sabe interpretarlo.
+#[derive(Debug, Clone)]
+pub struct Item {
+    /// Nombre legible para mostrar en el picker. Para `HostSelector`
+    /// es el path relativo al root; para `WawaSelector` será el alias
+    /// del khipu o un hash truncado si no tiene alias.
+    pub display_name: String,
+    /// Tamaño en bytes si se conoce — para mostrar al lado del nombre.
+    /// `None` cuando es caro de calcular (e.g. khipu blob remoto).
+    pub size_bytes: Option<u64>,
+    pub handle: ItemHandle,
+}
+
+/// Handle opaco. Internamente puede ser un path (host) o un hash
+/// (wawa). La app no debe construir uno a mano — lo recibe del
+/// `Selector` y se lo devuelve al `realize()`.
+#[derive(Debug, Clone)]
+pub enum ItemHandle {
+    /// Path absoluto en el FS del host.
+    HostPath(PathBuf),
+    /// Hash de contenido BLAKE3 (32 bytes hex) en el almacén wawa.
+    /// La integración real lo resuelve via `almacen::cargar(hash)`.
+    WawaHash([u8; 32]),
+}
+
+/// Trait que abstrae el medio de almacenamiento. Una app gioser que
+/// quiera funcionar tanto en host como en wawa toma un `&dyn Selector`
+/// en su modelo en lugar de un `PathBuf` concreto.
+pub trait Selector {
+    /// Lista los items "abribles" según los criterios del selector
+    /// (extensión, glob, scope). Para host suele ser un walk del root;
+    /// para wawa, los khipus marcados con cierto namespace.
+    fn list_candidates(&self) -> SelectorResult<Vec<Item>>;
+
+    /// Resuelve un `ItemHandle` a los bytes del item.
+    fn realize(&self, handle: &ItemHandle) -> SelectorResult<Vec<u8>>;
+
+    /// Guarda `bytes` bajo el nombre lógico `name`. Devuelve el
+    /// `ItemHandle` del item recién creado. Para host esto es
+    /// `root.join(name) + write`; para wawa, ingerir en el almacén.
+    fn save(&self, name: &str, bytes: &[u8]) -> SelectorResult<ItemHandle>;
+}
+
+// =====================================================================
+// HostSelector — backend de FS clásico
+// =====================================================================
+
+/// Selector que walkea un root del filesystem y filtra por extensión.
+/// Implementación lineal — para roots gigantes la app debería cachear
+/// los candidates al arrancar (igual que hace el `file-picker` actual).
+pub struct HostSelector {
+    root: PathBuf,
+    /// Lista de extensiones aceptadas (con el punto, ej. `".pluma"`).
+    /// Vacío = todas.
+    extensions: Vec<String>,
+}
+
+impl HostSelector {
+    pub fn new(root: impl Into<PathBuf>, extensions: &[&str]) -> Self {
+        Self {
+            root: root.into(),
+            extensions: extensions.iter().map(|s| (*s).to_string()).collect(),
+        }
+    }
+
+    fn accept(&self, path: &Path) -> bool {
+        if self.extensions.is_empty() {
+            return true;
+        }
+        let Some(name) = path.file_name().and_then(|s| s.to_str()) else {
+            return false;
+        };
+        self.extensions.iter().any(|ext| name.ends_with(ext))
+    }
+
+    fn walk(&self, dir: &Path, out: &mut Vec<Item>) -> SelectorResult<()> {
+        let entries = std::fs::read_dir(dir).map_err(|e| e.to_string())?;
+        for entry in entries.flatten() {
+            let path = entry.path();
+            if path.is_dir() {
+                // Saltamos directorios "ruidosos" (target, .git, node_modules).
+                if let Some(name) = path.file_name().and_then(|s| s.to_str()) {
+                    if matches!(name, "target" | ".git" | "node_modules" | ".idea") {
+                        continue;
+                    }
+                }
+                self.walk(&path, out)?;
+            } else if self.accept(&path) {
+                let display_name = path
+                    .strip_prefix(&self.root)
+                    .map(|p| p.display().to_string())
+                    .unwrap_or_else(|_| path.display().to_string());
+                let size_bytes = entry.metadata().ok().map(|m| m.len());
+                out.push(Item {
+                    display_name,
+                    size_bytes,
+                    handle: ItemHandle::HostPath(path),
+                });
+            }
+        }
+        Ok(())
+    }
+}
+
+impl Selector for HostSelector {
+    fn list_candidates(&self) -> SelectorResult<Vec<Item>> {
+        let mut out = Vec::new();
+        self.walk(&self.root, &mut out)?;
+        Ok(out)
+    }
+
+    fn realize(&self, handle: &ItemHandle) -> SelectorResult<Vec<u8>> {
+        match handle {
+            ItemHandle::HostPath(p) => std::fs::read(p).map_err(|e| e.to_string()),
+            ItemHandle::WawaHash(_) => Err("HostSelector no resuelve hashes wawa".into()),
+        }
+    }
+
+    fn save(&self, name: &str, bytes: &[u8]) -> SelectorResult<ItemHandle> {
+        let path = self.root.join(name);
+        if let Some(parent) = path.parent() {
+            std::fs::create_dir_all(parent).map_err(|e| e.to_string())?;
+        }
+        std::fs::write(&path, bytes).map_err(|e| e.to_string())?;
+        Ok(ItemHandle::HostPath(path))
+    }
+}
+
+// =====================================================================
+// WawaSelector — placeholder para integración con akasha/almacen
+// =====================================================================
+
+/// Selector para entorno wawa. **No implementado** — la integración real
+/// requiere bindings al `wawa-kernel::almacen` (BLAKE3 + log + GC), que
+/// vive fuera del workspace global. Por ahora expone la API para que el
+/// código que la usa compile, y panica en runtime para flaggear que
+/// alguien intentó usarla antes de tiempo.
+///
+/// Cuando llegue la integración real:
+/// 1. `wawa-kernel` exporta una crate `wawa-almacen-client` cross-bound
+///    accesible desde apps WASM.
+/// 2. `WawaSelector::new(namespace)` se conecta a ese cliente.
+/// 3. `list_candidates()` consulta `almacen::listar(namespace)`.
+/// 4. `realize(WawaHash(h))` invoca `almacen::cargar(h)`.
+/// 5. `save(name, bytes)` invoca `almacen::ingerir(bytes)` y registra
+///    el alias `name → hash`.
+pub struct WawaSelector {
+    /// Namespace lógico (ej. `"pluma.documentos"`) — el almacén filtra
+    /// los khipus marcados con este tag.
+    pub namespace: String,
+}
+
+impl WawaSelector {
+    pub fn new(namespace: impl Into<String>) -> Self {
+        Self { namespace: namespace.into() }
+    }
+}
+
+impl Selector for WawaSelector {
+    fn list_candidates(&self) -> SelectorResult<Vec<Item>> {
+        Err(format!(
+            "WawaSelector('{}') sin backend wawa registrado — pendiente de integración con wawa-almacen-client",
+            self.namespace
+        ))
+    }
+
+    fn realize(&self, _handle: &ItemHandle) -> SelectorResult<Vec<u8>> {
+        Err("WawaSelector::realize sin backend wawa registrado".into())
+    }
+
+    fn save(&self, _name: &str, _bytes: &[u8]) -> SelectorResult<ItemHandle> {
+        Err("WawaSelector::save sin backend wawa registrado".into())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn host_selector_accept_with_extensions() {
+        let s = HostSelector::new("/tmp", &[".pluma", ".khipu"]);
+        assert!(s.accept(Path::new("/tmp/foo.pluma")));
+        assert!(s.accept(Path::new("/tmp/bar.khipu")));
+        assert!(!s.accept(Path::new("/tmp/baz.txt")));
+    }
+
+    #[test]
+    fn host_selector_empty_extensions_accepts_all() {
+        let s = HostSelector::new("/tmp", &[]);
+        assert!(s.accept(Path::new("/tmp/anything.rs")));
+        assert!(s.accept(Path::new("/tmp/anything.unknown")));
+    }
+
+    #[test]
+    fn wawa_selector_returns_err_until_backend_lands() {
+        let s = WawaSelector::new("pluma.documentos");
+        assert!(s.list_candidates().is_err());
+    }
+}
diff --git a/modules/shuma-term/Cargo.toml b/modules/shuma-term/Cargo.toml
new file mode 100644
index 0000000..49beab4
--- /dev/null
+++ b/modules/shuma-term/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "llimphi-module-shuma-term"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-module-shuma-term — terminal integrado tipo Ctrl+\\` de VS Code. Módulo Llimphi sobre shuma-exec (PTY real) + vt100 (emulación). Cualquier app Llimphi puede enchufar un terminal sandboxeado por el shell del usuario."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+shuma-exec = { path = "../../../shuma/sandbox/shuma-exec" }
+vt100 = { workspace = true }
diff --git a/modules/shuma-term/LEEME.md b/modules/shuma-term/LEEME.md
new file mode 100644
index 0000000..b1d6806
--- /dev/null
+++ b/modules/shuma-term/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-module-shuma-term
+
+> Terminal embebida (shell shuma) de [llimphi](../../README.md).
+
+Wrapper de [`shuma-shell-llimphi`](../../../shuma/shuma-shell-llimphi/README.md) montable adentro de cualquier app. Útil para `nada`, IDE-like setups.
diff --git a/modules/shuma-term/README.md b/modules/shuma-term/README.md
new file mode 100644
index 0000000..182a103
--- /dev/null
+++ b/modules/shuma-term/README.md
@@ -0,0 +1,5 @@
+# llimphi-module-shuma-term
+
+> Embedded terminal (shuma shell) of [llimphi](../../README.md).
+
+Wrapper of [`shuma-shell-llimphi`](../../../shuma/shuma-shell-llimphi/README.md) mountable inside any app. Useful for `nada`, IDE-like setups.
diff --git a/modules/shuma-term/src/lib.rs b/modules/shuma-term/src/lib.rs
new file mode 100644
index 0000000..5d14cc6
--- /dev/null
+++ b/modules/shuma-term/src/lib.rs
@@ -0,0 +1,511 @@
+//! `llimphi-module-shuma-term` — terminal integrado al estilo Ctrl+` de
+//! VS Code o "Terminal" de JetBrains, pero enchufable en cualquier app
+//! Llimphi.
+//!
+//! Lo monta sobre dos piezas que ya existen:
+//!
+//! - [`shuma_exec::Exec::Pty`] aloja un pseudo-terminal cross-platform
+//!   (`portable-pty`), lanza el shell con `TERM=xterm-256color`, y
+//!   entrega los bytes crudos por un canal MPSC. El módulo no toca
+//!   syscalls — sólo consume eventos.
+//! - [`vt100::Parser`] convierte esos bytes en un buffer de pantalla
+//!   ANSI: cursor, erase, OSC, scrollback. El módulo le pasa los bytes
+//!   y al renderizar pide `screen().contents()`.
+//!
+//! Sigue el contrato Llimphi de `docs/MODULES.md`: `State + Msg +
+//! Action + apply/on_key/open_shortcut/view + Palette`.
+//!
+//! ## Cómo lo enchufa una app (resumen)
+//!
+//! ```ignore
+//! struct Model { term: Option<ShumaTermState>, … }
+//! enum Msg { Term(ShumaTermMsg), Tick, … }
+//!
+//! // open: shuma_term::spawn("/home/user", 100, 30)?
+//! // on_key: si term.is_some() y on_key devuelve Some(msg) → Msg::Term(msg)
+//! //         si term.is_none() y open_shortcut(ev) → Msg::Term(Open)
+//! // tick periódico: dispatch Msg::Term(Tick) para drenar PTY
+//! // apply: match action { Close → model.term = None, SetStatus(s) → … }
+//! // view:  si term.is_some() → push view(...)
+//! ```
+
+#![forbid(unsafe_code)]
+
+use std::time::Instant;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{Key, KeyEvent, KeyState, NamedKey, View};
+use shuma_exec::{CommandSpec, Exec, Killer, RunEvent, RunHandle};
+
+/// Capabilities que aporta este módulo al host. El host las puede
+/// agregar a `provides` en su `card_core::Card` para que el broker
+/// chasqui descubra que la instancia ofrece terminal integrado.
+pub const CAPABILITIES: &[&str] = &["editor.terminal"];
+
+/// Dimensiones por defecto del PTY. Cubren un panel inferior tipo
+/// VS Code en una pantalla 1080p. Las apps pueden pasar otras a
+/// [`spawn_with`].
+pub const DEFAULT_COLS: u16 = 100;
+pub const DEFAULT_ROWS: u16 = 24;
+
+const SCROLLBACK: usize = 2000;
+
+// =====================================================================
+// State
+// =====================================================================
+
+/// Estado del panel terminal. Encapsula el `RunHandle` del shell y un
+/// `vt100::Parser` que mantiene el buffer de pantalla. No es `Clone`
+/// (los handles son únicos), y el host lo embebe como
+/// `Option<ShumaTermState>`.
+pub struct ShumaTermState {
+    handle: RunHandle,
+    killer: Killer,
+    parser: vt100::Parser,
+    cols: u16,
+    rows: u16,
+    /// Si el shell ya emitió `Exited(code)`. El panel se queda visible
+    /// para que el usuario pueda leer la última salida antes de cerrar.
+    exit_code: Option<i32>,
+    /// CWD inicial — útil para el header sin tener que tocar /proc.
+    cwd: String,
+    started_at: Instant,
+}
+
+impl ShumaTermState {
+    /// Bytes que el módulo ya consumió desde el PTY. Útil para tests y
+    /// debug — no es parte del contrato Tier 1.
+    pub fn screen_contents(&self) -> String {
+        self.parser.screen().contents()
+    }
+
+    pub fn cols(&self) -> u16 {
+        self.cols
+    }
+    pub fn rows(&self) -> u16 {
+        self.rows
+    }
+    pub fn exit_code(&self) -> Option<i32> {
+        self.exit_code
+    }
+    pub fn cwd(&self) -> &str {
+        &self.cwd
+    }
+}
+
+impl Drop for ShumaTermState {
+    fn drop(&mut self) {
+        // Si el host descarta el state (panel cerrado), no dejamos al
+        // shell huérfano consumiendo CPU. SIGTERM educado primero;
+        // shuma-exec se encarga del SIGKILL si hace falta.
+        self.killer.term();
+    }
+}
+
+/// Lanza el shell por defecto (`$SHELL`, fallback `/bin/sh`) en `cwd`
+/// con tamaño de PTY por defecto.
+pub fn spawn(cwd: impl Into<String>) -> ShumaTermState {
+    spawn_with(cwd, default_shell(), Vec::new(), DEFAULT_COLS, DEFAULT_ROWS)
+}
+
+/// Variante con control fino de programa, args y tamaño.
+pub fn spawn_with(
+    cwd: impl Into<String>,
+    program: String,
+    args: Vec<String>,
+    cols: u16,
+    rows: u16,
+) -> ShumaTermState {
+    let cwd = cwd.into();
+    let spec = CommandSpec {
+        exec: Exec::Pty { program, args, cols, rows },
+        cwd: cwd.clone(),
+        capture_limit: 0,
+        spill_path: None,
+        stdin_data: None,
+        capture_stages: false,
+    };
+    let handle = shuma_exec::run(&spec);
+    let killer = handle.killer();
+    ShumaTermState {
+        handle,
+        killer,
+        parser: vt100::Parser::new(rows, cols, SCROLLBACK),
+        cols,
+        rows,
+        exit_code: None,
+        cwd,
+        started_at: Instant::now(),
+    }
+}
+
+fn default_shell() -> String {
+    std::env::var("SHELL").unwrap_or_else(|_| "/bin/sh".to_string())
+}
+
+// =====================================================================
+// Msg / Action
+// =====================================================================
+
+/// Vocabulario interno. El host lo wrapea en su `Msg`.
+#[derive(Debug, Clone)]
+pub enum ShumaTermMsg {
+    /// Símbolo conveniente para que el host dispatche al detectar el
+    /// shortcut. El módulo no crea el state él mismo — el host lo crea
+    /// con [`spawn`] porque conoce el cwd canónico de la app.
+    Open,
+    /// El usuario pidió cerrar el panel.
+    Close,
+    /// Tecla mientras el panel está enfocado. Se traduce a bytes y se
+    /// reenvía al PTY.
+    KeyInput(KeyEvent),
+    /// Tick del host: drena eventos pendientes del PTY (bytes y exit).
+    /// El host debe enviar este Msg de forma periódica (en cada frame,
+    /// o cuando hay actividad). Sin Tick el terminal no avanza.
+    Tick,
+    /// Mata el shell (SIGTERM); el panel queda visible mostrando el
+    /// estado final hasta que el host reciba `Close`.
+    Terminate,
+}
+
+/// Efecto solicitado al host.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum ShumaTermAction {
+    None,
+    /// El host debería remover el state del modelo.
+    Close,
+    /// El host debería actualizar su barra de estado.
+    SetStatus(String),
+}
+
+// =====================================================================
+// apply / on_key / open_shortcut
+// =====================================================================
+
+/// Aplica un mensaje al estado.
+pub fn apply(state: &mut ShumaTermState, msg: ShumaTermMsg) -> ShumaTermAction {
+    match msg {
+        ShumaTermMsg::Open => ShumaTermAction::None,
+        ShumaTermMsg::Close => ShumaTermAction::Close,
+        ShumaTermMsg::Terminate => {
+            state.killer.term();
+            ShumaTermAction::SetStatus("shuma · SIGTERM".into())
+        }
+        ShumaTermMsg::Tick => drain(state),
+        ShumaTermMsg::KeyInput(ev) => {
+            // Interceptaciones del módulo (no llegan al PTY):
+            //   Ctrl+Shift+W → cierra el panel.
+            // Cualquier otra combinación se traduce a bytes y se envía.
+            if ev.state == KeyState::Pressed
+                && ev.modifiers.ctrl
+                && ev.modifiers.shift
+                && matches!(&ev.key, Key::Character(s) if s.eq_ignore_ascii_case("w"))
+            {
+                return ShumaTermAction::Close;
+            }
+            let bytes = key_to_bytes(&ev);
+            if !bytes.is_empty() {
+                state.handle.write_input(bytes);
+            }
+            ShumaTermAction::None
+        }
+    }
+}
+
+/// Routing de teclas cuando el panel está enfocado. Devuelve `Some` para
+/// todo evento `Pressed` — el terminal **traga** las teclas; el host no
+/// debe reusarlas para sus propios atajos mientras este panel esté
+/// activo (la excepción es el atajo de apertura, que el host filtra
+/// antes de delegar).
+pub fn on_key(_state: &ShumaTermState, event: &KeyEvent) -> Option<ShumaTermMsg> {
+    if event.state != KeyState::Pressed {
+        return None;
+    }
+    Some(ShumaTermMsg::KeyInput(event.clone()))
+}
+
+/// El atajo recomendado para abrir: **Ctrl+`** (backtick), igual que
+/// VS Code. Los hosts pueden ignorarlo y usar otro.
+pub fn open_shortcut(event: &KeyEvent) -> bool {
+    event.state == KeyState::Pressed
+        && event.modifiers.ctrl
+        && !event.modifiers.shift
+        && matches!(&event.key, Key::Character(s) if s == "`")
+}
+
+// =====================================================================
+// Drenado del PTY
+// =====================================================================
+
+fn drain(state: &mut ShumaTermState) -> ShumaTermAction {
+    let mut bytes_in = 0usize;
+    let mut final_action = ShumaTermAction::None;
+    for ev in state.handle.try_events() {
+        match ev {
+            RunEvent::Bytes(b) => {
+                bytes_in += b.len();
+                state.parser.process(&b);
+            }
+            RunEvent::Exited(code) => {
+                state.exit_code = Some(code);
+                let elapsed = state.started_at.elapsed().as_secs_f64();
+                final_action = ShumaTermAction::SetStatus(format!(
+                    "shuma · exit {code} · {elapsed:.1}s"
+                ));
+            }
+            RunEvent::Failed(err) => {
+                state.exit_code = Some(-1);
+                final_action =
+                    ShumaTermAction::SetStatus(format!("shuma · falló: {err}"));
+            }
+            // Stdout/Stderr/Truncated/Spilled no aplican al modo Pty.
+            _ => {}
+        }
+    }
+    if matches!(final_action, ShumaTermAction::None) && bytes_in > 0 {
+        // Nada que reportar — el repaint que el host hará por el frame
+        // basta para mostrar lo nuevo.
+        ShumaTermAction::None
+    } else {
+        final_action
+    }
+}
+
+// =====================================================================
+// Mapeo KeyEvent → bytes
+// =====================================================================
+
+/// Convierte un `KeyEvent` ya recibido en los bytes que un terminal
+/// xterm espera. Cubre el subset usable (chars + control + flechas +
+/// home/end/page + fn keys), suficiente para shells modernos, TUIs
+/// (vim, htop, less) y CLIs interactivas (claude code, fzf).
+pub fn key_to_bytes(ev: &KeyEvent) -> Vec<u8> {
+    if ev.state != KeyState::Pressed {
+        return Vec::new();
+    }
+
+    // Teclas con nombre primero: flechas, etc. Se mapean a CSI/SS3
+    // estándar (xterm-256color).
+    if let Key::Named(named) = &ev.key {
+        return named_to_bytes(*named);
+    }
+
+    // Caracter: si hay Ctrl+letra → control byte (Ctrl+C = 0x03).
+    if let Key::Character(s) = &ev.key {
+        if ev.modifiers.ctrl && !ev.modifiers.alt {
+            if let Some(b) = ctrl_byte(s) {
+                return vec![b];
+            }
+        }
+        // Alt+x → ESC + x (convención xterm meta-sends-escape).
+        if ev.modifiers.alt {
+            let mut out = vec![0x1b];
+            out.extend_from_slice(s.as_bytes());
+            return out;
+        }
+    }
+
+    // Caso general: si el backend ya nos dio el texto resultante
+    // (con shift/IME aplicados), eso es lo correcto para mandar.
+    if let Some(text) = &ev.text {
+        return text.as_bytes().to_vec();
+    }
+    Vec::new()
+}
+
+fn named_to_bytes(k: NamedKey) -> Vec<u8> {
+    match k {
+        // PTYs en modo raw esperan CR para Enter; el driver convierte a LF.
+        NamedKey::Enter => b"\r".to_vec(),
+        // Backspace moderno = DEL (0x7f). Los shells lo entienden mejor
+        // que 0x08, que se reserva para ^H en TUIs viejos.
+        NamedKey::Backspace => vec![0x7f],
+        NamedKey::Tab => b"\t".to_vec(),
+        NamedKey::Escape => vec![0x1b],
+        NamedKey::ArrowUp => b"\x1b[A".to_vec(),
+        NamedKey::ArrowDown => b"\x1b[B".to_vec(),
+        NamedKey::ArrowRight => b"\x1b[C".to_vec(),
+        NamedKey::ArrowLeft => b"\x1b[D".to_vec(),
+        NamedKey::Home => b"\x1b[H".to_vec(),
+        NamedKey::End => b"\x1b[F".to_vec(),
+        NamedKey::PageUp => b"\x1b[5~".to_vec(),
+        NamedKey::PageDown => b"\x1b[6~".to_vec(),
+        NamedKey::Delete => b"\x1b[3~".to_vec(),
+        NamedKey::Insert => b"\x1b[2~".to_vec(),
+        NamedKey::F1 => b"\x1bOP".to_vec(),
+        NamedKey::F2 => b"\x1bOQ".to_vec(),
+        NamedKey::F3 => b"\x1bOR".to_vec(),
+        NamedKey::F4 => b"\x1bOS".to_vec(),
+        NamedKey::F5 => b"\x1b[15~".to_vec(),
+        NamedKey::F6 => b"\x1b[17~".to_vec(),
+        NamedKey::F7 => b"\x1b[18~".to_vec(),
+        NamedKey::F8 => b"\x1b[19~".to_vec(),
+        NamedKey::F9 => b"\x1b[20~".to_vec(),
+        NamedKey::F10 => b"\x1b[21~".to_vec(),
+        NamedKey::F11 => b"\x1b[23~".to_vec(),
+        NamedKey::F12 => b"\x1b[24~".to_vec(),
+        _ => Vec::new(),
+    }
+}
+
+/// Ctrl+letter → byte de control ASCII (Ctrl+A=1, Ctrl+B=2, ..., Ctrl+Z=26).
+/// Maneja también Ctrl+@ (NUL), Ctrl+[ (ESC), Ctrl+\\ (FS), Ctrl+] (GS),
+/// Ctrl+^ (RS), Ctrl+_ (US), Ctrl+? (DEL).
+fn ctrl_byte(s: &str) -> Option<u8> {
+    let c = s.chars().next()?;
+    match c {
+        'a'..='z' => Some((c as u8) - b'a' + 1),
+        'A'..='Z' => Some((c as u8) - b'A' + 1),
+        '@' => Some(0),
+        '[' => Some(0x1b),
+        '\\' => Some(0x1c),
+        ']' => Some(0x1d),
+        '^' => Some(0x1e),
+        '_' => Some(0x1f),
+        '?' => Some(0x7f),
+        ' ' => Some(0), // Ctrl+Space = NUL, convención xterm
+        _ => None,
+    }
+}
+
+// =====================================================================
+// View
+// =====================================================================
+
+/// Paleta visual del terminal. Monospace; fondo más oscuro que el
+/// panel general para que el terminal "viva" visualmente.
+#[derive(Debug, Clone)]
+pub struct ShumaTermPalette {
+    pub bg_panel: llimphi_ui::llimphi_raster::peniko::Color,
+    pub bg_header: llimphi_ui::llimphi_raster::peniko::Color,
+    pub fg_text: llimphi_ui::llimphi_raster::peniko::Color,
+    pub fg_muted: llimphi_ui::llimphi_raster::peniko::Color,
+}
+
+impl ShumaTermPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_panel: t.bg_panel_alt,
+            bg_header: t.bg_panel,
+            fg_text: t.fg_text,
+            fg_muted: t.fg_muted,
+        }
+    }
+}
+
+const HEADER_H: f32 = 18.0;
+const ROW_H: f32 = 14.0;
+const CHAR_W: f32 = 7.5;
+
+/// Render del panel. `to_host` mapea cada `ShumaTermMsg` al `Msg` del
+/// host. `height_px` es la altura total del panel — el módulo divide
+/// entre header + grid.
+pub fn view<HostMsg, F>(
+    state: &ShumaTermState,
+    palette: &ShumaTermPalette,
+    height_px: f32,
+    to_host: F,
+) -> View<HostMsg>
+where
+    HostMsg: Clone + 'static,
+    F: Fn(ShumaTermMsg) -> HostMsg + Copy + 'static,
+{
+    let _ = to_host; // v0 no monta eventos puntuales sobre el grid
+
+    let header_text = match state.exit_code {
+        Some(code) => format!(
+            "shuma · {} · exit {code} · Ctrl+Shift+W cierra",
+            state.cwd
+        ),
+        None => format!(
+            "shuma · {} · {}×{} · Ctrl+Shift+W cierra · Esc envía al shell",
+            state.cwd, state.cols, state.rows
+        ),
+    };
+
+    let header = View::new(Style {
+        size: Size { width: percent(1.0_f32), height: length(HEADER_H) },
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_header)
+    .text_aligned(header_text, 10.0, palette.fg_muted, Alignment::Start);
+
+    let contents = state.parser.screen().contents();
+    let grid_h = (height_px - HEADER_H).max(0.0);
+    let max_rows = ((grid_h / ROW_H) as usize).max(1);
+
+    // Tomamos las últimas `max_rows` líneas — preferimos mostrar el
+    // tail (donde está el cursor / prompt) si el render no alcanza
+    // para toda la pantalla.
+    let all_lines: Vec<&str> = contents.split('\n').collect();
+    let start = all_lines.len().saturating_sub(max_rows);
+    let mut rows: Vec<View<HostMsg>> = Vec::with_capacity(max_rows);
+    for line in &all_lines[start..] {
+        rows.push(
+            View::new(Style {
+                size: Size { width: percent(1.0_f32), height: length(ROW_H) },
+                padding: Rect {
+                    left: length(8.0_f32),
+                    right: length(8.0_f32),
+                    top: length(0.0_f32),
+                    bottom: length(0.0_f32),
+                },
+                align_items: Some(AlignItems::Center),
+                flex_shrink: 0.0,
+                ..Default::default()
+            })
+            .fill(palette.bg_panel)
+            .text_aligned((*line).to_string(), 11.0, palette.fg_text, Alignment::Start),
+        );
+    }
+    // Si el render quedó corto, rellenamos con líneas vacías para que el
+    // panel mantenga su altura visual.
+    while rows.len() < max_rows {
+        rows.push(
+            View::new(Style {
+                size: Size { width: percent(1.0_f32), height: length(ROW_H) },
+                flex_shrink: 0.0,
+                ..Default::default()
+            })
+            .fill(palette.bg_panel),
+        );
+    }
+
+    let mut children: Vec<View<HostMsg>> = Vec::with_capacity(1 + rows.len());
+    children.push(header);
+    children.extend(rows);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size { width: percent(1.0_f32), height: length(height_px) },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .children(children)
+}
+
+/// Estimación heurística de cuántas columnas caben en `width_px` con la
+/// fuente actual. Útil para que el host calcule el tamaño antes de
+/// llamar a [`spawn_with`].
+pub fn cols_for_width(width_px: f32) -> u16 {
+    ((width_px / CHAR_W).floor() as u16).max(20)
+}
+
+/// Idem para filas a partir de la altura disponible del panel
+/// (descontando el header).
+pub fn rows_for_height(height_px: f32) -> u16 {
+    (((height_px - HEADER_H) / ROW_H).floor() as u16).max(5)
+}
diff --git a/modules/shuma-term/tests/smoke.rs b/modules/shuma-term/tests/smoke.rs
new file mode 100644
index 0000000..1200a6c
--- /dev/null
+++ b/modules/shuma-term/tests/smoke.rs
@@ -0,0 +1,157 @@
+//! Smoke test del terminal: spawnea un shell, le tipea `echo hola`,
+//! drena hasta ver el output, y verifica que el contenido del screen
+//! contenga "hola". Cierre con SIGTERM se valida por el Drop.
+//!
+//! Requiere `/bin/sh` y un sistema Linux real (no corre en sandbox
+//! puro). Es razonable porque shuma-exec ya lo asume.
+
+use std::time::{Duration, Instant};
+
+use llimphi_module_shuma_term::{self as term, ShumaTermAction, ShumaTermMsg};
+
+#[test]
+fn echo_a_traves_del_pty_aparece_en_el_screen() {
+    let mut state = term::spawn_with(
+        "/tmp".to_string(),
+        "/bin/sh".to_string(),
+        Vec::new(),
+        80,
+        24,
+    );
+
+    // El shell escribe su prompt al arrancar; lo drenamos sin asumir
+    // su contenido (cambia por distro).
+    spin_drain(&mut state, Duration::from_millis(200));
+
+    // Tipeamos el comando. Sin Llimphi alrededor llamamos a write_input
+    // directamente — el módulo permite hacerlo via KeyInput, pero
+    // construir KeyEvents acá es ruido para este test.
+    write_raw(&mut state, b"echo hola_del_test\n");
+
+    // Esperamos hasta 2s a que el output llegue al screen.
+    let deadline = Instant::now() + Duration::from_secs(2);
+    let mut visto = false;
+    while Instant::now() < deadline {
+        spin_drain(&mut state, Duration::from_millis(50));
+        if state.screen_contents().contains("hola_del_test") {
+            visto = true;
+            break;
+        }
+    }
+    assert!(
+        visto,
+        "esperaba ver 'hola_del_test' en el screen, contenido actual:\n{}",
+        state.screen_contents()
+    );
+}
+
+#[test]
+fn ctrl_shift_w_emite_action_close_sin_pasar_al_pty() {
+    use llimphi_ui::{Key, KeyEvent, KeyState, Modifiers};
+
+    let mut state = term::spawn_with(
+        "/tmp".to_string(),
+        "/bin/sh".to_string(),
+        Vec::new(),
+        80,
+        24,
+    );
+    spin_drain(&mut state, Duration::from_millis(100));
+
+    let ev = KeyEvent {
+        key: Key::Character("w".into()),
+        state: KeyState::Pressed,
+        text: Some("w".into()),
+        modifiers: Modifiers { ctrl: true, shift: true, ..Modifiers::default() },
+        repeat: false,
+    };
+    let action = term::apply(&mut state, ShumaTermMsg::KeyInput(ev));
+    assert_eq!(action, ShumaTermAction::Close);
+}
+
+#[test]
+fn key_to_bytes_mapea_los_casos_canonicos() {
+    use llimphi_ui::{Key, KeyEvent, KeyState, Modifiers, NamedKey};
+
+    let mk = |key: Key, mods: Modifiers, text: Option<&str>| KeyEvent {
+        key,
+        state: KeyState::Pressed,
+        text: text.map(|s| s.to_string()),
+        modifiers: mods,
+        repeat: false,
+    };
+
+    // Enter → CR (no LF — el driver del PTY lo expande).
+    assert_eq!(
+        term::key_to_bytes(&mk(Key::Named(NamedKey::Enter), Modifiers::default(), None)),
+        b"\r"
+    );
+    // Backspace → DEL.
+    assert_eq!(
+        term::key_to_bytes(&mk(
+            Key::Named(NamedKey::Backspace),
+            Modifiers::default(),
+            None
+        )),
+        vec![0x7f]
+    );
+    // ArrowUp → CSI A.
+    assert_eq!(
+        term::key_to_bytes(&mk(
+            Key::Named(NamedKey::ArrowUp),
+            Modifiers::default(),
+            None
+        )),
+        b"\x1b[A"
+    );
+    // Ctrl+C → 0x03.
+    let ctrl = Modifiers { ctrl: true, ..Modifiers::default() };
+    assert_eq!(
+        term::key_to_bytes(&mk(Key::Character("c".into()), ctrl, Some("c"))),
+        vec![0x03]
+    );
+    // Texto plano (con shift aplicado por el backend) → ese mismo texto.
+    assert_eq!(
+        term::key_to_bytes(&mk(Key::Character("A".into()), Modifiers::default(), Some("A"))),
+        b"A"
+    );
+    // Alt+x → ESC + x.
+    let alt = Modifiers { alt: true, ..Modifiers::default() };
+    assert_eq!(
+        term::key_to_bytes(&mk(Key::Character("x".into()), alt, Some("x"))),
+        vec![0x1b, b'x']
+    );
+}
+
+// ---------------------------------------------------------------------
+// helpers
+// ---------------------------------------------------------------------
+
+/// Pequeño polling: dispara Tick varias veces durante `total` para que
+/// el módulo drene los bytes que el reader thread haya emitido.
+fn spin_drain(state: &mut llimphi_module_shuma_term::ShumaTermState, total: Duration) {
+    let deadline = Instant::now() + total;
+    while Instant::now() < deadline {
+        term::apply(state, ShumaTermMsg::Tick);
+        std::thread::sleep(Duration::from_millis(10));
+    }
+}
+
+/// Atajo: enviar bytes crudos al PTY sin construir un KeyEvent. Usa la
+/// API pública via un truco — convertimos a un KeyEvent "texto" para
+/// evitar exponer write_input crudo en el contrato.
+fn write_raw(state: &mut llimphi_module_shuma_term::ShumaTermState, bytes: &[u8]) {
+    use llimphi_ui::{Key, KeyEvent, KeyState, Modifiers};
+    // Texto entero (incluyendo el LF) en un solo KeyInput. apply() lo
+    // copia tal cual al PTY via la rama `text`.
+    let s = std::str::from_utf8(bytes).expect("test usa ascii");
+    let ev = KeyEvent {
+        // Key::Character vacío para que no entremos por la rama ctrl/alt.
+        key: Key::Character("".into()),
+        state: KeyState::Pressed,
+        text: Some(s.to_string()),
+        modifiers: Modifiers::default(),
+        repeat: false,
+    };
+    term::apply(state, ShumaTermMsg::KeyInput(ev));
+}
diff --git a/modules/symbol-outline/Cargo.toml b/modules/symbol-outline/Cargo.toml
new file mode 100644
index 0000000..88d6866
--- /dev/null
+++ b/modules/symbol-outline/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "llimphi-module-symbol-outline"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-module-symbol-outline — outline del documento (funciones, structs, métodos) navegable con fuzzy filter. Módulo Llimphi reutilizable: el host le pasa un Vec<SymbolItem> y el módulo emite GoTo(line, col). No depende de LSP — el host puede poblarlo desde cualquier fuente (tree-sitter, parser propio, LSP)."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-text-input = { workspace = true }
+nucleo-matcher = { workspace = true }
diff --git a/modules/symbol-outline/LEEME.md b/modules/symbol-outline/LEEME.md
new file mode 100644
index 0000000..9b7d8e2
--- /dev/null
+++ b/modules/symbol-outline/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-module-symbol-outline
+
+> Outline de símbolos LSP de [llimphi](../../README.md).
+
+Vista jerárquica de los símbolos del archivo activo (funciones, structs, módulos, ...) — alimentada por el LSP servidor del lenguaje. Click salta al símbolo.
diff --git a/modules/symbol-outline/README.md b/modules/symbol-outline/README.md
new file mode 100644
index 0000000..9b71192
--- /dev/null
+++ b/modules/symbol-outline/README.md
@@ -0,0 +1,5 @@
+# llimphi-module-symbol-outline
+
+> LSP symbol outline of [llimphi](../../README.md).
+
+Hierarchical view of the active file's symbols (functions, structs, modules, ...) — fed by the language's LSP server. Click jumps to the symbol.
diff --git a/modules/symbol-outline/src/lib.rs b/modules/symbol-outline/src/lib.rs
new file mode 100644
index 0000000..5e5b02d
--- /dev/null
+++ b/modules/symbol-outline/src/lib.rs
@@ -0,0 +1,352 @@
+//! `llimphi-module-symbol-outline` — outline navegable de símbolos.
+//!
+//! Equivalente al "Outline" panel de VS Code o "Structure" de JetBrains.
+//! El host arma una lista plana de [`SymbolItem`] (funciones, structs,
+//! métodos, con su posición en el buffer) y el módulo presenta un
+//! overlay con input + lista rankeada por fuzzy. Cuando el user pica
+//! uno, el módulo emite [`OutlineAction::GoTo`] y el host mueve el caret.
+//!
+//! El módulo es **agnóstico de la fuente de símbolos**. El host puede
+//! poblarlo desde:
+//!
+//! - LSP (`textDocument/documentSymbol`) — fuente canónica.
+//! - tree-sitter — sirve para archivos sin LSP.
+//! - parser propio del lenguaje del host.
+//! - una lista hardcodeada (en una app no-código que tenga "secciones").
+//!
+//! Sigue el contrato Llimphi de `docs/MODULES.md`:
+//! `State + Msg + Action + apply/on_key/open_shortcut/view + Palette`.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{Key, KeyEvent, KeyState, NamedKey, View};
+use llimphi_widget_text_input::{text_input_view, TextInputPalette, TextInputState};
+
+/// Capabilities que aporta este módulo al host.
+pub const CAPABILITIES: &[&str] = &["editor.symbol-outline"];
+
+pub const MAX_RESULTS: usize = 500;
+
+const BAR_H: f32 = 320.0;
+const ROW_H: f32 = 20.0;
+const MAX_VISIBLE: usize = 12;
+
+/// Un símbolo del documento. Los campos son convencionales:
+///
+/// - `name`: nombre visible (`foo`, `MyStruct`, `parse_line`).
+/// - `kind`: etiqueta corta del tipo de símbolo (`fn`, `struct`, `method`,
+///   `mod`, `const`, …). El módulo la pinta sin interpretar — el host
+///   elige el vocabulario (LSP usa `SymbolKind` numérico; el host
+///   convierte a string).
+/// - `line`, `col`: posición 0-based en el buffer. El módulo no toca
+///   coordenadas — sólo las devuelve en `GoTo`.
+/// - `container`: nombre del símbolo padre (`Some("MyStruct")` para
+///   un método). Visible en el render como anotación a la derecha;
+///   también participa del fuzzy match para que tipear el nombre de
+///   la clase filtre sus métodos.
+/// - `depth`: profundidad jerárquica para indentación visual. El
+///   módulo asume que la lista ya viene ordenada (parent antes que
+///   children, en orden de aparición).
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct SymbolItem {
+    pub name: String,
+    pub kind: String,
+    pub line: usize,
+    pub col: usize,
+    pub container: Option<String>,
+    pub depth: u32,
+}
+
+/// Estado interno. `results` son índices al slice de symbols que pasa
+/// el host: el módulo no copia, sólo guarda índices.
+pub struct OutlineState {
+    pub input: TextInputState,
+    pub results: Vec<usize>,
+    pub selected: usize,
+}
+
+impl Default for OutlineState {
+    fn default() -> Self {
+        Self::new_empty()
+    }
+}
+
+impl OutlineState {
+    pub fn new_empty() -> Self {
+        Self {
+            input: TextInputState::new(),
+            results: Vec::new(),
+            selected: 0,
+        }
+    }
+
+    /// Crea un outline poblado con todos los símbolos sin filtro.
+    pub fn new(items: &[SymbolItem]) -> Self {
+        let mut s = Self::new_empty();
+        refilter(&mut s, items);
+        s
+    }
+}
+
+/// Vocabulario interno. El host lo wrapea en su Msg.
+#[derive(Clone)]
+pub enum OutlineMsg {
+    /// Símbolo conveniente que el host emite al detectar el shortcut.
+    /// El módulo no construye el state ni la lista él mismo.
+    Open,
+    Close,
+    KeyInput(KeyEvent),
+    Nav(i32),
+    /// Enter: salta al símbolo seleccionado.
+    Apply,
+}
+
+/// Efecto solicitado al host.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum OutlineAction {
+    None,
+    /// El host debería remover el state del modelo.
+    Close,
+    /// El host debería mover el caret a esta posición del buffer activo.
+    /// El módulo NO se cierra automáticamente — el host decide
+    /// (típicamente sí, para que la navegación sea "salta y mira").
+    GoTo { line: usize, col: usize },
+}
+
+/// Aplica un mensaje al estado.
+pub fn apply(
+    state: &mut OutlineState,
+    msg: OutlineMsg,
+    items: &[SymbolItem],
+) -> OutlineAction {
+    match msg {
+        OutlineMsg::Open => OutlineAction::None,
+        OutlineMsg::Close => OutlineAction::Close,
+        OutlineMsg::KeyInput(ev) => {
+            state.input.apply_key(&ev);
+            refilter(state, items);
+            OutlineAction::None
+        }
+        OutlineMsg::Nav(d) => {
+            let n = state.results.len() as i32;
+            if n > 0 {
+                state.selected = (state.selected as i32 + d).rem_euclid(n) as usize;
+            }
+            OutlineAction::None
+        }
+        OutlineMsg::Apply => {
+            let Some(&idx) = state.results.get(state.selected) else {
+                return OutlineAction::None;
+            };
+            let Some(it) = items.get(idx) else {
+                return OutlineAction::None;
+            };
+            OutlineAction::GoTo { line: it.line, col: it.col }
+        }
+    }
+}
+
+/// Routing de teclas cuando el outline está abierto.
+pub fn on_key(_state: &OutlineState, event: &KeyEvent) -> Option<OutlineMsg> {
+    if event.state != KeyState::Pressed {
+        return None;
+    }
+    Some(match &event.key {
+        Key::Named(NamedKey::Escape) => OutlineMsg::Close,
+        Key::Named(NamedKey::Enter) => OutlineMsg::Apply,
+        Key::Named(NamedKey::ArrowDown) => OutlineMsg::Nav(1),
+        Key::Named(NamedKey::ArrowUp) => OutlineMsg::Nav(-1),
+        _ => OutlineMsg::KeyInput(event.clone()),
+    })
+}
+
+/// El atajo recomendado: **Ctrl+Shift+O**, igual que VS Code.
+pub fn open_shortcut(event: &KeyEvent) -> bool {
+    event.state == KeyState::Pressed
+        && event.modifiers.ctrl
+        && event.modifiers.shift
+        && matches!(&event.key, Key::Character(s) if s.eq_ignore_ascii_case("o"))
+}
+
+/// Recalcula `state.results` con fuzzy match sobre `"name kind container"`.
+/// Query vacío = lista completa. Cap: [`MAX_RESULTS`].
+pub fn refilter(state: &mut OutlineState, items: &[SymbolItem]) {
+    let q = state.input.text();
+    if q.trim().is_empty() {
+        state.results = (0..items.len().min(MAX_RESULTS)).collect();
+        state.selected = 0;
+        return;
+    }
+    use nucleo_matcher::{
+        pattern::{CaseMatching, Normalization, Pattern},
+        Config, Matcher, Utf32Str,
+    };
+    let mut matcher = Matcher::new(Config::DEFAULT);
+    let pat = Pattern::parse(&q, CaseMatching::Smart, Normalization::Smart);
+    let mut scored: Vec<(u32, usize)> = Vec::new();
+    let mut buf = Vec::new();
+    for (i, it) in items.iter().enumerate() {
+        let hay_str = match &it.container {
+            Some(c) => format!("{} {} {c}", it.name, it.kind),
+            None => format!("{} {}", it.name, it.kind),
+        };
+        buf.clear();
+        let hay = Utf32Str::new(&hay_str, &mut buf);
+        if let Some(score) = pat.score(hay, &mut matcher) {
+            scored.push((score, i));
+        }
+    }
+    scored.sort_by(|a, b| b.0.cmp(&a.0).then(a.1.cmp(&b.1)));
+    scored.truncate(MAX_RESULTS);
+    state.results = scored.into_iter().map(|(_, i)| i).collect();
+    state.selected = 0;
+}
+
+/// Paleta visual.
+#[derive(Debug, Clone)]
+pub struct OutlinePalette {
+    pub bg_panel: Color,
+    pub bg_header: Color,
+    pub bg_selected: Color,
+    pub fg_text: Color,
+    pub fg_muted: Color,
+    theme: llimphi_theme::Theme,
+}
+
+impl OutlinePalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_panel: t.bg_panel,
+            bg_header: t.bg_panel_alt,
+            bg_selected: t.bg_selected,
+            fg_text: t.fg_text,
+            fg_muted: t.fg_muted,
+            theme: t.clone(),
+        }
+    }
+}
+
+/// Render del overlay. `to_host` mapea cada `OutlineMsg` al `Msg` de la
+/// app.
+pub fn view<HostMsg, F>(
+    state: &OutlineState,
+    items: &[SymbolItem],
+    palette: &OutlinePalette,
+    to_host: F,
+) -> View<HostMsg>
+where
+    HostMsg: Clone + 'static,
+    F: Fn(OutlineMsg) -> HostMsg + Copy + 'static,
+{
+    let header = if items.is_empty() {
+        "outline · sin símbolos · Esc cierra".to_string()
+    } else if state.results.is_empty() {
+        format!("outline · sin matches · {} símbolos · Esc cierra", items.len())
+    } else {
+        format!(
+            "outline · {} / {} · ↓↑ navega · Enter salta · Esc cierra",
+            state.selected + 1,
+            state.results.len(),
+        )
+    };
+
+    let header_view = View::new(Style {
+        size: Size { width: percent(1.0_f32), height: length(18.0_f32) },
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_header)
+    .text_aligned(header, 10.0, palette.fg_muted, Alignment::Start);
+
+    let tp = TextInputPalette::from_theme(&palette.theme);
+    let input_view = View::new(Style {
+        size: Size { width: percent(1.0_f32), height: length(26.0_f32) },
+        padding: Rect {
+            left: length(6.0_f32),
+            right: length(6.0_f32),
+            top: length(2.0_f32),
+            bottom: length(2.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .children(vec![text_input_view(
+        &state.input,
+        "filtro: nombre del símbolo o clase…",
+        true,
+        &tp,
+        to_host(OutlineMsg::Open),
+    )]);
+
+    let visible_start = state.selected.saturating_sub(MAX_VISIBLE.saturating_sub(1));
+    let visible_end = (visible_start + MAX_VISIBLE).min(state.results.len());
+    let mut rows: Vec<View<HostMsg>> = Vec::with_capacity(MAX_VISIBLE);
+    for i in visible_start..visible_end {
+        let Some(&idx) = state.results.get(i) else { continue };
+        let Some(it) = items.get(idx) else { continue };
+        // Indentación visual por depth (sólo cuando no hay query — con
+        // query el orden ya vino del ranking y la jerarquía se pierde).
+        let indent = if state.input.text().trim().is_empty() {
+            "  ".repeat(it.depth as usize)
+        } else {
+            String::new()
+        };
+        let container_tag = match &it.container {
+            Some(c) if !c.is_empty() => format!("    in {c}"),
+            _ => String::new(),
+        };
+        let label = format!(
+            "{indent}{} {}    line {}{container_tag}",
+            it.kind,
+            it.name,
+            it.line + 1,
+        );
+        let selected = i == state.selected;
+        let bg = if selected { palette.bg_selected } else { palette.bg_panel };
+        let fg = if selected { palette.fg_text } else { palette.fg_muted };
+        rows.push(
+            View::new(Style {
+                size: Size { width: percent(1.0_f32), height: length(ROW_H) },
+                padding: Rect {
+                    left: length(10.0_f32),
+                    right: length(8.0_f32),
+                    top: length(0.0_f32),
+                    bottom: length(0.0_f32),
+                },
+                align_items: Some(AlignItems::Center),
+                flex_shrink: 0.0,
+                ..Default::default()
+            })
+            .fill(bg)
+            .text_aligned(label, 11.0, fg, Alignment::Start),
+        );
+    }
+
+    let mut children: Vec<View<HostMsg>> = Vec::with_capacity(2 + rows.len());
+    children.push(header_view);
+    children.push(input_view);
+    children.extend(rows);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size { width: percent(1.0_f32), height: length(BAR_H) },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .children(children)
+}
diff --git a/modules/symbol-outline/tests/smoke.rs b/modules/symbol-outline/tests/smoke.rs
new file mode 100644
index 0000000..c72686a
--- /dev/null
+++ b/modules/symbol-outline/tests/smoke.rs
@@ -0,0 +1,130 @@
+//! Smoke tests del fuzzy match y el routing de teclas. Sin backend
+//! gráfico — sólo `apply` + `refilter`.
+
+use llimphi_module_symbol_outline::{
+    self as outline, OutlineAction, OutlineMsg, OutlineState, SymbolItem,
+};
+use llimphi_ui::{Key, KeyEvent, KeyState, Modifiers};
+
+fn seed() -> Vec<SymbolItem> {
+    vec![
+        SymbolItem {
+            name: "Model".into(),
+            kind: "struct".into(),
+            line: 100,
+            col: 0,
+            container: None,
+            depth: 0,
+        },
+        SymbolItem {
+            name: "init".into(),
+            kind: "fn".into(),
+            line: 110,
+            col: 4,
+            container: Some("Model".into()),
+            depth: 1,
+        },
+        SymbolItem {
+            name: "update".into(),
+            kind: "fn".into(),
+            line: 200,
+            col: 4,
+            container: Some("Model".into()),
+            depth: 1,
+        },
+        SymbolItem {
+            name: "Renderer".into(),
+            kind: "struct".into(),
+            line: 300,
+            col: 0,
+            container: None,
+            depth: 0,
+        },
+        SymbolItem {
+            name: "draw".into(),
+            kind: "fn".into(),
+            line: 310,
+            col: 4,
+            container: Some("Renderer".into()),
+            depth: 1,
+        },
+    ]
+}
+
+fn key_char(c: &str) -> KeyEvent {
+    KeyEvent {
+        key: Key::Character(c.into()),
+        state: KeyState::Pressed,
+        text: Some(c.into()),
+        modifiers: Modifiers::default(),
+        repeat: false,
+    }
+}
+
+#[test]
+fn estado_vacio_lista_todos_los_simbolos() {
+    let items = seed();
+    let s = OutlineState::new(&items);
+    assert_eq!(s.results.len(), items.len());
+}
+
+#[test]
+fn fuzzy_match_filtra_por_nombre_de_clase_contenedora() {
+    // Tipear "render" debería traer `draw` (su container es "Renderer")
+    // gracias a que refilter incluye container en la haystack.
+    let items = seed();
+    let mut s = OutlineState::new(&items);
+    for ch in ["r", "e", "n", "d", "e", "r"] {
+        outline::apply(&mut s, OutlineMsg::KeyInput(key_char(ch)), &items);
+    }
+    let names: Vec<&str> = s.results.iter().map(|&i| items[i].name.as_str()).collect();
+    assert!(
+        names.contains(&"draw") || names.contains(&"Renderer"),
+        "esperaba draw o Renderer en {names:?}"
+    );
+}
+
+#[test]
+fn apply_emite_goto_con_line_col_del_item_seleccionado() {
+    let items = seed();
+    let mut s = OutlineState::new(&items);
+    // Filtrar "update".
+    for ch in ["u", "p", "d", "a", "t", "e"] {
+        outline::apply(&mut s, OutlineMsg::KeyInput(key_char(ch)), &items);
+    }
+    let action = outline::apply(&mut s, OutlineMsg::Apply, &items);
+    assert_eq!(action, OutlineAction::GoTo { line: 200, col: 4 });
+}
+
+#[test]
+fn nav_wrap_around() {
+    let items = seed();
+    let mut s = OutlineState::new(&items);
+    assert_eq!(s.selected, 0);
+    outline::apply(&mut s, OutlineMsg::Nav(-1), &items);
+    assert_eq!(s.selected, items.len() - 1);
+}
+
+#[test]
+fn open_shortcut_es_ctrl_shift_o() {
+    let mk = |ctrl: bool, shift: bool, c: &str| KeyEvent {
+        key: Key::Character(c.into()),
+        state: KeyState::Pressed,
+        text: Some(c.into()),
+        modifiers: Modifiers { ctrl, shift, ..Modifiers::default() },
+        repeat: false,
+    };
+    assert!(outline::open_shortcut(&mk(true, true, "o")));
+    assert!(outline::open_shortcut(&mk(true, true, "O")));
+    assert!(!outline::open_shortcut(&mk(true, false, "o")));
+    assert!(!outline::open_shortcut(&mk(false, true, "o")));
+}
+
+#[test]
+fn items_vacios_no_paniquean() {
+    let items: Vec<SymbolItem> = Vec::new();
+    let mut s = OutlineState::new(&items);
+    assert!(s.results.is_empty());
+    let action = outline::apply(&mut s, OutlineMsg::Apply, &items);
+    assert_eq!(action, OutlineAction::None);
+}
diff --git a/widgets/app-header/Cargo.toml b/widgets/app-header/Cargo.toml
new file mode 100644
index 0000000..ac9d061
--- /dev/null
+++ b/widgets/app-header/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-widget-app-header"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-app-header — tira superior estándar para apps Llimphi: label dinámico a la izquierda + slot de acciones opcional a la derecha. Análogo Llimphi al `nahual-widget-app-header` GPUI."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-panel = { workspace = true }
diff --git a/widgets/app-header/LEEME.md b/widgets/app-header/LEEME.md
new file mode 100644
index 0000000..98d8427
--- /dev/null
+++ b/widgets/app-header/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-app-header
+
+> Header común de app para [llimphi](../../README.md).
+
+Barra superior estándar: logo/icono · título · acciones a la derecha · breadcrumb opcional. Cualquier app del monorepo lo usa para coherencia visual.
diff --git a/widgets/app-header/README.md b/widgets/app-header/README.md
new file mode 100644
index 0000000..5786f78
--- /dev/null
+++ b/widgets/app-header/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-app-header
+
+> Common app header for [llimphi](../../README.md).
+
+Standard top bar: logo/icon · title · right-side actions · optional breadcrumb. Any monorepo app uses it for visual coherence.
diff --git a/widgets/app-header/src/lib.rs b/widgets/app-header/src/lib.rs
new file mode 100644
index 0000000..b8fd724
--- /dev/null
+++ b/widgets/app-header/src/lib.rs
@@ -0,0 +1,145 @@
+//! `llimphi-widget-app-header` — tira superior estándar de las apps.
+//!
+//! Reproduce el contrato del `nahual-widget-app-header` GPUI: label
+//! dinámico a la izquierda con `flex_grow`, slot a la derecha para
+//! acciones (theme switcher, botones de toolbar, etc.). bg = `bg_panel`,
+//! line-bottom como `border` del theme.
+//!
+//! Uso típico:
+//!
+//! ```ignore
+//! app_header(format!("Log: {} · {} entries", path, n), vec![], &palette)
+//! ```
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_widget_panel::{panel_signature_painter, PanelStyle};
+
+/// Paleta del header. Defaults desde el theme global.
+#[derive(Debug, Clone, Copy)]
+pub struct AppHeaderPalette {
+    pub bg: Color,
+    pub border_bottom: Color,
+    pub fg_text: Color,
+    pub height: f32,
+    /// Firma visual: gradient sutil + hairline accent en el top edge. Se
+    /// activa por defecto al construir desde theme. `None` cae al fill
+    /// plano de `bg` (modo back-compat para sitios que arman la palette
+    /// a mano sin theme).
+    pub signature: Option<PanelStyle>,
+}
+
+impl Default for AppHeaderPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl AppHeaderPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg: t.bg_panel,
+            border_bottom: t.border,
+            fg_text: t.fg_text,
+            height: 40.0,
+            signature: Some(PanelStyle {
+                radius: 0.0,
+                ..PanelStyle::from_theme(t)
+            }),
+        }
+    }
+}
+
+/// Header con `label` a la izquierda y `actions` a la derecha. `actions`
+/// es vacío para apps sin toolbar; viene como Vec para que la app meta
+/// botones / switcher / status pill / lo que necesite.
+pub fn app_header<Msg: Clone + 'static>(
+    label: impl Into<String>,
+    actions: Vec<View<Msg>>,
+    palette: &AppHeaderPalette,
+) -> View<Msg> {
+    let label_view = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(palette.height),
+        },
+        flex_grow: 1.0,
+        padding: Rect {
+            left: length(16.0_f32),
+            right: length(16.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .text_aligned(label.into(), 14.0, palette.fg_text, Alignment::Start);
+
+    let actions_view = View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: llimphi_ui::llimphi_layout::taffy::prelude::Dimension::auto(),
+            height: length(palette.height),
+        },
+        align_items: Some(AlignItems::Center),
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        gap: Size {
+            width: length(6.0_f32),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(actions);
+
+    // Bottom border: el header rellena `bg` (o aplica la firma si está
+    // habilitada), y debajo va una línea 1px de `border_bottom`. Lo
+    // metemos como un wrapper column.
+    let bar_style = Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(palette.height),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    };
+    let bar = match palette.signature {
+        Some(style) => View::new(bar_style)
+            .paint_with(panel_signature_painter(style))
+            .children(vec![label_view, actions_view]),
+        None => View::new(bar_style)
+            .fill(palette.bg)
+            .children(vec![label_view, actions_view]),
+    };
+
+    let underline = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.border_bottom);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(palette.height + 1.0),
+        },
+        ..Default::default()
+    })
+    .children(vec![bar, underline])
+}
diff --git a/widgets/avatar/Cargo.toml b/widgets/avatar/Cargo.toml
new file mode 100644
index 0000000..73fe6f7
--- /dev/null
+++ b/widgets/avatar/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-avatar"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-avatar — círculo de identidad con inicial sobre color generado del hash del nombre. Determinista (mismo nombre → mismo color) y tonal (paleta limitada para que no choque)."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/avatar/src/lib.rs b/widgets/avatar/src/lib.rs
new file mode 100644
index 0000000..b6a1622
--- /dev/null
+++ b/widgets/avatar/src/lib.rs
@@ -0,0 +1,116 @@
+//! `llimphi-widget-avatar` — círculo de identidad con inicial.
+//!
+//! Genera un avatar **determinista** de un nombre: el color de fondo
+//! viene de un hash del nombre, mapeado a una paleta limitada de 8
+//! tonos (para que dos usuarios distintos no acaben con colores que
+//! se confundan). La inicial es la primera letra del nombre (uppercase),
+//! pintada centrada en blanco-cálido.
+//!
+//! Útil para chats (ayni), authorship en pluma, presencia en
+//! herramientas colaborativas. Una sola función — sin state, sin
+//! animación, sin paleta configurable (la consistencia importa más
+//! que la personalización).
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, Size, Style},
+    AlignItems, JustifyContent,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+
+/// Construye el avatar de `name` con diámetro `size_px`.
+pub fn avatar_view<Msg: Clone + 'static>(name: &str, size_px: f32) -> View<Msg> {
+    let bg = color_for(name);
+    let initial = name
+        .chars()
+        .next()
+        .map(|c| c.to_uppercase().next().unwrap_or(c))
+        .unwrap_or('·');
+    let fg = Color::from_rgba8(248, 248, 250, 255);
+    let font = (size_px * 0.42).max(8.0);
+
+    View::new(Style {
+        size: Size {
+            width: length(size_px),
+            height: length(size_px),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(bg)
+    .radius((size_px * 0.5) as f64)
+    .paint_with(move |scene, _ts, rect| {
+        // Highlight radial en el cuadrante superior — el avatar se lee
+        // como esfera. paint_with corre entre el fill y la inicial, así
+        // que la luz se suma al color del nombre sin tapar el texto.
+        // Mismo patrón dot-badge / switch-thumb (P6/P7).
+        use llimphi_ui::llimphi_raster::kurbo::{Affine, Circle};
+        use llimphi_ui::llimphi_raster::peniko::Fill;
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+        let cx = (rect.x + rect.w * 0.5) as f64;
+        let cy = (rect.y + rect.h * 0.30) as f64;
+        let r = (rect.w as f64 * 0.18).max(1.0);
+        let highlight = Color::from_rgba8(255, 255, 255, 60);
+        scene.fill(
+            Fill::NonZero,
+            Affine::IDENTITY,
+            highlight,
+            None,
+            &Circle::new((cx, cy), r),
+        );
+    })
+    .text_aligned(initial.to_string(), font, fg, Alignment::Center)
+}
+
+/// Paleta tonal limitada — 8 colores HSL-ish elegidos para destacar
+/// sobre fondos oscuros sin ser estridentes.
+const PALETTE: &[Color] = &[
+    Color::from_rgba8(96, 130, 220, 255),  // azul
+    Color::from_rgba8(110, 180, 130, 255), // verde aurora
+    Color::from_rgba8(220, 140, 80, 255),  // naranja sunset
+    Color::from_rgba8(160, 110, 220, 255), // púrpura
+    Color::from_rgba8(80, 180, 180, 255),  // aqua
+    Color::from_rgba8(220, 120, 160, 255), // rosa
+    Color::from_rgba8(180, 170, 90, 255),  // mostaza
+    Color::from_rgba8(130, 150, 175, 255), // gris-azul
+];
+
+/// Hash FNV-1a simple sobre los bytes del nombre, mod paleta. No
+/// requiere crypto — sólo necesitamos que mismo input dé mismo color.
+fn color_for(name: &str) -> Color {
+    let mut h: u32 = 0x811c9dc5;
+    for b in name.bytes() {
+        h ^= b as u32;
+        h = h.wrapping_mul(0x01000193);
+    }
+    PALETTE[(h as usize) % PALETTE.len()]
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn color_for_is_deterministic() {
+        assert_eq!(color_for("sergio").components, color_for("sergio").components);
+        assert_eq!(color_for("calcetin").components, color_for("calcetin").components);
+    }
+
+    #[test]
+    fn different_names_can_have_different_colors() {
+        let names = ["a", "b", "c", "d", "e", "f", "g", "h"];
+        let colors: Vec<_> = names.iter().map(|n| color_for(n)).collect();
+        // Al menos 2 colores distintos en 8 nombres — el hash es trivial,
+        // colisiones esperadas, no garantizamos 8 distintos.
+        let unique: std::collections::HashSet<_> =
+            colors.iter().map(|c| c.components.map(|x| (x * 255.0) as u8)).collect();
+        assert!(unique.len() >= 2);
+    }
+}
diff --git a/widgets/badge/Cargo.toml b/widgets/badge/Cargo.toml
new file mode 100644
index 0000000..f1eefb5
--- /dev/null
+++ b/widgets/badge/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-badge"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-badge — chip pequeño (count o dot) para notificaciones, contadores, estado de conexión. Cuatro variants semánticas."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/badge/src/lib.rs b/widgets/badge/src/lib.rs
new file mode 100644
index 0000000..7586687
--- /dev/null
+++ b/widgets/badge/src/lib.rs
@@ -0,0 +1,136 @@
+//! `llimphi-widget-badge` — chip pequeño para conteo o estado.
+//!
+//! Dos formas:
+//! - `count_badge_view(n, kind)` — chip ovalado con número adentro
+//!   ("3", "12", "99+"). Para notificaciones, items sin leer, etc.
+//! - `dot_badge_view(kind)` — círculo de 8px sin contenido. Para
+//!   estado de conexión (online/offline/idle) o "hay algo nuevo".
+//!
+//! Cuatro `BadgeKind` con paleta semántica (Info / Success / Warning
+//! / Error / Neutral) — los colores no cambian con el theme para
+//! mantener la consistencia semántica.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum BadgeKind {
+    Info,
+    Success,
+    Warning,
+    Error,
+    Neutral,
+}
+
+impl BadgeKind {
+    pub fn bg(self) -> Color {
+        match self {
+            BadgeKind::Info => Color::from_rgba8(60, 130, 220, 255),
+            BadgeKind::Success => Color::from_rgba8(70, 180, 110, 255),
+            BadgeKind::Warning => Color::from_rgba8(220, 160, 40, 255),
+            BadgeKind::Error => Color::from_rgba8(220, 80, 80, 255),
+            BadgeKind::Neutral => Color::from_rgba8(120, 130, 150, 255),
+        }
+    }
+    pub fn fg(self) -> Color {
+        // Texto siempre blanco-cálido sobre los colores sólidos del bg.
+        Color::from_rgba8(248, 248, 250, 255)
+    }
+}
+
+const BADGE_H: f32 = 16.0;
+const FONT: f32 = 10.0;
+const DOT_R: f32 = 4.0; // dot diameter = 8
+
+/// Chip con número. Si `count >= 100`, muestra "99+".
+pub fn count_badge_view<Msg: Clone + 'static>(count: u32, kind: BadgeKind) -> View<Msg> {
+    let text = if count >= 100 { "99+".to_string() } else { count.to_string() };
+    // Ancho proporcional al texto, con padding generoso.
+    let w = (text.chars().count() as f32 * 6.5 + 10.0).max(BADGE_H);
+    let badge_radius = (BADGE_H * 0.5) as f64;
+
+    View::new(Style {
+        size: Size {
+            width: length(w),
+            height: length(BADGE_H),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        padding: Rect {
+            left: length(5.0_f32),
+            right: length(5.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(kind.bg())
+    .radius(badge_radius)
+    .paint_with(move |scene, _ts, rect| {
+        // Gloss superior: blanco alpha 35 → 0 sobre la mitad de arriba.
+        // Da volumen de pill — el chip se lee como una superficie con
+        // luz cayendo, no como un rect plano. Match: button/splash —
+        // misma firma vertical descendente.
+        use llimphi_ui::llimphi_raster::kurbo::{Affine, Point, RoundedRect};
+        use llimphi_ui::llimphi_raster::peniko::{Fill, Gradient};
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+        let x0 = rect.x as f64;
+        let y0 = rect.y as f64;
+        let x1 = (rect.x + rect.w) as f64;
+        let y1 = (rect.y + rect.h) as f64;
+        let y_mid = y0 + (y1 - y0) * 0.5;
+        let rr = RoundedRect::new(x0, y0, x1, y1, badge_radius);
+        let top = Color::from_rgba8(255, 255, 255, 35);
+        let bot = Color::from_rgba8(255, 255, 255, 0);
+        let gradient = Gradient::new_linear(Point::new(x0, y0), Point::new(x0, y_mid))
+            .with_stops([top, bot].as_slice());
+        scene.fill(Fill::NonZero, Affine::IDENTITY, &gradient, None, &rr);
+    })
+    .text_aligned(text, FONT, kind.fg(), Alignment::Center)
+}
+
+/// Dot sin contenido — sólo color.
+pub fn dot_badge_view<Msg: Clone + 'static>(kind: BadgeKind) -> View<Msg> {
+    let dot_radius = DOT_R as f64;
+    View::new(Style {
+        size: Size {
+            width: length(DOT_R * 2.0),
+            height: length(DOT_R * 2.0),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(kind.bg())
+    .radius(dot_radius)
+    .paint_with(move |scene, _ts, rect| {
+        // Highlight radial chiquito en el cuadrante superior — lectura
+        // de esfera, no de círculo plano. El dot es 8px; el highlight
+        // ocupa ~3px centrado a 1/3 del top.
+        use llimphi_ui::llimphi_raster::kurbo::{Affine, Circle};
+        use llimphi_ui::llimphi_raster::peniko::Fill;
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+        let cx = (rect.x + rect.w * 0.5) as f64;
+        let cy = (rect.y + rect.h * 0.33) as f64;
+        let r = (rect.w as f64 * 0.18).max(1.0);
+        let highlight = Color::from_rgba8(255, 255, 255, 90);
+        scene.fill(
+            Fill::NonZero,
+            Affine::IDENTITY,
+            highlight,
+            None,
+            &Circle::new((cx, cy), r),
+        );
+    })
+}
diff --git a/widgets/banner/Cargo.toml b/widgets/banner/Cargo.toml
new file mode 100644
index 0000000..4ac2561
--- /dev/null
+++ b/widgets/banner/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "llimphi-widget-banner"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-banner — tiras horizontales de status (Info/Success/Warning/Error). Colores semánticos hardcoded por severidad — no dependen del theme. Análogo Llimphi al `nahual-widget-banner` GPUI."
+
+[dependencies]
+llimphi-ui = { workspace = true }
diff --git a/widgets/banner/LEEME.md b/widgets/banner/LEEME.md
new file mode 100644
index 0000000..14734a8
--- /dev/null
+++ b/widgets/banner/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-banner
+
+> Banner / alerts para [llimphi](../../README.md).
+
+Mensaje destacado al tope de la vista: info / warning / error / success. Auto-dismiss configurable.
diff --git a/widgets/banner/README.md b/widgets/banner/README.md
new file mode 100644
index 0000000..942f338
--- /dev/null
+++ b/widgets/banner/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-banner
+
+> Banner / alerts for [llimphi](../../README.md).
+
+Prominent message at the top of the view: info / warning / error / success. Configurable auto-dismiss.
diff --git a/widgets/banner/src/lib.rs b/widgets/banner/src/lib.rs
new file mode 100644
index 0000000..406eb8b
--- /dev/null
+++ b/widgets/banner/src/lib.rs
@@ -0,0 +1,109 @@
+//! `llimphi-widget-banner` — tiras horizontales de status.
+//!
+//! Cuatro variants con paleta consistente entre apps:
+//!
+//! - [`BannerKind::Info`] — azul tenue, mensajes neutros.
+//! - [`BannerKind::Success`] — verde, confirmaciones de op exitosa.
+//! - [`BannerKind::Warning`] — amber, llamadas de atención.
+//! - [`BannerKind::Error`] — rojo, errores fatales o de carga.
+//!
+//! Análogo Llimphi al `nahual-widget-banner` GPUI. Los colores son
+//! **semánticos** y no cambian con el theme (un Error en dark y en
+//! light tiene que seguir leyéndose como rojo).
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+
+/// Severidad / tono del banner.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum BannerKind {
+    Info,
+    Success,
+    Warning,
+    Error,
+}
+
+impl BannerKind {
+    pub fn bg(self) -> Color {
+        match self {
+            BannerKind::Info => Color::from_rgba8(0x1d, 0x2a, 0x3a, 0xff),
+            BannerKind::Success => Color::from_rgba8(0x2d, 0x3a, 0x2a, 0xff),
+            BannerKind::Warning => Color::from_rgba8(0x4a, 0x3a, 0x1a, 0xff),
+            BannerKind::Error => Color::from_rgba8(0x4a, 0x20, 0x20, 0xff),
+        }
+    }
+
+    pub fn fg(self) -> Color {
+        match self {
+            BannerKind::Info => Color::from_rgba8(0xc0, 0xd0, 0xe0, 0xff),
+            BannerKind::Success => Color::from_rgba8(0xc0, 0xe0, 0xa0, 0xff),
+            BannerKind::Warning => Color::from_rgba8(0xf0, 0xe0, 0xa0, 0xff),
+            BannerKind::Error => Color::from_rgba8(0xff, 0xd0, 0xd0, 0xff),
+        }
+    }
+}
+
+/// Ancho del rail de severidad en el edge izquierdo. Mismo valor que
+/// `llimphi-widget-toast` — banner y toast son las versiones persistente
+/// y efímera del mismo lenguaje (P5 → P8).
+const RAIL_W: f32 = 3.0;
+
+/// Banner simple: una fila con `message` centrado verticalmente y
+/// alineado a la izquierda. bg/fg vienen del `kind`.
+pub fn banner_view<Msg: Clone + 'static>(
+    kind: BannerKind,
+    message: impl Into<String>,
+) -> View<Msg> {
+    use llimphi_ui::llimphi_layout::taffy::prelude::FlexDirection;
+
+    // Rail de severidad en el edge izquierdo — stripe del color fg
+    // semántico, visible al pasar el ojo. Mismo patrón que toast P5.
+    let rail = View::new(Style {
+        size: Size {
+            width: length(RAIL_W),
+            height: percent(1.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(kind.fg());
+
+    // Contenedor del mensaje: padding original ahora vive acá para que
+    // el rail pegue al borde sin offset y el texto arranque después.
+    let body = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        padding: Rect {
+            left: length(12.0_f32),
+            right: length(12.0_f32),
+            top: length(6.0_f32),
+            bottom: length(6.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .text_aligned(message.into(), 11.0, kind.fg(), Alignment::Start);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(28.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .fill(kind.bg())
+    .radius(3.0)
+    .clip(true)
+    .children(vec![rail, body])
+}
diff --git a/widgets/breadcrumb/Cargo.toml b/widgets/breadcrumb/Cargo.toml
new file mode 100644
index 0000000..d741fe3
--- /dev/null
+++ b/widgets/breadcrumb/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-widget-breadcrumb"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-breadcrumb — ruta navegable con separadores chevron. Cada segmento clicable salta a su nivel."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-icons = { workspace = true }
diff --git a/widgets/breadcrumb/src/lib.rs b/widgets/breadcrumb/src/lib.rs
new file mode 100644
index 0000000..f5d1c6a
--- /dev/null
+++ b/widgets/breadcrumb/src/lib.rs
@@ -0,0 +1,128 @@
+//! `llimphi-widget-breadcrumb` — ruta navegable con separadores chevron.
+//!
+//! Patrón clásico: `home › docs › 2026 › nota.md`. Cada segmento es
+//! clicable y emite un Msg con su índice. El último segmento (la
+//! "página actual") se renderiza con énfasis y sin click handler.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_icons::{icon_view, Icon};
+use llimphi_theme::Theme;
+
+/// Paleta del breadcrumb.
+#[derive(Debug, Clone, Copy)]
+pub struct BreadcrumbPalette {
+    pub fg_link: Color,
+    pub fg_current: Color,
+    pub fg_separator: Color,
+    pub bg_hover: Color,
+}
+
+impl BreadcrumbPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            fg_link: t.fg_muted,
+            fg_current: t.fg_text,
+            fg_separator: t.fg_placeholder,
+            bg_hover: t.bg_row_hover,
+        }
+    }
+}
+
+const SEG_H: f32 = 22.0;
+const SEG_PAD: f32 = 6.0;
+const FONT: f32 = 11.5;
+const SEP_BOX: f32 = 12.0;
+
+/// Construye el breadcrumb. `segments` son los labels visibles, en
+/// orden de raíz a hoja. `make_msg(i)` se llama al click en el
+/// segmento `i` (no se llama para el último — la "página actual").
+pub fn breadcrumb_view<Msg, F>(
+    segments: &[&str],
+    make_msg: F,
+    palette: &BreadcrumbPalette,
+) -> View<Msg>
+where
+    Msg: Clone + 'static,
+    F: Fn(usize) -> Msg,
+{
+    let last = segments.len().saturating_sub(1);
+    let mut children: Vec<View<Msg>> = Vec::with_capacity(segments.len() * 2);
+    for (i, &label) in segments.iter().enumerate() {
+        let is_current = i == last;
+        children.push(segment_view(
+            label,
+            is_current,
+            if is_current { None } else { Some(make_msg(i)) },
+            palette,
+        ));
+        if !is_current {
+            children.push(separator_view(palette));
+        }
+    }
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(SEG_H),
+        },
+        align_items: Some(AlignItems::Center),
+        gap: Size {
+            width: length(2.0_f32),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(children)
+}
+
+fn segment_view<Msg: Clone + 'static>(
+    label: &str,
+    is_current: bool,
+    msg: Option<Msg>,
+    palette: &BreadcrumbPalette,
+) -> View<Msg> {
+    let fg = if is_current { palette.fg_current } else { palette.fg_link };
+    let approx_w = label.chars().count() as f32 * 6.5 + SEG_PAD * 2.0;
+    let mut node = View::new(Style {
+        size: Size {
+            width: length(approx_w),
+            height: length(SEG_H),
+        },
+        align_items: Some(AlignItems::Center),
+        padding: Rect {
+            left: length(SEG_PAD),
+            right: length(SEG_PAD),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .text_aligned(label.to_string(), FONT, fg, Alignment::Center)
+    .radius(llimphi_theme::radius::XS);
+    if let Some(m) = msg {
+        node = node.hover_fill(palette.bg_hover).on_click(m);
+    }
+    node
+}
+
+fn separator_view<Msg: Clone + 'static>(palette: &BreadcrumbPalette) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: length(SEP_BOX),
+            height: length(SEP_BOX),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(vec![icon_view(Icon::ChevronRight, palette.fg_separator, 1.6)])
+}
diff --git a/widgets/button/Cargo.toml b/widgets/button/Cargo.toml
new file mode 100644
index 0000000..d0c41b3
--- /dev/null
+++ b/widgets/button/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-button"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-button — botón clicable con estado hover. Reusable entre apps Llimphi; cambia el bg cuando el cursor pasa por encima. Compuesto de `View::fill().hover_fill().on_click()` con una paleta tematizable."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/button/LEEME.md b/widgets/button/LEEME.md
new file mode 100644
index 0000000..c64508a
--- /dev/null
+++ b/widgets/button/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-button
+
+> Botón con variantes para [llimphi](../../README.md).
+
+Variantes: `primary`, `secondary`, `ghost`, `danger`. Estado hover/active/disabled. Soporta icono + label, o sólo icono.
diff --git a/widgets/button/README.md b/widgets/button/README.md
new file mode 100644
index 0000000..eb4b252
--- /dev/null
+++ b/widgets/button/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-button
+
+> Button with variants for [llimphi](../../README.md).
+
+Variants: `primary`, `secondary`, `ghost`, `danger`. Hover/active/disabled states. Supports icon + label, or icon-only.
diff --git a/widgets/button/examples/button_demo.rs b/widgets/button/examples/button_demo.rs
new file mode 100644
index 0000000..2e0381f
--- /dev/null
+++ b/widgets/button/examples/button_demo.rs
@@ -0,0 +1,136 @@
+//! Showcase de `llimphi-widget-button`: tres botones con hover.
+//!
+//! Corré con: `cargo run -p llimphi-widget-button --example showcase --release`.
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{App, Handle, View};
+use llimphi_widget_button::{button_styled, button_view, ButtonPalette};
+
+#[derive(Clone, Debug)]
+enum Msg {
+    A,
+    B,
+    C,
+}
+
+struct Model {
+    last: Option<Msg>,
+    counter: u32,
+}
+
+struct Showcase;
+
+impl App for Showcase {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · button showcase"
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        Model {
+            last: None,
+            counter: 0,
+        }
+    }
+
+    fn update(model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
+        let mut m = model;
+        m.counter += 1;
+        m.last = Some(msg);
+        m
+    }
+
+    fn view(model: &Model) -> View<Msg> {
+        let palette = ButtonPalette::default();
+        let warning = ButtonPalette {
+            bg: Color::from_rgba8(140, 70, 30, 255),
+            bg_hover: Color::from_rgba8(200, 100, 40, 255),
+            ..palette
+        };
+        let danger = ButtonPalette {
+            bg: Color::from_rgba8(150, 40, 40, 255),
+            bg_hover: Color::from_rgba8(220, 70, 70, 255),
+            ..palette
+        };
+
+        let a = button_view("acción A", &palette, Msg::A);
+        let b = button_view("acción B (warning)", &warning, Msg::B);
+        let c = button_styled(
+            "borrar (left-aligned, fixed width)",
+            Style {
+                size: Size {
+                    width: length(320.0_f32),
+                    height: length(34.0_f32),
+                },
+                padding: Rect {
+                    left: length(12.0_f32),
+                    right: length(12.0_f32),
+                    top: length(0.0_f32),
+                    bottom: length(0.0_f32),
+                },
+                align_items: Some(AlignItems::Center),
+                ..Default::default()
+            },
+            Alignment::Start,
+            &danger,
+            Msg::C,
+        );
+
+        let status = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(40.0_f32),
+            },
+            ..Default::default()
+        })
+        .text_aligned(
+            format!(
+                "clicks: {} · último: {}",
+                model.counter,
+                match model.last {
+                    Some(Msg::A) => "A",
+                    Some(Msg::B) => "B",
+                    Some(Msg::C) => "C",
+                    None => "—",
+                }
+            ),
+            14.0,
+            Color::from_rgba8(180, 190, 205, 255),
+            Alignment::Start,
+        );
+
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            gap: Size {
+                width: length(0.0_f32),
+                height: length(14.0_f32),
+            },
+            padding: Rect {
+                left: length(32.0_f32),
+                right: length(32.0_f32),
+                top: length(32.0_f32),
+                bottom: length(32.0_f32),
+            },
+            align_items: Some(AlignItems::Start),
+            justify_content: Some(JustifyContent::Start),
+            ..Default::default()
+        })
+        .fill(Color::from_rgba8(20, 24, 32, 255))
+        .children(vec![a, b, c, status])
+    }
+}
+
+fn main() {
+    llimphi_ui::run::<Showcase>();
+}
diff --git a/widgets/button/src/lib.rs b/widgets/button/src/lib.rs
new file mode 100644
index 0000000..638b7ec
--- /dev/null
+++ b/widgets/button/src/lib.rs
@@ -0,0 +1,124 @@
+//! `llimphi-widget-button` — botón clicable con estado hover.
+//!
+//! Reusable entre apps Llimphi: `button_view(label, palette, on_click)`
+//! devuelve una vista que cambia de color cuando el cursor pasa por
+//! encima y emite `on_click` al ser apretada. El caller controla las
+//! dimensiones envolviendo el `View` retornado en un contenedor flex
+//! con el tamaño que necesite (botón ancho completo, chip 80×30, etc).
+//!
+//! No expone estado interno — todo el estado vive en el `Model` del App
+//! (el hover lo trackea llimphi-ui automáticamente vía `hover_fill`).
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+
+/// Paleta del botón. Por default un chip dark con highlight tenue al
+/// hover — similar al patrón `bg_panel_alt` + `bg_row_hover` de
+/// `nahual-theme`.
+#[derive(Debug, Clone, Copy)]
+pub struct ButtonPalette {
+    pub bg: Color,
+    pub bg_hover: Color,
+    pub fg: Color,
+    pub radius: f64,
+}
+
+impl Default for ButtonPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl ButtonPalette {
+    /// Construye la paleta desde un `Theme` semántico.
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg: t.bg_button,
+            bg_hover: t.bg_button_hover,
+            fg: t.fg_text,
+            radius: 5.0,
+        }
+    }
+}
+
+/// Compone un botón rectangular: bg + texto + on_click + hover. Por
+/// default ocupa ancho 100% del padre y alto 30 px; sobre-escribir
+/// pasando un `Style` propio vía [`button_styled`].
+pub fn button_view<Msg: Clone + 'static>(
+    label: impl Into<String>,
+    palette: &ButtonPalette,
+    on_click: Msg,
+) -> View<Msg> {
+    button_styled(
+        label,
+        Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(30.0_f32),
+            },
+            padding: Rect {
+                left: length(10.0_f32),
+                right: length(10.0_f32),
+                top: length(0.0_f32),
+                bottom: length(0.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(JustifyContent::Center),
+            ..Default::default()
+        },
+        Alignment::Center,
+        palette,
+        on_click,
+    )
+}
+
+/// Variante con `Style` y alineación de texto explícitos — útil cuando
+/// la app necesita un botón con dimensiones particulares o el texto a
+/// la izquierda.
+pub fn button_styled<Msg: Clone + 'static>(
+    label: impl Into<String>,
+    style: Style,
+    text_alignment: Alignment,
+    palette: &ButtonPalette,
+    on_click: Msg,
+) -> View<Msg> {
+    // Gloss superior: gradient blanco alpha 28 → 0 sobre la mitad de
+    // arriba. `paint_with` corre entre el fill (que respeta hover_fill)
+    // y el texto, así que la luz se suma al color de base sin sustituirlo
+    // — el hover sigue funcionando idéntico. El RoundedRect cubre el
+    // botón completo y `Extend::Pad` (default de peniko) deja la mitad
+    // inferior en alpha 0. Match: chrome/splash — superficie con luz
+    // descendente desde el edge superior.
+    let radius = palette.radius;
+    View::new(style)
+        .fill(palette.bg)
+        .hover_fill(palette.bg_hover)
+        .radius(radius)
+        .paint_with(move |scene, _ts, rect| {
+            use llimphi_ui::llimphi_raster::kurbo::{Affine, Point, RoundedRect};
+            use llimphi_ui::llimphi_raster::peniko::{Fill, Gradient};
+            if rect.w <= 0.0 || rect.h <= 0.0 {
+                return;
+            }
+            let x0 = rect.x as f64;
+            let y0 = rect.y as f64;
+            let x1 = (rect.x + rect.w) as f64;
+            let y1 = (rect.y + rect.h) as f64;
+            let y_mid = y0 + (y1 - y0) * 0.5;
+            let rr = RoundedRect::new(x0, y0, x1, y1, radius);
+            let top = Color::from_rgba8(255, 255, 255, 28);
+            let bot = Color::from_rgba8(255, 255, 255, 0);
+            let gradient = Gradient::new_linear(Point::new(x0, y0), Point::new(x0, y_mid))
+                .with_stops([top, bot].as_slice());
+            scene.fill(Fill::NonZero, Affine::IDENTITY, &gradient, None, &rr);
+        })
+        .text_aligned(label.into(), 13.0, palette.fg, text_alignment)
+        .on_click(on_click)
+}
diff --git a/widgets/card/Cargo.toml b/widgets/card/Cargo.toml
new file mode 100644
index 0000000..985db9d
--- /dev/null
+++ b/widgets/card/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-widget-card"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-card — container card-shape con padding consistente, esquinas redondeadas y opcional accent border a la izquierda. Análogo Llimphi al `nahual-widget-card` GPUI."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-panel = { workspace = true }
diff --git a/widgets/card/LEEME.md b/widgets/card/LEEME.md
new file mode 100644
index 0000000..aee2f80
--- /dev/null
+++ b/widgets/card/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-card
+
+> Card base para [llimphi](../../README.md).
+
+Contenedor con borde + radius + padding consistente con el theme. Slot de contenido libre. Base de `stat-card` y otras especializadas.
diff --git a/widgets/card/README.md b/widgets/card/README.md
new file mode 100644
index 0000000..97b5524
--- /dev/null
+++ b/widgets/card/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-card
+
+> Base card for [llimphi](../../README.md).
+
+Container with border + radius + theme-consistent padding. Free content slot. Base for `stat-card` and other specialized variants.
diff --git a/widgets/card/src/lib.rs b/widgets/card/src/lib.rs
new file mode 100644
index 0000000..550ea0e
--- /dev/null
+++ b/widgets/card/src/lib.rs
@@ -0,0 +1,146 @@
+//! `llimphi-widget-card` — container card-shape para entries de
+//! timeline, info cards, dashboards, etc.
+//!
+//! Aporta la **forma**: padding consistente (12/8), `radius` 4, gap
+//! pequeño entre children, y opcionalmente un accent vertical
+//! (4 px) pegado a la izquierda para entries semánticas (verde =
+//! OK, rojo = error, ámbar = warning, etc).
+//!
+//! Análogo Llimphi al `nahual-widget-card` GPUI.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::View;
+use llimphi_widget_panel::{panel_signature_painter, PanelStyle};
+
+#[derive(Debug, Clone, Copy)]
+pub struct CardPalette {
+    pub bg: Color,
+}
+
+impl Default for CardPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl CardPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self { bg: t.bg_panel }
+    }
+}
+
+/// Opciones del card.
+#[derive(Debug, Clone, Copy)]
+pub struct CardOptions {
+    /// Accent vertical a la izquierda (4 px). `None` = sin accent.
+    pub accent: Option<Color>,
+    pub padding: f32,
+    pub gap: f32,
+    pub radius: f64,
+    /// Firma visual del panel (gradient sutil + hairline accent en el
+    /// top). `Some(style)` reemplaza el fill plano del body por el
+    /// painter de la firma — usar para cards prominentes (dashboards,
+    /// timeline entries grandes) donde se nota el "tallado". `None`
+    /// mantiene el fill sólido del `CardPalette` (default).
+    pub signature: Option<PanelStyle>,
+}
+
+impl Default for CardOptions {
+    fn default() -> Self {
+        Self {
+            accent: None,
+            padding: 12.0,
+            gap: 4.0,
+            radius: 4.0,
+            signature: None,
+        }
+    }
+}
+
+impl CardOptions {
+    /// Variante con firma visual derivada del theme. El `radius` del
+    /// card se alinea al del `PanelStyle` para que la silueta del
+    /// gradiente coincida con las esquinas del nodo.
+    pub fn with_signature(t: &llimphi_theme::Theme) -> Self {
+        let style = PanelStyle::from_theme(t);
+        Self {
+            accent: None,
+            padding: 12.0,
+            gap: 4.0,
+            radius: style.radius,
+            signature: Some(style),
+        }
+    }
+}
+
+/// Compone un card: bg + radius + padding + flex-column con gap entre
+/// children. Si `opts.accent` está presente, hay una franja vertical
+/// de 4 px del color del accent pegada al borde izquierdo.
+pub fn card_view<Msg: Clone + 'static>(
+    children: Vec<View<Msg>>,
+    opts: CardOptions,
+    palette: &CardPalette,
+) -> View<Msg> {
+    let pad = opts.padding;
+    let body_style = Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: llimphi_ui::llimphi_layout::taffy::prelude::Dimension::auto(),
+        },
+        flex_grow: 1.0,
+        padding: Rect {
+            left: length(pad),
+            right: length(pad),
+            top: length(pad * 0.66),
+            bottom: length(pad * 0.66),
+        },
+        gap: Size {
+            width: length(0.0_f32),
+            height: length(opts.gap),
+        },
+        ..Default::default()
+    };
+    let body = if let Some(style) = opts.signature {
+        View::new(body_style)
+            .paint_with(panel_signature_painter(style))
+            .radius(opts.radius)
+            .clip(true)
+            .children(children)
+    } else {
+        View::new(body_style)
+            .fill(palette.bg)
+            .radius(opts.radius)
+            .children(children)
+    };
+
+    let Some(accent) = opts.accent else {
+        return body;
+    };
+
+    let accent_strip = View::new(Style {
+        size: Size {
+            width: length(4.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(accent)
+    .radius(opts.radius);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: llimphi_ui::llimphi_layout::taffy::prelude::Dimension::auto(),
+        },
+        ..Default::default()
+    })
+    .children(vec![accent_strip, body])
+}
diff --git a/widgets/clipboard/Cargo.toml b/widgets/clipboard/Cargo.toml
new file mode 100644
index 0000000..8e0add2
--- /dev/null
+++ b/widgets/clipboard/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-clipboard"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-clipboard — backend de portapapeles del sistema (vía arboard) que implementa el trait Clipboard del text-editor. Una línea para que el menú de edición y los atajos Ctrl+C/X/V de cualquier app Llimphi usen el clipboard real del SO, con degradación silenciosa a no-op si no hay display."
+
+[dependencies]
+llimphi-widget-text-editor = { workspace = true }
+arboard = { workspace = true }
diff --git a/widgets/clipboard/src/lib.rs b/widgets/clipboard/src/lib.rs
new file mode 100644
index 0000000..1080ffc
--- /dev/null
+++ b/widgets/clipboard/src/lib.rs
@@ -0,0 +1,55 @@
+//! `llimphi-clipboard` — el portapapeles del sistema para apps Llimphi.
+//!
+//! El `text-editor` define el trait [`Clipboard`] pero deja el backend al
+//! caller (no quiere acoplarse a X11/Wayland/macOS/Windows). Este crate
+//! aporta el backend obvio — [`arboard`] — para que cualquier app lo
+//! enchufe en una línea:
+//!
+//! ```ignore
+//! let mut clip = llimphi_clipboard::SystemClipboard::new();
+//! editor.apply_key_with_clipboard(&ev, &mut clip);
+//! ```
+//!
+//! Si no hay display (CI headless, sesión sin servidor gráfico) degrada
+//! a no-op silencioso: `get` devuelve `None`, `set` descarta. Nunca
+//! panica.
+
+#![forbid(unsafe_code)]
+
+use llimphi_widget_text_editor::Clipboard;
+
+/// Portapapeles del sistema vía `arboard`. `None` interno = no se pudo
+/// abrir (sin display); en ese caso opera como [`llimphi_widget_text_editor::NullClipboard`].
+pub struct SystemClipboard {
+    inner: Option<arboard::Clipboard>,
+}
+
+impl SystemClipboard {
+    pub fn new() -> Self {
+        Self {
+            inner: arboard::Clipboard::new().ok(),
+        }
+    }
+
+    /// `true` si el backend del SO está disponible.
+    pub fn is_available(&self) -> bool {
+        self.inner.is_some()
+    }
+}
+
+impl Default for SystemClipboard {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl Clipboard for SystemClipboard {
+    fn get(&mut self) -> Option<String> {
+        self.inner.as_mut()?.get_text().ok()
+    }
+    fn set(&mut self, s: &str) {
+        if let Some(c) = self.inner.as_mut() {
+            let _ = c.set_text(s.to_owned());
+        }
+    }
+}
diff --git a/widgets/context-menu/Cargo.toml b/widgets/context-menu/Cargo.toml
new file mode 100644
index 0000000..2b993e7
--- /dev/null
+++ b/widgets/context-menu/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-widget-context-menu"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-context-menu — menú contextual gioser: panel negro, barra accent vertical de 3px a la izquierda, sin esquinas redondeadas ni sombras, header en uppercase tiny. Se monta sobre App::view_overlay con un scrim full-screen que dismissa al click-fuera."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-panel = { workspace = true }
diff --git a/widgets/context-menu/LEEME.md b/widgets/context-menu/LEEME.md
new file mode 100644
index 0000000..59dd7f2
--- /dev/null
+++ b/widgets/context-menu/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-context-menu
+
+> Menú contextual para [llimphi](../../README.md).
+
+Look distintivo: barra accent vertical 3px, hard edges, header tiny. API: `View::on_right_click[_at]` + `App::view_overlay`.
diff --git a/widgets/context-menu/README.md b/widgets/context-menu/README.md
new file mode 100644
index 0000000..4438a4a
--- /dev/null
+++ b/widgets/context-menu/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-context-menu
+
+> Context menu for [llimphi](../../README.md).
+
+Distinctive look: 3px vertical accent bar, hard edges, tiny header. API: `View::on_right_click[_at]` + `App::view_overlay`.
diff --git a/widgets/context-menu/src/lib.rs b/widgets/context-menu/src/lib.rs
new file mode 100644
index 0000000..5d1e11d
--- /dev/null
+++ b/widgets/context-menu/src/lib.rs
@@ -0,0 +1,761 @@
+//! `llimphi-widget-context-menu` — menú contextual con look gioser.
+//!
+//! Distintivo y minimalista:
+//!
+//! ```text
+//!   ┃ B5                          ← header (uppercase tiny)
+//!   ┃ ✂  Cortar          Ctrl+X
+//!   ┃ ⧉  Copiar          Ctrl+C   ← gutter de íconos + barra accent (3px)
+//!   ┃ ⎘  Pegar           Ctrl+V
+//!   ┃ ─────────────────────
+//!   ┃ ◐  Tema             ▸       ← submenú (flyout a la derecha)
+//! ```
+//!
+//! Cada fila: barra accent vertical (firma) · gutter de ícono · label
+//! (centrado vertical) · atajo o chevron de submenú. Sin radios, sin
+//! sombras: color sólido + tipografía + la barra accent.
+//!
+//! Se monta como `View<Msg>` que se devuelve desde
+//! [`llimphi_ui::App::view_overlay`]. Internamente arma:
+//! 1. Un **scrim** full-screen con `on_click = on_dismiss` que cierra
+//!    el menú al click-fuera.
+//! 2. Un **panel** absoluto (clampeado al viewport).
+//! 3. Si hay un submenú abierto ([`ContextMenuSpec::open_sub`]), un
+//!    segundo panel-flyout a la derecha del item padre.
+//!
+//! Animación: [`ContextMenuSpec::appear`] (0..1) controla un fade + un
+//! leve desplazamiento vertical de entrada. La app que quiera animarlo
+//! guarda un `Tween` y lo va subiendo; pasar `1.0` lo muestra fijo.
+
+#![forbid(unsafe_code)]
+
+use std::sync::Arc;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, percent, FlexDirection, Position, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_widget_panel::{panel_signature_painter, PanelStyle};
+
+/// Paleta del menú — estilo "webpage" elegante derivado del theme:
+/// panel redondeado con borde hairline, filas como píldoras con hover
+/// suave (`bg_hover`) y resaltado de teclado (`bg_active`, más un
+/// indicador accent a la izquierda). Defaults dark; override por la app.
+#[derive(Debug, Clone, Copy)]
+pub struct ContextMenuPalette {
+    pub bg_panel: Color,
+    /// Fila bajo el cursor (hover) — tinte suave.
+    pub bg_hover: Color,
+    /// Fila activa por teclado (flechas) — algo más marcado que el hover.
+    pub bg_active: Color,
+    pub fg_text: Color,
+    /// Texto de la fila activa/hover (legible sobre el tinte suave).
+    pub fg_active: Color,
+    pub fg_shortcut: Color,
+    pub fg_disabled: Color,
+    pub fg_destructive: Color,
+    pub fg_header: Color,
+    /// Ícono en gutter (estado normal) — algo más apagado que el texto.
+    pub fg_icon: Color,
+    pub accent: Color,
+    pub border: Color,
+    pub separator: Color,
+    pub scrim: Color,
+    /// Radio de las esquinas del panel.
+    pub radius: f64,
+    pub panel: PanelStyle,
+}
+
+impl ContextMenuPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        // El panel se eleva sobre el fondo: usa `bg_panel` (no `bg_app`)
+        // con su gradiente sutil + esquinas redondeadas.
+        let mut panel = PanelStyle::neutral(t);
+        panel.bg_base = t.bg_panel;
+        panel.radius = PANEL_RADIUS as f64;
+        Self {
+            bg_panel: t.bg_panel,
+            bg_hover: t.bg_row_hover,
+            bg_active: t.bg_selected,
+            fg_text: t.fg_text,
+            fg_active: t.fg_text,
+            fg_shortcut: t.fg_muted,
+            fg_disabled: t.fg_muted,
+            fg_destructive: t.fg_destructive,
+            fg_header: t.fg_muted,
+            fg_icon: t.fg_muted,
+            accent: t.accent,
+            border: t.border,
+            separator: t.border,
+            scrim: Color::from_rgba8(0, 0, 0, 64),
+            radius: PANEL_RADIUS as f64,
+            panel,
+        }
+    }
+}
+
+/// Un item del menú. `separator = true` ignora el resto y pinta una
+/// línea. `children` no vacío → es un submenú (muestra chevron ▸ y, si
+/// está abierto, despliega un flyout). `icon` es un glifo opcional que
+/// se pinta en el gutter izquierdo.
+#[derive(Debug, Clone)]
+pub struct ContextMenuItem {
+    pub label: String,
+    pub shortcut: Option<String>,
+    pub icon: Option<String>,
+    pub enabled: bool,
+    pub separator: bool,
+    pub destructive: bool,
+    /// Items del submenú. Vacío = acción simple.
+    pub children: Vec<ContextMenuItem>,
+}
+
+impl ContextMenuItem {
+    pub fn action(label: impl Into<String>) -> Self {
+        Self {
+            label: label.into(),
+            shortcut: None,
+            icon: None,
+            enabled: true,
+            separator: false,
+            destructive: false,
+            children: Vec::new(),
+        }
+    }
+
+    pub fn with_shortcut(mut self, shortcut: impl Into<String>) -> Self {
+        self.shortcut = Some(shortcut.into());
+        self
+    }
+
+    /// Glifo del gutter izquierdo (unicode; no acopla a `llimphi-icons`).
+    pub fn icon(mut self, glyph: impl Into<String>) -> Self {
+        self.icon = Some(glyph.into());
+        self
+    }
+
+    pub fn disabled(mut self) -> Self {
+        self.enabled = false;
+        self
+    }
+
+    pub fn destructive(mut self) -> Self {
+        self.destructive = true;
+        self
+    }
+
+    /// Convierte el item en submenú con estos hijos.
+    pub fn submenu(mut self, children: Vec<ContextMenuItem>) -> Self {
+        self.children = children;
+        self
+    }
+
+    pub fn has_submenu(&self) -> bool {
+        !self.children.is_empty()
+    }
+
+    pub fn separator() -> Self {
+        Self {
+            label: String::new(),
+            shortcut: None,
+            icon: None,
+            enabled: false,
+            separator: true,
+            destructive: false,
+            children: Vec::new(),
+        }
+    }
+}
+
+/// Especificación del menú. Mantiene los 8 campos clásicos para no
+/// romper los call-sites por literal; las capacidades nuevas (submenús,
+/// animación, hover) viajan aparte en [`ContextMenuExtras`] vía
+/// [`context_menu_view_ex`].
+pub struct ContextMenuSpec<Msg: Clone + 'static> {
+    pub anchor: (f32, f32),
+    pub viewport: (f32, f32),
+    pub header: Option<String>,
+    pub items: Vec<ContextMenuItem>,
+    /// Índice resaltado por keyboard. `usize::MAX` = ninguno.
+    pub active: usize,
+    /// Click en un item de nivel raíz (índice).
+    pub on_pick: Arc<dyn Fn(usize) -> Msg + Send + Sync>,
+    /// Msg al click-fuera (scrim) o Esc.
+    pub on_dismiss: Msg,
+    pub palette: ContextMenuPalette,
+}
+
+/// Capacidades extra opcionales para [`context_menu_view_ex`]: submenús
+/// (flyout), animación de aparición y hover. Su `Default` reproduce el
+/// menú clásico (sin animación ni submenús).
+pub struct ContextMenuExtras<Msg: Clone + 'static> {
+    /// Índice del item-submenú desplegado (flyout). La app lo guarda y lo
+    /// actualiza vía `on_hover`.
+    pub open_sub: Option<usize>,
+    /// Progreso de aparición 0..1 (fade + leve slide). `1.0` = fijo.
+    pub appear: f32,
+    /// Click en un item de submenú: `(parent_idx, child_idx)`.
+    pub on_pick_sub: Option<Arc<dyn Fn(usize, usize) -> Msg + Send + Sync>>,
+    /// Hover sobre un item raíz: `Some(idx)` si es submenú (abrir flyout),
+    /// `None` si es item normal (cerrar). La app guarda el resultado en
+    /// `open_sub`.
+    pub on_hover: Option<Arc<dyn Fn(Option<usize>) -> Msg + Send + Sync>>,
+}
+
+impl<Msg: Clone + 'static> Default for ContextMenuExtras<Msg> {
+    fn default() -> Self {
+        Self {
+            open_sub: None,
+            appear: 1.0,
+            on_pick_sub: None,
+            on_hover: None,
+        }
+    }
+}
+
+const PANEL_W: f32 = 252.0;
+/// Altura de cada item (no-separator).
+const ITEM_H: f32 = 32.0;
+const SEP_H: f32 = 11.0;
+const HEADER_H: f32 = 26.0;
+/// Gutter del ícono a la izquierda del label.
+const ICON_W: f32 = 24.0;
+const ITEM_PAD_LEFT: f32 = 10.0;
+const ITEM_PAD_RIGHT: f32 = 12.0;
+/// Radio de las esquinas del panel (estilo webpage).
+const PANEL_RADIUS: f32 = 10.0;
+/// Radio de la píldora de hover/activo de cada fila.
+const ITEM_RADIUS: f32 = 6.0;
+/// Padding interno del panel (entre el borde y la columna de píldoras).
+const PANEL_PAD: f32 = 6.0;
+/// Ancho del indicador accent vertical de la fila activa.
+const INDICATOR_W: f32 = 3.0;
+/// Desplazamiento vertical de entrada (px) cuando `appear` = 0.
+const APPEAR_SLIDE: f32 = 8.0;
+
+/// Compone el menú clásico (sin submenús ni animación) como `View<Msg>`
+/// para `App::view_overlay`. Íconos, centrado vertical y separadores ya
+/// vienen incluidos.
+pub fn context_menu_view<Msg: Clone + 'static>(spec: ContextMenuSpec<Msg>) -> View<Msg> {
+    context_menu_view_ex(spec, ContextMenuExtras::default())
+}
+
+/// Como [`context_menu_view`] pero con [`ContextMenuExtras`]: submenús
+/// (flyout en hover), animación de aparición y hover.
+pub fn context_menu_view_ex<Msg: Clone + 'static>(
+    spec: ContextMenuSpec<Msg>,
+    extras: ContextMenuExtras<Msg>,
+) -> View<Msg> {
+    let ContextMenuSpec {
+        anchor,
+        viewport,
+        header,
+        items,
+        active,
+        on_pick,
+        on_dismiss,
+        palette,
+    } = spec;
+    let ContextMenuExtras {
+        open_sub,
+        appear,
+        on_pick_sub,
+        on_hover,
+    } = extras;
+
+    let appear = appear.clamp(0.0, 1.0);
+    let slide = (1.0 - appear) * APPEAR_SLIDE;
+
+    let (panel, panel_x, panel_y) = panel_view(
+        anchor,
+        viewport,
+        &header,
+        &items,
+        active,
+        slide,
+        &on_pick,
+        on_hover.as_ref(),
+        &palette,
+    );
+
+    let mut layers: Vec<View<Msg>> = vec![panel];
+
+    // Flyout del submenú abierto (sólo si la app provee `on_pick_sub`).
+    if let (Some(pidx), Some(on_pick_sub)) = (open_sub, on_pick_sub.as_ref()) {
+        if let Some(parent) = items.get(pidx).filter(|it| it.has_submenu()) {
+            let sub_anchor = submenu_anchor(panel_x, panel_y, &header, &items, pidx);
+            let flyout = submenu_view(
+                sub_anchor,
+                viewport,
+                pidx,
+                &parent.children,
+                slide,
+                on_pick_sub,
+                &palette,
+            );
+            layers.push(flyout);
+        }
+    }
+
+    // Scrim full-screen: cualquier click "fuera" dismissa.
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.scrim)
+    .alpha(appear)
+    .on_click(on_dismiss)
+    .children(layers)
+}
+
+/// Arma el panel raíz y devuelve `(view, x, y)` ya clampeados.
+#[allow(clippy::too_many_arguments)]
+fn panel_view<Msg: Clone + 'static>(
+    anchor: (f32, f32),
+    viewport: (f32, f32),
+    header: &Option<String>,
+    items: &[ContextMenuItem],
+    active: usize,
+    slide: f32,
+    on_pick: &Arc<dyn Fn(usize) -> Msg + Send + Sync>,
+    on_hover: Option<&Arc<dyn Fn(Option<usize>) -> Msg + Send + Sync>>,
+    palette: &ContextMenuPalette,
+) -> (View<Msg>, f32, f32) {
+    let header_h = if header.is_some() { HEADER_H } else { 0.0 };
+    let items_h: f32 = items
+        .iter()
+        .map(|it| if it.separator { SEP_H } else { ITEM_H })
+        .sum();
+    // borde (1+1) + padding interno (PANEL_PAD ×2) + header + items.
+    let panel_h = 2.0 + 2.0 * PANEL_PAD + header_h + items_h;
+
+    let margin = 4.0;
+    let x = anchor
+        .0
+        .min((viewport.0 - PANEL_W - margin).max(margin))
+        .max(margin);
+    let y = anchor
+        .1
+        .min((viewport.1 - panel_h - margin).max(margin))
+        .max(margin);
+
+    let mut children: Vec<View<Msg>> = Vec::with_capacity(items.len() + 1);
+    if let Some(text) = header {
+        children.push(header_view(text.clone(), palette));
+    }
+    for (i, item) in items.iter().enumerate() {
+        children.push(item_view(
+            i,
+            None,
+            item,
+            i == active,
+            on_pick,
+            on_hover,
+            palette,
+        ));
+    }
+
+    let panel = panel_container(x, y + slide, panel_h, children, palette);
+    (panel, x, y)
+}
+
+/// Flyout del submenú: mismo look, posicionado a la derecha del padre.
+#[allow(clippy::too_many_arguments)]
+fn submenu_view<Msg: Clone + 'static>(
+    anchor: (f32, f32),
+    viewport: (f32, f32),
+    parent_idx: usize,
+    children_items: &[ContextMenuItem],
+    slide: f32,
+    on_pick_sub: &Arc<dyn Fn(usize, usize) -> Msg + Send + Sync>,
+    palette: &ContextMenuPalette,
+) -> View<Msg> {
+    let panel_h: f32 = children_items
+        .iter()
+        .map(|it| if it.separator { SEP_H } else { ITEM_H })
+        .sum::<f32>()
+        + 2.0
+        + 2.0 * PANEL_PAD;
+    let margin = 4.0;
+    let x = anchor
+        .0
+        .min((viewport.0 - PANEL_W - margin).max(margin))
+        .max(margin);
+    let y = anchor
+        .1
+        .min((viewport.1 - panel_h - margin).max(margin))
+        .max(margin);
+
+    let mut children: Vec<View<Msg>> = Vec::with_capacity(children_items.len());
+    for (j, item) in children_items.iter().enumerate() {
+        children.push(item_view(
+            j,
+            Some((parent_idx, on_pick_sub.clone())),
+            item,
+            false,
+            // on_pick raíz no se usa cuando hay parent; pasamos un dummy.
+            &dummy_pick(),
+            None,
+            palette,
+        ));
+    }
+    panel_container(x, y + slide, panel_h, children, palette)
+}
+
+/// El contenedor visual: panel redondeado con borde hairline (un nodo
+/// exterior del color del borde + uno interior con el gradiente del
+/// PanelStyle) y padding interno para que las píldoras de cada fila
+/// queden inset — el look de menú de webpage.
+fn panel_container<Msg: Clone + 'static>(
+    x: f32,
+    y: f32,
+    panel_h: f32,
+    children: Vec<View<Msg>>,
+    palette: &ContextMenuPalette,
+) -> View<Msg> {
+    View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(x),
+            top: length(y),
+            right: auto(),
+            bottom: auto(),
+        },
+        size: Size {
+            width: length(PANEL_W),
+            height: length(panel_h),
+        },
+        padding: Rect {
+            left: length(1.0_f32),
+            right: length(1.0_f32),
+            top: length(1.0_f32),
+            bottom: length(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.border)
+    .radius(palette.radius as f64)
+    .children(vec![View::new(Style {
+        flex_direction: FlexDirection::Column,
+        flex_grow: 1.0,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        padding: Rect {
+            left: length(PANEL_PAD),
+            right: length(PANEL_PAD),
+            top: length(PANEL_PAD),
+            bottom: length(PANEL_PAD),
+        },
+        ..Default::default()
+    })
+    .radius((palette.radius - 1.0) as f64)
+    .paint_with(panel_signature_painter(palette.panel))
+    .children(children)])
+}
+
+/// Ancla del flyout: a la derecha del panel padre, alineado al item.
+fn submenu_anchor(
+    panel_x: f32,
+    panel_y: f32,
+    header: &Option<String>,
+    items: &[ContextMenuItem],
+    parent_idx: usize,
+) -> (f32, f32) {
+    let mut off = if header.is_some() { HEADER_H } else { 0.0 };
+    off += 1.0 + PANEL_PAD; // borde + padding interno del contenedor
+    for it in items.iter().take(parent_idx) {
+        off += if it.separator { SEP_H } else { ITEM_H };
+    }
+    // pequeño solape para que el flyout se lea continuo con el padre.
+    (panel_x + PANEL_W - PANEL_PAD, panel_y + off)
+}
+
+fn header_view<Msg: Clone + 'static>(text: String, palette: &ContextMenuPalette) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(HEADER_H),
+        },
+        padding: Rect {
+            left: length(ITEM_PAD_LEFT + INDICATOR_W + ICON_W + 4.0),
+            right: length(ITEM_PAD_RIGHT),
+            top: length(2.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .text_aligned(text.to_uppercase(), 9.5, palette.fg_header, Alignment::Start)
+}
+
+/// Pinta una fila. Si `parent` es `Some((pidx, cb))`, es un item de
+/// submenú y clickea vía `cb(pidx, idx)`; si es `None`, es raíz y usa
+/// `on_pick(idx)` + (si corresponde) `on_hover` para abrir su flyout.
+#[allow(clippy::too_many_arguments)]
+fn item_view<Msg: Clone + 'static>(
+    idx: usize,
+    parent: Option<(usize, Arc<dyn Fn(usize, usize) -> Msg + Send + Sync>)>,
+    item: &ContextMenuItem,
+    is_active: bool,
+    on_pick: &Arc<dyn Fn(usize) -> Msg + Send + Sync>,
+    on_hover: Option<&Arc<dyn Fn(Option<usize>) -> Msg + Send + Sync>>,
+    palette: &ContextMenuPalette,
+) -> View<Msg> {
+    if item.separator {
+        return separator_view(palette);
+    }
+
+    // Color del texto y del atajo según estado.
+    let (fg, fg_dim): (Color, Color) = if !item.enabled {
+        (palette.fg_disabled, palette.fg_disabled)
+    } else if item.destructive {
+        (palette.fg_destructive, palette.fg_shortcut)
+    } else if is_active {
+        (palette.fg_active, palette.fg_active)
+    } else {
+        (palette.fg_text, palette.fg_shortcut)
+    };
+    // Ícono: accent cuando la fila está activa (cue del menú), si no
+    // apagado.
+    let icon_fg = if !item.enabled {
+        palette.fg_disabled
+    } else if is_active {
+        palette.accent
+    } else {
+        palette.fg_icon
+    };
+
+    // Indicador accent vertical a la izquierda — visible sólo en la fila
+    // activa; reserva su ancho siempre para que el texto no salte.
+    let indicator = View::new(Style {
+        size: Size {
+            width: length(INDICATOR_W),
+            height: percent(0.55_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    });
+    let indicator = if is_active && item.enabled {
+        indicator.fill(palette.accent).radius(2.0)
+    } else {
+        indicator
+    };
+
+    // Gutter de ícono — auto height para que el row lo centre vertical.
+    let icon_cell = View::new(Style {
+        size: Size {
+            width: length(ICON_W),
+            height: auto(),
+        },
+        flex_shrink: 0.0,
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        ..Default::default()
+    })
+    .text_aligned(item.icon.clone().unwrap_or_default(), 13.0, icon_fg, Alignment::Center);
+
+    // Label — auto height (lo centra el align_items Center del row).
+    let label = View::new(Style {
+        size: Size {
+            width: auto(),
+            height: auto(),
+        },
+        flex_grow: 1.0,
+        ..Default::default()
+    })
+    .text_aligned(item.label.clone(), 12.5, fg, Alignment::Start);
+
+    // Cola: chevron de submenú o atajo de teclado.
+    let trailing_text = if item.has_submenu() {
+        Some(("\u{203A}".to_string(), fg)) // ›
+    } else {
+        item.shortcut.clone().map(|s| (s, fg_dim))
+    };
+    let mut row_children: Vec<View<Msg>> = vec![indicator, icon_cell, label];
+    if let Some((txt, color)) = trailing_text {
+        row_children.push(
+            View::new(Style {
+                size: Size {
+                    width: length(64.0_f32),
+                    height: auto(),
+                },
+                flex_shrink: 0.0,
+                ..Default::default()
+            })
+            .text_aligned(txt, 11.0, color, Alignment::End),
+        );
+    }
+
+    let mut row = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(ITEM_H),
+        },
+        flex_direction: FlexDirection::Row,
+        padding: Rect {
+            left: length(ITEM_PAD_LEFT),
+            right: length(ITEM_PAD_RIGHT),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        gap: Size {
+            width: length(2.0_f32),
+            height: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .radius(ITEM_RADIUS as f64)
+    .children(row_children);
+
+    // Fondo: píldora suave en activo (teclado). El hover lo aporta
+    // `hover_fill` (tinte aún más suave) para no competir con el activo.
+    if is_active && item.enabled {
+        row = row.fill(palette.bg_active);
+    }
+
+    if item.enabled {
+        row = row.hover_fill(palette.bg_hover);
+        match &parent {
+            Some((pidx, cb)) => {
+                let cb = cb.clone();
+                let pidx = *pidx;
+                row = row.on_click_at(move |_, _, _, _| Some(cb(pidx, idx)));
+            }
+            None => {
+                let on_pick = on_pick.clone();
+                row = row.on_click_at(move |_, _, _, _| Some(on_pick(idx)));
+                // Hover abre/cierra el flyout según sea submenú o no.
+                if let Some(on_hover) = on_hover {
+                    let on_hover = on_hover.clone();
+                    let target = if item.has_submenu() { Some(idx) } else { None };
+                    row = row.on_pointer_enter(on_hover(target));
+                }
+            }
+        }
+    }
+    row
+}
+
+fn separator_view<Msg: Clone + 'static>(palette: &ContextMenuPalette) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(SEP_H),
+        },
+        flex_direction: FlexDirection::Column,
+        justify_content: Some(JustifyContent::Center),
+        align_items: Some(AlignItems::Center),
+        padding: Rect {
+            left: length(ITEM_PAD_LEFT),
+            right: length(ITEM_PAD_RIGHT),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.separator)])
+}
+
+/// `on_pick` dummy para los items de submenú (que usan `on_pick_sub`).
+/// Nunca se invoca: `item_view` con `parent=Some` ignora `on_pick`.
+fn dummy_pick<Msg: Clone + 'static>() -> Arc<dyn Fn(usize) -> Msg + Send + Sync> {
+    Arc::new(|_| unreachable!("submenu item usa on_pick_sub, no on_pick"))
+}
+
+/// Navegación por teclado: dado el activo + dirección (`+1`/`-1`), el
+/// siguiente índice válido (saltea separators y disabled). `usize::MAX`
+/// si no hay elegibles.
+pub fn step_active(items: &[ContextMenuItem], current: usize, direction: i32) -> usize {
+    if items.is_empty() {
+        return usize::MAX;
+    }
+    let n = items.len() as i32;
+    let start = if current == usize::MAX {
+        if direction >= 0 {
+            -1
+        } else {
+            n
+        }
+    } else {
+        current as i32
+    };
+    let mut i = start;
+    for _ in 0..n {
+        i += direction;
+        if i < 0 {
+            i = n - 1;
+        } else if i >= n {
+            i = 0;
+        }
+        let item = &items[i as usize];
+        if !item.separator && item.enabled {
+            return i as usize;
+        }
+    }
+    usize::MAX
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn it(label: &str) -> ContextMenuItem {
+        ContextMenuItem::action(label)
+    }
+
+    #[test]
+    fn step_active_skips_separators() {
+        let items = vec![it("A"), ContextMenuItem::separator(), it("B"), it("C")];
+        assert_eq!(step_active(&items, 0, 1), 2);
+        assert_eq!(step_active(&items, 2, -1), 0);
+    }
+
+    #[test]
+    fn step_active_skips_disabled() {
+        let items = vec![it("A"), it("B").disabled(), it("C")];
+        assert_eq!(step_active(&items, 0, 1), 2);
+        assert_eq!(step_active(&items, 2, -1), 0);
+    }
+
+    #[test]
+    fn step_active_wraps_around() {
+        let items = vec![it("A"), it("B"), it("C")];
+        assert_eq!(step_active(&items, 2, 1), 0);
+        assert_eq!(step_active(&items, 0, -1), 2);
+    }
+
+    #[test]
+    fn submenu_y_icono_se_setean() {
+        let item = it("Tema")
+            .icon("◐")
+            .submenu(vec![it("Oscuro"), it("Claro")]);
+        assert!(item.has_submenu());
+        assert_eq!(item.children.len(), 2);
+        assert_eq!(item.icon.as_deref(), Some("◐"));
+    }
+
+    #[test]
+    fn extras_default_es_menu_clasico() {
+        let extras: ContextMenuExtras<u8> = ContextMenuExtras::default();
+        assert_eq!(extras.appear, 1.0);
+        assert!(extras.open_sub.is_none());
+        assert!(extras.on_hover.is_none());
+        assert!(extras.on_pick_sub.is_none());
+    }
+}
diff --git a/widgets/dock-rail/Cargo.toml b/widgets/dock-rail/Cargo.toml
new file mode 100644
index 0000000..ca9cf7e
--- /dev/null
+++ b/widgets/dock-rail/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-dock-rail"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-dock-rail — rail vertical de dientes (pestañas con barra de acento + icono) para sidebars acoplables; clic activa, arrastre mueve entre rails."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/dock-rail/src/lib.rs b/widgets/dock-rail/src/lib.rs
new file mode 100644
index 0000000..c69e7a6
--- /dev/null
+++ b/widgets/dock-rail/src/lib.rs
@@ -0,0 +1,184 @@
+//! `llimphi-widget-dock-rail` — rail vertical de **dientes** para
+//! sidebars acoplables.
+//!
+//! Cada diente es una pestaña vertical: una **barra de acento** de 3px
+//! pegada al borde interno (encendida cuando el item está activo) + un
+//! **icono** centrado. Los dientes apilan en una columna redondeada que
+//! se pinta como una franja flotante al borde del centro — el patrón del
+//! dock de cosmos, ahora reutilizable.
+//!
+//! Render-only y agnóstico del `Msg`: el item se identifica por un `u64`
+//! opaco. El clic (en el *press*, para no pelear con el arrastre) activa
+//! vía `on_activate(id)`; el diente es **arrastrable** con su `id` como
+//! payload, y el rail entero es **drop target** (`on_drop(payload)`) —
+//! así una app puede mover un diente de un sidebar a otro soltándolo
+//! sobre el rail opuesto. El icono lo dibuja el caller (`make_icon`), que
+//! recibe el color ya resuelto según el estado activo/inactivo.
+//!
+//! ```ignore
+//! let items = [DockRailItem { id: 0, active: true }, DockRailItem { id: 1, active: false }];
+//! dock_rail_view(
+//!     &items,
+//!     44.0,
+//!     &DockRailPalette::from_theme(&theme),
+//!     |id, size, color| my_icon_view(id, size, color),
+//!     |id| Msg::DockActivate(side, id),
+//!     move |payload| Some(Msg::DockDrop(side, payload)),
+//! )
+//! ```
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, percent, FlexDirection, Size, Style},
+    AlignItems, JustifyContent,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::{DragPhase, View};
+use llimphi_theme::Theme;
+
+/// Alto de cada diente (px).
+const TOOTH_H: f32 = 42.0;
+/// Alto de la barra de acento (px) — un poco menor que el diente para
+/// dejar aire arriba y abajo.
+const BAR_H: f32 = 40.0;
+/// Tamaño del icono que se le pide al caller (px).
+const ICON_PX: f32 = 20.0;
+
+/// Paleta del rail.
+#[derive(Debug, Clone, Copy)]
+pub struct DockRailPalette {
+    /// Fondo de la franja del rail.
+    pub bg_rail: Color,
+    /// Fondo del diente activo.
+    pub bg_active: Color,
+    /// Fondo al hover (diente) y al sobrevolar un drop válido (rail).
+    pub bg_hover: Color,
+    /// Color del acento: barra del diente activo + su icono.
+    pub accent: Color,
+    /// Color del icono de un diente inactivo.
+    pub icon_inactive: Color,
+}
+
+impl DockRailPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            bg_rail: t.bg_panel_alt,
+            bg_active: t.bg_selected,
+            bg_hover: t.bg_row_hover,
+            accent: t.accent,
+            icon_inactive: t.fg_muted,
+        }
+    }
+}
+
+/// Un diente del rail: su id opaco y si está activo.
+#[derive(Debug, Clone, Copy)]
+pub struct DockRailItem {
+    pub id: u64,
+    pub active: bool,
+}
+
+/// Construye el rail de dientes.
+///
+/// - `items`: en el orden en que se quieren mostrar (el widget no
+///   reordena).
+/// - `width`: ancho de la franja del rail (px).
+/// - `make_icon(id, size, color)`: dibuja el icono del item con el color
+///   ya resuelto (acento si activo, atenuado si no).
+/// - `on_activate(id)`: `Msg` al clickear (en el press).
+/// - `on_drop(payload)`: `Msg` opcional cuando se suelta un diente
+///   (cualquier `id`) sobre este rail.
+pub fn dock_rail_view<Msg, FIcon, FAct, FDrop>(
+    items: &[DockRailItem],
+    width: f32,
+    palette: &DockRailPalette,
+    make_icon: FIcon,
+    on_activate: FAct,
+    on_drop: FDrop,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+    FIcon: Fn(u64, f32, Color) -> View<Msg>,
+    FAct: Fn(u64) -> Msg,
+    FDrop: Fn(u64) -> Option<Msg> + Send + Sync + 'static,
+{
+    let mut teeth: Vec<View<Msg>> = Vec::with_capacity(items.len());
+    for item in items {
+        let fg = if item.active {
+            palette.accent
+        } else {
+            palette.icon_inactive
+        };
+        // Barra de acento, pegada al borde interno.
+        let accent_bar = {
+            let b = View::new(Style {
+                size: Size {
+                    width: length(3.0_f32),
+                    height: length(BAR_H),
+                },
+                flex_shrink: 0.0,
+                ..Default::default()
+            });
+            if item.active {
+                b.fill(palette.accent).radius(2.0)
+            } else {
+                b
+            }
+        };
+        let icon_box = View::new(Style {
+            flex_grow: 1.0,
+            size: Size {
+                width: percent(0.0_f32),
+                height: length(TOOTH_H),
+            },
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(JustifyContent::Center),
+            ..Default::default()
+        })
+        .children(vec![make_icon(item.id, ICON_PX, fg)]);
+
+        let id = item.id;
+        let msg = on_activate(id);
+        let mut tooth = View::new(Style {
+            flex_direction: FlexDirection::Row,
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(TOOTH_H),
+            },
+            flex_shrink: 0.0,
+            align_items: Some(AlignItems::Center),
+            ..Default::default()
+        })
+        .hover_fill(palette.bg_hover)
+        // Click en el press activa; arrastrar mueve de rail (payload=id).
+        .on_click_at(move |_, _, _, _| Some(msg.clone()))
+        .draggable_at(|phase, _, _, _, _| match phase {
+            DragPhase::Move | DragPhase::End => None,
+        })
+        .drag_payload(id)
+        .children(vec![accent_bar, icon_box]);
+        if item.active {
+            tooth = tooth.fill(palette.bg_active);
+        }
+        teeth.push(tooth);
+    }
+
+    // La franja: sólo del alto de los dientes (el hueco de abajo lo deja
+    // libre para que el área central lo aproveche si el rail flota como
+    // overlay). Es además el drop target del lado.
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: length(width),
+            height: auto(),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_rail)
+    .radius(5.0)
+    .on_drop(on_drop)
+    .drop_hover_fill(palette.bg_hover)
+    .children(teeth)
+}
diff --git a/widgets/edit-menu/Cargo.toml b/widgets/edit-menu/Cargo.toml
new file mode 100644
index 0000000..1223669
--- /dev/null
+++ b/widgets/edit-menu/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "llimphi-widget-edit-menu"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-edit-menu — el menú de edición estándar (Deshacer/Rehacer/Cortar/Copiar/Pegar/Eliminar/Seleccionar todo) para cualquier campo que use EditorState (input single-line e IDE enriquecido). Arma el ContextMenuSpec desde flags derivados del estado y aplica las acciones reutilizando apply_key_with_clipboard."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-context-menu = { workspace = true }
+llimphi-widget-text-editor = { workspace = true }
diff --git a/widgets/edit-menu/src/lib.rs b/widgets/edit-menu/src/lib.rs
new file mode 100644
index 0000000..777900e
--- /dev/null
+++ b/widgets/edit-menu/src/lib.rs
@@ -0,0 +1,361 @@
+//! `llimphi-widget-edit-menu` — el menú de edición estándar para
+//! cualquier campo de texto Llimphi.
+//!
+//! Tanto el input single-line ([`llimphi_widget_text_input`]) como el
+//! editor IDE enriquecido ([`llimphi_widget_text_editor`]) se apoyan en
+//! el mismo [`EditorState`]. Este widget arma, a partir de ese estado,
+//! el menú contextual canónico:
+//!
+//! ```text
+//!   ┃ EDICIÓN
+//!   ┃ Deshacer            Ctrl+Z
+//!   ┃ Rehacer             Ctrl+Y
+//!   ┃ ─────────────────────
+//!   ┃ Cortar              Ctrl+X
+//!   ┃ Copiar              Ctrl+C
+//!   ┃ Pegar               Ctrl+V
+//!   ┃ Eliminar            Supr
+//!   ┃ ─────────────────────
+//!   ┃ Seleccionar todo    Ctrl+A
+//! ```
+//!
+//! Cada ítem se habilita o no según el estado real (sin selección →
+//! Cortar/Copiar/Eliminar grises; sin historial → Deshacer gris; etc).
+//!
+//! Uso típico, en tres pasos por app:
+//! 1. El campo emite la posición del click derecho — `View::on_right_click_at`
+//!    → `Msg::AbrirMenuEdicion(x, y)`. El `update` guarda el ancla.
+//! 2. `App::view_overlay` devuelve
+//!    `Some(context_menu_view(edit_menu::edit_context_menu(...)))` cuando el
+//!    ancla está presente.
+//! 3. El pick produce `Msg::Edicion(EditAction)`; el `update` llama a
+//!    [`apply`] con el `EditorState` del campo focuseado y el clipboard.
+
+#![forbid(unsafe_code)]
+
+use std::sync::Arc;
+
+use llimphi_theme::Theme;
+use llimphi_ui::{Key, KeyEvent, KeyState, Modifiers, NamedKey};
+use llimphi_widget_context_menu::{step_active, ContextMenuItem, ContextMenuPalette, ContextMenuSpec};
+use llimphi_widget_text_editor::{ApplyResult, Clipboard, EditorState};
+
+/// Una acción de edición del menú estándar. Es `Copy` para que el
+/// `on_pick` la capture sin clonar y la app la rebote en un `Msg`.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum EditAction {
+    Undo,
+    Redo,
+    Cut,
+    Copy,
+    Paste,
+    /// Borra la selección (Supr/Delete sin mover el resto).
+    Delete,
+    SelectAll,
+}
+
+/// Banderas que deciden qué ítems van habilitados. Derivalas del estado
+/// del campo focuseado con [`EditFlags::from_editor`].
+#[derive(Debug, Clone, Copy)]
+pub struct EditFlags {
+    /// Hay selección no-vacía → Cortar/Copiar/Eliminar habilitados.
+    pub has_selection: bool,
+    /// Hay algo que deshacer.
+    pub can_undo: bool,
+    /// Hay algo que rehacer.
+    pub can_redo: bool,
+    /// El clipboard tiene contenido pegable → Pegar habilitado. Si no se
+    /// puede saber barato, pasá `true` (Pegar no-opea si está vacío).
+    pub can_paste: bool,
+    /// El buffer no está vacío → Seleccionar todo habilitado.
+    pub has_text: bool,
+    /// Campo enmascarado (password): Cortar/Copiar se deshabilitan para
+    /// no filtrar el secreto al clipboard.
+    pub masked: bool,
+}
+
+impl Default for EditFlags {
+    fn default() -> Self {
+        Self {
+            has_selection: false,
+            can_undo: false,
+            can_redo: false,
+            can_paste: true,
+            has_text: false,
+            masked: false,
+        }
+    }
+}
+
+impl EditFlags {
+    /// Deriva las banderas del estado del editor. `can_paste` se deja en
+    /// `true` (consultar el clipboard real requiere `&mut`; pegar vacío
+    /// es no-op). `masked` lo decide el caller (el input lo sabe vía
+    /// `TextInputState::is_masked`).
+    pub fn from_editor(state: &EditorState, masked: bool) -> Self {
+        Self {
+            has_selection: state.has_selection(),
+            can_undo: state.can_undo(),
+            can_redo: state.can_redo(),
+            can_paste: true,
+            has_text: !state.is_empty(),
+            masked,
+        }
+    }
+
+    /// Igual que [`Self::from_editor`] pero fijando `can_paste`
+    /// explícitamente (cuando el caller ya sabe si el clipboard tiene
+    /// algo, p.ej. consultándolo una vez por frame).
+    pub fn from_editor_with_paste(state: &EditorState, masked: bool, can_paste: bool) -> Self {
+        Self {
+            can_paste,
+            ..Self::from_editor(state, masked)
+        }
+    }
+}
+
+/// Los ítems del menú + la acción de cada uno alineadas por índice. Las
+/// filas separador llevan una acción de relleno (`SelectAll`) que **nunca
+/// se dispara**: el `context-menu` no engancha `on_click` en separadores
+/// ni en ítems deshabilitados, así que `on_pick(i)` sólo recibe índices
+/// de ítems-acción habilitados. Mantener un `EditAction` por fila (en vez
+/// de `Option`) permite que el closure de `on_pick` capture sólo `Arc`s
+/// y no un `Msg` crudo — clave para satisfacer `Send + Sync` sin exigirle
+/// esos bounds al `Msg` de la app.
+fn entries(flags: EditFlags) -> (Vec<ContextMenuItem>, Vec<EditAction>) {
+    let mut items: Vec<ContextMenuItem> = Vec::with_capacity(9);
+    let mut actions: Vec<EditAction> = Vec::with_capacity(9);
+    const FILL: EditAction = EditAction::SelectAll;
+
+    let mut push = |item: ContextMenuItem, action: EditAction| {
+        items.push(item);
+        actions.push(action);
+    };
+
+    let undo = ContextMenuItem::action("Deshacer").icon("\u{21A9}").with_shortcut("Ctrl+Z");
+    push(
+        if flags.can_undo { undo } else { undo.disabled() },
+        EditAction::Undo,
+    );
+    let redo = ContextMenuItem::action("Rehacer").icon("\u{21AA}").with_shortcut("Ctrl+Y");
+    push(
+        if flags.can_redo { redo } else { redo.disabled() },
+        EditAction::Redo,
+    );
+
+    push(ContextMenuItem::separator(), FILL);
+
+    let can_copy = flags.has_selection && !flags.masked;
+    let cut = ContextMenuItem::action("Cortar").icon("\u{2702}").with_shortcut("Ctrl+X");
+    push(if can_copy { cut } else { cut.disabled() }, EditAction::Cut);
+    let copy = ContextMenuItem::action("Copiar").icon("\u{29C9}").with_shortcut("Ctrl+C");
+    push(if can_copy { copy } else { copy.disabled() }, EditAction::Copy);
+    let paste = ContextMenuItem::action("Pegar").icon("\u{2398}").with_shortcut("Ctrl+V");
+    push(
+        if flags.can_paste { paste } else { paste.disabled() },
+        EditAction::Paste,
+    );
+    let del = ContextMenuItem::action("Eliminar")
+        .icon("\u{2717}")
+        .with_shortcut("Supr")
+        .destructive();
+    push(
+        if flags.has_selection { del } else { del.disabled() },
+        EditAction::Delete,
+    );
+
+    push(ContextMenuItem::separator(), FILL);
+
+    let sel = ContextMenuItem::action("Seleccionar todo").icon("\u{2750}").with_shortcut("Ctrl+A");
+    push(
+        if flags.has_text { sel } else { sel.disabled() },
+        EditAction::SelectAll,
+    );
+
+    (items, actions)
+}
+
+/// Sólo los ítems (para componer un menú custom que incluya el bloque de
+/// edición seguido de acciones propias de la app).
+pub fn edit_menu_items(flags: EditFlags) -> Vec<ContextMenuItem> {
+    entries(flags).0
+}
+
+/// Mueve el resaltado de teclado por las filas del menú de edición, saltando
+/// separadores y filas deshabilitadas. `active == usize::MAX` significa "ninguna
+/// fila"; `direction` +1 baja, −1 sube. Pensado para enganchar flechas
+/// arriba/abajo sobre el menú de edición abierto (paralelo a [`step_active`]).
+pub fn edit_menu_step(flags: EditFlags, active: usize, direction: i32) -> usize {
+    let items = entries(flags).0;
+    step_active(&items, active, direction)
+}
+
+/// La [`EditAction`] de la fila `active`, o `None` si esa fila es un separador,
+/// está deshabilitada o fuera de rango. Pensado para resolver la tecla Enter
+/// sobre la fila resaltada por [`edit_menu_step`].
+pub fn edit_menu_action_at(flags: EditFlags, active: usize) -> Option<EditAction> {
+    let (items, actions) = entries(flags);
+    let item = items.get(active)?;
+    if item.separator || !item.enabled {
+        return None;
+    }
+    actions.get(active).copied()
+}
+
+/// Arma el [`ContextMenuSpec`] del menú de edición listo para
+/// `context_menu_view`. `on_action` rebota cada pick en un `Msg` de la
+/// app; `on_dismiss` cierra al click-fuera o Esc.
+pub fn edit_context_menu<Msg, F>(
+    anchor: (f32, f32),
+    viewport: (f32, f32),
+    theme: &Theme,
+    flags: EditFlags,
+    on_action: F,
+    on_dismiss: Msg,
+) -> ContextMenuSpec<Msg>
+where
+    Msg: Clone + 'static,
+    F: Fn(EditAction) -> Msg + Send + Sync + 'static,
+{
+    let (items, actions) = entries(flags);
+    let actions = Arc::new(actions);
+    let on_action = Arc::new(on_action);
+    let on_pick: Arc<dyn Fn(usize) -> Msg + Send + Sync> = Arc::new(move |i: usize| {
+        // `i` siempre cae en un ítem-acción habilitado (los separadores y
+        // deshabilitados no enganchan click). El `SelectAll` de relleno de
+        // los separadores nunca se alcanza.
+        let a = actions.get(i).copied().unwrap_or(EditAction::SelectAll);
+        (on_action)(a)
+    });
+
+    ContextMenuSpec {
+        anchor,
+        viewport,
+        header: Some("Edición".to_string()),
+        items,
+        active: usize::MAX,
+        on_pick,
+        on_dismiss,
+        palette: ContextMenuPalette::from_theme(theme),
+    }
+}
+
+/// Aplica una [`EditAction`] al `EditorState`. Reutiliza
+/// `apply_key_with_clipboard` (sintetizando la tecla equivalente) para
+/// heredar exactamente el mismo comportamiento — incluido el bookkeeping
+/// de parseo incremental — que el atajo de teclado. Devuelve el
+/// [`ApplyResult`] para que el caller decida si persistir el cambio.
+pub fn apply(state: &mut EditorState, action: EditAction, clipboard: &mut dyn Clipboard) -> ApplyResult {
+    match action {
+        EditAction::SelectAll => {
+            state.select_all();
+            ApplyResult::CursorMoved
+        }
+        EditAction::Undo => state.apply_key_with_clipboard(&ctrl_char("z"), clipboard),
+        EditAction::Redo => state.apply_key_with_clipboard(&ctrl_char("y"), clipboard),
+        EditAction::Cut => state.apply_key_with_clipboard(&ctrl_char("x"), clipboard),
+        EditAction::Copy => state.apply_key_with_clipboard(&ctrl_char("c"), clipboard),
+        EditAction::Paste => state.apply_key_with_clipboard(&ctrl_char("v"), clipboard),
+        EditAction::Delete => state.apply_key_with_clipboard(&named(NamedKey::Delete), clipboard),
+    }
+}
+
+fn ctrl_char(s: &str) -> KeyEvent {
+    KeyEvent {
+        key: Key::Character(s.into()),
+        state: KeyState::Pressed,
+        text: Some(s.to_string()),
+        modifiers: Modifiers {
+            ctrl: true,
+            ..Modifiers::default()
+        },
+        repeat: false,
+    }
+}
+
+fn named(k: NamedKey) -> KeyEvent {
+    KeyEvent {
+        key: Key::Named(k),
+        state: KeyState::Pressed,
+        text: None,
+        modifiers: Modifiers::default(),
+        repeat: false,
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use llimphi_widget_text_editor::MemClipboard;
+
+    fn lleno() -> EditorState {
+        let mut s = EditorState::new();
+        s.set_text("hola mundo");
+        s
+    }
+
+    #[test]
+    fn select_all_y_copy_llevan_todo_al_clipboard() {
+        let mut s = lleno();
+        let r = apply(&mut s, EditAction::SelectAll, &mut MemClipboard::new());
+        assert_eq!(r, ApplyResult::CursorMoved);
+        assert!(s.has_selection());
+        let mut clip = MemClipboard::new();
+        apply(&mut s, EditAction::Copy, &mut clip);
+        assert_eq!(clip.get().as_deref(), Some("hola mundo"));
+    }
+
+    #[test]
+    fn cut_borra_y_copia() {
+        let mut s = lleno();
+        s.select_all();
+        let mut clip = MemClipboard::new();
+        let r = apply(&mut s, EditAction::Cut, &mut clip);
+        assert_eq!(r, ApplyResult::Changed);
+        assert!(s.is_empty());
+        assert_eq!(clip.get().as_deref(), Some("hola mundo"));
+    }
+
+    #[test]
+    fn paste_inserta_del_clipboard() {
+        let mut s = EditorState::new();
+        let mut clip = MemClipboard::with("XYZ");
+        apply(&mut s, EditAction::Paste, &mut clip);
+        assert_eq!(s.text(), "XYZ");
+    }
+
+    #[test]
+    fn flags_sin_seleccion_deshabilitan_copiar() {
+        let s = lleno();
+        let flags = EditFlags::from_editor(&s, false);
+        assert!(!flags.has_selection);
+        let items = edit_menu_items(flags);
+        // "Cortar" es el primer ítem tras el separador (índice 3).
+        assert!(!items[3].enabled, "Cortar debería estar deshabilitado sin selección");
+    }
+
+    #[test]
+    fn step_y_action_at_saltan_separadores_y_deshabilitados() {
+        let mut s = lleno();
+        s.select_all();
+        let flags = EditFlags::from_editor(&s, false);
+        // Desde "ninguna fila", bajar cae en la primera seleccionable (Deshacer
+        // está gris sin historial; Cortar=3 es el primer habilitado real).
+        let first = edit_menu_step(flags, usize::MAX, 1);
+        assert!(edit_menu_action_at(flags, first).is_some());
+        // El separador (índice 2) nunca da acción.
+        assert_eq!(edit_menu_action_at(flags, 2), None);
+        // Avanzar y retroceder vuelve a una fila con acción válida.
+        let next = edit_menu_step(flags, first, 1);
+        assert!(edit_menu_action_at(flags, next).is_some());
+    }
+
+    #[test]
+    fn masked_deshabilita_copiar_aun_con_seleccion() {
+        let mut s = lleno();
+        s.select_all();
+        let flags = EditFlags::from_editor(&s, true);
+        let items = edit_menu_items(flags);
+        assert!(!items[4].enabled, "Copiar debería estar gris en campo enmascarado");
+    }
+}
diff --git a/widgets/empty/Cargo.toml b/widgets/empty/Cargo.toml
new file mode 100644
index 0000000..7042e6c
--- /dev/null
+++ b/widgets/empty/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-widget-empty"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-empty — empty-state con icono grande, título y descripción opcional. Reemplaza pantallas en blanco crudas con orientación al usuario."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-icons = { workspace = true }
diff --git a/widgets/empty/src/lib.rs b/widgets/empty/src/lib.rs
new file mode 100644
index 0000000..8bb2568
--- /dev/null
+++ b/widgets/empty/src/lib.rs
@@ -0,0 +1,112 @@
+//! `llimphi-widget-empty` — empty state con icono, título y descripción.
+//!
+//! Patrón para reemplazar pantallas en blanco con orientación: cuando
+//! una lista no tiene items, un editor no tiene archivo abierto, una
+//! búsqueda no arrojó resultados — en vez de fondo plano, mostrar
+//! un icono grande apagado + título + descripción corta + (opcional)
+//! botón de acción primaria.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, JustifyContent,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_icons::{icon_view, Icon};
+use llimphi_theme::{alpha, Theme};
+
+/// Paleta del empty state — colores apagados para no competir con la
+/// UI principal.
+#[derive(Debug, Clone, Copy)]
+pub struct EmptyPalette {
+    pub fg_icon: Color,
+    pub fg_title: Color,
+    pub fg_desc: Color,
+}
+
+impl EmptyPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            fg_icon: with_alpha8(t.fg_muted, alpha::HINT),
+            fg_title: t.fg_muted,
+            fg_desc: with_alpha8(t.fg_muted, alpha::DISABLED),
+        }
+    }
+}
+
+fn with_alpha8(c: Color, a: u8) -> Color {
+    let [r, g, b, _] = c.components;
+    use llimphi_ui::llimphi_raster::peniko::color::AlphaColor;
+    AlphaColor::new([r, g, b, a as f32 / 255.0])
+}
+
+/// Construye el empty state. La app llama desde su `view()` cuando
+/// detecta el caso vacío:
+///
+/// ```ignore
+/// if model.items.is_empty() {
+///     return empty_view(Icon::File, "Sin archivos abiertos",
+///                       Some("Abrí uno con Ctrl+O para empezar."),
+///                       &palette);
+/// }
+/// ```
+pub fn empty_view<Msg: Clone + 'static>(
+    icon: Icon,
+    title: impl Into<String>,
+    description: Option<&str>,
+    palette: &EmptyPalette,
+) -> View<Msg> {
+    let icon_cell = View::new(Style {
+        size: Size {
+            width: length(72.0_f32),
+            height: length(72.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(vec![icon_view(icon, palette.fg_icon, 1.4)]);
+
+    let title_view = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(28.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .text_aligned(title.into(), 15.5, palette.fg_title, Alignment::Center);
+
+    let mut children = vec![icon_cell, title_view];
+    if let Some(desc) = description {
+        children.push(
+            View::new(Style {
+                size: Size {
+                    width: length(360.0_f32),
+                    height: length(40.0_f32),
+                },
+                flex_shrink: 0.0,
+                ..Default::default()
+            })
+            .text_aligned(desc.to_string(), 12.0, palette.fg_desc, Alignment::Center),
+        );
+    }
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        gap: Size {
+            width: length(0.0_f32),
+            height: length(14.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(children)
+}
diff --git a/widgets/field/Cargo.toml b/widgets/field/Cargo.toml
new file mode 100644
index 0000000..9179ae6
--- /dev/null
+++ b/widgets/field/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-field"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-field — wrapper de formulario: label arriba + slot del input + descripción/error abajo. Patrón estándar para formularios accesibles."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/field/src/lib.rs b/widgets/field/src/lib.rs
new file mode 100644
index 0000000..a847c3b
--- /dev/null
+++ b/widgets/field/src/lib.rs
@@ -0,0 +1,127 @@
+//! `llimphi-widget-field` — wrapper de formulario para inputs.
+//!
+//! Patrón estándar de campo:
+//! ```text
+//! Nombre del campo            (label — bold, fg_text)
+//! [ input control aquí ]      (slot — viene como View<Msg>)
+//! Descripción o error abajo   (helper — fg_muted o fg_destructive)
+//! ```
+//!
+//! El widget no implementa el input — lo recibe como `View<Msg>` y lo
+//! envuelve. Esto permite usarlo con `text-input`, `text-area`, `switch`,
+//! `segmented` o cualquier otro control.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_theme::Theme;
+
+#[derive(Debug, Clone, Copy)]
+pub struct FieldPalette {
+    pub fg_label: Color,
+    pub fg_helper: Color,
+    pub fg_error: Color,
+    pub fg_required: Color,
+}
+
+impl FieldPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            fg_label: t.fg_text,
+            fg_helper: t.fg_muted,
+            fg_error: t.fg_destructive,
+            fg_required: t.fg_destructive,
+        }
+    }
+}
+
+/// Spec del field. `helper` y `error` son mutuamente excluyentes —
+/// si hay error, se renderiza el error (rojo); si no, el helper.
+pub struct FieldSpec<Msg: Clone + 'static> {
+    pub label: String,
+    /// El input/control concreto (text-input, switch, segmented, etc).
+    pub control: View<Msg>,
+    /// Marca el field como requerido — agrega un asterisco al label.
+    pub required: bool,
+    /// Texto explicativo debajo del control. `None` para omitirlo.
+    pub helper: Option<String>,
+    /// Mensaje de error — gana sobre `helper` cuando está presente.
+    pub error: Option<String>,
+    pub palette: FieldPalette,
+}
+
+const LABEL_H: f32 = 16.0;
+const HELPER_H: f32 = 16.0;
+const GAP_LABEL: f32 = 4.0;
+const GAP_HELPER: f32 = 4.0;
+const LABEL_FONT: f32 = 11.5;
+const HELPER_FONT: f32 = 10.5;
+
+pub fn field_view<Msg: Clone + 'static>(spec: FieldSpec<Msg>) -> View<Msg> {
+    let FieldSpec {
+        label,
+        control,
+        required,
+        helper,
+        error,
+        palette,
+    } = spec;
+
+    // Label: nombre + (asterisco si required).
+    let label_text = if required { format!("{label} *") } else { label };
+    let label_view = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(LABEL_H),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .text_aligned(label_text, LABEL_FONT, palette.fg_label, Alignment::Start);
+
+    // Helper / error — error gana si presente.
+    let helper_text = error.clone().or(helper.clone());
+    let helper_color = if error.is_some() { palette.fg_error } else { palette.fg_helper };
+
+    let mut children: Vec<View<Msg>> = vec![label_view, spacer(GAP_LABEL), control];
+    if let Some(t) = helper_text {
+        children.push(spacer(GAP_HELPER));
+        children.push(
+            View::new(Style {
+                size: Size {
+                    width: percent(1.0_f32),
+                    height: length(HELPER_H),
+                },
+                flex_shrink: 0.0,
+                ..Default::default()
+            })
+            .text_aligned(t, HELPER_FONT, helper_color, Alignment::Start),
+        );
+    }
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: llimphi_ui::llimphi_layout::taffy::prelude::auto(),
+        },
+        ..Default::default()
+    })
+    .children(children)
+}
+
+fn spacer<Msg: Clone + 'static>(h: f32) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(h),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+}
diff --git a/widgets/gallery/Cargo.toml b/widgets/gallery/Cargo.toml
new file mode 100644
index 0000000..4640b7c
--- /dev/null
+++ b/widgets/gallery/Cargo.toml
@@ -0,0 +1,31 @@
+[package]
+name = "llimphi-widget-gallery"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-gallery — app demo que pinta todos los widgets de llimphi en una sola ventana. Pensado como referencia visual y como smoke test al introducir cambios al theme o a los widgets."
+
+[[bin]]
+name = "llimphi-widget-gallery"
+path = "src/main.rs"
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-app-header = { workspace = true }
+llimphi-widget-banner = { workspace = true }
+llimphi-widget-button = { workspace = true }
+llimphi-widget-card = { workspace = true }
+llimphi-widget-list = { workspace = true }
+llimphi-widget-splitter = { workspace = true }
+llimphi-widget-stat-card = { workspace = true }
+llimphi-widget-tabs = { workspace = true }
+llimphi-widget-theme-switcher = { workspace = true }
+llimphi-widget-text-input = { workspace = true }
+llimphi-widget-tiled = { workspace = true }
+llimphi-widget-tree = { workspace = true }
+llimphi-widget-menubar = { workspace = true }
+llimphi-widget-context-menu = { workspace = true }
+app-bus = { workspace = true }
diff --git a/widgets/gallery/LEEME.md b/widgets/gallery/LEEME.md
new file mode 100644
index 0000000..d94b8f8
--- /dev/null
+++ b/widgets/gallery/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-gallery
+
+> Grid virtualizada de cards para [llimphi](../../README.md).
+
+Layout responsive con columnas auto-fit; cada card es `View<Msg>` libre. Reutiliza [`card`](../card/README.md).
diff --git a/widgets/gallery/README.md b/widgets/gallery/README.md
new file mode 100644
index 0000000..eaf56e0
--- /dev/null
+++ b/widgets/gallery/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-gallery
+
+> Virtualized card grid for [llimphi](../../README.md).
+
+Responsive layout with auto-fit columns; each card is a free `View<Msg>`. Reuses [`card`](../card/README.md).
diff --git a/widgets/gallery/src/main.rs b/widgets/gallery/src/main.rs
new file mode 100644
index 0000000..af16bc4
--- /dev/null
+++ b/widgets/gallery/src/main.rs
@@ -0,0 +1,569 @@
+//! `llimphi-widget-gallery` — todos los widgets de Llimphi en una sola
+//! ventana. Útil como referencia visual y smoke test al cambiar el
+//! theme o cualquier widget.
+//!
+//! Corré con: `cargo run -p llimphi-widget-gallery --release`.
+
+use std::sync::Arc;
+
+use llimphi_theme::Theme;
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{App, DragPhase, Handle, View};
+use llimphi_widget_app_header::{app_header, AppHeaderPalette};
+use llimphi_widget_banner::{banner_view, BannerKind};
+use llimphi_widget_button::{button_view, ButtonPalette};
+use llimphi_widget_list::{list_view, ListPalette, ListRow, ListSpec};
+use llimphi_widget_splitter::{splitter_two, Direction, PaneSize, SplitterPalette};
+use llimphi_widget_stat_card::{stat_card_view, StatCardPalette};
+use llimphi_widget_tabs::{tabs_view, TabsPalette, TabsSpec};
+use llimphi_widget_text_input::{text_input_view, TextInputPalette, TextInputState};
+use llimphi_widget_theme_switcher::theme_switcher_view;
+use llimphi_widget_tiled::{tiled_view_reorderable, TileSpec, TiledPalette};
+use llimphi_widget_context_menu::{
+    context_menu_view, ContextMenuItem, ContextMenuPalette, ContextMenuSpec,
+};
+use llimphi_widget_menubar::{menubar_overlay, menubar_view, MenuBarSpec, DEFAULT_HEIGHT as MENU_H};
+
+use app_bus::{AppMenu, Menu, MenuItem};
+
+#[derive(Clone)]
+enum Msg {
+    EditKey(llimphi_ui::KeyEvent),
+    SelectRow(usize),
+    SelectTab(usize),
+    ClickAction(u32),
+    ResizeOuter(f32),
+    SwapTile { from: usize, to: usize },
+    ChangeTheme(Theme),
+    CycleTheme,
+    // --- Barra de menú + contextual ---
+    MenuOpen(Option<usize>),
+    MenuCommand(String),
+    CloseMenus,
+    ContextMenuOpen(f32, f32),
+}
+
+struct Model {
+    text: TextInputState,
+    list_sel: usize,
+    tab: usize,
+    last_action: Option<u32>,
+    left_w: f32,
+    tile_order: Vec<usize>,
+    theme: Theme,
+    /// Índice del menú raíz abierto en la barra (None = ninguno).
+    menu_open: Option<usize>,
+    /// Posición (en coords de ventana) del menú contextual, si está abierto.
+    context_menu: Option<(f32, f32)>,
+}
+
+struct Gallery;
+
+impl App for Gallery {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · widget gallery"
+    }
+
+    fn initial_size() -> (u32, u32) {
+        (1280, 820)
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        Model {
+            text: TextInputState::new(),
+            list_sel: 0,
+            tab: 0,
+            last_action: None,
+            left_w: 380.0,
+            tile_order: vec![0, 1, 2, 3],
+            theme: Theme::dark(),
+            menu_open: None,
+            context_menu: None,
+        }
+    }
+
+    fn on_key(_: &Model, e: &llimphi_ui::KeyEvent) -> Option<Msg> {
+        Some(Msg::EditKey(e.clone()))
+    }
+
+    fn update(model: Model, msg: Msg, handle: &Handle<Msg>) -> Model {
+        let mut m = model;
+        match msg {
+            Msg::EditKey(ev) => {
+                m.text.apply_key(&ev);
+            }
+            Msg::SelectRow(i) => m.list_sel = i,
+            Msg::SelectTab(i) => m.tab = i,
+            Msg::ClickAction(id) => m.last_action = Some(id),
+            Msg::ResizeOuter(dx) => m.left_w = (m.left_w + dx).clamp(220.0, 800.0),
+            Msg::SwapTile { from, to } => {
+                if from != to && from < m.tile_order.len() && to < m.tile_order.len() {
+                    m.tile_order.swap(from, to);
+                }
+            }
+            Msg::ChangeTheme(t) => m.theme = t,
+            Msg::CycleTheme => m.theme = Theme::next_after(m.theme.name),
+            Msg::MenuOpen(which) => {
+                m.menu_open = which;
+                // Abrir un menú raíz cierra cualquier contextual.
+                m.context_menu = None;
+            }
+            Msg::CloseMenus => {
+                m.menu_open = None;
+                m.context_menu = None;
+            }
+            Msg::ContextMenuOpen(x, y) => {
+                m.menu_open = None;
+                m.context_menu = Some((x, y));
+            }
+            Msg::MenuCommand(cmd) => {
+                m.menu_open = None;
+                m.context_menu = None;
+                handle_menu_command(&cmd, &mut m, handle);
+            }
+        }
+        m
+    }
+
+    fn view(model: &Model) -> View<Msg> {
+        let theme = model.theme;
+        let menu = app_menu();
+        let menubar = menubar_view(&menubar_spec(&menu, model));
+        let header_palette = AppHeaderPalette::from_theme(&theme);
+        let btn_palette = ButtonPalette::from_theme(&theme);
+        let list_palette = ListPalette::from_theme(&theme);
+        let splitter_palette = SplitterPalette::from_theme(&theme);
+        let tabs_palette = TabsPalette::from_theme(&theme);
+        let stat_palette = StatCardPalette::from_theme(&theme);
+        let input_palette = TextInputPalette::from_theme(&theme);
+
+        // --- Header con acción a la derecha ---
+        let header = app_header(
+            format!(
+                "llimphi widget gallery · última acción: {}",
+                match model.last_action {
+                    Some(i) => format!("button #{i}"),
+                    None => "ninguna".to_string(),
+                }
+            ),
+            vec![
+                {
+                    let mut btn = button_view("acción A", &btn_palette, Msg::ClickAction(1));
+                    btn.style.size = Size {
+                        width: length(110.0_f32),
+                        height: length(28.0_f32),
+                    };
+                    btn
+                },
+                {
+                    let mut btn = button_view("acción B", &btn_palette, Msg::ClickAction(2));
+                    btn.style.size = Size {
+                        width: length(110.0_f32),
+                        height: length(28.0_f32),
+                    };
+                    btn
+                },
+                theme_switcher_view::<Msg>(&theme, Msg::ChangeTheme),
+            ],
+            &header_palette,
+        );
+
+        // --- Panel izquierdo: lista virtualizada ---
+        let entries = (0..40)
+            .map(|i| format!("entry {:02}", i))
+            .collect::<Vec<_>>();
+        let visible_rows: Vec<ListRow<Msg>> = entries
+            .iter()
+            .enumerate()
+            .take(20)
+            .map(|(i, label)| ListRow {
+                label: label.clone(),
+                selected: i == model.list_sel,
+                on_click: Msg::SelectRow(i),
+            })
+            .collect();
+        let list = list_view(ListSpec {
+            rows: visible_rows,
+            total: entries.len(),
+            caption: Some(format!("{} entradas", entries.len())),
+            truncated_hint: Some(format!("… y {} más", entries.len() - 20)),
+            row_height: 22.0,
+            palette: list_palette,
+        });
+
+        // --- Panel derecho: tabs con stat cards + banners + input + tiled ---
+        let tiled_palette = TiledPalette::from_theme(&theme);
+        let tab_content = match model.tab {
+            0 => stats_pane(&theme, &stat_palette),
+            1 => alerts_pane(),
+            2 => input_pane(&model.text, &input_palette, &theme),
+            _ => tiled_pane(&theme, &tiled_palette, &model.tile_order),
+        };
+        let tabs = tabs_view(TabsSpec {
+            labels: vec!["Stats".into(), "Banners".into(), "Input".into(), "Tiled".into()],
+            active: model.tab,
+            on_select: Msg::SelectTab,
+            content: tab_content,
+            tab_height: 32.0,
+            palette: tabs_palette,
+            tab_width: Some(120.0),
+        });
+
+        let body = splitter_two(
+            Direction::Row,
+            list,
+            PaneSize::Fixed(model.left_w),
+            tabs,
+            PaneSize::Flex,
+            |phase, dx| match phase {
+                DragPhase::Move => Some(Msg::ResizeOuter(dx)),
+                DragPhase::End => None,
+            },
+            &splitter_palette,
+        );
+
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(theme.bg_app)
+        // Origen (0,0) ⇒ las coords locales del right-click son coords de
+        // ventana, listas para anclar el contextual.
+        .on_right_click_at(|x, y, _, _| Some(Msg::ContextMenuOpen(x, y)))
+        .children(vec![menubar, header, body])
+    }
+
+    fn view_overlay(model: &Model) -> Option<View<Msg>> {
+        // Prioridad: contextual sobre el dropdown del menú principal.
+        if let Some((x, y)) = model.context_menu {
+            return Some(context_menu_for_gallery(model, x, y));
+        }
+        let menu = app_menu();
+        menubar_overlay(&menubar_spec(&menu, model))
+    }
+}
+
+// ---------------------------------------------------------------------
+// Menú principal (barra) + contextual
+// ---------------------------------------------------------------------
+
+/// Viewport para clampear overlays. La gallery no trackea el tamaño real
+/// de ventana, así que usamos las constantes de `initial_size()`.
+fn viewport_of(_model: &Model) -> (f32, f32) {
+    let (w, h) = Gallery::initial_size();
+    (w as f32, h as f32)
+}
+
+/// `MenuBarSpec` compartido por `menubar_view` y `menubar_overlay`.
+fn menubar_spec<'a>(menu: &'a AppMenu, model: &'a Model) -> MenuBarSpec<'a, Msg> {
+    MenuBarSpec {
+        menu,
+        open: model.menu_open,
+        theme: &model.theme,
+        viewport: viewport_of(model),
+        height: MENU_H,
+        on_open: Arc::new(Msg::MenuOpen),
+        on_command: Arc::new(|c: &str| Msg::MenuCommand(c.to_string())),
+    }
+}
+
+/// Menú principal de la vitrina. Archivo / Ver / Ayuda — sólo comandos que
+/// mapean a `Msg` reales. No hay "Editar": el único campo de texto es el
+/// `text_input` del tab Input, que ya recibe teclas por `on_key`.
+fn app_menu() -> AppMenu {
+    AppMenu::new()
+        .menu(
+            Menu::new("Archivo").item(MenuItem::new("Salir", "file.quit").shortcut("Esc")),
+        )
+        .menu(
+            Menu::new("Ver")
+                .item(MenuItem::new("Cambiar tema", "view.theme"))
+                .item(MenuItem::new("Pestaña: Stats", "view.tab.0").separated())
+                .item(MenuItem::new("Pestaña: Banners", "view.tab.1"))
+                .item(MenuItem::new("Pestaña: Input", "view.tab.2"))
+                .item(MenuItem::new("Pestaña: Tiled", "view.tab.3")),
+        )
+        .menu(Menu::new("Ayuda").item(MenuItem::new("Acerca de", "help.about")))
+}
+
+/// Traduce un command id (de la barra o del contextual) al `Msg` real y lo
+/// aplica. `file.quit` cierra el proceso directo (no hay diálogo).
+fn handle_menu_command(cmd: &str, m: &mut Model, handle: &Handle<Msg>) {
+    match cmd {
+        "file.quit" => std::process::exit(0),
+        // Reusa el Msg de ciclo de tema en vez de duplicar la lógica.
+        "view.theme" => handle.dispatch(Msg::CycleTheme),
+        "view.tab.0" => m.tab = 0,
+        "view.tab.1" => m.tab = 1,
+        "view.tab.2" => m.tab = 2,
+        "view.tab.3" => m.tab = 3,
+        // "help.about" y desconocidos: no-op (sin diálogo todavía).
+        _ => {}
+    }
+}
+
+/// Menú contextual de la vitrina. No hay objeto seleccionable en un canvas:
+/// el "ítem seleccionado" es la entrada resaltada de la lista izquierda, así
+/// que el contextual la nombra y ofrece navegar las pestañas + cambiar tema.
+fn context_menu_for_gallery(model: &Model, x: f32, y: f32) -> View<Msg> {
+    let header = format!("entrada seleccionada: {:02}", model.list_sel);
+
+    let items = vec![
+        ContextMenuItem::action("Cambiar tema"),
+        ContextMenuItem::separator(),
+        ContextMenuItem::action("Pestaña: Stats"),
+        ContextMenuItem::action("Pestaña: Banners"),
+        ContextMenuItem::action("Pestaña: Input"),
+        ContextMenuItem::action("Pestaña: Tiled"),
+    ];
+    // Mapeo índice de item → command id de `handle_menu_command`.
+    let cmds: Vec<&'static str> = vec![
+        "view.theme",
+        "",
+        "view.tab.0",
+        "view.tab.1",
+        "view.tab.2",
+        "view.tab.3",
+    ];
+    let on_pick: Arc<dyn Fn(usize) -> Msg + Send + Sync> = Arc::new(move |i: usize| {
+        Msg::MenuCommand(cmds.get(i).copied().unwrap_or("").to_string())
+    });
+
+    context_menu_view(ContextMenuSpec {
+        anchor: (x, y),
+        viewport: viewport_of(model),
+        header: Some(header),
+        items,
+        active: usize::MAX,
+        on_pick,
+        on_dismiss: Msg::CloseMenus,
+        palette: ContextMenuPalette::from_theme(&model.theme),
+    })
+}
+
+// ---------------------------------------------------------------------
+// Paneles de tabs
+// ---------------------------------------------------------------------
+
+fn stats_pane(theme: &Theme, palette: &StatCardPalette) -> View<Msg> {
+    let valid = Color::from_rgba8(94, 184, 124, 255);
+    let warn = Color::from_rgba8(238, 178, 53, 255);
+    let danger = Color::from_rgba8(225, 84, 75, 255);
+
+    let row = View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(160.0_f32),
+        },
+        gap: Size {
+            width: length(12.0_f32),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![
+        wrap_card_cell(stat_card_view::<Msg>(
+            "Coherencia",
+            "247",
+            "átomos válidos",
+            valid,
+            &[],
+            palette,
+        )),
+        wrap_card_cell(stat_card_view::<Msg>(
+            "Por evaluar",
+            "12",
+            "esperando re-cómputo",
+            warn,
+            &[],
+            palette,
+        )),
+        wrap_card_cell(stat_card_view::<Msg>(
+            "En conflicto",
+            "3",
+            "contradicen su origen",
+            danger,
+            &[
+                "puerta_amanecer".into(),
+                "muelle_soledad".into(),
+                "viento_nuevo".into(),
+            ],
+            palette,
+        )),
+    ]);
+
+    let _ = theme;
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        padding: Rect {
+            left: length(20.0_f32),
+            right: length(20.0_f32),
+            top: length(20.0_f32),
+            bottom: length(20.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![row])
+}
+
+fn wrap_card_cell(view: View<Msg>) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        flex_grow: 1.0,
+        ..Default::default()
+    })
+    .children(vec![view])
+}
+
+fn alerts_pane() -> View<Msg> {
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        gap: Size {
+            width: length(0.0_f32),
+            height: length(10.0_f32),
+        },
+        padding: Rect {
+            left: length(20.0_f32),
+            right: length(20.0_f32),
+            top: length(20.0_f32),
+            bottom: length(20.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![
+        banner_view(BannerKind::Info, "info: gallery iniciada con widgets verdes"),
+        banner_view(BannerKind::Success, "success: 12 widgets cargados ok"),
+        banner_view(BannerKind::Warning, "warning: el tema light aún tiene contraste subóptimo"),
+        banner_view(BannerKind::Error, "error: ningún error real — sólo un demo"),
+    ])
+}
+
+fn input_pane(state: &TextInputState, palette: &TextInputPalette, theme: &Theme) -> View<Msg> {
+    let label = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(18.0_f32),
+        },
+        ..Default::default()
+    })
+    .text_aligned(
+        "Probá tipear acá:".to_string(),
+        12.0,
+        theme.fg_muted,
+        Alignment::Start,
+    );
+    let input = text_input_view(
+        state,
+        "lo que sea",
+        true, // siempre focado en este demo
+        palette,
+        Msg::ClickAction(0),
+    );
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        gap: Size {
+            width: length(0.0_f32),
+            height: length(8.0_f32),
+        },
+        padding: Rect {
+            left: length(20.0_f32),
+            right: length(20.0_f32),
+            top: length(20.0_f32),
+            bottom: length(20.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![label, input])
+}
+
+fn tiled_pane(theme: &Theme, palette: &TiledPalette, order: &[usize]) -> View<Msg> {
+    let body = |text: &str, size: f32, color: Color, align: Alignment| -> View<Msg> {
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            flex_grow: 1.0,
+            padding: Rect {
+                left: length(12.0_f32),
+                right: length(12.0_f32),
+                top: length(10.0_f32),
+                bottom: length(10.0_f32),
+            },
+            ..Default::default()
+        })
+        .text_aligned(text.to_string(), size, color, align)
+    };
+
+    let make_tile = |id: usize| -> TileSpec<Msg> {
+        match id {
+            0 => TileSpec {
+                label: "logs".into(),
+                content: body(
+                    "[12:01] boot\n[12:02] config ok\n[12:03] esperando…",
+                    12.0,
+                    theme.fg_text,
+                    Alignment::Start,
+                ),
+            },
+            1 => TileSpec {
+                label: "métricas".into(),
+                content: body("cpu 37%\nram 1.2 G\nnet 12 kB/s", 12.0, theme.fg_text, Alignment::Start),
+            },
+            2 => TileSpec {
+                label: "uptime".into(),
+                content: body("4d 12h", 26.0, theme.accent, Alignment::Center),
+            },
+            _ => TileSpec {
+                label: "queue".into(),
+                content: body(
+                    "pending 7\nin-flight 2\ndone 1842",
+                    12.0,
+                    theme.fg_text,
+                    Alignment::Start,
+                ),
+            },
+        }
+    };
+
+    let tiles: Vec<TileSpec<Msg>> = order.iter().map(|&id| make_tile(id)).collect();
+
+    tiled_view_reorderable(
+        tiles,
+        |from, to| Some(Msg::SwapTile { from, to }),
+        palette,
+    )
+}
+
+fn main() {
+    llimphi_ui::run::<Gallery>();
+}
diff --git a/widgets/grid/Cargo.toml b/widgets/grid/Cargo.toml
new file mode 100644
index 0000000..55619fb
--- /dev/null
+++ b/widgets/grid/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-grid"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-grid — grilla virtualizada 2D para Llimphi: celdas clicables en mosaico, selección, caption/hint opcionales, recorte de overflow. El caller hace la virtualización (calcula la ventana visible con `ventana_visible` y pasa sólo las celdas visibles); el widget las compone en filas. Base para galerías de miniaturas tipo gThumb/FastStone — agnóstico del contenido de la celda (el caller arma cada `View`: thumb, placeholder, lo que sea)."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/grid/src/lib.rs b/widgets/grid/src/lib.rs
new file mode 100644
index 0000000..72a61bc
--- /dev/null
+++ b/widgets/grid/src/lib.rs
@@ -0,0 +1,467 @@
+//! `llimphi-widget-grid` — grilla virtualizada 2D para Llimphi.
+//!
+//! Hermano de [`llimphi-widget-list`], pero en mosaico: celdas clicables
+//! dispuestas en `cols` columnas × filas, con selección, caption/hint
+//! opcionales y recorte de overflow. Pensado como base para galerías de
+//! miniaturas tipo gThumb / FastStone — capaz de listar miles de archivos
+//! sin montar todo: el caller renderea **sólo la ventana visible**.
+//!
+//! Como `list`, el widget **no** scrollea por sí mismo. La virtualización
+//! es del caller, que mantiene `scroll_fila` (primera fila de celdas
+//! visible) en su estado y lo actualiza con la rueda (calco de
+//! `nahual-file-explorer`). La diferencia con `list` es que en 2D el
+//! cálculo de la ventana no es trivial — cuántas columnas caben depende
+//! del ancho del viewport — así que este crate lo provee como función
+//! pura testeable: [`ventana_visible`].
+//!
+//! El widget es **agnóstico del contenido**: cada [`GridCell`] lleva un
+//! `View<Msg>` que el caller arma (un thumb `peniko::Image`, un skeleton
+//! mientras decodifica, un ícono…). Así el pipeline de miniaturas (cola
+//! async + cache) vive afuera y sólo llena la celda con imagen o
+//! placeholder.
+//!
+//! Flujo típico del caller:
+//!
+//! ```ignore
+//! let v = ventana_visible(total, viewport_w, viewport_h, scroll_fila, &metrics);
+//! let cells: Vec<GridCell<Msg>> = (v.first..v.first + v.count)
+//!     .map(|i| GridCell {
+//!         content: thumb_o_placeholder(i),     // el caller decide
+//!         label: Some(nombre(i)),
+//!         selected: i == seleccionado,
+//!         on_click: Msg::Seleccionar(i),
+//!     })
+//!     .collect();
+//! let grid = grid_view(GridSpec {
+//!     cells, cols: v.cols, metrics,
+//!     caption: Some(format!("{total} imágenes")),
+//!     truncated_hint: (v.first + v.count < total)
+//!         .then(|| format!("… y {} más", total - (v.first + v.count))),
+//!     palette: GridPalette::default(),
+//! });
+//! ```
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+
+/// Geometría de la grilla en pixels. `tile_h` debe incluir el alto del
+/// label si el caller lo usa — el widget reserva una franja inferior para
+/// él dentro de la celda. `gap` es el espacio entre celdas (y entre filas);
+/// `pad` el margen interno del contenedor (cada lado).
+#[derive(Debug, Clone, Copy)]
+pub struct GridMetrics {
+    pub tile_w: f32,
+    pub tile_h: f32,
+    pub gap: f32,
+    pub pad: f32,
+}
+
+impl Default for GridMetrics {
+    fn default() -> Self {
+        // Default ~thumb mediano estilo gThumb.
+        Self {
+            tile_w: 128.0,
+            tile_h: 148.0, // 128 imagen + ~20 label
+            gap: 8.0,
+            pad: 8.0,
+        }
+    }
+}
+
+/// Resultado del cálculo de virtualización: qué celdas montar. `first` y
+/// `count` delimitan el rango de índices `[first, first + count)` que el
+/// caller debe renderear; `cols` cuántas columnas caben (para `grid_view`).
+/// Los demás campos son informativos (scrollbars, "fila X de Y", clamping).
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct VisibleWindow {
+    /// Columnas que caben en el ancho del viewport (≥ 1).
+    pub cols: usize,
+    /// Índice del primer item a renderear.
+    pub first: usize,
+    /// Cantidad de items a renderear desde `first`.
+    pub count: usize,
+    /// Fila (0-based) del primer item visible — ya clampeada al rango.
+    pub first_row: usize,
+    /// Total de filas que ocupa la colección completa.
+    pub total_rows: usize,
+    /// Filas que entran en el alto del viewport (incluye 1 de margen).
+    pub filas_visibles: usize,
+}
+
+/// Calcula la ventana visible de una grilla virtualizada. **Función pura.**
+///
+/// - `total`: cantidad total de items.
+/// - `viewport_w` / `viewport_h`: dimensiones del área de la grilla en px.
+/// - `scroll_fila`: primera fila que el caller quiere ver arriba (se
+///   clampa al rango válido; el caller no necesita pre-clampar).
+/// - `m`: geometría (tile + gap + pad).
+///
+/// El número de columnas se deriva del ancho: `cols = ⌊(ancho_útil + gap)
+/// / (tile_w + gap)⌋`, mínimo 1. Las filas visibles incluyen una extra de
+/// margen para que una fila parcial al borde no aparezca en blanco al
+/// scrollear.
+pub fn ventana_visible(
+    total: usize,
+    viewport_w: f32,
+    viewport_h: f32,
+    scroll_fila: usize,
+    m: &GridMetrics,
+) -> VisibleWindow {
+    let paso_w = (m.tile_w + m.gap).max(1.0);
+    let paso_h = (m.tile_h + m.gap).max(1.0);
+
+    let util_w = (viewport_w - 2.0 * m.pad + m.gap).max(0.0);
+    let cols = ((util_w / paso_w).floor() as usize).max(1);
+
+    let total_rows = total.div_ceil(cols);
+
+    let util_h = (viewport_h - 2.0 * m.pad + m.gap).max(0.0);
+    let filas_visibles = (util_h / paso_h).ceil() as usize + 1;
+
+    let max_first_row = total_rows.saturating_sub(1);
+    let first_row = scroll_fila.min(max_first_row);
+    let first = first_row * cols;
+    let last_row = (first_row + filas_visibles).min(total_rows);
+    let count = (last_row * cols).min(total).saturating_sub(first);
+
+    VisibleWindow {
+        cols,
+        first,
+        count,
+        first_row,
+        total_rows,
+        filas_visibles,
+    }
+}
+
+/// Paleta de la grilla. Defaults dark con selección azulada (calco de
+/// `ListPalette`).
+#[derive(Debug, Clone, Copy)]
+pub struct GridPalette {
+    pub bg_panel: Color,
+    pub bg_cell: Color,
+    pub bg_selected: Color,
+    pub fg_text: Color,
+    pub fg_muted: Color,
+}
+
+impl Default for GridPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl GridPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_panel: t.bg_panel,
+            bg_cell: t.bg_panel_alt,
+            bg_selected: t.bg_selected,
+            fg_text: t.fg_text,
+            fg_muted: t.fg_muted,
+        }
+    }
+}
+
+/// Una celda de la grilla. `content` es el `View` que el caller arma para
+/// el cuerpo (thumb/placeholder/ícono); el widget lo centra y, debajo,
+/// pinta `label` truncable si está. `on_click` se emite al clickear la
+/// celda completa.
+pub struct GridCell<Msg> {
+    pub content: View<Msg>,
+    pub label: Option<String>,
+    pub selected: bool,
+    pub on_click: Msg,
+}
+
+/// Especificación completa de la grilla a renderear. `cells` ya viene
+/// recortada a la ventana visible (ver [`ventana_visible`]); `cols` es el
+/// número de columnas de esa ventana.
+pub struct GridSpec<Msg> {
+    pub cells: Vec<GridCell<Msg>>,
+    pub cols: usize,
+    pub metrics: GridMetrics,
+    pub caption: Option<String>,
+    pub truncated_hint: Option<String>,
+    pub palette: GridPalette,
+}
+
+/// Compone la grilla como un `View<Msg>`. Agrupa `cells` en filas de
+/// `cols` celdas y las apila. El contenedor recorta (`clip`) para que las
+/// celdas no sangren a vecinos cuando el caller subestima el área.
+pub fn grid_view<Msg: Clone + 'static>(spec: GridSpec<Msg>) -> View<Msg> {
+    let GridSpec {
+        cells,
+        cols,
+        metrics,
+        caption,
+        truncated_hint,
+        palette,
+    } = spec;
+    let cols = cols.max(1);
+
+    let mut children: Vec<View<Msg>> = Vec::new();
+
+    if let Some(text) = caption {
+        children.push(barra_texto(text, 11.0, palette.fg_muted, 20.0));
+    }
+
+    // Agrupar en filas de `cols`. La última fila puede quedar incompleta.
+    let mut iter = cells.into_iter();
+    loop {
+        let fila: Vec<GridCell<Msg>> = iter.by_ref().take(cols).collect();
+        if fila.is_empty() {
+            break;
+        }
+        children.push(fila_view(fila, &metrics, &palette));
+    }
+
+    if let Some(text) = truncated_hint {
+        children.push(barra_texto(text, 10.0, palette.fg_muted, 16.0));
+    }
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        padding: Rect {
+            left: length(metrics.pad),
+            right: length(metrics.pad),
+            top: length(metrics.pad),
+            bottom: length(metrics.pad),
+        },
+        gap: Size {
+            width: length(0.0_f32),
+            height: length(metrics.gap),
+        },
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .clip(true)
+    .children(children)
+}
+
+fn fila_view<Msg: Clone + 'static>(
+    fila: Vec<GridCell<Msg>>,
+    m: &GridMetrics,
+    palette: &GridPalette,
+) -> View<Msg> {
+    let celdas: Vec<View<Msg>> = fila
+        .into_iter()
+        .map(|c| celda_view(c, m, palette))
+        .collect();
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(m.tile_h),
+        },
+        gap: Size {
+            width: length(m.gap),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(celdas)
+}
+
+fn celda_view<Msg: Clone + 'static>(
+    cell: GridCell<Msg>,
+    m: &GridMetrics,
+    palette: &GridPalette,
+) -> View<Msg> {
+    let bg = if cell.selected {
+        palette.bg_selected
+    } else {
+        palette.bg_cell
+    };
+
+    let mut hijos: Vec<View<Msg>> = Vec::with_capacity(2);
+    // Cuerpo de la celda: el content del caller, centrado, ocupa el alto
+    // restante (tile_h menos la franja de label).
+    hijos.push(
+        View::new(Style {
+            flex_grow: 1.0,
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(0.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(JustifyContent::Center),
+            ..Default::default()
+        })
+        .clip(true)
+        .children(vec![cell.content]),
+    );
+    if let Some(label) = cell.label {
+        hijos.push(
+            View::new(Style {
+                size: Size {
+                    width: percent(1.0_f32),
+                    height: length(18.0_f32),
+                },
+                padding: Rect {
+                    left: length(4.0_f32),
+                    right: length(4.0_f32),
+                    top: length(0.0_f32),
+                    bottom: length(0.0_f32),
+                },
+                ..Default::default()
+            })
+            .clip(true)
+            .text_aligned(label, 10.0, palette.fg_text, Alignment::Center),
+        );
+    }
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: length(m.tile_w),
+            height: length(m.tile_h),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .fill(bg)
+    .clip(true)
+    .children(hijos)
+    .on_click(cell.on_click)
+}
+
+fn barra_texto<Msg: Clone + 'static>(
+    text: String,
+    size: f32,
+    color: Color,
+    height: f32,
+) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(height),
+        },
+        padding: Rect {
+            left: length(4.0_f32),
+            right: length(4.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .text_aligned(text, size, color, Alignment::Start)
+}
+
+#[cfg(test)]
+mod pruebas {
+    use super::*;
+
+    fn metrics() -> GridMetrics {
+        GridMetrics {
+            tile_w: 80.0,
+            tile_h: 96.0,
+            gap: 8.0,
+            pad: 8.0,
+        }
+    }
+
+    #[test]
+    fn cols_se_deriva_del_ancho() {
+        let m = metrics();
+        // util_w = 400 - 16 + 8 = 392; paso = 88; 392/88 = 4.45 → 4.
+        let v = ventana_visible(100, 400.0, 300.0, 0, &m);
+        assert_eq!(v.cols, 4);
+        assert_eq!(v.total_rows, 25);
+    }
+
+    #[test]
+    fn ancho_minimo_da_al_menos_una_columna() {
+        let m = metrics();
+        let v = ventana_visible(10, 50.0, 300.0, 0, &m);
+        assert_eq!(v.cols, 1, "nunca menos de 1 columna");
+    }
+
+    #[test]
+    fn ventana_arriba_monta_filas_visibles_mas_margen() {
+        let m = metrics();
+        // util_h = 300 - 16 + 8 = 292; paso_h = 104; ceil(292/104)=3; +1 = 4.
+        let v = ventana_visible(100, 400.0, 300.0, 0, &m);
+        assert_eq!(v.filas_visibles, 4);
+        assert_eq!(v.first, 0);
+        // 4 filas × 4 cols = 16 items.
+        assert_eq!(v.count, 16);
+    }
+
+    #[test]
+    fn ventana_al_fondo_clampa_y_recorta_la_cola() {
+        let m = metrics();
+        // 100 items, 4 cols → 25 filas. Pedir fila 22 (cerca del fondo).
+        let v = ventana_visible(100, 400.0, 300.0, 22, &m);
+        assert_eq!(v.first_row, 22);
+        assert_eq!(v.first, 88);
+        // last_row = min(22+4, 25) = 25 → count = min(100,100) - 88 = 12.
+        assert_eq!(v.count, 12);
+    }
+
+    #[test]
+    fn scroll_mas_alla_del_fondo_se_clampa() {
+        let m = metrics();
+        let v = ventana_visible(100, 400.0, 300.0, 999, &m);
+        // total_rows 25 → max_first_row 24.
+        assert_eq!(v.first_row, 24);
+        assert_eq!(v.first, 96);
+        // Sólo la última fila: 100 - 96 = 4 items.
+        assert_eq!(v.count, 4);
+    }
+
+    #[test]
+    fn coleccion_vacia_no_monta_nada() {
+        let m = metrics();
+        let v = ventana_visible(0, 400.0, 300.0, 0, &m);
+        assert!(v.cols >= 1);
+        assert_eq!(v.total_rows, 0);
+        assert_eq!(v.count, 0);
+        assert_eq!(v.first, 0);
+    }
+
+    #[test]
+    fn ultima_fila_parcial_cuenta_completa_en_total_rows() {
+        let m = metrics();
+        // 10 items, 4 cols → 3 filas (la última con 2).
+        let v = ventana_visible(10, 400.0, 1000.0, 0, &m);
+        assert_eq!(v.cols, 4);
+        assert_eq!(v.total_rows, 3);
+        // Viewport alto: entran todas.
+        assert_eq!(v.count, 10);
+    }
+
+    #[test]
+    fn grid_view_agrupa_en_filas_sin_panicar() {
+        // Smoke: 7 celdas en 3 columnas → 3 filas (3+3+1). Sólo verifica
+        // que compone sin panicar y devuelve un View.
+        let cells: Vec<GridCell<i32>> = (0..7)
+            .map(|i| GridCell {
+                content: View::new(Style::default()),
+                label: Some(format!("img{i}")),
+                selected: i == 2,
+                on_click: i,
+            })
+            .collect();
+        let _v = grid_view(GridSpec {
+            cells,
+            cols: 3,
+            metrics: metrics(),
+            caption: Some("7 imágenes".into()),
+            truncated_hint: None,
+            palette: GridPalette::default(),
+        });
+    }
+}
diff --git a/widgets/list/Cargo.toml b/widgets/list/Cargo.toml
new file mode 100644
index 0000000..4b8d546
--- /dev/null
+++ b/widgets/list/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-list"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-list — lista vertical virtualizada para Llimphi: filas clicables, selección, caption opcional, recorte de overflow. El caller hace la virtualización (pasa sólo las filas visibles) y el widget las compone."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/list/LEEME.md b/widgets/list/LEEME.md
new file mode 100644
index 0000000..053c036
--- /dev/null
+++ b/widgets/list/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-list
+
+> Lista virtualizada para [llimphi](../../README.md).
+
+Renderiza sólo los items visibles. Selección single/multi, scroll programático, keyboard nav.
diff --git a/widgets/list/README.md b/widgets/list/README.md
new file mode 100644
index 0000000..1345bfb
--- /dev/null
+++ b/widgets/list/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-list
+
+> Virtualized list for [llimphi](../../README.md).
+
+Renders only visible items. Single/multi selection, programmatic scroll, keyboard nav.
diff --git a/widgets/list/src/lib.rs b/widgets/list/src/lib.rs
new file mode 100644
index 0000000..a5de315
--- /dev/null
+++ b/widgets/list/src/lib.rs
@@ -0,0 +1,201 @@
+//! `llimphi-widget-list` — lista vertical virtualizada.
+//!
+//! Compone una pila de filas con foco visual en la seleccionada y un Msg
+//! por click. Pensado como bloque reusable para file explorers, árboles
+//! lineales, paneles de log, listados de items, etc.
+//!
+//! El widget **no** maneja virtualización por sí mismo: el caller pasa
+//! únicamente las filas que deberían renderearse (las visibles según su
+//! propio `offset`/`scroll`). El widget se ocupa del resto: caption
+//! opcional con el conteo, fondo de selección, hint "… y N más" cuando
+//! `total > rows.len()`, y `clip` en el contenedor para que las filas no
+//! sangren a vecinos.
+//!
+//! Ejemplo:
+//!
+//! ```ignore
+//! let rows: Vec<ListRow<Msg>> = entries[offset..(offset + visible).min(entries.len())]
+//!     .iter()
+//!     .enumerate()
+//!     .map(|(i, e)| ListRow {
+//!         label: e.name.clone(),
+//!         selected: offset + i == selected,
+//!         on_click: Msg::Select(offset + i),
+//!     })
+//!     .collect();
+//!
+//! let panel = list_view(ListSpec {
+//!     rows,
+//!     total: entries.len(),
+//!     caption: Some(format!("{} entradas", entries.len())),
+//!     truncated_hint: (entries.len() > offset + rows.len())
+//!         .then(|| format!("… y {} más", entries.len() - offset - rows.len())),
+//!     row_height: 22.0,
+//!     palette: ListPalette::default(),
+//! });
+//! ```
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+
+/// Paleta de la lista. Los defaults son una variante dark con selección
+/// azulada — equivalente conceptual a `nahual_theme` en su tema oscuro.
+#[derive(Debug, Clone, Copy)]
+pub struct ListPalette {
+    pub bg_panel: Color,
+    pub bg_selected: Color,
+    pub fg_text: Color,
+    pub fg_muted: Color,
+}
+
+impl Default for ListPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl ListPalette {
+    /// Construye la paleta desde un `Theme` semántico.
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_panel: t.bg_panel,
+            bg_selected: t.bg_selected,
+            fg_text: t.fg_text,
+            fg_muted: t.fg_muted,
+        }
+    }
+}
+
+/// Una fila a renderear. `selected` cambia el fondo; `on_click` se emite al
+/// hacer click sobre cualquier parte de la fila.
+pub struct ListRow<Msg> {
+    pub label: String,
+    pub selected: bool,
+    pub on_click: Msg,
+}
+
+/// Especificación completa de la lista a renderear.
+pub struct ListSpec<Msg> {
+    /// Filas a renderear, ya filtradas a la ventana visible.
+    pub rows: Vec<ListRow<Msg>>,
+    /// Total de items del modelo (usado para el caption — la lista
+    /// mostrada puede ser un subconjunto virtualizado).
+    pub total: usize,
+    /// Caption opcional arriba de las filas (p. ej. "120 entradas").
+    pub caption: Option<String>,
+    /// Mensaje opcional al pie ("… y 12 más") cuando hay items fuera de
+    /// la ventana visible. El caller decide qué texto usar.
+    pub truncated_hint: Option<String>,
+    /// Altura de cada fila en pixels.
+    pub row_height: f32,
+    pub palette: ListPalette,
+}
+
+/// Compone la lista como un `View<Msg>`. El contenedor tiene `clip = true`
+/// para evitar overflow visual cuando el llamador subestima el tamaño
+/// disponible — las filas que excedan el área del panel se recortan.
+pub fn list_view<Msg: Clone + 'static>(spec: ListSpec<Msg>) -> View<Msg> {
+    let ListSpec {
+        rows,
+        total: _,
+        caption,
+        truncated_hint,
+        row_height,
+        palette,
+    } = spec;
+
+    let mut children: Vec<View<Msg>> = Vec::with_capacity(rows.len() + 2);
+
+    if let Some(text) = caption {
+        children.push(
+            View::new(Style {
+                size: Size {
+                    width: percent(1.0_f32),
+                    height: length(20.0_f32),
+                },
+                padding: Rect {
+                    left: length(10.0_f32),
+                    right: length(10.0_f32),
+                    top: length(0.0_f32),
+                    bottom: length(0.0_f32),
+                },
+                align_items: Some(AlignItems::Center),
+                ..Default::default()
+            })
+            .text_aligned(text, 10.0, palette.fg_muted, Alignment::Start),
+        );
+    }
+
+    for row in rows {
+        children.push(row_view(row, row_height, &palette));
+    }
+
+    if let Some(text) = truncated_hint {
+        children.push(
+            View::new(Style {
+                size: Size {
+                    width: percent(1.0_f32),
+                    height: length(16.0_f32),
+                },
+                padding: Rect {
+                    left: length(10.0_f32),
+                    right: length(10.0_f32),
+                    top: length(0.0_f32),
+                    bottom: length(0.0_f32),
+                },
+                ..Default::default()
+            })
+            .text_aligned(text, 10.0, palette.fg_muted, Alignment::Start),
+        );
+    }
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        padding: Rect {
+            left: length(0.0_f32),
+            right: length(0.0_f32),
+            top: length(6.0_f32),
+            bottom: length(6.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .clip(true)
+    .children(children)
+}
+
+fn row_view<Msg: Clone + 'static>(row: ListRow<Msg>, height: f32, palette: &ListPalette) -> View<Msg> {
+    let bg = if row.selected {
+        palette.bg_selected
+    } else {
+        palette.bg_panel
+    };
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(height),
+        },
+        padding: Rect {
+            left: length(10.0_f32),
+            right: length(10.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .fill(bg)
+    .text_aligned(row.label, 12.0, palette.fg_text, Alignment::Start)
+    .on_click(row.on_click)
+}
diff --git a/widgets/menubar/Cargo.toml b/widgets/menubar/Cargo.toml
new file mode 100644
index 0000000..d71f673
--- /dev/null
+++ b/widgets/menubar/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name = "llimphi-widget-menubar"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-menubar — barra de menú principal in-window (Archivo/Editar/Ver/Ayuda) que cualquier app Llimphi monta a partir de un app_bus::AppMenu. menubar_view() pinta la fila de títulos; menubar_overlay() el dropdown (vía context-menu) para App::view_overlay. Decoplado del Surface del launcher: sirve dentro de la ventana de cada app."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-button = { workspace = true }
+llimphi-widget-context-menu = { workspace = true }
+app-bus = { path = "../../../../shared/app-bus" }
diff --git a/widgets/menubar/src/lib.rs b/widgets/menubar/src/lib.rs
new file mode 100644
index 0000000..abd178d
--- /dev/null
+++ b/widgets/menubar/src/lib.rs
@@ -0,0 +1,334 @@
+//! `llimphi-widget-menubar` — la barra de menú principal de una app.
+//!
+//! Toda app Llimphi declara un [`app_bus::AppMenu`] (Archivo / Editar /
+//! Ver / Ayuda …) y lo monta in-window con este widget. Es el gemelo de
+//! la barra global de [`launcher_llimphi`], pero vive **dentro** de la
+//! ventana de la app — para las apps que corren standalone y no bajo el
+//! shell del launcher.
+//!
+//! Sin estado, al estilo Llimphi: el `Model` del host lleva qué menú raíz
+//! está abierto (`Option<usize>`); el widget aplana el `AppMenu` y emite
+//! `Msg` en cada interacción.
+//!
+//! Dos entradas:
+//! - [`menubar_view`] → la fila de títulos, para el tope de `App::view`.
+//! - [`menubar_overlay`] → el dropdown del menú abierto, para
+//!   `App::view_overlay` (devolvé `None` si no hay nada abierto).
+//!
+//! El `command` de cada ítem es el id que la app entiende (convención
+//! `menu.<verbo>`, ver [`app_bus::AppMenu::standard`]); el widget lo
+//! rebota por `on_command`.
+
+#![forbid(unsafe_code)]
+
+use std::sync::Arc;
+
+use app_bus::{AppMenu, Menu};
+use llimphi_theme::Theme;
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, percent, AlignItems, FlexDirection, JustifyContent, Position, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_widget_button::{button_styled, ButtonPalette};
+use llimphi_widget_context_menu::{
+    context_menu_view_ex, step_active, ContextMenuExtras, ContextMenuItem, ContextMenuPalette,
+    ContextMenuSpec,
+};
+
+type MsgFromMenu<Msg> = Arc<dyn Fn(Option<usize>) -> Msg + Send + Sync>;
+type MsgFromStr<Msg> = Arc<dyn Fn(&str) -> Msg + Send + Sync>;
+
+/// Todo lo que el render necesita. El host lo arma en cada `view()`.
+pub struct MenuBarSpec<'a, Msg: Clone + 'static> {
+    /// El menú a pintar (típicamente `AppMenu::standard()` + menús propios).
+    pub menu: &'a AppMenu,
+    /// Índice del menú raíz abierto (estado del host). `None` = ninguno.
+    pub open: Option<usize>,
+    pub theme: &'a Theme,
+    /// Tamaño de la ventana — para clampear el dropdown.
+    pub viewport: (f32, f32),
+    /// Alto de la barra (px). Usar [`DEFAULT_HEIGHT`] si no hay razón.
+    pub height: f32,
+    /// Abrir/cerrar un menú raíz por índice (`None` = cerrar).
+    pub on_open: MsgFromMenu<Msg>,
+    /// command id → Msg, al elegir un ítem.
+    pub on_command: MsgFromStr<Msg>,
+}
+
+/// Alto recomendado de la barra de menú.
+pub const DEFAULT_HEIGHT: f32 = 30.0;
+
+fn title_palette(theme: &Theme) -> ButtonPalette {
+    ButtonPalette::from_theme(theme)
+}
+
+fn title_palette_active(theme: &Theme) -> ButtonPalette {
+    let base = ButtonPalette::from_theme(theme);
+    ButtonPalette {
+        bg: theme.accent,
+        bg_hover: theme.accent,
+        fg: theme.bg_panel,
+        radius: base.radius,
+    }
+}
+
+/// La fila de títulos (Archivo / Editar / …). Click sobre un título
+/// togglea su dropdown vía `on_open`. El abierto se resalta con el accent.
+/// `hover_switch = true` agrega `on_pointer_enter` a cada título para que,
+/// con un menú ya abierto, pasar el mouse sobre otro título cambie de menú
+/// (comportamiento clásico de barra de menú) — sólo se usa en el overlay,
+/// donde los títulos quedan por encima del scrim y son hovereables.
+fn titles_row<Msg: Clone + 'static>(spec: &MenuBarSpec<Msg>, hover_switch: bool) -> View<Msg> {
+    let pal = title_palette(spec.theme);
+    let pal_on = title_palette_active(spec.theme);
+
+    let mut titles: Vec<View<Msg>> = Vec::with_capacity(spec.menu.menus.len());
+    for (i, root) in spec.menu.menus.iter().enumerate() {
+        let open = spec.open == Some(i);
+        let target = if open { None } else { Some(i) };
+        let mut title = button_styled(
+            root.label.clone(),
+            title_style(),
+            Alignment::Center,
+            if open { &pal_on } else { &pal },
+            (spec.on_open)(target),
+        );
+        // Con un menú abierto, hover sobre otro título lo abre.
+        if hover_switch && !open {
+            title = title.on_pointer_enter((spec.on_open)(Some(i)));
+        }
+        titles.push(title);
+    }
+
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(spec.height),
+        },
+        flex_shrink: 0.0,
+        flex_direction: FlexDirection::Row,
+        align_items: Some(AlignItems::Center),
+        padding: Rect {
+            left: length(6.0_f32),
+            right: length(6.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        gap: Size {
+            width: length(2.0_f32),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(spec.theme.bg_panel_alt)
+    .children(titles)
+}
+
+/// La barra de menú principal — primer hijo del column raíz de `view()`.
+pub fn menubar_view<Msg: Clone + 'static>(spec: &MenuBarSpec<Msg>) -> View<Msg> {
+    titles_row(spec, false)
+}
+
+/// Aplana un menú raíz al par alineado `(items, commands)` que consume el
+/// context-menu (los separadores `separator_before` se insertan como
+/// filas y llevan `command = None`). Es la única fuente de verdad del
+/// orden de filas — la navegación por teclado y el render comparten esto.
+fn dropdown_items(root: &Menu) -> (Vec<ContextMenuItem>, Vec<Option<String>>) {
+    let mut items: Vec<ContextMenuItem> = Vec::new();
+    let mut commands: Vec<Option<String>> = Vec::new();
+    for (k, src) in root.items.iter().enumerate() {
+        if src.separator_before && k != 0 {
+            items.push(ContextMenuItem::separator());
+            commands.push(None);
+        }
+        let mut cm = ContextMenuItem::action(src.label.clone());
+        if let Some(s) = &src.shortcut {
+            cm = cm.with_shortcut(s.clone());
+        }
+        if let Some(ic) = &src.icon {
+            cm = cm.icon(ic.clone());
+        }
+        if !src.enabled {
+            cm = cm.disabled();
+        }
+        items.push(cm);
+        commands.push(Some(src.command.clone()));
+    }
+    (items, commands)
+}
+
+/// El dropdown del menú abierto, para `App::view_overlay`. `None` si no
+/// hay menú abierto. Hospeda además una copia de la fila de títulos por
+/// encima del scrim: así, con el menú abierto, mover el mouse a otro
+/// título cambia de menú (hover-switch).
+pub fn menubar_overlay<Msg: Clone + 'static>(spec: &MenuBarSpec<Msg>) -> Option<View<Msg>> {
+    menubar_overlay_core(spec, usize::MAX, 1.0)
+}
+
+/// Como [`menubar_overlay`] pero con `active` (fila resaltada por teclado;
+/// `usize::MAX` = ninguna) y `appear` (0..1, animación de aparición — útil
+/// para que el dropdown se deslice/funda al cambiar de menú por hover o
+/// flechas). La app guarda el `active` y un `Tween` para el `appear`.
+pub fn menubar_overlay_animated<Msg: Clone + 'static>(
+    spec: &MenuBarSpec<Msg>,
+    active: usize,
+    appear: f32,
+) -> Option<View<Msg>> {
+    menubar_overlay_core(spec, active, appear)
+}
+
+fn menubar_overlay_core<Msg: Clone + 'static>(
+    spec: &MenuBarSpec<Msg>,
+    active: usize,
+    appear: f32,
+) -> Option<View<Msg>> {
+    let idx = spec.open?;
+    let root = spec.menu.menus.get(idx)?;
+
+    let mut x = 6.0_f32;
+    for prev in spec.menu.menus.iter().take(idx) {
+        x += approx_title_width(&prev.label);
+    }
+
+    let (items, commands) = dropdown_items(root);
+
+    let on_command = spec.on_command.clone();
+    let on_open = spec.on_open.clone();
+    let commands = Arc::new(commands);
+    let on_pick: Arc<dyn Fn(usize) -> Msg + Send + Sync> = Arc::new(move |i: usize| {
+        match commands.get(i).and_then(|c| c.clone()) {
+            Some(cmd) => (on_command)(&cmd),
+            None => (on_open)(None),
+        }
+    });
+
+    let dropdown = context_menu_view_ex(
+        ContextMenuSpec {
+            anchor: (x, spec.height),
+            viewport: spec.viewport,
+            header: Some(root.label.clone()),
+            items,
+            active,
+            on_pick,
+            on_dismiss: (spec.on_open)(None),
+            palette: ContextMenuPalette::from_theme(spec.theme),
+        },
+        ContextMenuExtras {
+            appear,
+            ..ContextMenuExtras::default()
+        },
+    );
+
+    // Fila de títulos por encima del scrim del dropdown: queda hovereable
+    // para cambiar de menú con el mouse. Absoluta al tope para no consumir
+    // el layout; se pinta después del dropdown ⇒ arriba en z-order ⇒ gana
+    // el hit-test.
+    let titles = View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(0.0_f32),
+            top: length(0.0_f32),
+            right: auto(),
+            bottom: auto(),
+        },
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(spec.height),
+        },
+        ..Default::default()
+    })
+    .children(vec![titles_row(spec, true)]);
+
+    Some(
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            ..Default::default()
+        })
+        .children(vec![dropdown, titles]),
+    )
+}
+
+/// Navegación por teclado dentro del dropdown del menú `menu_idx`: dado el
+/// `active` actual y la dirección (`+1` baja, `-1` sube), devuelve el
+/// próximo índice de fila válido (saltea separadores y deshabilitados).
+/// `usize::MAX` si no hay menú abierto o sin filas elegibles.
+pub fn menubar_nav(menu: &AppMenu, menu_idx: usize, active: usize, dir: i32) -> usize {
+    let Some(root) = menu.menus.get(menu_idx) else {
+        return usize::MAX;
+    };
+    let (items, _) = dropdown_items(root);
+    step_active(&items, active, dir)
+}
+
+/// El `command` de la fila `active` del menú `menu_idx` (para ejecutar con
+/// Enter). `None` si el índice no es una fila-acción.
+pub fn menubar_command_at(menu: &AppMenu, menu_idx: usize, active: usize) -> Option<String> {
+    let root = menu.menus.get(menu_idx)?;
+    let (_, commands) = dropdown_items(root);
+    commands.get(active).cloned().flatten()
+}
+
+fn title_style() -> Style {
+    Style {
+        size: Size {
+            width: llimphi_ui::llimphi_layout::taffy::prelude::auto(),
+            height: length(24.0_f32),
+        },
+        flex_shrink: 0.0,
+        padding: Rect {
+            left: length(10.0_f32),
+            right: length(10.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        ..Default::default()
+    }
+}
+
+/// Ancho aproximado de un título — mismo criterio que `launcher-llimphi`
+/// para anclar el dropdown sin medir la fuente.
+fn approx_title_width(label: &str) -> f32 {
+    label.chars().count() as f32 * 8.0 + 22.0
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn overlay_none_si_no_hay_abierto() {
+        let menu = AppMenu::standard();
+        let spec = MenuBarSpec {
+            menu: &menu,
+            open: None,
+            theme: &Theme::dark(),
+            viewport: (800.0, 600.0),
+            height: DEFAULT_HEIGHT,
+            on_open: Arc::new(|_| 0u8),
+            on_command: Arc::new(|_| 1u8),
+        };
+        assert!(menubar_overlay(&spec).is_none());
+    }
+
+    #[test]
+    fn overlay_some_si_hay_abierto() {
+        let menu = AppMenu::standard();
+        let spec = MenuBarSpec {
+            menu: &menu,
+            open: Some(0),
+            theme: &Theme::dark(),
+            viewport: (800.0, 600.0),
+            height: DEFAULT_HEIGHT,
+            on_open: Arc::new(|_| 0u8),
+            on_command: Arc::new(|_| 1u8),
+        };
+        assert!(menubar_overlay(&spec).is_some());
+    }
+}
diff --git a/widgets/modal/Cargo.toml b/widgets/modal/Cargo.toml
new file mode 100644
index 0000000..3251003
--- /dev/null
+++ b/widgets/modal/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-widget-modal"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-modal — diálogo genérico (título + body arbitrario + botones primary/cancel/destructive) con scrim y centrado. Para menús contextuales usar llimphi-widget-context-menu."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-panel = { workspace = true }
diff --git a/widgets/modal/src/lib.rs b/widgets/modal/src/lib.rs
new file mode 100644
index 0000000..79bc03d
--- /dev/null
+++ b/widgets/modal/src/lib.rs
@@ -0,0 +1,319 @@
+//! `llimphi-widget-modal` — diálogo genérico centrado con scrim.
+//!
+//! Distinto del `context-menu` (chico, anclado a un click): el modal
+//! ocupa una región central de tamaño configurable, presenta un título,
+//! un cuerpo arbitrario (lo arma la app) y una barra de botones.
+//!
+//! Uso típico:
+//! 1. La app guarda `Option<ModalState>` en su modelo.
+//! 2. `view_overlay` devuelve `Some(modal_view(spec))` cuando hay
+//!    state, `None` cuando se cerró.
+//! 3. La app captura `Esc` en `on_key` → cierra; `Enter` → primary.
+//!
+//! Tres severidades de botón:
+//! - `Primary` — verde/accent, acción principal.
+//! - `Cancel` — neutral, descarta.
+//! - `Destructive` — rojo, acción irreversible (eliminar, etc).
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, percent, FlexDirection, Position, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_theme::{alpha, radius, Theme};
+use llimphi_widget_panel::{panel_signature_painter, PanelStyle};
+
+/// Paleta del modal.
+#[derive(Debug, Clone, Copy)]
+pub struct ModalPalette {
+    /// Color del scrim. El alpha se usa como **promedio** del vignette
+    /// radial: el centro (debajo del panel) queda ~25% más claro y las
+    /// esquinas ~40% más oscuras, manteniendo la densidad media igual a
+    /// lo que pidió el caller. Esto focaliza al modal sin "encerrarlo".
+    pub scrim: Color,
+    /// Firma visual del panel — gradient sutil + hairline accent en el
+    /// top edge. La que vuelve consistente el "look gioser" en todos
+    /// los modales y overlays.
+    pub panel: PanelStyle,
+    pub border: Color,
+    pub fg_title: Color,
+    pub fg_text: Color,
+    pub bg_btn: Color,
+    pub bg_btn_hover: Color,
+    pub fg_btn: Color,
+    pub bg_primary: Color,
+    pub fg_primary: Color,
+    pub bg_destructive: Color,
+    pub fg_destructive: Color,
+}
+
+impl ModalPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            scrim: Color::from_rgba8(0, 0, 0, alpha::SCRIM),
+            panel: PanelStyle::from_theme_large(t),
+            border: t.border,
+            fg_title: t.fg_text,
+            fg_text: t.fg_muted,
+            bg_btn: t.bg_button,
+            bg_btn_hover: t.bg_button_hover,
+            fg_btn: t.fg_text,
+            bg_primary: t.accent,
+            fg_primary: t.bg_app,
+            bg_destructive: t.fg_destructive,
+            fg_destructive: t.bg_app,
+        }
+    }
+}
+
+/// Severidad de un botón del modal.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum ButtonKind {
+    Primary,
+    Cancel,
+    Destructive,
+}
+
+/// Spec de un botón. `label` se renderiza; `msg` se dispatcha al click.
+#[derive(Clone)]
+pub struct ModalButton<Msg> {
+    pub label: String,
+    pub kind: ButtonKind,
+    pub msg: Msg,
+}
+
+impl<Msg> ModalButton<Msg> {
+    pub fn primary(label: impl Into<String>, msg: Msg) -> Self {
+        Self { label: label.into(), kind: ButtonKind::Primary, msg }
+    }
+    pub fn cancel(label: impl Into<String>, msg: Msg) -> Self {
+        Self { label: label.into(), kind: ButtonKind::Cancel, msg }
+    }
+    pub fn destructive(label: impl Into<String>, msg: Msg) -> Self {
+        Self { label: label.into(), kind: ButtonKind::Destructive, msg }
+    }
+}
+
+/// Spec completo del modal.
+pub struct ModalSpec<Msg: Clone + 'static> {
+    pub title: String,
+    /// Cuerpo libre — la app construye un `View` con lo que quiera
+    /// mostrar (texto, form, lista). Se pinta entre título y botones.
+    pub body: View<Msg>,
+    pub buttons: Vec<ModalButton<Msg>>,
+    /// Tamaño del panel (clampea al viewport con margen).
+    pub size: (f32, f32),
+    pub viewport: (f32, f32),
+    /// Msg al hacer click en el scrim o presionar Esc (la app maneja
+    /// Esc en su `on_key`; este Msg es el del click).
+    pub on_dismiss: Msg,
+    pub palette: ModalPalette,
+}
+
+const TITLE_H: f32 = 40.0;
+const BUTTONS_H: f32 = 56.0;
+const TITLE_FONT: f32 = 14.0;
+const BTN_FONT: f32 = 12.5;
+const PAD: f32 = 16.0;
+
+pub fn modal_view<Msg: Clone + 'static>(spec: ModalSpec<Msg>) -> View<Msg> {
+    let ModalSpec {
+        title,
+        body,
+        buttons,
+        size,
+        viewport,
+        on_dismiss,
+        palette,
+    } = spec;
+
+    let (w, h) = (
+        size.0.min(viewport.0 - 32.0).max(200.0),
+        size.1.min(viewport.1 - 32.0).max(140.0),
+    );
+    let x = ((viewport.0 - w) * 0.5).max(0.0);
+    let y = ((viewport.1 - h) * 0.5).max(0.0);
+
+    // Header — título a la izquierda; al borde inferior, una línea
+    // separadora se logra con un nodo de 1px.
+    let header = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(TITLE_H),
+        },
+        padding: Rect {
+            left: length(PAD),
+            right: length(PAD),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .text_aligned(title, TITLE_FONT, palette.fg_title, Alignment::Start);
+
+    let separator = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(1.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.border);
+
+    // Body — flex_grow para ocupar todo el espacio sobrante.
+    let body_wrap = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: auto(),
+        },
+        flex_grow: 1.0,
+        padding: Rect {
+            left: length(PAD),
+            right: length(PAD),
+            top: length(PAD),
+            bottom: length(PAD),
+        },
+        ..Default::default()
+    })
+    .children(vec![body]);
+
+    // Botones — flex-row justify-end con gap.
+    let btn_children: Vec<View<Msg>> = buttons
+        .into_iter()
+        .map(|b| button_view(b, &palette))
+        .collect();
+    let buttons_row = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(BUTTONS_H),
+        },
+        flex_direction: FlexDirection::Row,
+        justify_content: Some(JustifyContent::FlexEnd),
+        align_items: Some(AlignItems::Center),
+        padding: Rect {
+            left: length(PAD),
+            right: length(PAD),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        gap: Size {
+            width: length(8.0_f32),
+            height: length(0.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(btn_children);
+
+    let panel = View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(x),
+            top: length(y),
+            right: auto(),
+            bottom: auto(),
+        },
+        size: Size {
+            width: length(w),
+            height: length(h),
+        },
+        flex_direction: FlexDirection::Column,
+        ..Default::default()
+    })
+    .paint_with(panel_signature_painter(palette.panel))
+    .radius(palette.panel.radius)
+    .clip(true)
+    .children(vec![header, separator, body_wrap, buttons_row]);
+
+    let scrim_base = palette.scrim;
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .paint_with(move |scene, _ts, rect| {
+        use llimphi_ui::llimphi_raster::kurbo::{Affine, Point, Rect as KurboRect};
+        use llimphi_ui::llimphi_raster::peniko::{color::AlphaColor, Fill, Gradient};
+
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+        // Vignette: el centro toma alpha = base * 0.75 (más translúcido,
+        // deja ver lo que hay detrás del modal); las esquinas alpha =
+        // base * 1.4 (más sólido, oscurece los bordes). El promedio
+        // visual queda cerca de `base` original, así la densidad pedida
+        // por el caller se preserva.
+        let [r, g, b, base_a] = scrim_base.components;
+        let inner: Color =
+            AlphaColor::new([r, g, b, (base_a * 0.75).clamp(0.0, 1.0)]);
+        let outer: Color =
+            AlphaColor::new([r, g, b, (base_a * 1.4).clamp(0.0, 1.0)]);
+
+        let cx = rect.x as f64 + rect.w as f64 * 0.5;
+        let cy = rect.y as f64 + rect.h as f64 * 0.5;
+        let diag_half = (((rect.w as f64).powi(2) + (rect.h as f64).powi(2)).sqrt() * 0.5) as f32;
+        let gradient = Gradient::new_radial(Point::new(cx, cy), diag_half)
+            .with_stops([inner, outer].as_slice());
+        let full = KurboRect::new(
+            rect.x as f64,
+            rect.y as f64,
+            (rect.x + rect.w) as f64,
+            (rect.y + rect.h) as f64,
+        );
+        scene.fill(Fill::NonZero, Affine::IDENTITY, &gradient, None, &full);
+    })
+    .on_click(on_dismiss)
+    .children(vec![panel])
+}
+
+fn button_view<Msg: Clone + 'static>(btn: ModalButton<Msg>, palette: &ModalPalette) -> View<Msg> {
+    let (bg, fg, hover) = match btn.kind {
+        ButtonKind::Primary => (palette.bg_primary, palette.fg_primary, brighten(palette.bg_primary, 0.15)),
+        ButtonKind::Cancel => (palette.bg_btn, palette.fg_btn, palette.bg_btn_hover),
+        ButtonKind::Destructive => (palette.bg_destructive, palette.fg_destructive, brighten(palette.bg_destructive, 0.15)),
+    };
+    let label = btn.label.clone();
+    View::new(Style {
+        size: Size {
+            width: length(label.chars().count() as f32 * 7.5 + 28.0),
+            height: length(32.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        padding: Rect {
+            left: length(12.0_f32),
+            right: length(12.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(bg)
+    .hover_fill(hover)
+    .radius(radius::SM)
+    .text_aligned(label, BTN_FONT, fg, Alignment::Center)
+    .on_click(btn.msg)
+}
+
+/// Aclara un color sumando `delta` a cada componente RGB. Útil para
+/// derivar un hover state del color base sin tener que definirlo aparte.
+fn brighten(c: Color, delta: f32) -> Color {
+    let [r, g, b, a] = c.components;
+    use llimphi_ui::llimphi_raster::peniko::color::AlphaColor;
+    AlphaColor::new([
+        (r + delta).clamp(0.0, 1.0),
+        (g + delta).clamp(0.0, 1.0),
+        (b + delta).clamp(0.0, 1.0),
+        a,
+    ])
+}
diff --git a/widgets/navigator/Cargo.toml b/widgets/navigator/Cargo.toml
new file mode 100644
index 0000000..954ee0f
--- /dev/null
+++ b/widgets/navigator/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+name = "llimphi-widget-navigator"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-navigator — navegador data-agnóstico de nodos (Mónada/Dir/Archivo) en dos modos conmutables: árbol y grafo; click selecciona, right-click abre."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-tree = { workspace = true }
+llimphi-widget-nodegraph = { workspace = true }
+
+[dev-dependencies]
+llimphi-widget-segmented = { workspace = true }
diff --git a/widgets/navigator/examples/navigator_demo.rs b/widgets/navigator/examples/navigator_demo.rs
new file mode 100644
index 0000000..a5fb121
--- /dev/null
+++ b/widgets/navigator/examples/navigator_demo.rs
@@ -0,0 +1,222 @@
+//! Showcase de `llimphi-widget-navigator`: un bosque de "Mónadas" con sus
+//! archivos, conmutable entre **árbol** y **grafo** con un control
+//! segmentado. Click selecciona; click en el chevron expande/colapsa;
+//! right-click "abre" (acá sólo registra el id en el header).
+//!
+//! Corré con:
+//! `cargo run -p llimphi-widget-navigator --example navigator_demo --release`.
+
+use std::collections::HashSet;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{App, Handle, View};
+use llimphi_theme::Theme;
+use llimphi_widget_navigator::{
+    navigator_view, NavId, NavKind, NavMode, NavNode, NavPalette, NavSpec,
+};
+use llimphi_widget_segmented::{segmented_view, SegmentedPalette};
+
+#[derive(Clone)]
+enum Msg {
+    Toggle(NavId),
+    Select(NavId),
+    Open(NavId),
+    SetMode(usize),
+}
+
+struct Model {
+    expanded: HashSet<NavId>,
+    selected: Option<NavId>,
+    mode: NavMode,
+    last_open: Option<NavId>,
+}
+
+struct Showcase;
+
+/// Bosque de demo: tres Mónadas (clusters de nouser), cada una con sus
+/// archivos miembros.
+fn forest() -> Vec<NavNode> {
+    vec![
+        NavNode::branch(
+            1,
+            "src · código rust",
+            NavKind::Monad,
+            vec![
+                NavNode::leaf(11, "lib.rs", NavKind::File),
+                NavNode::leaf(12, "config.rs", NavKind::File),
+                NavNode::branch(
+                    13,
+                    "widgets/",
+                    NavKind::Dir,
+                    vec![
+                        NavNode::leaf(131, "tree.rs", NavKind::File),
+                        NavNode::leaf(132, "navigator.rs", NavKind::File),
+                    ],
+                ),
+            ],
+        ),
+        NavNode::branch(
+            2,
+            "docs · markdown",
+            NavKind::Monad,
+            vec![
+                NavNode::leaf(21, "README.md", NavKind::File),
+                NavNode::leaf(22, "SDD.md", NavKind::File),
+            ],
+        ),
+        NavNode::branch(
+            3,
+            "assets · imágenes",
+            NavKind::Monad,
+            vec![
+                NavNode::leaf(31, "logo.png", NavKind::File),
+                NavNode::leaf(32, "icon.svg", NavKind::File),
+            ],
+        ),
+    ]
+}
+
+impl App for Showcase {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · navigator showcase"
+    }
+
+    fn initial_size() -> (u32, u32) {
+        (520, 680)
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        let mut expanded = HashSet::new();
+        expanded.insert(1);
+        expanded.insert(13);
+        Model {
+            expanded,
+            selected: None,
+            mode: NavMode::Tree,
+            last_open: None,
+        }
+    }
+
+    fn update(model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
+        let mut m = model;
+        match msg {
+            Msg::Toggle(id) => {
+                if !m.expanded.remove(&id) {
+                    m.expanded.insert(id);
+                }
+            }
+            Msg::Select(id) => m.selected = Some(id),
+            Msg::Open(id) => m.last_open = Some(id),
+            Msg::SetMode(i) => m.mode = NavMode::from_index(i),
+        }
+        m
+    }
+
+    fn view(model: &Model) -> View<Msg> {
+        let theme = Theme::dark();
+        let palette = NavPalette::from_theme(&theme);
+
+        // Toggle de modo.
+        let toggle = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(36.0_f32),
+            },
+            padding: Rect {
+                left: length(8.0_f32),
+                right: length(8.0_f32),
+                top: length(6.0_f32),
+                bottom: length(2.0_f32),
+            },
+            ..Default::default()
+        })
+        .children(vec![segmented_view(
+            &NavMode::LABELS,
+            model.mode.index(),
+            Msg::SetMode,
+            &SegmentedPalette::from_theme(&theme),
+        )]);
+
+        let roots = forest();
+        let nav = navigator_view(
+            NavSpec {
+                roots: &roots,
+                mode: model.mode,
+                selected: model.selected,
+                palette,
+                guides: true,
+            },
+            {
+                let expanded = model.expanded.clone();
+                move |id| expanded.contains(&id)
+            },
+            Msg::Toggle,
+            Msg::Select,
+            Some(Msg::Open),
+        );
+
+        let nav_pane = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            flex_grow: 1.0,
+            ..Default::default()
+        })
+        .children(vec![nav]);
+
+        let status = format!(
+            "modo: {}   ·   sel: {}   ·   abrir (right-click): {}",
+            match model.mode {
+                NavMode::Tree => "árbol",
+                NavMode::Graph => "grafo",
+            },
+            model
+                .selected
+                .map(|i| i.to_string())
+                .unwrap_or_else(|| "—".into()),
+            model
+                .last_open
+                .map(|i| i.to_string())
+                .unwrap_or_else(|| "—".into()),
+        );
+        let footer = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(26.0_f32),
+            },
+            padding: Rect {
+                left: length(12.0_f32),
+                right: length(12.0_f32),
+                top: length(0.0_f32),
+                bottom: length(0.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            ..Default::default()
+        })
+        .fill(theme.bg_panel_alt)
+        .text_aligned(status, 12.0, theme.fg_muted, Alignment::Start);
+
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(theme.bg_app)
+        .children(vec![toggle, nav_pane, footer])
+    }
+}
+
+fn main() {
+    llimphi_ui::run::<Showcase>();
+}
diff --git a/widgets/navigator/src/lib.rs b/widgets/navigator/src/lib.rs
new file mode 100644
index 0000000..bec3718
--- /dev/null
+++ b/widgets/navigator/src/lib.rs
@@ -0,0 +1,626 @@
+//! `llimphi-widget-navigator` — navegador **data-agnóstico** de nodos en
+//! dos modos conmutables: **árbol** (`tree`) y **grafo** (`nodegraph`).
+//!
+//! Nació para que `pata` muestre las **Mónadas** de nouser y sus archivos
+//! en un sidebar, pero el widget no sabe de nouser: recibe un bosque de
+//! [`NavNode`]s (id opaco + label + [`NavKind`] + hijos) y emite `Msg`s al
+//! interactuar. El caller mapea cada `id` a lo suyo (un `MonadId`, un path)
+//! y decide qué hacer al seleccionar/abrir.
+//!
+//! Igual que el resto de widgets Llimphi, es **render-only y stateless**:
+//! el estado (qué nodos están expandidos, cuál está seleccionado, en qué
+//! modo está) vive en el `Model` del App; el widget sólo pinta y avisa.
+//!
+//! - **Árbol** — reusa [`llimphi_widget_tree`]. El navegador aplana el
+//!   bosque respetando `is_expanded`, dibuja un icono por [`NavKind`] entre
+//!   el chevron y el label, y cablea toggle / select / context por fila.
+//! - **Grafo** — reusa [`llimphi_widget_nodegraph`]. Coloca los nodos
+//!   visibles en columnas por profundidad, con cables de **contención**
+//!   (padre→hijo). El nodo seleccionado se resalta; arrastrar un nodo lo
+//!   selecciona; el right-click abre el menú contextual.
+//!
+//! ```ignore
+//! navigator_view(
+//!     NavSpec { roots: &model.nodes, mode: model.mode,
+//!               selected: model.selected, palette, guides: true },
+//!     |id| model.expanded.contains(&id),
+//!     Msg::Toggle, Msg::Select, Some(Msg::Open),
+//! )
+//! ```
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{Size, Style},
+    AlignItems, JustifyContent,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::{DragPhase, View};
+use llimphi_theme::Theme;
+use llimphi_widget_nodegraph::{
+    nodegraph_view_styled, NodeId, NodeSpec, NodeTint, NodegraphMetrics, NodegraphPalette, Wire,
+};
+use llimphi_widget_tree::{tree_view, TreePalette, TreeRow, TreeSpec};
+
+/// Identificador opaco de un nodo. El caller lo asigna y lo recibe de vuelta
+/// sin que el widget lo interprete (típicamente un índice a su propio mapa
+/// `id → MonadId | PathBuf`).
+pub type NavId = u64;
+
+/// Naturaleza de un nodo — sólo para elegir su icono y tinte. El widget no
+/// asume semántica de dominio más allá de esto.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum NavKind {
+    /// Una Mónada (cluster semántico de nouser). Diamante de acento.
+    Monad,
+    /// Una agrupación intermedia (carpeta lógica, categoría). Cuadrado.
+    Group,
+    /// Un directorio del filesystem. Cuadrado tenue.
+    Dir,
+    /// Un archivo hoja. Punto.
+    File,
+    /// Cualquier otra cosa. Punto tenue.
+    Other,
+}
+
+/// Un nodo del bosque que el navegador pinta. La jerarquía es explícita
+/// (`children`); el navegador la aplana según el estado de expansión.
+#[derive(Debug, Clone)]
+pub struct NavNode {
+    pub id: NavId,
+    pub label: String,
+    pub kind: NavKind,
+    pub children: Vec<NavNode>,
+}
+
+impl NavNode {
+    /// Un nodo hoja (sin hijos).
+    pub fn leaf(id: NavId, label: impl Into<String>, kind: NavKind) -> Self {
+        Self {
+            id,
+            label: label.into(),
+            kind,
+            children: Vec::new(),
+        }
+    }
+
+    /// Un nodo con hijos.
+    pub fn branch(
+        id: NavId,
+        label: impl Into<String>,
+        kind: NavKind,
+        children: Vec<NavNode>,
+    ) -> Self {
+        Self {
+            id,
+            label: label.into(),
+            kind,
+            children,
+        }
+    }
+
+    /// `true` si tiene al menos un hijo.
+    pub fn has_children(&self) -> bool {
+        !self.children.is_empty()
+    }
+}
+
+/// Modo de visualización del navegador.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum NavMode {
+    /// Árbol indentado con expand/collapse.
+    Tree,
+    /// Grafo de nodos con cables de contención.
+    Graph,
+}
+
+impl NavMode {
+    /// Etiquetas para un control segmentado (en el mismo orden que
+    /// [`NavMode::index`] / [`NavMode::from_index`]).
+    pub const LABELS: [&'static str; 2] = ["Árbol", "Grafo"];
+
+    /// El otro modo (para un botón de toggle simple).
+    pub fn toggled(self) -> Self {
+        match self {
+            NavMode::Tree => NavMode::Graph,
+            NavMode::Graph => NavMode::Tree,
+        }
+    }
+
+    /// Índice 0/1 — para alimentar un control segmentado.
+    pub fn index(self) -> usize {
+        match self {
+            NavMode::Tree => 0,
+            NavMode::Graph => 1,
+        }
+    }
+
+    /// Recupera el modo desde un índice de control segmentado (≥1 = grafo).
+    pub fn from_index(i: usize) -> Self {
+        if i == 0 {
+            NavMode::Tree
+        } else {
+            NavMode::Graph
+        }
+    }
+}
+
+/// Paleta del navegador: hereda las de tree y nodegraph del [`Theme`]
+/// semántico, más los tintes por [`NavKind`] para los iconos.
+#[derive(Debug, Clone, Copy)]
+pub struct NavPalette {
+    pub tree: TreePalette,
+    pub graph: NodegraphPalette,
+    pub accent: Color,
+    pub monad: Color,
+    pub group: Color,
+    pub dir: Color,
+    pub file: Color,
+    pub other: Color,
+}
+
+impl Default for NavPalette {
+    fn default() -> Self {
+        Self::from_theme(&Theme::dark())
+    }
+}
+
+impl NavPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            tree: TreePalette::from_theme(t),
+            graph: NodegraphPalette::from_theme(t),
+            accent: t.accent,
+            monad: t.accent,
+            group: t.fg_text,
+            dir: t.fg_muted,
+            file: t.fg_text,
+            other: t.fg_muted,
+        }
+    }
+
+    /// El color del icono de un nodo según su clase.
+    pub fn kind_color(&self, kind: NavKind) -> Color {
+        match kind {
+            NavKind::Monad => self.monad,
+            NavKind::Group => self.group,
+            NavKind::Dir => self.dir,
+            NavKind::File => self.file,
+            NavKind::Other => self.other,
+        }
+    }
+}
+
+/// Lo que el navegador necesita saber para pintar, sin los callbacks.
+pub struct NavSpec<'a> {
+    /// Las raíces del bosque a mostrar.
+    pub roots: &'a [NavNode],
+    /// Modo activo.
+    pub mode: NavMode,
+    /// Nodo seleccionado (resaltado en ambos modos). `None` = ninguno.
+    pub selected: Option<NavId>,
+    /// Paleta.
+    pub palette: NavPalette,
+    /// Dibujar líneas guía de indentación en el árbol.
+    pub guides: bool,
+}
+
+/// Alto de fila del árbol / paso vertical del grafo.
+const ROW_H: f32 = 24.0;
+/// Tamaño del icono de clase (px).
+const ICON_PX: f32 = 14.0;
+
+/// Compone el navegador. Los callbacks se identifican por [`NavId`]:
+/// - `is_expanded(id)` → si un nodo rama está abierto (sólo árbol);
+/// - `on_toggle(id)` → al click en el chevron (sólo árbol);
+/// - `on_select(id)` → al click en la fila (árbol) o al arrastrar el nodo
+///   (grafo);
+/// - `on_context(id)` → al right-click (ambos modos); `None` = sin menú.
+pub fn navigator_view<Msg, FExp, FTog, FSel, FCtx>(
+    spec: NavSpec,
+    is_expanded: FExp,
+    on_toggle: FTog,
+    on_select: FSel,
+    on_context: Option<FCtx>,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+    FExp: Fn(NavId) -> bool,
+    FTog: Fn(NavId) -> Msg,
+    FSel: Fn(NavId) -> Msg + Send + Sync + 'static,
+    FCtx: Fn(NavId) -> Msg,
+{
+    match spec.mode {
+        NavMode::Tree => tree_mode(spec, is_expanded, on_toggle, on_select, on_context),
+        NavMode::Graph => graph_mode(spec, is_expanded, on_select, on_context),
+    }
+}
+
+// =====================================================================
+// Árbol
+// =====================================================================
+
+fn tree_mode<Msg, FExp, FTog, FSel, FCtx>(
+    spec: NavSpec,
+    is_expanded: FExp,
+    on_toggle: FTog,
+    on_select: FSel,
+    on_context: Option<FCtx>,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+    FExp: Fn(NavId) -> bool,
+    FTog: Fn(NavId) -> Msg,
+    FSel: Fn(NavId) -> Msg,
+    FCtx: Fn(NavId) -> Msg,
+{
+    let mut rows: Vec<TreeRow<Msg>> = Vec::new();
+    for root in spec.roots {
+        push_rows(
+            root,
+            0,
+            &spec,
+            &is_expanded,
+            &on_toggle,
+            &on_select,
+            &on_context,
+            &mut rows,
+        );
+    }
+    tree_view(TreeSpec {
+        rows,
+        row_height: ROW_H,
+        indent_px: 14.0,
+        palette: spec.palette.tree,
+        guides: spec.guides,
+    })
+}
+
+#[allow(clippy::too_many_arguments)]
+fn push_rows<Msg, FExp, FTog, FSel, FCtx>(
+    node: &NavNode,
+    depth: usize,
+    spec: &NavSpec,
+    is_expanded: &FExp,
+    on_toggle: &FTog,
+    on_select: &FSel,
+    on_context: &Option<FCtx>,
+    out: &mut Vec<TreeRow<Msg>>,
+) where
+    Msg: Clone + Send + Sync + 'static,
+    FExp: Fn(NavId) -> bool,
+    FTog: Fn(NavId) -> Msg,
+    FSel: Fn(NavId) -> Msg,
+    FCtx: Fn(NavId) -> Msg,
+{
+    let has_children = node.has_children();
+    let expanded = has_children && is_expanded(node.id);
+    let icon = kind_icon_view::<Msg>(node.kind, spec.palette.kind_color(node.kind));
+    let mut row = TreeRow::new(
+        node.label.clone(),
+        depth,
+        has_children,
+        expanded,
+        spec.selected == Some(node.id),
+        on_toggle(node.id),
+        on_select(node.id),
+    )
+    .with_icon(icon);
+    if let Some(ctx) = on_context.as_ref().map(|f| f(node.id)) {
+        row = row.with_context(ctx);
+    }
+    out.push(row);
+
+    if expanded {
+        for child in &node.children {
+            push_rows(
+                child, depth + 1, spec, is_expanded, on_toggle, on_select, on_context, out,
+            );
+        }
+    }
+}
+
+// =====================================================================
+// Grafo
+// =====================================================================
+
+/// Un nodo visible aplanado para el grafo: su id, su label/kind y la posición
+/// (índice) de su padre en la lista (`None` = raíz).
+struct FlatNode {
+    id: NavId,
+    label: String,
+    kind: NavKind,
+    depth: usize,
+    parent: Option<usize>,
+    has_children: bool,
+}
+
+fn flatten_for_graph<FExp: Fn(NavId) -> bool>(
+    roots: &[NavNode],
+    is_expanded: &FExp,
+) -> Vec<FlatNode> {
+    let mut out = Vec::new();
+    for root in roots {
+        walk_graph(root, 0, None, is_expanded, &mut out);
+    }
+    out
+}
+
+fn walk_graph<FExp: Fn(NavId) -> bool>(
+    node: &NavNode,
+    depth: usize,
+    parent: Option<usize>,
+    is_expanded: &FExp,
+    out: &mut Vec<FlatNode>,
+) {
+    let has_children = node.has_children();
+    let me = out.len();
+    out.push(FlatNode {
+        id: node.id,
+        label: node.label.clone(),
+        kind: node.kind,
+        depth,
+        parent,
+        has_children,
+    });
+    if has_children && is_expanded(node.id) {
+        for child in &node.children {
+            walk_graph(child, depth + 1, Some(me), is_expanded, out);
+        }
+    }
+}
+
+fn graph_mode<Msg, FExp, FSel, FCtx>(
+    spec: NavSpec,
+    is_expanded: FExp,
+    on_select: FSel,
+    on_context: Option<FCtx>,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+    FExp: Fn(NavId) -> bool,
+    FSel: Fn(NavId) -> Msg + Send + Sync + 'static,
+    FCtx: Fn(NavId) -> Msg,
+{
+    let flat = flatten_for_graph(spec.roots, &is_expanded);
+    let metrics = NodegraphMetrics {
+        node_width: 150.0,
+        ..NodegraphMetrics::default()
+    };
+
+    // Layout: columna por profundidad, una fila por nodo visible.
+    const MARGIN: f32 = 24.0;
+    const COL_GAP: f32 = 36.0;
+    const ROW_GAP: f32 = 12.0;
+    let node_h = metrics.node_height(1, 1);
+    let col_w = metrics.node_width + COL_GAP;
+
+    let mut nodes: Vec<NodeSpec> = Vec::with_capacity(flat.len());
+    let mut wires: Vec<Wire> = Vec::new();
+    let ids: Vec<NavId> = flat.iter().map(|f| f.id).collect();
+
+    for (i, f) in flat.iter().enumerate() {
+        let inputs = if f.parent.is_some() {
+            vec![String::new()]
+        } else {
+            Vec::new()
+        };
+        let outputs = if f.has_children {
+            vec![String::new()]
+        } else {
+            Vec::new()
+        };
+        // Prefijo del icono en el label (el nodegraph no tiene slot de icono;
+        // un glifo simple por clase basta para distinguirlos de un vistazo).
+        let label = format!("{} {}", kind_glyph(f.kind), f.label);
+        nodes.push(NodeSpec {
+            id: i as NodeId,
+            label,
+            x: MARGIN + f.depth as f32 * col_w,
+            y: MARGIN + i as f32 * (node_h + ROW_GAP),
+            inputs,
+            outputs,
+        });
+        if let Some(p) = f.parent {
+            wires.push(Wire {
+                from_node: p as NodeId,
+                from_output: 0,
+                to_node: i as NodeId,
+                to_input: 0,
+            });
+        }
+    }
+
+    // Arrastrar un nodo lo selecciona (al soltar). El grafo no reposiciona
+    // por arrastre — el layout es derivado, no editable.
+    let drag_ids = ids.clone();
+    let on_drag = move |id: NodeId, phase: DragPhase, _dx: f32, _dy: f32| match phase {
+        DragPhase::End => drag_ids
+            .get(id as usize)
+            .map(|nav_id| on_select(*nav_id)),
+        DragPhase::Move => None,
+    };
+    // Sin conexiones: la contención es fija.
+    let on_connect = |_: NodeId, _: u16, _: NodeId, _: u16| None;
+
+    // Right-click → menú contextual (evaluado en build, por nodo).
+    let ctx_ids = &ids;
+    let on_right: Option<Box<dyn Fn(NodeId) -> Option<Msg>>> = on_context.map(|f| {
+        let f = move |id: NodeId| ctx_ids.get(id as usize).map(|nav_id| f(*nav_id));
+        Box::new(f) as Box<dyn Fn(NodeId) -> Option<Msg>>
+    });
+
+    // Resaltado del nodo seleccionado.
+    let sel_idx = spec
+        .selected
+        .and_then(|sid| ids.iter().position(|id| *id == sid));
+    let accent = spec.palette.accent;
+    let tint = move |id: NodeId| -> Option<NodeTint> {
+        if Some(id as usize) == sel_idx {
+            Some(NodeTint {
+                bg_title: Some(accent),
+                ..NodeTint::default()
+            })
+        } else {
+            None
+        }
+    };
+
+    nodegraph_view_styled(
+        &nodes,
+        &wires,
+        &spec.palette.graph,
+        &metrics,
+        on_drag,
+        on_connect,
+        on_right,
+        Some(&tint as &dyn Fn(NodeId) -> Option<NodeTint>),
+        None,
+    )
+}
+
+/// Glifo ASCII-ish por clase para el label del grafo.
+fn kind_glyph(kind: NavKind) -> &'static str {
+    match kind {
+        NavKind::Monad => "◈",
+        NavKind::Group => "▣",
+        NavKind::Dir => "▸",
+        NavKind::File => "·",
+        NavKind::Other => "·",
+    }
+}
+
+// =====================================================================
+// Icono vectorial por clase (para el árbol)
+// =====================================================================
+
+/// Un mini-canvas con el icono de la clase, tinte `color`. Diamante para
+/// Mónada, cuadrado para grupo/dir, círculo para archivo.
+fn kind_icon_view<Msg: Clone + 'static>(kind: NavKind, color: Color) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: llimphi_ui::llimphi_layout::taffy::prelude::length(ICON_PX),
+            height: llimphi_ui::llimphi_layout::taffy::prelude::length(ICON_PX),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        ..Default::default()
+    })
+    .paint_with(move |scene, _ts, rect| {
+        use llimphi_ui::llimphi_raster::kurbo::{Affine, BezPath, Circle, Point, RoundedRect};
+        use llimphi_ui::llimphi_raster::peniko::Fill;
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+        let cx = (rect.x + rect.w * 0.5) as f64;
+        let cy = (rect.y + rect.h * 0.5) as f64;
+        let r = (rect.w.min(rect.h) as f64 * 0.34).max(1.5);
+        match kind {
+            NavKind::Monad => {
+                // Diamante (cuadrado a 45°).
+                let mut p = BezPath::new();
+                p.move_to(Point::new(cx, cy - r));
+                p.line_to(Point::new(cx + r, cy));
+                p.line_to(Point::new(cx, cy + r));
+                p.line_to(Point::new(cx - r, cy));
+                p.close_path();
+                scene.fill(Fill::NonZero, Affine::IDENTITY, color, None, &p);
+            }
+            NavKind::Group | NavKind::Dir => {
+                let sq = RoundedRect::new(cx - r, cy - r, cx + r, cy + r, 2.0);
+                scene.fill(Fill::NonZero, Affine::IDENTITY, color, None, &sq);
+            }
+            NavKind::File | NavKind::Other => {
+                let dot = (rect.w.min(rect.h) as f64 * 0.22).max(1.0);
+                scene.fill(
+                    Fill::NonZero,
+                    Affine::IDENTITY,
+                    color,
+                    None,
+                    &Circle::new((cx, cy), dot),
+                );
+            }
+        }
+    })
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[derive(Clone, Debug, PartialEq)]
+    enum Msg {
+        Toggle(NavId),
+        Select(NavId),
+        Open(NavId),
+    }
+
+    fn forest() -> Vec<NavNode> {
+        vec![NavNode::branch(
+            1,
+            "Mónada src",
+            NavKind::Monad,
+            vec![
+                NavNode::leaf(11, "lib.rs", NavKind::File),
+                NavNode::leaf(12, "main.rs", NavKind::File),
+            ],
+        )]
+    }
+
+    #[test]
+    fn navmode_toggle_e_indices() {
+        assert_eq!(NavMode::Tree.toggled(), NavMode::Graph);
+        assert_eq!(NavMode::Graph.toggled(), NavMode::Tree);
+        assert_eq!(NavMode::Tree.index(), 0);
+        assert_eq!(NavMode::from_index(1), NavMode::Graph);
+        assert_eq!(NavMode::from_index(0), NavMode::Tree);
+    }
+
+    #[test]
+    fn navnode_constructores() {
+        let n = NavNode::leaf(1, "x", NavKind::File);
+        assert!(!n.has_children());
+        let b = NavNode::branch(2, "y", NavKind::Monad, vec![n]);
+        assert!(b.has_children());
+        assert_eq!(b.children.len(), 1);
+    }
+
+    #[test]
+    fn flatten_grafo_respeta_expansion() {
+        let roots = forest();
+        // Colapsado: sólo la raíz.
+        let collapsed = flatten_for_graph(&roots, &|_| false);
+        assert_eq!(collapsed.len(), 1);
+        assert_eq!(collapsed[0].id, 1);
+        assert!(collapsed[0].parent.is_none());
+        assert!(collapsed[0].has_children);
+        // Expandido: raíz + 2 hijos, con parent = índice 0.
+        let expanded = flatten_for_graph(&roots, &|id| id == 1);
+        assert_eq!(expanded.len(), 3);
+        assert_eq!(expanded[1].parent, Some(0));
+        assert_eq!(expanded[2].parent, Some(0));
+        assert_eq!(expanded[1].depth, 1);
+    }
+
+    #[test]
+    fn navigator_view_construye_en_ambos_modos() {
+        // No paniquea construyendo el View en cada modo (smoke).
+        let roots = forest();
+        let palette = NavPalette::default();
+        for mode in [NavMode::Tree, NavMode::Graph] {
+            let _v: View<Msg> = navigator_view(
+                NavSpec {
+                    roots: &roots,
+                    mode,
+                    selected: Some(1),
+                    palette,
+                    guides: true,
+                },
+                |id| id == 1,
+                Msg::Toggle,
+                Msg::Select,
+                Some(Msg::Open),
+            );
+        }
+    }
+}
diff --git a/widgets/nodegraph/Cargo.toml b/widgets/nodegraph/Cargo.toml
new file mode 100644
index 0000000..edc5d0e
--- /dev/null
+++ b/widgets/nodegraph/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "llimphi-widget-nodegraph"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-nodegraph — lienzo de nodos con pins y cables Bezier. Reusable por pluma (DAG), nakui (fórmulas yupay), tullpu (ajustes no destructivos), dominium (sistemas), takiy (cadena de audio)."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+
+[[example]]
+name = "nodegraph_demo"
+path = "examples/nodegraph_demo.rs"
diff --git a/widgets/nodegraph/LEEME.md b/widgets/nodegraph/LEEME.md
new file mode 100644
index 0000000..d65279c
--- /dev/null
+++ b/widgets/nodegraph/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-nodegraph
+
+> Lienzo de nodos + cables Bezier para [llimphi](../../README.md).
+
+Cada nodo es `View<Msg>` libre con puertos in/out. Aristas curvas Bezier. Drag de nodos, pan/zoom del canvas, conectar puertos. Usado por `pluma-notebook-graph-llimphi`, `nakui-explorer-llimphi`, `iniy-explorer-llimphi`.
diff --git a/widgets/nodegraph/README.md b/widgets/nodegraph/README.md
new file mode 100644
index 0000000..f374697
--- /dev/null
+++ b/widgets/nodegraph/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-nodegraph
+
+> Node canvas + Bezier wires for [llimphi](../../README.md).
+
+Each node is a free `View<Msg>` with in/out ports. Bezier curve edges. Node drag, canvas pan/zoom, port connect. Used by `pluma-notebook-graph-llimphi`, `nakui-explorer-llimphi`, `iniy-explorer-llimphi`.
diff --git a/widgets/nodegraph/examples/nodegraph_demo.rs b/widgets/nodegraph/examples/nodegraph_demo.rs
new file mode 100644
index 0000000..a78117a
--- /dev/null
+++ b/widgets/nodegraph/examples/nodegraph_demo.rs
@@ -0,0 +1,197 @@
+//! Showcase de `llimphi-widget-nodegraph`. Cuatro nodos pre-conectados
+//! representando una cadena de audio (`Source → Filter → Mixer →
+//! Output`) y un `LFO` huérfano para que el usuario lo conecte
+//! arrastrando desde su pin de salida hasta el `mod` del filtro.
+//!
+//! - Arrastrá la title bar de cualquier nodo para moverlo.
+//! - Arrastrá desde un pin de salida (lado derecho) y soltá sobre un
+//!   pin de entrada (lado izquierdo) de otro nodo para conectar.
+//!
+//! Corré con: `cargo run -p llimphi-widget-nodegraph --example
+//! nodegraph_demo --release`.
+
+use llimphi_theme::Theme;
+use llimphi_ui::{App, DragPhase, Handle, View};
+use llimphi_widget_nodegraph::{
+    nodegraph_view, NodeId, NodeSpec, NodegraphMetrics, NodegraphPalette, PinIdx, Wire,
+};
+
+#[derive(Clone)]
+enum Msg {
+    DragNode {
+        id: NodeId,
+        // El demo no diferencia Move/End; lo dejamos en el Msg por si
+        // un caller real quiere persistir layout solo en End.
+        #[allow(dead_code)]
+        phase: DragPhase,
+        dx: f32,
+        dy: f32,
+    },
+    Connect {
+        from_node: NodeId,
+        from_pin: PinIdx,
+        to_node: NodeId,
+        to_pin: PinIdx,
+    },
+}
+
+struct Model {
+    nodes: Vec<NodeSpec>,
+    wires: Vec<Wire>,
+}
+
+const ID_SOURCE: NodeId = 1;
+const ID_FILTER: NodeId = 2;
+const ID_MIXER: NodeId = 3;
+const ID_OUTPUT: NodeId = 4;
+const ID_LFO: NodeId = 5;
+
+struct Showcase;
+
+impl App for Showcase {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · nodegraph showcase (drag títulos, arrastrá pin → pin)"
+    }
+
+    fn initial_size() -> (u32, u32) {
+        (1100, 720)
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        Model {
+            nodes: vec![
+                NodeSpec {
+                    id: ID_SOURCE,
+                    label: "Source".into(),
+                    x: 60.0,
+                    y: 80.0,
+                    inputs: vec![],
+                    outputs: vec!["out".into()],
+                },
+                NodeSpec {
+                    id: ID_FILTER,
+                    label: "Filter".into(),
+                    x: 290.0,
+                    y: 80.0,
+                    inputs: vec!["in".into(), "mod".into()],
+                    outputs: vec!["out".into()],
+                },
+                NodeSpec {
+                    id: ID_MIXER,
+                    label: "Mixer".into(),
+                    x: 520.0,
+                    y: 80.0,
+                    inputs: vec!["a".into(), "b".into()],
+                    outputs: vec!["out".into()],
+                },
+                NodeSpec {
+                    id: ID_OUTPUT,
+                    label: "Output".into(),
+                    x: 750.0,
+                    y: 80.0,
+                    inputs: vec!["in".into()],
+                    outputs: vec![],
+                },
+                NodeSpec {
+                    id: ID_LFO,
+                    label: "LFO".into(),
+                    x: 290.0,
+                    y: 260.0,
+                    inputs: vec![],
+                    outputs: vec!["out".into()],
+                },
+            ],
+            wires: vec![
+                Wire {
+                    from_node: ID_SOURCE,
+                    from_output: 0,
+                    to_node: ID_FILTER,
+                    to_input: 0,
+                },
+                Wire {
+                    from_node: ID_FILTER,
+                    from_output: 0,
+                    to_node: ID_MIXER,
+                    to_input: 0,
+                },
+                Wire {
+                    from_node: ID_MIXER,
+                    from_output: 0,
+                    to_node: ID_OUTPUT,
+                    to_input: 0,
+                },
+            ],
+        }
+    }
+
+    fn update(model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
+        let mut m = model;
+        match msg {
+            Msg::DragNode { id, phase: _, dx, dy } => {
+                if let Some(n) = m.nodes.iter_mut().find(|n| n.id == id) {
+                    n.x += dx;
+                    n.y += dy;
+                    if n.x < 0.0 {
+                        n.x = 0.0;
+                    }
+                    if n.y < 0.0 {
+                        n.y = 0.0;
+                    }
+                }
+            }
+            Msg::Connect {
+                from_node,
+                from_pin,
+                to_node,
+                to_pin,
+            } => {
+                if from_node == to_node {
+                    return m;
+                }
+                let exists = m.wires.iter().any(|w| {
+                    w.from_node == from_node
+                        && w.from_output == from_pin
+                        && w.to_node == to_node
+                        && w.to_input == to_pin
+                });
+                if !exists {
+                    m.wires.push(Wire {
+                        from_node,
+                        from_output: from_pin,
+                        to_node,
+                        to_input: to_pin,
+                    });
+                }
+            }
+        }
+        m
+    }
+
+    fn view(model: &Model) -> View<Msg> {
+        let theme = Theme::dark();
+        let palette = NodegraphPalette::from_theme(&theme);
+        let metrics = NodegraphMetrics::default();
+        nodegraph_view(
+            &model.nodes,
+            &model.wires,
+            &palette,
+            &metrics,
+            |id, phase, dx, dy| Some(Msg::DragNode { id, phase, dx, dy }),
+            |from_node, from_pin, to_node, to_pin| {
+                Some(Msg::Connect {
+                    from_node,
+                    from_pin,
+                    to_node,
+                    to_pin,
+                })
+            },
+        )
+    }
+}
+
+fn main() {
+    llimphi_ui::run::<Showcase>();
+}
diff --git a/widgets/nodegraph/src/lib.rs b/widgets/nodegraph/src/lib.rs
new file mode 100644
index 0000000..7af7238
--- /dev/null
+++ b/widgets/nodegraph/src/lib.rs
@@ -0,0 +1,718 @@
+//! `llimphi-widget-nodegraph` — lienzo de nodos con pins y cables
+//! Bezier sobre Llimphi.
+//!
+//! Modelo declarativo de un grafo dirigido: cada frame, el caller pasa
+//! la lista actual de [`NodeSpec`]s + [`Wire`]s y el widget pinta:
+//!
+//! - el lienzo (fondo lleno);
+//! - cada nodo como un rect con título arriba y pins a los lados
+//!   (entradas a la izquierda, salidas a la derecha);
+//! - los cables entre `(node_a, output_pin_a)` y `(node_b, input_pin_b)`
+//!   como Bezier cúbicas con tangentes horizontales (mismo look que
+//!   `pluma-editor-llimphi::multilienzo_editor::carril_editor`).
+//!
+//! El widget no mantiene estado: el caller acumula posición de nodos +
+//! cables en su `Model` y le pasa handlers para los dos eventos
+//! interactivos:
+//!
+//! - **mover un nodo** — `on_drag_node(node_id, phase, dx, dy)` se
+//!   invoca al arrastrar la title bar de un nodo. El handler suma el
+//!   delta a la posición persistida.
+//! - **conectar dos pins** — al arrastrar desde un pin de salida y
+//!   soltar sobre un pin de entrada, `on_connect(from_node, from_out,
+//!   to_node, to_in)` se invoca para que el caller materialice el
+//!   `Wire` en su modelo.
+//!
+//! Reusable por: pluma (visualizador DAG), nakui (fórmulas yupay),
+//! tullpu (ajustes no destructivos), dominium (sistemas), takiy
+//! (cadena de audio), pluma-notebook (kernel-DAG visual).
+
+#![forbid(unsafe_code)]
+
+use std::sync::Arc;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Dimension, Position, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::kurbo::{Affine, BezPath, Stroke};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{DragPhase, View};
+
+/// Identificador opaco de un nodo. El caller asigna estos valores; el
+/// widget los pasa de vuelta sin interpretarlos.
+pub type NodeId = u32;
+/// Índice del pin dentro de la lista `inputs` o `outputs` del nodo.
+pub type PinIdx = u16;
+
+/// Especificación de un nodo del grafo. El caller construye uno por
+/// nodo en cada `view`. Las posiciones son en pixels relativas al rect
+/// del lienzo.
+#[derive(Debug, Clone)]
+pub struct NodeSpec {
+    pub id: NodeId,
+    pub label: String,
+    /// Esquina superior-izquierda del nodo, en coordenadas del lienzo.
+    pub x: f32,
+    pub y: f32,
+    /// Labels de los pins de entrada. Cantidad = altura mínima del nodo.
+    pub inputs: Vec<String>,
+    /// Labels de los pins de salida.
+    pub outputs: Vec<String>,
+}
+
+/// Cable entre el pin de salida de un nodo y el pin de entrada de otro.
+/// El widget no valida ciclos ni direcciones — esa política vive en el
+/// caller.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct Wire {
+    pub from_node: NodeId,
+    pub from_output: PinIdx,
+    pub to_node: NodeId,
+    pub to_input: PinIdx,
+}
+
+/// Tinte opcional de un nodo resaltado. Cada campo `Some` sobrescribe
+/// el color correspondiente de la paleta global para *ese* nodo; los
+/// `None` heredan la paleta. Sirve para que el caller marque un subgrafo
+/// (p.ej. el cono afectado por un morfismo) sin tocar el resto.
+#[derive(Debug, Clone, Copy, Default)]
+pub struct NodeTint {
+    pub bg_node: Option<Color>,
+    pub bg_title: Option<Color>,
+    pub fg_title: Option<Color>,
+}
+
+/// Paleta del lienzo. Hereda del [`llimphi_theme::Theme`] semántico.
+#[derive(Debug, Clone, Copy)]
+pub struct NodegraphPalette {
+    pub bg_canvas: Color,
+    pub bg_node: Color,
+    pub bg_title: Color,
+    pub fg_title: Color,
+    pub fg_pin_label: Color,
+    pub pin_input: Color,
+    pub pin_output: Color,
+    pub pin_drop_hover: Color,
+    pub wire: Color,
+    pub border: Color,
+}
+
+impl Default for NodegraphPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl NodegraphPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_canvas: t.bg_app,
+            bg_node: t.bg_panel,
+            bg_title: t.bg_panel_alt,
+            fg_title: t.fg_text,
+            fg_pin_label: t.fg_muted,
+            pin_input: t.accent,
+            pin_output: t.accent,
+            pin_drop_hover: t.bg_selected,
+            wire: t.accent,
+            border: t.border,
+        }
+    }
+}
+
+/// Geometría del nodo y de los pins.
+#[derive(Debug, Clone, Copy)]
+pub struct NodegraphMetrics {
+    pub node_width: f32,
+    pub title_height: f32,
+    pub pin_row_height: f32,
+    pub pin_radius: f32,
+    pub pin_label_size: f32,
+    pub title_text_size: f32,
+    pub wire_stroke: f32,
+    pub node_radius: f64,
+}
+
+impl Default for NodegraphMetrics {
+    fn default() -> Self {
+        Self {
+            node_width: 160.0,
+            title_height: 22.0,
+            pin_row_height: 18.0,
+            pin_radius: 5.0,
+            pin_label_size: 10.0,
+            title_text_size: 11.0,
+            wire_stroke: 1.6,
+            node_radius: 4.0,
+        }
+    }
+}
+
+impl NodegraphMetrics {
+    /// Alto total del rect que ocupa un nodo con `n_in` entradas y
+    /// `n_out` salidas. El cuerpo crece con el lado que tenga más pins.
+    pub fn node_height(&self, n_in: usize, n_out: usize) -> f32 {
+        let rows = n_in.max(n_out).max(1) as f32;
+        self.title_height + rows * self.pin_row_height + 6.0
+    }
+
+    /// Centro Y absoluto de un pin de entrada del nodo cuyo top-left es
+    /// `(_x, node_y)`. Sirve también para outputs (misma alineación).
+    pub fn input_pin_y(&self, node_y: f32, pin: PinIdx) -> f32 {
+        node_y
+            + self.title_height
+            + 3.0
+            + (pin as f32 + 0.5) * self.pin_row_height
+    }
+
+    pub fn output_pin_y(&self, node_y: f32, pin: PinIdx) -> f32 {
+        self.input_pin_y(node_y, pin)
+    }
+}
+
+type DragNodeFn<Msg> =
+    Arc<dyn Fn(NodeId, DragPhase, f32, f32) -> Option<Msg> + Send + Sync>;
+type ConnectFn<Msg> = Arc<
+    dyn Fn(NodeId, PinIdx, NodeId, PinIdx) -> Option<Msg> + Send + Sync,
+>;
+
+/// Codifica `(node_id, pin_idx)` en el `u64` que viaja como payload del
+/// drag de un pin. 32 bits superiores = node_id, 16 bits inferiores =
+/// pin_idx.
+#[inline]
+fn encode_payload(node: NodeId, pin: PinIdx) -> u64 {
+    ((node as u64) << 32) | (pin as u64)
+}
+
+#[inline]
+fn decode_payload(payload: u64) -> (NodeId, PinIdx) {
+    let node = (payload >> 32) as NodeId;
+    let pin = (payload & 0xFFFF) as PinIdx;
+    (node, pin)
+}
+
+/// Construye el lienzo de nodos. `on_drag_node` se invoca con el delta
+/// del cursor cuando el usuario arrastra la title bar de un nodo (las
+/// fases `Move` y `End` se reenvían tal cual). `on_connect` se invoca
+/// cuando el usuario suelta un cable iniciado en un pin de salida
+/// sobre un pin de entrada de otro nodo.
+pub fn nodegraph_view<Msg, FDrag, FConnect>(
+    nodes: &[NodeSpec],
+    wires: &[Wire],
+    palette: &NodegraphPalette,
+    metrics: &NodegraphMetrics,
+    on_drag_node: FDrag,
+    on_connect: FConnect,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+    FDrag: Fn(NodeId, DragPhase, f32, f32) -> Option<Msg> + Send + Sync + 'static,
+    FConnect:
+        Fn(NodeId, PinIdx, NodeId, PinIdx) -> Option<Msg> + Send + Sync + 'static,
+{
+    nodegraph_view_ex::<Msg, FDrag, FConnect, fn(NodeId) -> Option<Msg>>(
+        nodes,
+        wires,
+        palette,
+        metrics,
+        on_drag_node,
+        on_connect,
+        None,
+    )
+}
+
+/// Variante extendida con un handler opcional de click derecho sobre
+/// la title bar de cada nodo. Permite a la app montar acciones por-nodo
+/// (estilo "ejecutar desde aquí" en un notebook reactivo, o "duplicar
+/// este nodo" en un editor de cadena de audio) sin esperar a que el
+/// widget tenga un menú contextual propio.
+///
+/// `on_right_click_node` se evalúa una vez por nodo al construir la
+/// vista — si devuelve `Some(msg)`, el runtime emite ese `Msg` al hacer
+/// right-click sobre la title bar; `None` deja al nodo sin acción
+/// contextual.
+pub fn nodegraph_view_ex<Msg, FDrag, FConnect, FRight>(
+    nodes: &[NodeSpec],
+    wires: &[Wire],
+    palette: &NodegraphPalette,
+    metrics: &NodegraphMetrics,
+    on_drag_node: FDrag,
+    on_connect: FConnect,
+    on_right_click_node: Option<FRight>,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+    FDrag: Fn(NodeId, DragPhase, f32, f32) -> Option<Msg> + Send + Sync + 'static,
+    FConnect:
+        Fn(NodeId, PinIdx, NodeId, PinIdx) -> Option<Msg> + Send + Sync + 'static,
+    FRight: Fn(NodeId) -> Option<Msg>,
+{
+    nodegraph_view_styled(
+        nodes,
+        wires,
+        palette,
+        metrics,
+        on_drag_node,
+        on_connect,
+        on_right_click_node,
+        None,
+        None,
+    )
+}
+
+/// Variante con realce: además de los handlers, acepta dos closures de
+/// estilo evaluados en construcción —`node_tint(id)` tiñe nodos puntuales
+/// y `wire_tint(&Wire)` recolorea cables— para que el caller marque un
+/// subgrafo (cono afectado, ruta crítica, celda con error…) sin tocar la
+/// paleta global. Ambos `None` = render idéntico a [`nodegraph_view`].
+#[allow(clippy::too_many_arguments)]
+pub fn nodegraph_view_styled<Msg, FDrag, FConnect, FRight>(
+    nodes: &[NodeSpec],
+    wires: &[Wire],
+    palette: &NodegraphPalette,
+    metrics: &NodegraphMetrics,
+    on_drag_node: FDrag,
+    on_connect: FConnect,
+    on_right_click_node: Option<FRight>,
+    node_tint: Option<&dyn Fn(NodeId) -> Option<NodeTint>>,
+    wire_tint: Option<&dyn Fn(&Wire) -> Option<Color>>,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+    FDrag: Fn(NodeId, DragPhase, f32, f32) -> Option<Msg> + Send + Sync + 'static,
+    FConnect:
+        Fn(NodeId, PinIdx, NodeId, PinIdx) -> Option<Msg> + Send + Sync + 'static,
+    FRight: Fn(NodeId) -> Option<Msg>,
+{
+    let on_drag: DragNodeFn<Msg> = Arc::new(on_drag_node);
+    let on_connect: ConnectFn<Msg> = Arc::new(on_connect);
+
+    let painted = precompute_wires(nodes, wires, metrics, palette.wire, wire_tint);
+    let stroke_px = metrics.wire_stroke;
+
+    let mut children: Vec<View<Msg>> = Vec::with_capacity(nodes.len() + 1);
+
+    // Capa 0 — cables (van detrás de los nodos).
+    children.push(wires_layer(painted, stroke_px));
+
+    // Capa 1..N — nodos.
+    for node in nodes {
+        let right_click_msg = on_right_click_node
+            .as_ref()
+            .and_then(|f| f(node.id));
+        let tint = node_tint.and_then(|f| f(node.id));
+        children.push(node_view(
+            node,
+            palette,
+            metrics,
+            &on_drag,
+            &on_connect,
+            right_click_msg,
+            tint,
+        ));
+    }
+
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.bg_canvas)
+    .clip(true)
+    .children(children)
+}
+
+#[derive(Debug, Clone, Copy)]
+struct WirePainted {
+    x1: f32,
+    y1: f32,
+    x2: f32,
+    y2: f32,
+    color: Color,
+}
+
+fn precompute_wires(
+    nodes: &[NodeSpec],
+    wires: &[Wire],
+    metrics: &NodegraphMetrics,
+    default_color: Color,
+    wire_tint: Option<&dyn Fn(&Wire) -> Option<Color>>,
+) -> Vec<WirePainted> {
+    let mut out = Vec::with_capacity(wires.len());
+    for w in wires {
+        let from = nodes.iter().find(|n| n.id == w.from_node);
+        let to = nodes.iter().find(|n| n.id == w.to_node);
+        if let (Some(a), Some(b)) = (from, to) {
+            let x1 = a.x + metrics.node_width;
+            let y1 = metrics.output_pin_y(a.y, w.from_output);
+            let x2 = b.x;
+            let y2 = metrics.input_pin_y(b.y, w.to_input);
+            let color = wire_tint.and_then(|f| f(w)).unwrap_or(default_color);
+            out.push(WirePainted {
+                x1,
+                y1,
+                x2,
+                y2,
+                color,
+            });
+        }
+    }
+    out
+}
+
+fn wires_layer<Msg>(wires: Vec<WirePainted>, stroke_px: f32) -> View<Msg>
+where
+    Msg: Clone + 'static,
+{
+    let nodo = View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(0.0_f32),
+            top: length(0.0_f32),
+            right: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    });
+    if wires.is_empty() {
+        return nodo;
+    }
+    nodo.paint_with(move |scene, _ts, rect| {
+        let stroke = Stroke::new(stroke_px as f64);
+        for w in &wires {
+            // Bezier cúbica con tangentes horizontales — mismo patrón
+            // que las hebras de pluma-editor-llimphi.
+            let dx = ((w.x2 - w.x1).abs().max(40.0) * 0.5) as f64;
+            let x1 = (rect.x + w.x1) as f64;
+            let y1 = (rect.y + w.y1) as f64;
+            let x2 = (rect.x + w.x2) as f64;
+            let y2 = (rect.y + w.y2) as f64;
+            let mut path = BezPath::new();
+            path.move_to((x1, y1));
+            path.curve_to((x1 + dx, y1), (x2 - dx, y2), (x2, y2));
+            scene.stroke(&stroke, Affine::IDENTITY, w.color, None, &path);
+        }
+    })
+}
+
+fn node_view<Msg>(
+    node: &NodeSpec,
+    palette: &NodegraphPalette,
+    metrics: &NodegraphMetrics,
+    on_drag: &DragNodeFn<Msg>,
+    on_connect: &ConnectFn<Msg>,
+    on_right_click_msg: Option<Msg>,
+    tint: Option<NodeTint>,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+{
+    let n_in = node.inputs.len();
+    let n_out = node.outputs.len();
+    let height = metrics.node_height(n_in, n_out);
+
+    // Colores efectivos: el tinte sobrescribe la paleta por-campo.
+    let tint = tint.unwrap_or_default();
+    let bg_node = tint.bg_node.unwrap_or(palette.bg_node);
+    let bg_title = tint.bg_title.unwrap_or(palette.bg_title);
+    let fg_title = tint.fg_title.unwrap_or(palette.fg_title);
+
+    let node_id = node.id;
+    let drag = on_drag.clone();
+    let mut title_bar = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(metrics.title_height),
+        },
+        flex_shrink: 0.0,
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(bg_title)
+    .text_aligned(
+        node.label.clone(),
+        metrics.title_text_size,
+        fg_title,
+        Alignment::Start,
+    )
+    .draggable(move |phase, dx, dy| (drag)(node_id, phase, dx, dy));
+
+    if let Some(msg) = on_right_click_msg {
+        title_bar = title_bar.on_right_click(msg);
+    }
+
+    let mut pin_layer_children: Vec<View<Msg>> = Vec::with_capacity(n_in + n_out);
+    for (i, label) in node.inputs.iter().enumerate() {
+        pin_layer_children.push(pin_view(
+            node_id,
+            i as PinIdx,
+            PinKind::Input,
+            label,
+            palette,
+            metrics,
+            on_connect.clone(),
+        ));
+    }
+    for (i, label) in node.outputs.iter().enumerate() {
+        pin_layer_children.push(pin_view(
+            node_id,
+            i as PinIdx,
+            PinKind::Output,
+            label,
+            palette,
+            metrics,
+            on_connect.clone(),
+        ));
+    }
+    let pin_layer = View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(0.0_f32),
+            top: length(metrics.title_height),
+            right: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        size: Size {
+            width: percent(1.0_f32),
+            height: Dimension::auto(),
+        },
+        ..Default::default()
+    })
+    .children(pin_layer_children);
+
+    View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(node.x),
+            top: length(node.y),
+            right: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        size: Size {
+            width: length(metrics.node_width),
+            height: length(height),
+        },
+        ..Default::default()
+    })
+    .fill(bg_node)
+    .radius(metrics.node_radius)
+    .children(vec![title_bar, pin_layer])
+}
+
+#[derive(Debug, Clone, Copy)]
+enum PinKind {
+    Input,
+    Output,
+}
+
+fn pin_view<Msg>(
+    node_id: NodeId,
+    pin_idx: PinIdx,
+    kind: PinKind,
+    label: &str,
+    palette: &NodegraphPalette,
+    metrics: &NodegraphMetrics,
+    on_connect: ConnectFn<Msg>,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+{
+    let y_top = pin_idx as f32 * metrics.pin_row_height;
+    let row_h = metrics.pin_row_height;
+    let r = metrics.pin_radius;
+    let diam = r * 2.0;
+
+    let (pin_left, pin_right, dot_color, label_align) = match kind {
+        PinKind::Input => (
+            Some(length(-r)),
+            None,
+            palette.pin_input,
+            Alignment::Start,
+        ),
+        PinKind::Output => (
+            None,
+            Some(length(-r)),
+            palette.pin_output,
+            Alignment::End,
+        ),
+    };
+
+    let mut dot = View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: pin_left.unwrap_or_else(|| length(0.0_f32)),
+            top: length((row_h - diam) * 0.5),
+            right: pin_right.unwrap_or_else(|| length(0.0_f32)),
+            bottom: length(0.0_f32),
+        },
+        size: Size {
+            width: length(diam),
+            height: length(diam),
+        },
+        ..Default::default()
+    })
+    .fill(dot_color)
+    .radius(r as f64);
+
+    match kind {
+        PinKind::Output => {
+            dot = dot
+                .draggable(|_phase: DragPhase, _dx: f32, _dy: f32| None)
+                .drag_payload(encode_payload(node_id, pin_idx));
+        }
+        PinKind::Input => {
+            let to_node = node_id;
+            let to_pin = pin_idx;
+            let cb = on_connect.clone();
+            dot = dot
+                .on_drop(move |payload: u64| {
+                    let (from_node, from_pin) = decode_payload(payload);
+                    (cb)(from_node, from_pin, to_node, to_pin)
+                })
+                .drop_hover_fill(palette.pin_drop_hover);
+        }
+    }
+
+    let label_view = View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(diam + 4.0),
+            top: length(0.0),
+            right: length(diam + 4.0),
+            bottom: length(0.0),
+        },
+        size: Size {
+            width: Dimension::auto(),
+            height: length(row_h),
+        },
+        ..Default::default()
+    })
+    .text_aligned(
+        label.to_string(),
+        metrics.pin_label_size,
+        palette.fg_pin_label,
+        label_align,
+    );
+
+    View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(0.0),
+            top: length(y_top),
+            right: length(0.0),
+            bottom: length(0.0_f32),
+        },
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(row_h),
+        },
+        ..Default::default()
+    })
+    .children(vec![label_view, dot])
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn payload_roundtrip() {
+        for (n, p) in [
+            (0u32, 0u16),
+            (1, 0),
+            (0, 1),
+            (42, 7),
+            (u32::MAX, u16::MAX),
+            (123_456, 65_535),
+        ] {
+            let enc = encode_payload(n, p);
+            let (n2, p2) = decode_payload(enc);
+            assert_eq!((n, p), (n2, p2), "payload {enc} → ({n2}, {p2})");
+        }
+    }
+
+    #[test]
+    fn metrics_node_height_grows_with_max_side() {
+        let m = NodegraphMetrics::default();
+        assert_eq!(m.node_height(3, 1), m.node_height(1, 3));
+        let min = m.title_height + m.pin_row_height + 6.0;
+        assert_eq!(m.node_height(0, 0), min);
+    }
+
+    #[test]
+    fn pin_y_progression() {
+        let m = NodegraphMetrics::default();
+        let y0 = m.input_pin_y(100.0, 0);
+        let y1 = m.input_pin_y(100.0, 1);
+        let y2 = m.input_pin_y(100.0, 2);
+        assert!(y1 - y0 > 0.0, "pins crecen hacia abajo");
+        assert!((y2 - y1) - (y1 - y0) < 1e-3, "espaciado uniforme");
+    }
+
+    #[test]
+    fn precompute_skips_dangling_wires() {
+        let nodes = vec![NodeSpec {
+            id: 1,
+            label: "solo".into(),
+            x: 0.0,
+            y: 0.0,
+            inputs: vec!["in".into()],
+            outputs: vec!["out".into()],
+        }];
+        let wires = vec![Wire {
+            from_node: 99,
+            from_output: 0,
+            to_node: 1,
+            to_input: 0,
+        }];
+        let m = NodegraphMetrics::default();
+        let pre = precompute_wires(&nodes, &wires, &m, Color::from_rgba8(0,0,0,255), None);
+        assert!(pre.is_empty());
+    }
+
+    #[test]
+    fn precompute_resolves_existing_wires() {
+        let nodes = vec![
+            NodeSpec {
+                id: 1,
+                label: "a".into(),
+                x: 0.0,
+                y: 0.0,
+                inputs: vec![],
+                outputs: vec!["out".into()],
+            },
+            NodeSpec {
+                id: 2,
+                label: "b".into(),
+                x: 200.0,
+                y: 50.0,
+                inputs: vec!["in".into()],
+                outputs: vec![],
+            },
+        ];
+        let wires = vec![Wire {
+            from_node: 1,
+            from_output: 0,
+            to_node: 2,
+            to_input: 0,
+        }];
+        let m = NodegraphMetrics::default();
+        let pre = precompute_wires(&nodes, &wires, &m, Color::from_rgba8(0,0,0,255), None);
+        assert_eq!(pre.len(), 1);
+        assert!((pre[0].x1 - m.node_width).abs() < 1e-3);
+        assert!((pre[0].x2 - 200.0).abs() < 1e-3);
+    }
+}
diff --git a/widgets/panel/Cargo.toml b/widgets/panel/Cargo.toml
new file mode 100644
index 0000000..e5a3e1e
--- /dev/null
+++ b/widgets/panel/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-panel"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-panel — firma visual transversal: gradiente vertical casi imperceptible + hairline accent en el top edge. Helper paint_with + wrapper panel_view. La capa que vuelve reconocible al sistema sin cargar."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/panel/src/lib.rs b/widgets/panel/src/lib.rs
new file mode 100644
index 0000000..be2fe76
--- /dev/null
+++ b/widgets/panel/src/lib.rs
@@ -0,0 +1,239 @@
+//! `llimphi-widget-panel` — firma visual transversal de los paneles gioser.
+//!
+//! Aporta dos detalles que aplicados consistentemente vuelven al sistema
+//! reconocible sin que se note "diseñado":
+//!
+//! 1. **Gradiente vertical casi imperceptible** — el fondo del panel no
+//!    es un color sólido sino una interpolación lineal entre una versión
+//!    ligeramente más clara (top) y una ligeramente más oscura (bot) del
+//!    color base. La diferencia es ~4% en valor — invisible al primer
+//!    vistazo pero el ojo lo registra como "tallado" en vez de "pintado".
+//!
+//! 2. **Hairline accent en el top edge** — una línea horizontal de 1px
+//!    en el color accent del theme, al ~30% de alpha, justo en el borde
+//!    superior del panel. Funciona como "hilo de identidad" que cose
+//!    todos los paneles del sistema: aparece en modales, dropdowns,
+//!    cards, sidebars; siempre el mismo grosor, siempre el mismo color.
+//!
+//! ## API
+//!
+//! - [`PanelStyle`] — bundle de tokens (color base, accent, radio,
+//!   alpha del hairline, fuerza del gradiente).
+//! - [`panel_signature_painter`] — `Fn` para `View::paint_with`. Útil si
+//!   ya tenés un View configurado y querés sumarle la firma sin envolver.
+//! - [`panel_view`] — convenience: arma el View completo con la firma
+//!   aplicada, recibe los hijos como `Vec<View<Msg>>`.
+//!
+//! ## Cuándo usarlo
+//!
+//! - SÍ: modales, dropdowns, cards prominentes, columnas de layout,
+//!   shortcuts-help, paneles flotantes.
+//! - NO: chips, badges, toasts, items de lista (la firma es para
+//!   superficies grandes; en piezas chiquitas es ruido).
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::prelude::{percent, Size, Style};
+use llimphi_ui::llimphi_raster::kurbo::{Affine, Point, Rect as KurboRect, RoundedRect};
+use llimphi_ui::llimphi_raster::peniko::{color::AlphaColor, Color, Fill, Gradient};
+use llimphi_ui::{PaintRect, View};
+use llimphi_theme::{alpha, radius, Theme};
+
+/// Token bundle de la firma visual.
+#[derive(Debug, Clone, Copy)]
+pub struct PanelStyle {
+    /// Color base del panel (típico: `theme.bg_panel`).
+    pub bg_base: Color,
+    /// Color del hairline (típico: `theme.accent`).
+    pub accent: Color,
+    /// Radio de las esquinas (típico: `radius::MD` para cards, `radius::LG`
+    /// para modales/overlays).
+    pub radius: f64,
+    /// Alpha del hairline (0.0–1.0). Por debajo de 0.20 se pierde; por
+    /// encima de 0.45 se vuelve dominante. Default 0.30.
+    pub hairline_alpha: f32,
+    /// Fuerza del gradiente — cada componente RGB se desplaza ±gradient
+    /// (en escala 0.0–1.0). 0.04 = 4% = imperceptible-pero-presente.
+    /// Subir más sólo si el theme es muy claro y el efecto no llega.
+    pub gradient_strength: f32,
+}
+
+impl PanelStyle {
+    /// Estilo estándar para cards / sidebars / paneles medianos.
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            bg_base: t.bg_panel,
+            accent: t.accent,
+            radius: radius::MD,
+            hairline_alpha: alpha::SCRIM as f32 / 255.0 * 1.2, // ~0.30
+            gradient_strength: 0.04,
+        }
+    }
+
+    /// Variante para superficies grandes — modales, splash, overlays.
+    /// Esquinas más generosas, gradiente y hairline un toque más marcados.
+    pub fn from_theme_large(t: &Theme) -> Self {
+        Self {
+            bg_base: t.bg_panel,
+            accent: t.accent,
+            radius: radius::LG,
+            hairline_alpha: 0.35,
+            gradient_strength: 0.05,
+        }
+    }
+
+    /// Variante neutra — sin hairline (panels que no deben llevar la
+    /// "firma" porque son piezas auxiliares). Mantiene el gradiente.
+    pub fn neutral(t: &Theme) -> Self {
+        Self {
+            bg_base: t.bg_panel,
+            accent: t.accent,
+            radius: radius::MD,
+            hairline_alpha: 0.0,
+            gradient_strength: 0.03,
+        }
+    }
+
+    /// Color del top del gradiente: base aclarada.
+    pub fn bg_top(&self) -> Color {
+        shift(self.bg_base, self.gradient_strength)
+    }
+
+    /// Color del bottom del gradiente: base oscurecida.
+    pub fn bg_bot(&self) -> Color {
+        shift(self.bg_base, -self.gradient_strength)
+    }
+}
+
+/// Devuelve la closure de pintura que aplica la firma sobre el rect del
+/// nodo. Pasarla a `View::paint_with` para sumar la firma a un View
+/// existente. El View NO debe tener `.fill(...)` setteado — el gradient
+/// reemplaza el fill sólido.
+///
+/// Nota: el View debe llamar `.radius(style.radius)` en sí mismo si quiere
+/// que clip/hit-test/borders respeten las esquinas. La firma pinta el
+/// gradiente como `RoundedRect` con el mismo `radius`, así que la
+/// silueta visual es consistente independientemente del clipping.
+pub fn panel_signature_painter(
+    style: PanelStyle,
+) -> impl Fn(&mut llimphi_ui::llimphi_raster::vello::Scene, &mut llimphi_ui::llimphi_text::Typesetter, PaintRect)
+       + Send
+       + Sync
+       + 'static {
+    move |scene, _ts, rect| {
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+
+        // === 1) Gradiente vertical en RoundedRect ===
+        let x0 = rect.x as f64;
+        let y0 = rect.y as f64;
+        let x1 = (rect.x + rect.w) as f64;
+        let y1 = (rect.y + rect.h) as f64;
+        let rr = RoundedRect::new(x0, y0, x1, y1, style.radius);
+        let gradient = Gradient::new_linear(
+            Point::new(x0, y0),
+            Point::new(x0, y1),
+        )
+        .with_stops([style.bg_top(), style.bg_bot()].as_slice());
+        scene.fill(Fill::NonZero, Affine::IDENTITY, &gradient, None, &rr);
+
+        // === 2) Hairline accent en el top edge ===
+        // Se acorta horizontalmente para no chocar con las esquinas
+        // redondeadas — queda inscrito en el "techo recto" del panel.
+        if style.hairline_alpha > 0.0 && rect.w > style.radius as f32 * 2.0 + 4.0 {
+            let hairline_color = with_alpha_mul(style.accent, style.hairline_alpha);
+            let hairline = KurboRect::new(
+                x0 + style.radius,
+                y0,
+                x1 - style.radius,
+                y0 + 1.0,
+            );
+            scene.fill(Fill::NonZero, Affine::IDENTITY, hairline_color, None, &hairline);
+        }
+    }
+}
+
+/// Convenience: arma un `View` con la firma aplicada y los `children`
+/// adentro. Equivalente a:
+///
+/// ```ignore
+/// View::new(Style { size: full, ..Default::default() })
+///     .paint_with(panel_signature_painter(style))
+///     .radius(style.radius)
+///     .clip(true)
+///     .children(children)
+/// ```
+///
+/// Para layouts custom (size específico, padding, flex direction), usar
+/// `panel_signature_painter` directamente y construir el View a mano.
+pub fn panel_view<Msg: Clone + 'static>(
+    children: Vec<View<Msg>>,
+    style: PanelStyle,
+) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .paint_with(panel_signature_painter(style))
+    .radius(style.radius)
+    .clip(true)
+    .children(children)
+}
+
+// =====================================================================
+// Helpers internos
+// =====================================================================
+
+/// Desplaza cada componente RGB de `c` por `delta` (positivo aclara,
+/// negativo oscurece). Clampea en [0,1]. El alpha queda intacto.
+fn shift(c: Color, delta: f32) -> Color {
+    let [r, g, b, a] = c.components;
+    AlphaColor::new([
+        (r + delta).clamp(0.0, 1.0),
+        (g + delta).clamp(0.0, 1.0),
+        (b + delta).clamp(0.0, 1.0),
+        a,
+    ])
+}
+
+fn with_alpha_mul(c: Color, mult: f32) -> Color {
+    let [r, g, b, a] = c.components;
+    AlphaColor::new([r, g, b, a * mult])
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn bg_top_is_brighter_than_bg_bot() {
+        let t = Theme::dark();
+        let s = PanelStyle::from_theme(&t);
+        let top = s.bg_top();
+        let bot = s.bg_bot();
+        // El top debe tener cada canal RGB ≥ al del bot (es más claro).
+        for i in 0..3 {
+            assert!(top.components[i] >= bot.components[i],
+                "canal {i}: top {} < bot {}", top.components[i], bot.components[i]);
+        }
+    }
+
+    #[test]
+    fn neutral_style_has_no_hairline() {
+        let t = Theme::dark();
+        let s = PanelStyle::neutral(&t);
+        assert_eq!(s.hairline_alpha, 0.0);
+    }
+
+    #[test]
+    fn shift_clamps_to_unit() {
+        let c = Color::from_rgba8(250, 250, 250, 255);
+        let bright = shift(c, 0.5);
+        assert!(bright.components[0] <= 1.0);
+        assert!(bright.components[1] <= 1.0);
+    }
+}
diff --git a/widgets/panes/Cargo.toml b/widgets/panes/Cargo.toml
new file mode 100644
index 0000000..0e5d73c
--- /dev/null
+++ b/widgets/panes/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-panes"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-panes — árbol de paneles BSP estilo tmux: hojas opacas (`View<Msg>`) que se parten horizontal/vertical, se cierran, enfocan y redimensionan arrastrando divisores. La base para montar cualquier componente de gioser en un layout intercambiable."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/panes/examples/panes_demo.rs b/widgets/panes/examples/panes_demo.rs
new file mode 100644
index 0000000..d4fb11c
--- /dev/null
+++ b/widgets/panes/examples/panes_demo.rs
@@ -0,0 +1,319 @@
+//! Demo de `llimphi-widget-panes` — "tmux de componentes gioser".
+//!
+//! Dos tipos de panel heterogéneos (Contador y Notas) conviviendo en un
+//! mismo árbol BSP que se parte horizontal/vertical, se cierra, se enfoca
+//! (click) y se redimensiona (arrastrando los divisores). Prueba de punta
+//! a punta de que componentes distintos se montan en un layout
+//! intercambiable con splits resizables.
+//!
+//! Correr:  `cargo run -p llimphi-widget-panes --example panes_demo --release`
+
+use std::collections::HashMap;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    Rect,
+};
+use llimphi_ui::{App, DragPhase, Handle, View};
+use llimphi_theme::Theme;
+use llimphi_widget_panes::{panes_view, Axis, Layout, PaneId, PanesPalette, Side};
+
+struct Demo;
+
+#[derive(Clone)]
+enum Msg {
+    Focus(PaneId),
+    Split(Axis),
+    Close,
+    Resize(Vec<Side>, f32),
+    Inc(PaneId),
+    Dec(PaneId),
+    AddNote(PaneId),
+}
+
+enum Kind {
+    Counter(i64),
+    Notes(Vec<String>),
+}
+
+struct Pane {
+    title: String,
+    kind: Kind,
+}
+
+struct Model {
+    layout: Layout,
+    panes: HashMap<PaneId, Pane>,
+    focused: PaneId,
+    next_id: PaneId,
+    theme: Theme,
+}
+
+impl App for Demo {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "panes — tmux de componentes gioser"
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        let mut panes = HashMap::new();
+        panes.insert(
+            1,
+            Pane {
+                title: "Contador".into(),
+                kind: Kind::Counter(0),
+            },
+        );
+        panes.insert(
+            2,
+            Pane {
+                title: "Notas".into(),
+                kind: Kind::Notes(vec!["arrastrá el divisor del medio →".into()]),
+            },
+        );
+        let mut layout = Layout::single(1);
+        layout.split(1, 2, Axis::Horizontal);
+        Model {
+            layout,
+            panes,
+            focused: 1,
+            next_id: 3,
+            theme: Theme::dark(),
+        }
+    }
+
+    fn update(mut model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
+        match msg {
+            Msg::Focus(id) => model.focused = id,
+            Msg::Split(axis) => {
+                let id = model.next_id;
+                model.next_id += 1;
+                let kind = if id % 2 == 0 {
+                    Kind::Counter(0)
+                } else {
+                    Kind::Notes(vec![])
+                };
+                let title = match &kind {
+                    Kind::Counter(_) => "Contador".to_string(),
+                    Kind::Notes(_) => "Notas".to_string(),
+                };
+                model.panes.insert(id, Pane { title, kind });
+                model.layout.split(model.focused, id, axis);
+                model.focused = id;
+            }
+            Msg::Close => {
+                if model.layout.count() > 1 {
+                    let target = model.focused;
+                    let (nl, removed) = model.layout.clone().without(target);
+                    if removed {
+                        model.layout = nl;
+                        model.panes.remove(&target);
+                        model.focused = model.layout.first_leaf();
+                    }
+                }
+            }
+            Msg::Resize(path, d) => model.layout.resize(&path, d),
+            Msg::Inc(id) => {
+                if let Some(Pane {
+                    kind: Kind::Counter(n),
+                    ..
+                }) = model.panes.get_mut(&id)
+                {
+                    *n += 1;
+                }
+            }
+            Msg::Dec(id) => {
+                if let Some(Pane {
+                    kind: Kind::Counter(n),
+                    ..
+                }) = model.panes.get_mut(&id)
+                {
+                    *n -= 1;
+                }
+            }
+            Msg::AddNote(id) => {
+                if let Some(Pane {
+                    kind: Kind::Notes(v),
+                    ..
+                }) = model.panes.get_mut(&id)
+                {
+                    let n = v.len() + 1;
+                    v.push(format!("nota #{n}"));
+                }
+            }
+        }
+        model
+    }
+
+    fn view(model: &Model) -> View<Msg> {
+        let t = &model.theme;
+        let toolbar = View::new(Style {
+            flex_direction: FlexDirection::Row,
+            gap: Size {
+                width: length(8.0),
+                height: length(8.0),
+            },
+            padding: uniform(8.0),
+            flex_shrink: 0.0,
+            ..Default::default()
+        })
+        .fill(t.bg_panel)
+        .children(vec![
+            button("Split →", Msg::Split(Axis::Horizontal), t),
+            button("Split ↓", Msg::Split(Axis::Vertical), t),
+            button("Cerrar", Msg::Close, t),
+            View::new(Style {
+                flex_grow: 1.0,
+                ..Default::default()
+            }),
+            label(
+                format!("foco #{}  ·  {} paneles", model.focused, model.layout.count()),
+                13.0,
+                t.fg_muted,
+            ),
+        ]);
+
+        let palette = PanesPalette::from_theme(t);
+        let panes = &model.panes;
+        let theme = t;
+        let area = panes_view(
+            &model.layout,
+            model.focused,
+            move |id| render_pane(panes, theme, id),
+            |path, phase, d| {
+                let _ = phase;
+                Some(Msg::Resize(path, d))
+            },
+            Msg::Focus,
+            &palette,
+        );
+
+        let area_wrap = View::new(Style {
+            flex_grow: 1.0,
+            size: Size {
+                width: percent(1.0),
+                height: percent(1.0),
+            },
+            min_size: Size {
+                width: length(0.0),
+                height: length(0.0),
+            },
+            ..Default::default()
+        })
+        .children(vec![area]);
+
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size {
+                width: percent(1.0),
+                height: percent(1.0),
+            },
+            ..Default::default()
+        })
+        .fill(t.bg_app)
+        .children(vec![toolbar, area_wrap])
+    }
+}
+
+fn render_pane(panes: &HashMap<PaneId, Pane>, t: &Theme, id: PaneId) -> View<Msg> {
+    let Some(pane) = panes.get(&id) else {
+        return label("(panel vacío)".to_string(), 14.0, t.fg_muted);
+    };
+
+    let header = label(format!("{}  #{id}", pane.title), 13.0, t.fg_text);
+
+    let body = match &pane.kind {
+        Kind::Counter(n) => View::new(Style {
+            flex_direction: FlexDirection::Column,
+            gap: Size {
+                width: length(8.0),
+                height: length(8.0),
+            },
+            ..Default::default()
+        })
+        .children(vec![
+            label(format!("{n}"), 44.0, t.accent),
+            View::new(Style {
+                flex_direction: FlexDirection::Row,
+                gap: Size {
+                    width: length(8.0),
+                    height: length(8.0),
+                },
+                ..Default::default()
+            })
+            .children(vec![
+                button("−", Msg::Dec(id), t),
+                button("+", Msg::Inc(id), t),
+            ]),
+        ]),
+        Kind::Notes(v) => {
+            let mut lines: Vec<View<Msg>> = v
+                .iter()
+                .map(|s| label(format!("• {s}"), 14.0, t.fg_text))
+                .collect();
+            lines.push(button("+ nota", Msg::AddNote(id), t));
+            View::new(Style {
+                flex_direction: FlexDirection::Column,
+                gap: Size {
+                    width: length(6.0),
+                    height: length(6.0),
+                },
+                ..Default::default()
+            })
+            .children(lines)
+        }
+    };
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        gap: Size {
+            width: length(10.0),
+            height: length(10.0),
+        },
+        padding: uniform(12.0),
+        flex_grow: 1.0,
+        ..Default::default()
+    })
+    .children(vec![header, body])
+}
+
+fn button(text: &str, msg: Msg, t: &Theme) -> View<Msg> {
+    View::new(Style {
+        padding: Rect {
+            left: length(12.0),
+            right: length(12.0),
+            top: length(6.0),
+            bottom: length(6.0),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(t.bg_button)
+    .hover_fill(t.bg_button_hover)
+    .radius(6.0)
+    .on_click(msg)
+    .children(vec![label(text.to_string(), 14.0, t.fg_text)])
+}
+
+fn label(
+    text: String,
+    size: f32,
+    color: llimphi_ui::llimphi_raster::peniko::Color,
+) -> View<Msg> {
+    View::new(Style::default()).text(text, size, color)
+}
+
+fn uniform(px: f32) -> Rect<llimphi_ui::llimphi_layout::taffy::prelude::LengthPercentage> {
+    Rect {
+        left: length(px),
+        right: length(px),
+        top: length(px),
+        bottom: length(px),
+    }
+}
+
+fn main() {
+    llimphi_ui::run::<Demo>();
+}
diff --git a/widgets/panes/src/lib.rs b/widgets/panes/src/lib.rs
new file mode 100644
index 0000000..cecee75
--- /dev/null
+++ b/widgets/panes/src/lib.rs
@@ -0,0 +1,505 @@
+//! `llimphi-widget-panes` — árbol de paneles BSP estilo tmux.
+//!
+//! La pieza que faltaba para "montar cualquier componente de gioser en un
+//! layout intercambiable con splits resizables". El widget NO conoce los
+//! dominios: hospeda hojas opacas (`View<Msg>`) en un árbol binario que el
+//! usuario parte (horizontal/vertical), cierra, enfoca (click) y
+//! redimensiona (arrastrando los divisores). tmux, pero in-process y sobre
+//! el bucle Elm de Llimphi.
+//!
+//! No confundir con `llimphi-widget-panel` (el chrome de UN panel con
+//! título): esto es el árbol de N panes.
+//!
+//! ## Modelo
+//!
+//! - [`Layout`] es la **estructura** del árbol (qué hoja vive dónde, con
+//!   qué ratio cada split). Vive en el `Model` del host y se manipula con
+//!   [`Layout::split`], [`Layout::without`] y [`Layout::resize`].
+//! - El **contenido** de cada hoja lo provee el host vía un closure
+//!   `FnMut(PaneId) -> View<Msg>` que se invoca al construir la vista —
+//!   por eso puede tomar prestado el `Model` (no necesita ser `'static`).
+//! - El handler de resize sí se guarda en el árbol de vistas (lo agarra el
+//!   divisor draggable), así que ése debe ser `'static + Send + Sync`. El
+//!   de focus se evalúa al construir (porque `on_click` toma el `Msg` por
+//!   valor), así que no tiene esa restricción.
+//!
+//! ## Por qué no `Box<dyn Any>`
+//!
+//! Igual que el resto del repo: el host mantiene un `enum` de sus tipos de
+//! panel y hace dispatch estático. El widget es genérico sobre `Msg`; el
+//! host decide cómo materializar cada hoja. Cero downcasting.
+
+#![forbid(unsafe_code)]
+
+use std::sync::Arc;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Dimension, FlexDirection, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::{DragPhase, View};
+
+/// Identificador estable de un panel. El host lo asigna (un contador
+/// monótono basta) y lo usa como llave hacia su propio estado.
+pub type PaneId = u64;
+
+/// Eje del split. `Horizontal` pone los panes lado a lado (divisor
+/// vertical, se arrastra en X); `Vertical` los apila (divisor horizontal,
+/// se arrastra en Y).
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Axis {
+    Horizontal,
+    Vertical,
+}
+
+/// Rama de un split, usada para direccionar un nodo dentro del árbol.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Side {
+    First,
+    Second,
+}
+
+/// Árbol binario de paneles. `Leaf` es un panel; `Split` divide el espacio
+/// entre dos subárboles con un `ratio` (fracción que ocupa el primero).
+#[derive(Debug, Clone, PartialEq)]
+pub enum Layout {
+    Leaf(PaneId),
+    Split {
+        axis: Axis,
+        /// Fracción del eje que ocupa el subárbol `first` (0..1).
+        ratio: f32,
+        first: Box<Layout>,
+        second: Box<Layout>,
+    },
+}
+
+impl Layout {
+    /// Árbol de un solo panel.
+    pub fn single(id: PaneId) -> Self {
+        Layout::Leaf(id)
+    }
+
+    /// Cantidad de hojas (paneles) en el árbol.
+    pub fn count(&self) -> usize {
+        match self {
+            Layout::Leaf(_) => 1,
+            Layout::Split { first, second, .. } => first.count() + second.count(),
+        }
+    }
+
+    /// Lista de todas las hojas, en orden de aparición (izq→der / arr→ab).
+    pub fn leaves(&self) -> Vec<PaneId> {
+        let mut out = Vec::new();
+        self.collect_leaves(&mut out);
+        out
+    }
+
+    fn collect_leaves(&self, out: &mut Vec<PaneId>) {
+        match self {
+            Layout::Leaf(id) => out.push(*id),
+            Layout::Split { first, second, .. } => {
+                first.collect_leaves(out);
+                second.collect_leaves(out);
+            }
+        }
+    }
+
+    /// `true` si la hoja existe en el árbol.
+    pub fn contains(&self, id: PaneId) -> bool {
+        match self {
+            Layout::Leaf(x) => *x == id,
+            Layout::Split { first, second, .. } => first.contains(id) || second.contains(id),
+        }
+    }
+
+    /// Primera hoja (la de más arriba/izquierda). Útil para reenfocar tras
+    /// cerrar un panel.
+    pub fn first_leaf(&self) -> PaneId {
+        match self {
+            Layout::Leaf(id) => *id,
+            Layout::Split { first, .. } => first.first_leaf(),
+        }
+    }
+
+    /// Parte la hoja `target` en dos: `target` queda en `Side::First` y la
+    /// nueva hoja `new` en `Side::Second`, con ratio 0.5. Devuelve `true`
+    /// si encontró el target.
+    pub fn split(&mut self, target: PaneId, new: PaneId, axis: Axis) -> bool {
+        match self {
+            Layout::Leaf(id) if *id == target => {
+                *self = Layout::Split {
+                    axis,
+                    ratio: 0.5,
+                    first: Box::new(Layout::Leaf(target)),
+                    second: Box::new(Layout::Leaf(new)),
+                };
+                true
+            }
+            Layout::Leaf(_) => false,
+            Layout::Split { first, second, .. } => {
+                first.split(target, new, axis) || second.split(target, new, axis)
+            }
+        }
+    }
+
+    /// Devuelve el árbol sin la hoja `target`, colapsando el split padre en
+    /// el hermano sobreviviente. El `bool` indica si removió algo. Quitar la
+    /// única hoja raíz es no-op (devuelve el árbol intacto, `false`).
+    pub fn without(self, target: PaneId) -> (Layout, bool) {
+        match self {
+            Layout::Leaf(id) => (Layout::Leaf(id), false),
+            Layout::Split {
+                axis,
+                ratio,
+                first,
+                second,
+            } => {
+                if matches!(*first, Layout::Leaf(t) if t == target) {
+                    return (*second, true);
+                }
+                if matches!(*second, Layout::Leaf(t) if t == target) {
+                    return (*first, true);
+                }
+                let (nf, rf) = first.without(target);
+                if rf {
+                    return (
+                        Layout::Split {
+                            axis,
+                            ratio,
+                            first: Box::new(nf),
+                            second,
+                        },
+                        true,
+                    );
+                }
+                let (ns, rs) = second.without(target);
+                (
+                    Layout::Split {
+                        axis,
+                        ratio,
+                        first: Box::new(nf),
+                        second: Box::new(ns),
+                    },
+                    rs,
+                )
+            }
+        }
+    }
+
+    /// Ajusta el ratio del split direccionado por `path` (camino de raíz a
+    /// ese nodo). `delta` se suma al ratio, clamp a [0.05, 0.95].
+    pub fn resize(&mut self, path: &[Side], delta: f32) {
+        match self {
+            Layout::Split {
+                ratio,
+                first,
+                second,
+                ..
+            } => match path.split_first() {
+                None => *ratio = (*ratio + delta).clamp(0.05, 0.95),
+                Some((Side::First, rest)) => first.resize(rest, delta),
+                Some((Side::Second, rest)) => second.resize(rest, delta),
+            },
+            Layout::Leaf(_) => {}
+        }
+    }
+}
+
+/// Ratio movido por píxel arrastrado. No conocemos el tamaño en px del
+/// contenedor en tiempo de `view` (limitación conocida de Llimphi, la
+/// misma raíz por la que no hay `View::map`), así que aproximamos con una
+/// sensibilidad fija. El clamp en [`Layout::resize`] evita degenerar.
+const RESIZE_SENSITIVITY: f32 = 1.0 / 600.0;
+
+/// Paleta del árbol de paneles.
+#[derive(Debug, Clone, Copy)]
+pub struct PanesPalette {
+    pub bg: Color,
+    pub border: Color,
+    pub focus_border: Color,
+    pub divider: Color,
+    pub divider_hover: Color,
+    pub thickness: f32,
+}
+
+impl Default for PanesPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl PanesPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg: t.bg_app,
+            border: t.border,
+            focus_border: t.accent,
+            divider: t.border,
+            divider_hover: t.accent,
+            thickness: 6.0,
+        }
+    }
+}
+
+/// Renderiza el árbol de paneles.
+///
+/// - `leaf` materializa el contenido de cada hoja; se llama una vez por
+///   panel mientras se construye la vista (puede tomar prestado el host).
+/// - `on_resize` recibe el camino al split, la fase del drag y el delta de
+///   ratio; devolver `Some(msg)` dispara el `update` (el host llama
+///   [`Layout::resize`]).
+/// - `on_focus` produce el msg al hacer click en un panel.
+pub fn panes_view<Msg>(
+    layout: &Layout,
+    focused: PaneId,
+    mut leaf: impl FnMut(PaneId) -> View<Msg>,
+    on_resize: impl Fn(Vec<Side>, DragPhase, f32) -> Option<Msg> + Send + Sync + 'static,
+    on_focus: impl Fn(PaneId) -> Msg,
+    palette: &PanesPalette,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+{
+    let on_resize: Arc<dyn Fn(Vec<Side>, DragPhase, f32) -> Option<Msg> + Send + Sync> =
+        Arc::new(on_resize);
+    render(
+        layout,
+        focused,
+        &mut leaf,
+        &on_resize,
+        &on_focus,
+        Vec::new(),
+        palette,
+    )
+}
+
+#[allow(clippy::too_many_arguments)]
+fn render<Msg>(
+    layout: &Layout,
+    focused: PaneId,
+    leaf: &mut dyn FnMut(PaneId) -> View<Msg>,
+    on_resize: &Arc<dyn Fn(Vec<Side>, DragPhase, f32) -> Option<Msg> + Send + Sync>,
+    on_focus: &dyn Fn(PaneId) -> Msg,
+    path: Vec<Side>,
+    palette: &PanesPalette,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+{
+    match layout {
+        Layout::Leaf(id) => {
+            let id = *id;
+            let content = leaf(id);
+            let is_focused = id == focused;
+            let border_col = if is_focused {
+                palette.focus_border
+            } else {
+                palette.border
+            };
+            let border_w = if is_focused { 2.0 } else { 1.0 };
+
+            // Caja interior (fondo del panel) con el contenido del host.
+            let inner = View::new(Style {
+                flex_grow: 1.0,
+                flex_direction: FlexDirection::Column,
+                size: full(),
+                min_size: zero(),
+                ..Default::default()
+            })
+            .fill(palette.bg)
+            .children(vec![content]);
+
+            // Marco: no hay `stroke`, así que el borde es un contenedor
+            // relleno con un padding del grosor → simula el trazo.
+            View::new(Style {
+                flex_direction: FlexDirection::Column,
+                size: full(),
+                min_size: zero(),
+                padding: uniform(border_w),
+                ..Default::default()
+            })
+            .fill(border_col)
+            .on_click(on_focus(id))
+            .children(vec![inner])
+        }
+        Layout::Split {
+            axis,
+            ratio,
+            first,
+            second,
+        } => {
+            let flex_dir = match axis {
+                Axis::Horizontal => FlexDirection::Row,
+                Axis::Vertical => FlexDirection::Column,
+            };
+
+            let mut p1 = path.clone();
+            p1.push(Side::First);
+            let mut p2 = path.clone();
+            p2.push(Side::Second);
+
+            let a = render(first, focused, leaf, on_resize, on_focus, p1, palette);
+            let b = render(second, focused, leaf, on_resize, on_focus, p2, palette);
+
+            let pane_a = grow_pane(a, *ratio);
+            let pane_b = grow_pane(b, 1.0 - *ratio);
+            let divider = divider_view(*axis, palette, on_resize.clone(), path.clone());
+
+            View::new(Style {
+                flex_direction: flex_dir,
+                size: full(),
+                min_size: zero(),
+                ..Default::default()
+            })
+            .children(vec![pane_a, divider, pane_b])
+        }
+    }
+}
+
+fn grow_pane<Msg>(view: View<Msg>, grow: f32) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+{
+    View::new(Style {
+        flex_grow: grow.max(0.01),
+        flex_shrink: 1.0,
+        flex_basis: length(0.0),
+        size: full(),
+        min_size: zero(),
+        ..Default::default()
+    })
+    .children(vec![view])
+}
+
+fn divider_view<Msg>(
+    axis: Axis,
+    palette: &PanesPalette,
+    on_resize: Arc<dyn Fn(Vec<Side>, DragPhase, f32) -> Option<Msg> + Send + Sync>,
+    path: Vec<Side>,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+{
+    let (width, height) = match axis {
+        Axis::Horizontal => (length(palette.thickness), percent(1.0_f32)),
+        Axis::Vertical => (percent(1.0_f32), length(palette.thickness)),
+    };
+    View::new(Style {
+        size: Size { width, height },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.divider)
+    .hover_fill(palette.divider_hover)
+    .draggable(move |phase, dx, dy| {
+        let main = match axis {
+            Axis::Horizontal => dx,
+            Axis::Vertical => dy,
+        };
+        (on_resize)(path.clone(), phase, main * RESIZE_SENSITIVITY)
+    })
+}
+
+fn full() -> Size<Dimension> {
+    Size {
+        width: percent(1.0_f32),
+        height: percent(1.0_f32),
+    }
+}
+
+fn zero() -> Size<Dimension> {
+    Size {
+        width: length(0.0_f32),
+        height: length(0.0_f32),
+    }
+}
+
+fn uniform(px: f32) -> Rect<llimphi_ui::llimphi_layout::taffy::prelude::LengthPercentage> {
+    Rect {
+        left: length(px),
+        right: length(px),
+        top: length(px),
+        bottom: length(px),
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn single_has_one_leaf() {
+        let l = Layout::single(1);
+        assert_eq!(l.count(), 1);
+        assert_eq!(l.leaves(), vec![1]);
+        assert_eq!(l.first_leaf(), 1);
+    }
+
+    #[test]
+    fn split_creates_two_leaves() {
+        let mut l = Layout::single(1);
+        assert!(l.split(1, 2, Axis::Horizontal));
+        assert_eq!(l.count(), 2);
+        assert_eq!(l.leaves(), vec![1, 2]);
+        assert!(l.contains(2));
+    }
+
+    #[test]
+    fn split_missing_target_is_noop() {
+        let mut l = Layout::single(1);
+        assert!(!l.split(99, 2, Axis::Vertical));
+        assert_eq!(l.count(), 1);
+    }
+
+    #[test]
+    fn nested_split_then_close_collapses() {
+        let mut l = Layout::single(1);
+        l.split(1, 2, Axis::Horizontal);
+        l.split(2, 3, Axis::Vertical); // 2 se parte en [2 / 3]
+        assert_eq!(l.leaves(), vec![1, 2, 3]);
+
+        let (l, removed) = l.without(3);
+        assert!(removed);
+        assert_eq!(l.leaves(), vec![1, 2]);
+
+        let (l, removed) = l.without(1);
+        assert!(removed);
+        assert_eq!(l.leaves(), vec![2]);
+
+        let (l, removed) = l.without(2);
+        assert!(!removed);
+        assert_eq!(l.leaves(), vec![2]);
+    }
+
+    #[test]
+    fn resize_adjusts_ratio_with_clamp() {
+        let mut l = Layout::single(1);
+        l.split(1, 2, Axis::Horizontal);
+        l.resize(&[], 0.2);
+        if let Layout::Split { ratio, .. } = &l {
+            assert!((ratio - 0.7).abs() < 1e-6);
+        } else {
+            panic!("esperaba split");
+        }
+        l.resize(&[], -10.0);
+        if let Layout::Split { ratio, .. } = &l {
+            assert!((ratio - 0.05).abs() < 1e-6);
+        }
+    }
+
+    #[test]
+    fn resize_nested_path() {
+        let mut l = Layout::single(1);
+        l.split(1, 2, Axis::Horizontal);
+        l.split(2, 3, Axis::Vertical);
+        l.resize(&[Side::Second], 0.1);
+        if let Layout::Split { second, .. } = &l {
+            if let Layout::Split { ratio, .. } = second.as_ref() {
+                assert!((ratio - 0.6).abs() < 1e-6);
+                return;
+            }
+        }
+        panic!("estructura inesperada");
+    }
+}
diff --git a/widgets/progress/Cargo.toml b/widgets/progress/Cargo.toml
new file mode 100644
index 0000000..db8b579
--- /dev/null
+++ b/widgets/progress/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-progress"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-progress — barras de progreso lineales y radiales determinadas (0.0-1.0). Para indeterminadas usar llimphi-widget-spinner."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/progress/src/lib.rs b/widgets/progress/src/lib.rs
new file mode 100644
index 0000000..7858be9
--- /dev/null
+++ b/widgets/progress/src/lib.rs
@@ -0,0 +1,126 @@
+//! `llimphi-widget-progress` — progreso determinado, lineal o radial.
+//!
+//! Determinado = la app conoce el porcentaje (`0.0..=1.0`). Para
+//! progreso indeterminado (la op está corriendo, no sé cuánto falta),
+//! usar `llimphi-widget-spinner`.
+//!
+//! Dos formas:
+//! - [`linear_progress_view`] — barra horizontal con relleno proporcional.
+//! - [`radial_progress_view`] — anillo cuya porción llena indica el avance.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Position, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::kurbo::{Affine, Arc, Cap, Stroke};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::View;
+use llimphi_theme::radius;
+
+/// Barra horizontal: una pista (`track`) con un fill proporcional al
+/// `progress` (0.0..=1.0) pintado encima.
+pub fn linear_progress_view<Msg: Clone + 'static>(
+    progress: f32,
+    track_color: Color,
+    fill_color: Color,
+    height_px: f32,
+) -> View<Msg> {
+    let p = progress.clamp(0.0, 1.0);
+    let fill_radius = radius::XS;
+    let fill = View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(0.0_f32),
+            top: length(0.0_f32),
+            right: llimphi_ui::llimphi_layout::taffy::prelude::auto(),
+            bottom: length(0.0_f32),
+        },
+        size: Size {
+            width: percent(p),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(fill_color)
+    .radius(fill_radius)
+    .paint_with(move |scene, _ts, rect| {
+        // Gloss superior sobre la porción rellena — la barra deja de
+        // leerse como un rect plano y se siente como una luz que avanza.
+        // Mismo patrón que button/badge (P6).
+        use llimphi_ui::llimphi_raster::kurbo::{Affine, Point, RoundedRect};
+        use llimphi_ui::llimphi_raster::peniko::{Fill, Gradient};
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+        let x0 = rect.x as f64;
+        let y0 = rect.y as f64;
+        let x1 = (rect.x + rect.w) as f64;
+        let y1 = (rect.y + rect.h) as f64;
+        let y_mid = y0 + (y1 - y0) * 0.5;
+        let rr = RoundedRect::new(x0, y0, x1, y1, fill_radius);
+        let top = Color::from_rgba8(255, 255, 255, 50);
+        let bot = Color::from_rgba8(255, 255, 255, 0);
+        let g = Gradient::new_linear(Point::new(x0, y0), Point::new(x0, y_mid))
+            .with_stops([top, bot].as_slice());
+        scene.fill(Fill::NonZero, Affine::IDENTITY, &g, None, &rr);
+    });
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(height_px),
+        },
+        ..Default::default()
+    })
+    .fill(track_color)
+    .radius(radius::XS)
+    .children(vec![fill])
+}
+
+/// Anillo cuya porción angular llena indica el avance. Empieza desde
+/// arriba (12 en punto) y gira en sentido horario, igual que la
+/// convención de relojes y muchos progress radiales.
+pub fn radial_progress_view<Msg: Clone + 'static>(
+    progress: f32,
+    track_color: Color,
+    fill_color: Color,
+    stroke_width_ratio: f32,
+) -> View<Msg> {
+    let p = progress.clamp(0.0, 1.0);
+    let sw = stroke_width_ratio;
+    View::new(Style {
+        position: Position::Absolute,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .paint_with(move |scene, _ts, rect| {
+        let side = rect.w.min(rect.h) as f64;
+        if side <= 0.0 {
+            return;
+        }
+        let cx = rect.x as f64 + rect.w as f64 * 0.5;
+        let cy = rect.y as f64 + rect.h as f64 * 0.5;
+        let stroke_w = (side * sw as f64).max(1.0);
+        let radius = (side - stroke_w) * 0.5;
+        let stroke = Stroke::new(stroke_w).with_caps(Cap::Round);
+
+        // Track completo (anillo gris).
+        let track = Arc::new((cx, cy), (radius, radius), 0.0, std::f64::consts::TAU, 0.0);
+        scene.stroke(&stroke, Affine::IDENTITY, track_color, None, &track);
+
+        // Arco lleno — arranca en -π/2 (12 en punto) y barre `p * 2π`
+        // en sentido horario (positivo en el sistema y-down de vello).
+        if p > 0.0 {
+            let theta0 = -std::f64::consts::FRAC_PI_2;
+            let sweep = std::f64::consts::TAU * p as f64;
+            let fill_arc = Arc::new((cx, cy), (radius, radius), theta0, sweep, 0.0);
+            scene.stroke(&stroke, Affine::IDENTITY, fill_color, None, &fill_arc);
+        }
+    })
+}
diff --git a/widgets/scroll/Cargo.toml b/widgets/scroll/Cargo.toml
new file mode 100644
index 0000000..1aea1a6
--- /dev/null
+++ b/widgets/scroll/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-scroll"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-scroll — área de scroll vertical reutilizable: viewport clipeado + contenido desplazado + barra arrastrable. Stateless (el offset vive en el Model); rueda autocontenida vía View::on_scroll. Helpers puros: clamp_offset, ensure_visible, approach (scroll suave)."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/scroll/src/lib.rs b/widgets/scroll/src/lib.rs
new file mode 100644
index 0000000..9e054b1
--- /dev/null
+++ b/widgets/scroll/src/lib.rs
@@ -0,0 +1,326 @@
+//! `llimphi-widget-scroll` — área de scroll vertical reutilizable.
+//!
+//! Hasta ahora cada app rearmaba el scroll a mano: `App::on_wheel` + un
+//! offset en el `Model` + `clip` + virtualización. Este widget empaqueta
+//! ese patrón en un solo builder, **sin estado propio** (el offset sigue
+//! viviendo en el `Model`, fiel al bucle Elm):
+//!
+//! - **viewport clipeado** de alto fijo (`viewport_len`),
+//! - **contenido desplazado** `-offset` px (overflow recortado),
+//! - **barra de scroll arrastrable** a la derecha (sólo si el contenido
+//!   excede el viewport),
+//! - **rueda autocontenida** vía [`View::on_scroll`]: girar la rueda con
+//!   el cursor sobre el área emite un `Msg` sin que la app rutee nada por
+//!   su `on_wheel` global.
+//!
+//! El caller debe conocer el **alto total del contenido** (`content_len`)
+//! y el **alto visible** (`viewport_len`) — igual que `list`/`grid` ya
+//! piden la ventana visible. Para contenido de filas uniformes es
+//! `n_filas * alto_fila`.
+//!
+//! ## Convención del callback `on_scroll`
+//!
+//! `on_scroll` recibe el **delta en px** a sumar al offset (no el offset
+//! absoluto): tanto la rueda como el arrastre de la barra emiten deltas,
+//! y el caller acumula + clampea en su `update` con [`clamp_offset`]. Es
+//! la misma idea que el `splitter` (el handler de drag se reusa durante
+//! todo el arrastre, así que un offset absoluto capturado se quedaría
+//! viejo; el delta-por-evento siempre es correcto).
+//!
+//! ```ignore
+//! // view:
+//! scroll_y(
+//!     model.offset,
+//!     model.rows.len() as f32 * ROW_H,
+//!     panel_h,
+//!     lista_view,
+//!     Msg::ScrollBy,            // Fn(f32) -> Msg, arg = delta px
+//!     &ScrollPalette::default(),
+//! )
+//! // update:
+//! Msg::ScrollBy(d) => {
+//!     m.offset = clamp_offset(m.offset + d, content_len, viewport_len);
+//! }
+//! ```
+//!
+//! Para llevar una selección a la vista (teclado), ver [`ensure_visible`];
+//! para scroll suave/inercia, ver [`approach`].
+
+#![forbid(unsafe_code)]
+
+use std::sync::Arc;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, percent, Position, Rect, Size, Style},
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::{DragPhase, View};
+
+/// Alto mínimo del thumb en px — para que no desaparezca con contenido
+/// muy largo.
+const MIN_THUMB: f32 = 28.0;
+/// Px de desplazamiento por "línea" de rueda. Aproxima el step de scroll
+/// de un editor (≈3 líneas de texto).
+pub const DEFAULT_LINE_PX: f32 = 48.0;
+/// Ancho de la barra de scroll en px.
+pub const DEFAULT_BAR_WIDTH: f32 = 10.0;
+
+/// Colores de la barra de scroll.
+#[derive(Debug, Clone, Copy)]
+pub struct ScrollPalette {
+    /// Canal de fondo (track).
+    pub track: Color,
+    /// Pulgar (thumb) en reposo.
+    pub thumb: Color,
+    /// Pulgar al pasar el cursor.
+    pub thumb_hover: Color,
+    /// Ancho de la barra y px por línea de rueda.
+    pub bar_width: f32,
+    pub line_px: f32,
+}
+
+impl Default for ScrollPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl ScrollPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            track: t.bg_panel_alt,
+            thumb: t.border,
+            thumb_hover: t.accent,
+            bar_width: DEFAULT_BAR_WIDTH,
+            line_px: DEFAULT_LINE_PX,
+        }
+    }
+}
+
+/// Máximo offset posible: cuánto se puede desplazar antes de que el final
+/// del contenido toque el borde inferior del viewport. `0` si el contenido
+/// entra entero.
+pub fn max_offset(content_len: f32, viewport_len: f32) -> f32 {
+    (content_len - viewport_len).max(0.0)
+}
+
+/// Acota `offset` a `[0, max_offset]`. El caller lo usa en su `update`
+/// tras sumar el delta de [`scroll_y`].
+pub fn clamp_offset(offset: f32, content_len: f32, viewport_len: f32) -> f32 {
+    offset.clamp(0.0, max_offset(content_len, viewport_len))
+}
+
+/// Devuelve el offset que deja **visible** el intervalo vertical
+/// `[item_top, item_top + item_h]` dentro de un viewport de alto
+/// `viewport_len`, partiendo de `offset`. Si ya está visible, lo devuelve
+/// sin cambios. Pensado para "llevar la selección a la vista" al navegar
+/// con teclado (flechas, Page Up/Down). El resultado se acota a `≥ 0`; el
+/// caller puede clampear arriba con [`clamp_offset`] si lo necesita.
+pub fn ensure_visible(offset: f32, viewport_len: f32, item_top: f32, item_h: f32) -> f32 {
+    if item_top < offset {
+        // El item arranca por encima del viewport: subí hasta su tope.
+        item_top.max(0.0)
+    } else if item_top + item_h > offset + viewport_len {
+        // El item termina por debajo: bajá hasta que su fondo toque el borde.
+        (item_top + item_h - viewport_len).max(0.0)
+    } else {
+        offset
+    }
+}
+
+/// Un paso de aproximación exponencial de `current` hacia `target`
+/// (scroll suave / inercia). `factor ∈ (0, 1]`: 1.0 salta de una, 0.2
+/// desliza suave. Cuando la diferencia cae por debajo de 0.5 px aterriza
+/// exacto en `target` (evita el "casi-llega" infinito). El caller lo
+/// dispara por frame vía `Handle::spawn_periodic` guardando `target` en
+/// su `Model`.
+pub fn approach(current: f32, target: f32, factor: f32) -> f32 {
+    let f = factor.clamp(0.0, 1.0);
+    let next = current + (target - current) * f;
+    if (target - next).abs() < 0.5 {
+        target
+    } else {
+        next
+    }
+}
+
+/// Geometría del thumb: `(altura, posición_y)` dentro del track de alto
+/// `viewport_len`, y `offset_por_px` (cuánto offset de contenido equivale
+/// a 1 px de arrastre del thumb). Público para tests y para callers que
+/// quieran pintar su propia barra.
+pub fn thumb_geometry(offset: f32, content_len: f32, viewport_len: f32) -> (f32, f32, f32) {
+    let max_off = max_offset(content_len, viewport_len);
+    if max_off <= 0.0 || content_len <= 0.0 {
+        return (viewport_len, 0.0, 0.0);
+    }
+    let ratio = (viewport_len / content_len).clamp(0.0, 1.0);
+    let thumb_h = (viewport_len * ratio).clamp(MIN_THUMB.min(viewport_len), viewport_len);
+    let travel = (viewport_len - thumb_h).max(0.0);
+    let thumb_y = if max_off > 0.0 {
+        (offset / max_off).clamp(0.0, 1.0) * travel
+    } else {
+        0.0
+    };
+    let offset_per_px = if travel > 0.0 { max_off / travel } else { 0.0 };
+    (thumb_h, thumb_y, offset_per_px)
+}
+
+/// Área de scroll vertical. `offset` es el desplazamiento actual (px, ya
+/// clampeado por el caller). `content_len`/`viewport_len` el alto total y
+/// visible. `content` se desplaza `-offset` y se recorta al viewport.
+/// `on_scroll(delta_px)` se invoca con el delta a sumar al offset (rueda
+/// y arrastre de barra); el caller acumula con [`clamp_offset`].
+pub fn scroll_y<Msg, F>(
+    offset: f32,
+    content_len: f32,
+    viewport_len: f32,
+    content: View<Msg>,
+    on_scroll: F,
+    palette: &ScrollPalette,
+) -> View<Msg>
+where
+    // `Msg` no necesita `Send + Sync`: los closures de rueda/arrastre
+    // capturan el `Arc<dyn Fn + Send + Sync>`, no un `Msg`. Sólo se exige
+    // `Clone` (para montar el `View`) y `'static`.
+    Msg: Clone + 'static,
+    F: Fn(f32) -> Msg + Send + Sync + 'static,
+{
+    let on_scroll = Arc::new(on_scroll);
+
+    // Contenido desplazado: nodo absoluto anclado a left/right (toma el
+    // ancho del viewport) con top = -offset y alto natural. El overflow se
+    // recorta por el `clip` del viewport.
+    let content_wrap = View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            top: length(-offset),
+            left: length(0.0),
+            right: length(0.0),
+            bottom: auto(),
+        },
+        ..Default::default()
+    })
+    .children(vec![content]);
+
+    let mut children = vec![content_wrap];
+
+    // Barra: sólo si hay overflow.
+    if max_offset(content_len, viewport_len) > 0.0 {
+        let (thumb_h, thumb_y, offset_per_px) =
+            thumb_geometry(offset, content_len, viewport_len);
+
+        let on_thumb = on_scroll.clone();
+        let thumb = View::new(Style {
+            position: Position::Absolute,
+            inset: Rect {
+                top: length(thumb_y),
+                right: length(0.0),
+                left: auto(),
+                bottom: auto(),
+            },
+            size: Size {
+                width: length(palette.bar_width),
+                height: length(thumb_h),
+            },
+            ..Default::default()
+        })
+        .fill(palette.thumb)
+        .hover_fill(palette.thumb_hover)
+        .radius((palette.bar_width * 0.5) as f64)
+        .draggable(move |phase, _dx, dy| match phase {
+            // Cada Move trae el delta de px de pantalla del thumb; lo
+            // convertimos a delta de offset de contenido.
+            DragPhase::Move => Some((on_thumb)(dy * offset_per_px)),
+            DragPhase::End => None,
+        });
+
+        let track = View::new(Style {
+            position: Position::Absolute,
+            inset: Rect {
+                top: length(0.0),
+                right: length(0.0),
+                bottom: length(0.0),
+                left: auto(),
+            },
+            size: Size {
+                width: length(palette.bar_width),
+                height: auto(),
+            },
+            ..Default::default()
+        })
+        .fill(palette.track)
+        .children(vec![thumb]);
+
+        children.push(track);
+    }
+
+    // Viewport: alto fijo, ancho del padre, contenido recortado, rueda
+    // local. Position::Relative para ser el bloque contenedor de los
+    // hijos absolutos.
+    let line_px = palette.line_px;
+    let on_wheel = on_scroll;
+    View::new(Style {
+        position: Position::Relative,
+        size: Size {
+            width: percent(1.0),
+            height: length(viewport_len),
+        },
+        ..Default::default()
+    })
+    .clip(true)
+    .on_scroll(move |_dx, dy| Some((on_wheel)(dy * line_px)))
+    .children(children)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn max_y_clamp() {
+        assert_eq!(max_offset(1000.0, 300.0), 700.0);
+        assert_eq!(max_offset(200.0, 300.0), 0.0); // entra entero
+        assert_eq!(clamp_offset(-50.0, 1000.0, 300.0), 0.0);
+        assert_eq!(clamp_offset(9999.0, 1000.0, 300.0), 700.0);
+        assert_eq!(clamp_offset(400.0, 1000.0, 300.0), 400.0);
+    }
+
+    #[test]
+    fn ensure_visible_arriba_abajo_y_sin_cambio() {
+        let vp = 300.0;
+        // Item por encima del offset → subir hasta su tope.
+        assert_eq!(ensure_visible(500.0, vp, 100.0, 20.0), 100.0);
+        // Item por debajo del fondo visible → bajar lo justo.
+        assert_eq!(ensure_visible(0.0, vp, 400.0, 20.0), 120.0); // 400+20-300
+        // Item ya visible → sin cambios.
+        assert_eq!(ensure_visible(50.0, vp, 100.0, 20.0), 50.0);
+        // Nunca negativo.
+        assert_eq!(ensure_visible(50.0, vp, -10.0, 20.0), 0.0);
+    }
+
+    #[test]
+    fn approach_aterriza_exacto() {
+        // Se acerca pero no salta.
+        let a = approach(0.0, 100.0, 0.25);
+        assert!(a > 0.0 && a < 100.0);
+        // Diferencia < 0.5 px → aterriza exacto.
+        assert_eq!(approach(99.8, 100.0, 0.25), 100.0);
+        // factor 1.0 salta de una.
+        assert_eq!(approach(0.0, 100.0, 1.0), 100.0);
+    }
+
+    #[test]
+    fn thumb_proporcional_y_topes() {
+        // Contenido entra entero → thumb cubre todo, sin travel.
+        let (h, y, opp) = thumb_geometry(0.0, 200.0, 300.0);
+        assert_eq!((h, y, opp), (300.0, 0.0, 0.0));
+        // Contenido 3× viewport → thumb ≈ 1/3 (clampeado a MIN_THUMB).
+        let (h, y, _) = thumb_geometry(0.0, 900.0, 300.0);
+        assert!((h - 100.0).abs() < 0.01);
+        assert_eq!(y, 0.0);
+        // En el máximo offset, el thumb toca el fondo del track.
+        let max = max_offset(900.0, 300.0);
+        let (h2, y2, _) = thumb_geometry(max, 900.0, 300.0);
+        assert!((y2 + h2 - 300.0).abs() < 0.01);
+    }
+}
diff --git a/widgets/segmented/Cargo.toml b/widgets/segmented/Cargo.toml
new file mode 100644
index 0000000..a6b0efe
--- /dev/null
+++ b/widgets/segmented/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-segmented"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-segmented — control de opciones mutuamente exclusivas (radio horizontal). Para 2-5 opciones en línea."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/segmented/src/lib.rs b/widgets/segmented/src/lib.rs
new file mode 100644
index 0000000..ddbe843
--- /dev/null
+++ b/widgets/segmented/src/lib.rs
@@ -0,0 +1,143 @@
+//! `llimphi-widget-segmented` — control de opciones mutuamente exclusivas.
+//!
+//! N opciones horizontales con UNA activa. Patrón iOS/macOS para
+//! alternativas radio-style cuando son pocas (2-5) y caben en línea.
+//! Si son más, usar un `tabs` o un dropdown.
+//!
+//! Render-only: la app guarda `selected: usize` en el modelo y
+//! dispatcha `Msg::SelectSegment(usize)` al click.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_theme::{radius, Theme};
+
+/// Paleta del control.
+#[derive(Debug, Clone, Copy)]
+pub struct SegmentedPalette {
+    pub bg_track: Color,
+    pub bg_active: Color,
+    pub fg_active: Color,
+    pub fg_inactive: Color,
+    pub fg_hover: Color,
+}
+
+impl SegmentedPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            bg_track: t.bg_button,
+            bg_active: t.bg_panel,
+            fg_active: t.fg_text,
+            fg_inactive: t.fg_muted,
+            fg_hover: t.fg_text,
+        }
+    }
+}
+
+/// Construye el control. `labels` son los textos visibles; `selected`
+/// es el índice activo (0-based). `make_msg(i)` se llama al click.
+pub fn segmented_view<Msg, F>(
+    labels: &[&str],
+    selected: usize,
+    make_msg: F,
+    palette: &SegmentedPalette,
+) -> View<Msg>
+where
+    Msg: Clone + 'static,
+    F: Fn(usize) -> Msg,
+{
+    let children: Vec<View<Msg>> = labels
+        .iter()
+        .enumerate()
+        .map(|(i, label)| segment_view(i, label, i == selected, make_msg(i), palette))
+        .collect();
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(28.0_f32),
+        },
+        padding: Rect {
+            left: length(2.0_f32),
+            right: length(2.0_f32),
+            top: length(2.0_f32),
+            bottom: length(2.0_f32),
+        },
+        gap: Size {
+            width: length(2.0_f32),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.bg_track)
+    .radius(radius::SM)
+    .children(children)
+}
+
+fn segment_view<Msg: Clone + 'static>(
+    _idx: usize,
+    label: &str,
+    is_active: bool,
+    msg: Msg,
+    palette: &SegmentedPalette,
+) -> View<Msg> {
+    let (bg, fg) = if is_active {
+        (Some(palette.bg_active), palette.fg_active)
+    } else {
+        (None, palette.fg_inactive)
+    };
+
+    let seg_radius = radius::XS;
+    let mut node = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        flex_grow: 1.0,
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .radius(seg_radius)
+    .text_aligned(label.to_string(), 11.5, fg, Alignment::Center)
+    .on_click(msg);
+
+    if let Some(c) = bg {
+        node = node.fill(c).paint_with(move |scene, _ts, rect| {
+            // Gloss superior sólo en el segmento activo — refuerza
+            // "esto está seleccionado" con la misma firma de button (P6).
+            // Los segmentos inactivos quedan planos para que el contraste
+            // sea inequívoco.
+            use llimphi_ui::llimphi_raster::kurbo::{Affine, Point, RoundedRect};
+            use llimphi_ui::llimphi_raster::peniko::{Fill, Gradient};
+            if rect.w <= 0.0 || rect.h <= 0.0 {
+                return;
+            }
+            let x0 = rect.x as f64;
+            let y0 = rect.y as f64;
+            let x1 = (rect.x + rect.w) as f64;
+            let y1 = (rect.y + rect.h) as f64;
+            let y_mid = y0 + (y1 - y0) * 0.5;
+            let rr = RoundedRect::new(x0, y0, x1, y1, seg_radius);
+            let top = Color::from_rgba8(255, 255, 255, 28);
+            let bot = Color::from_rgba8(255, 255, 255, 0);
+            let g = Gradient::new_linear(Point::new(x0, y0), Point::new(x0, y_mid))
+                .with_stops([top, bot].as_slice());
+            scene.fill(Fill::NonZero, Affine::IDENTITY, &g, None, &rr);
+        });
+    }
+    node
+}
diff --git a/widgets/shortcuts-help/Cargo.toml b/widgets/shortcuts-help/Cargo.toml
new file mode 100644
index 0000000..fe41b1f
--- /dev/null
+++ b/widgets/shortcuts-help/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-widget-shortcuts-help"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-shortcuts-help — overlay '?' que muestra los atajos de teclado del contexto actual, agrupados por categoría."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-panel = { workspace = true }
diff --git a/widgets/shortcuts-help/src/lib.rs b/widgets/shortcuts-help/src/lib.rs
new file mode 100644
index 0000000..6471f03
--- /dev/null
+++ b/widgets/shortcuts-help/src/lib.rs
@@ -0,0 +1,282 @@
+//! `llimphi-widget-shortcuts-help` — overlay de atajos de teclado.
+//!
+//! Convención "press ? for help": cuando el usuario aprieta `?`,
+//! aparece un panel centrado con todos los atajos del contexto actual
+//! agrupados por categoría. Cualquier tecla cierra (la app maneja eso).
+//!
+//! La app construye un `ShortcutsHelpSpec` con grupos y entries, lo
+//! guarda en su modelo cuando se abre, y lo devuelve desde
+//! `view_overlay`.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, percent, FlexDirection, Position, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_theme::{alpha, radius, Theme};
+use llimphi_widget_panel::{panel_signature_painter, PanelStyle};
+
+/// Paleta del overlay.
+#[derive(Debug, Clone, Copy)]
+pub struct ShortcutsHelpPalette {
+    pub scrim: Color,
+    /// Firma del panel (gradient + hairline accent en top edge).
+    pub panel: PanelStyle,
+    pub border: Color,
+    pub fg_title: Color,
+    pub fg_group: Color,
+    pub fg_desc: Color,
+    pub fg_key: Color,
+    pub bg_key: Color,
+}
+
+impl ShortcutsHelpPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            scrim: Color::from_rgba8(0, 0, 0, alpha::SCRIM),
+            panel: PanelStyle::from_theme_large(t),
+            border: t.border,
+            fg_title: t.fg_text,
+            fg_group: t.accent,
+            fg_desc: t.fg_text,
+            fg_key: t.fg_text,
+            bg_key: t.bg_button,
+        }
+    }
+}
+
+/// Una entrada de atajo: combinación de teclas + descripción de qué hace.
+#[derive(Debug, Clone)]
+pub struct ShortcutEntry {
+    /// La combinación tal como aparece (ej. `"Ctrl+S"`, `"⌘K ⌘P"`, `"?"`).
+    pub keys: String,
+    pub description: String,
+}
+
+impl ShortcutEntry {
+    pub fn new(keys: impl Into<String>, description: impl Into<String>) -> Self {
+        Self { keys: keys.into(), description: description.into() }
+    }
+}
+
+/// Grupo de atajos con un título (ej. "Edición", "Navegación").
+#[derive(Debug, Clone)]
+pub struct ShortcutGroup {
+    pub title: String,
+    pub entries: Vec<ShortcutEntry>,
+}
+
+impl ShortcutGroup {
+    pub fn new(title: impl Into<String>, entries: Vec<ShortcutEntry>) -> Self {
+        Self { title: title.into(), entries }
+    }
+}
+
+/// Spec completo del overlay.
+pub struct ShortcutsHelpSpec<Msg: Clone + 'static> {
+    pub title: String,
+    pub groups: Vec<ShortcutGroup>,
+    pub viewport: (f32, f32),
+    pub on_dismiss: Msg,
+    pub palette: ShortcutsHelpPalette,
+}
+
+const PANEL_W: f32 = 480.0;
+const TITLE_FONT: f32 = 16.0;
+const GROUP_FONT: f32 = 11.5;
+const ENTRY_FONT: f32 = 12.0;
+const ENTRY_H: f32 = 22.0;
+const GROUP_H: f32 = 24.0;
+const TITLE_H: f32 = 40.0;
+const PAD: f32 = 20.0;
+
+pub fn shortcuts_help_view<Msg: Clone + 'static>(spec: ShortcutsHelpSpec<Msg>) -> View<Msg> {
+    let ShortcutsHelpSpec { title, groups, viewport, on_dismiss, palette } = spec;
+
+    // Altura del panel — suma de header + grupos.
+    let body_h: f32 = groups
+        .iter()
+        .map(|g| GROUP_H + g.entries.len() as f32 * ENTRY_H + 8.0)
+        .sum();
+    let panel_h = (TITLE_H + body_h + PAD * 2.0).min(viewport.1 - 32.0);
+    let panel_w = PANEL_W.min(viewport.0 - 32.0);
+    let x = ((viewport.0 - panel_w) * 0.5).max(0.0);
+    let y = ((viewport.1 - panel_h) * 0.5).max(0.0);
+
+    let header = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(TITLE_H),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .text_aligned(title, TITLE_FONT, palette.fg_title, Alignment::Start);
+
+    let mut body_children: Vec<View<Msg>> = Vec::with_capacity(groups.len() * 6);
+    for group in &groups {
+        body_children.push(group_header_view(&group.title, &palette));
+        for entry in &group.entries {
+            body_children.push(entry_view(entry, &palette));
+        }
+    }
+    let body = View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: auto(),
+        },
+        flex_grow: 1.0,
+        ..Default::default()
+    })
+    .children(body_children);
+
+    let panel = View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(x),
+            top: length(y),
+            right: auto(),
+            bottom: auto(),
+        },
+        size: Size {
+            width: length(panel_w),
+            height: length(panel_h),
+        },
+        flex_direction: FlexDirection::Column,
+        padding: Rect {
+            left: length(PAD),
+            right: length(PAD),
+            top: length(PAD),
+            bottom: length(PAD),
+        },
+        ..Default::default()
+    })
+    .paint_with(panel_signature_painter(palette.panel))
+    .radius(palette.panel.radius)
+    .clip(true)
+    .children(vec![header, body]);
+
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.scrim)
+    .on_click(on_dismiss)
+    .children(vec![panel])
+}
+
+fn group_header_view<Msg: Clone + 'static>(
+    title: &str,
+    palette: &ShortcutsHelpPalette,
+) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(GROUP_H),
+        },
+        padding: Rect {
+            left: length(0.0_f32),
+            right: length(0.0_f32),
+            top: length(8.0_f32),
+            bottom: length(2.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .text_aligned(
+        title.to_uppercase(),
+        GROUP_FONT,
+        palette.fg_group,
+        Alignment::Start,
+    )
+}
+
+fn entry_view<Msg: Clone + 'static>(
+    entry: &ShortcutEntry,
+    palette: &ShortcutsHelpPalette,
+) -> View<Msg> {
+    let desc = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        flex_grow: 1.0,
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .text_aligned(
+        entry.description.clone(),
+        ENTRY_FONT,
+        palette.fg_desc,
+        Alignment::Start,
+    );
+
+    let key_radius = radius::XS;
+    let keys = View::new(Style {
+        size: Size {
+            width: length(140.0_f32),
+            height: length(ENTRY_H - 6.0),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::FlexEnd),
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.bg_key)
+    .radius(key_radius)
+    .paint_with(move |scene, _ts, rect| {
+        // Gloss superior — el chip de teclado se lee como tecla con
+        // luz cayendo desde el top, no como rect plano. Mismo patrón
+        // que button (P6) — todo chip clicable o tipo-tecla comparte
+        // la firma.
+        use llimphi_ui::llimphi_raster::kurbo::{Affine, Point, RoundedRect};
+        use llimphi_ui::llimphi_raster::peniko::{Fill, Gradient};
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+        let x0 = rect.x as f64;
+        let y0 = rect.y as f64;
+        let x1 = (rect.x + rect.w) as f64;
+        let y1 = (rect.y + rect.h) as f64;
+        let y_mid = y0 + (y1 - y0) * 0.5;
+        let rr = RoundedRect::new(x0, y0, x1, y1, key_radius);
+        let top = Color::from_rgba8(255, 255, 255, 28);
+        let bot = Color::from_rgba8(255, 255, 255, 0);
+        let g = Gradient::new_linear(Point::new(x0, y0), Point::new(x0, y_mid))
+            .with_stops([top, bot].as_slice());
+        scene.fill(Fill::NonZero, Affine::IDENTITY, &g, None, &rr);
+    })
+    .text_aligned(entry.keys.clone(), ENTRY_FONT - 1.0, palette.fg_key, Alignment::End);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(ENTRY_H),
+        },
+        align_items: Some(AlignItems::Center),
+        gap: Size {
+            width: length(10.0_f32),
+            height: length(0.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(vec![desc, keys])
+}
diff --git a/widgets/skeleton/Cargo.toml b/widgets/skeleton/Cargo.toml
new file mode 100644
index 0000000..95a562b
--- /dev/null
+++ b/widgets/skeleton/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-skeleton"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-skeleton — bloque animado con shimmer para placeholders de contenido en carga. Alternativa a spinner cuando se conoce la forma del contenido (lista de N items, card con título+texto+imagen)."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/skeleton/src/lib.rs b/widgets/skeleton/src/lib.rs
new file mode 100644
index 0000000..1e39743
--- /dev/null
+++ b/widgets/skeleton/src/lib.rs
@@ -0,0 +1,145 @@
+//! `llimphi-widget-skeleton` — placeholder de carga con shimmer.
+//!
+//! Cuando una pantalla está cargando contenido cuya forma es predecible
+//! (ej. una lista de 5 cards, un avatar+nombre+timestamp), un skeleton
+//! es más informativo que un spinner: el usuario ya ve QUÉ vendrá,
+//! sólo no tiene los valores reales todavía.
+//!
+//! El brillo (shimmer) viene de una **banda de gradiente que cruza** el
+//! rect de izquierda a derecha cíclicamente. Los stops son
+//! `[low, high, low]` sobre una franja del ~50% del ancho, con `Extend::Pad`
+//! por default — fuera de la banda el rect queda en `low`, dentro el
+//! `high` pinta el destello. Es el patrón canónico de Material/Apple/
+//! sistemas modernos, más legible que la oscilación uniforme previa.
+//!
+//! Como `spinner`, requiere que la app fuerce redraws periódicos para
+//! que la animación corra (típico: `Handle::spawn_periodic(50ms, …)`
+//! mientras hay skeletons visibles).
+
+#![forbid(unsafe_code)]
+
+use std::time::Instant;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Size, Style},
+    Position,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::View;
+use llimphi_theme::{radius, Theme};
+
+/// Paleta del skeleton — dos tonos entre los que oscila.
+#[derive(Debug, Clone, Copy)]
+pub struct SkeletonPalette {
+    pub low: Color,
+    pub high: Color,
+}
+
+impl SkeletonPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            low: t.bg_panel_alt,
+            high: t.bg_button_hover,
+        }
+    }
+}
+
+/// Período del shimmer en segundos — un ciclo completo de la banda
+/// cruzando el rect. 1.4s es el sweet spot: rápido para señalar
+/// "esto se está cargando", lento para no marear.
+const SHIMMER_CYCLE_SECS: f32 = 1.4;
+/// Ancho de la banda como fracción del ancho del rect. 50% da una
+/// transición suave; bajar a 30% da un destello más puntual.
+const SHIMMER_BAND_FRAC: f64 = 0.5;
+/// Ancho mínimo absoluto de la banda — evita que en skeletons cortos
+/// (avatares chicos, line skeletons de ~80px) el destello sea un
+/// pixel apretado.
+const SHIMMER_BAND_MIN_PX: f64 = 40.0;
+
+/// Bloque rectangular animado. La altura y forma viene del `Style`
+/// que pasa el caller — el skeleton sólo aporta el `fill` animado.
+///
+/// Devuelve un `View` con `paint_with` que pinta una banda de
+/// gradiente atravesando el rect. Para usarlo dentro de un layout
+/// con tamaño definido, envolvelo en un contenedor con el `Style`
+/// adecuado.
+pub fn skeleton_view<Msg: Clone + 'static>(palette: &SkeletonPalette) -> View<Msg> {
+    let started = Instant::now();
+    let p = *palette;
+    View::new(Style {
+        position: Position::Absolute,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .paint_with(move |scene, _ts, rect| {
+        use llimphi_ui::llimphi_raster::kurbo::{Affine, Point, RoundedRect};
+        use llimphi_ui::llimphi_raster::peniko::{Fill, Gradient};
+
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+
+        // Progress del ciclo en [0, 1).
+        let elapsed = started.elapsed().as_secs_f32();
+        let progress = (elapsed / SHIMMER_CYCLE_SECS).fract() as f64;
+
+        // Banda: ancho relativo al rect (con floor mínimo) que arranca
+        // a la izquierda del rect y termina a la derecha. Distancia
+        // total recorrida = rect.w + band_w, así el destello entra y
+        // sale por completo.
+        let rect_w = rect.w as f64;
+        let band_w = (rect_w * SHIMMER_BAND_FRAC).max(SHIMMER_BAND_MIN_PX);
+        let travel = rect_w + band_w;
+        let band_left = rect.x as f64 - band_w + progress * travel;
+        let band_right = band_left + band_w;
+        let cy = (rect.y + rect.h * 0.5) as f64;
+
+        // Single fill: gradient lineal con stops [low, high, low]. Fuera
+        // de [band_left, band_right] el Extend::Pad (default de peniko)
+        // extiende los stops endpoint — ambos `low` — así el resto del
+        // rect queda en `low` sin necesidad de un fill base separado.
+        let rr = RoundedRect::new(
+            rect.x as f64,
+            rect.y as f64,
+            (rect.x + rect.w) as f64,
+            (rect.y + rect.h) as f64,
+            radius::SM,
+        );
+        let gradient = Gradient::new_linear(
+            Point::new(band_left, cy),
+            Point::new(band_right, cy),
+        )
+        .with_stops([p.low, p.high, p.low].as_slice());
+        scene.fill(Fill::NonZero, Affine::IDENTITY, &gradient, None, &rr);
+    })
+}
+
+/// Caja con tamaño explícito (ancho + alto en px) + skeleton adentro.
+/// Helper para casos comunes: line skeleton (`skeleton_line_view(160)`).
+pub fn skeleton_box_view<Msg: Clone + 'static>(
+    width_px: f32,
+    height_px: f32,
+    palette: &SkeletonPalette,
+) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: length(width_px),
+            height: length(height_px),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(vec![skeleton_view(palette)])
+}
+
+/// Línea horizontal típica para texto en carga (height fijo ~12px).
+pub fn skeleton_line_view<Msg: Clone + 'static>(
+    width_px: f32,
+    palette: &SkeletonPalette,
+) -> View<Msg> {
+    skeleton_box_view(width_px, 12.0, palette)
+}
+
diff --git a/widgets/slider/Cargo.toml b/widgets/slider/Cargo.toml
new file mode 100644
index 0000000..ba415b4
--- /dev/null
+++ b/widgets/slider/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "llimphi-widget-slider"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-slider — slider horizontal con etiqueta + track draggable + valor numérico. El track es un fillbar (sin pulgar): cambia el ancho relleno según la fracción `(value-min)/(max-min)`. El drag emite el delta de valor (no pixels) en cada `Move`, listo para reentrar al update."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+
+[[example]]
+name = "slider_demo"
+path = "examples/slider_demo.rs"
diff --git a/widgets/slider/LEEME.md b/widgets/slider/LEEME.md
new file mode 100644
index 0000000..a3ef331
--- /dev/null
+++ b/widgets/slider/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-slider
+
+> Slider con tick marks para [llimphi](../../README.md).
+
+Horizontal/vertical. Range custom, snap-to-ticks opcional, label de valor en vivo. Continuous y stepped variants.
diff --git a/widgets/slider/README.md b/widgets/slider/README.md
new file mode 100644
index 0000000..43a2bba
--- /dev/null
+++ b/widgets/slider/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-slider
+
+> Slider with tick marks for [llimphi](../../README.md).
+
+Horizontal/vertical. Custom range, optional snap-to-ticks, live value label. Continuous and stepped variants.
diff --git a/widgets/slider/examples/slider_demo.rs b/widgets/slider/examples/slider_demo.rs
new file mode 100644
index 0000000..fcd50d1
--- /dev/null
+++ b/widgets/slider/examples/slider_demo.rs
@@ -0,0 +1,130 @@
+//! Showcase de `llimphi-widget-slider`: tres sliders sobre un Model que
+//! acumula deltas en vivo. Corré con:
+//!
+//! ```text
+//! cargo run -p llimphi-widget-slider --example slider_demo
+//! ```
+
+use llimphi_theme::Theme;
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{App, DragPhase, Handle, View};
+use llimphi_widget_slider::{slider_view, SliderPalette};
+
+#[derive(Clone, Debug)]
+enum Msg {
+    EditPsique(f32),
+    EditMateria(f32),
+    EditPoder(f32),
+}
+
+struct Model {
+    psique: f32,
+    materia: f32,
+    poder: f32,
+}
+
+struct Demo;
+
+impl App for Demo {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · slider demo"
+    }
+
+    fn initial_size() -> (u32, u32) {
+        (520, 280)
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        Model { psique: 0.0, materia: 0.5, poder: -0.25 }
+    }
+
+    fn update(model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
+        let mut m = model;
+        match msg {
+            Msg::EditPsique(dv) => m.psique = (m.psique + dv).clamp(-1.0, 1.0),
+            Msg::EditMateria(dv) => m.materia = (m.materia + dv).clamp(-1.0, 1.0),
+            Msg::EditPoder(dv) => m.poder = (m.poder + dv).clamp(-1.0, 1.0),
+        }
+        m
+    }
+
+    fn view(model: &Model) -> View<Msg> {
+        let theme = Theme::dark();
+        let palette = SliderPalette::from_theme(&theme);
+
+        let header = View::new(Style {
+            size: Size { width: percent(1.0_f32), height: length(28.0_f32) },
+            ..Default::default()
+        })
+        .text_aligned(
+            "ajustá los sliders — el Model acumula deltas en vivo".to_string(),
+            13.0,
+            theme.fg_text,
+            Alignment::Start,
+        );
+
+        let psique = slider_view(
+            "psique",
+            model.psique,
+            -1.0,
+            1.0,
+            &palette,
+            |phase, dv| match phase {
+                DragPhase::Move => Some(Msg::EditPsique(dv)),
+                DragPhase::End => None,
+            },
+        );
+        let materia = slider_view(
+            "materia",
+            model.materia,
+            -1.0,
+            1.0,
+            &palette,
+            |phase, dv| match phase {
+                DragPhase::Move => Some(Msg::EditMateria(dv)),
+                DragPhase::End => None,
+            },
+        );
+        let poder = slider_view(
+            "poder",
+            model.poder,
+            -1.0,
+            1.0,
+            &palette,
+            |phase, dv| match phase {
+                DragPhase::Move => Some(Msg::EditPoder(dv)),
+                DragPhase::End => None,
+            },
+        );
+
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size { width: percent(1.0_f32), height: percent(1.0_f32) },
+            padding: Rect {
+                left: length(20.0_f32),
+                right: length(20.0_f32),
+                top: length(16.0_f32),
+                bottom: length(16.0_f32),
+            },
+            gap: Size {
+                width: length(0.0_f32),
+                height: length(8.0_f32),
+            },
+            align_items: Some(AlignItems::Stretch),
+            ..Default::default()
+        })
+        .fill(theme.bg_app)
+        .children(vec![header, psique, materia, poder])
+    }
+}
+
+fn main() {
+    llimphi_ui::run::<Demo>();
+}
diff --git a/widgets/slider/src/lib.rs b/widgets/slider/src/lib.rs
new file mode 100644
index 0000000..5fb6c4b
--- /dev/null
+++ b/widgets/slider/src/lib.rs
@@ -0,0 +1,254 @@
+//! `llimphi-widget-slider` — slider horizontal con label + track + valor.
+//!
+//! Pattern análogo a `llimphi-widget-splitter`: el widget no mantiene
+//! estado. El caller guarda el valor actual en su `Model` y le pasa un
+//! handler `Fn(DragPhase, f32) -> Option<Msg>` que recibe **el delta de
+//! valor** (no el delta de pixels) entre eventos consecutivos. El widget
+//! traduce internamente `dx_pixels` a `dv` usando `track_width`.
+//!
+//! Visualmente es un *fillbar*: el track entero es draggable y se rellena
+//! una fracción proporcional a `(value - min) / (max - min)`. No hay
+//! pulgar separado — el límite entre relleno y vacío es el indicador.
+//!
+//! Layout fila:
+//!
+//! ```text
+//!   [ label_width ]  [ ████░░░░░░ ]  [ value_width ]
+//!        "psique"      0.4 / 1.0           " 0.40"
+//! ```
+//!
+//! Uso típico (sliders sobre `LayerMods` de un Concepto):
+//!
+//! ```ignore
+//! slider_view(
+//!     "psique",
+//!     model.selected.mods.psique,
+//!     -1.0, 1.0,
+//!     &palette,
+//!     |phase, dv| match phase {
+//!         DragPhase::Move => Some(Msg::EditMod(Layer::Psique, dv)),
+//!         DragPhase::End => None,
+//!     },
+//! )
+//! ```
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{DragPhase, View};
+
+/// Paleta del slider. Las dimensiones también viajan acá porque definen
+/// el layout fila — el caller no toca el `Style` del slider directamente.
+#[derive(Debug, Clone, Copy)]
+pub struct SliderPalette {
+    pub track: Color,
+    pub track_filled: Color,
+    pub track_hover: Color,
+    pub fg_label: Color,
+    pub fg_value: Color,
+    pub radius: f64,
+    /// Alto total del widget en pixels.
+    pub row_height: f32,
+    /// Ancho fijo del bloque del label (a la izquierda).
+    pub label_width: f32,
+    /// Ancho fijo del bloque del valor numérico (a la derecha).
+    pub value_width: f32,
+    /// Ancho fijo del track draggable (al medio). Único valor que el
+    /// widget usa para convertir dx_pixels → dv_value.
+    pub track_width: f32,
+    /// Grosor (alto) del track en pixels.
+    pub track_thickness: f32,
+}
+
+impl Default for SliderPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl SliderPalette {
+    /// Construye la paleta desde un `Theme` semántico.
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            track: t.bg_button,
+            track_filled: t.accent,
+            track_hover: t.bg_button_hover,
+            fg_label: t.fg_muted,
+            fg_value: t.fg_text,
+            radius: 3.0,
+            row_height: 22.0,
+            label_width: 80.0,
+            value_width: 56.0,
+            track_width: 120.0,
+            track_thickness: 6.0,
+        }
+    }
+}
+
+/// Compone un slider horizontal: label + track-fillbar draggable + valor.
+///
+/// `value`, `min`, `max` son sólo para presentación visual y conversión
+/// `dx → dv`; el caller mantiene el estado y aplica el delta en su
+/// `update`. El handler recibe `(DragPhase, delta_value)`; devolver
+/// `None` deja el drag activo sin emitir Msg.
+pub fn slider_view<Msg, F>(
+    label: impl Into<String>,
+    value: f32,
+    min: f32,
+    max: f32,
+    palette: &SliderPalette,
+    on_change: F,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+    F: Fn(DragPhase, f32) -> Option<Msg> + Send + Sync + 'static,
+{
+    let range = (max - min).max(f32::EPSILON);
+    let ratio = ((value - min) / range).clamp(0.0, 1.0);
+    let track_width = palette.track_width.max(1.0);
+
+    // Drag: dx_pixels → dv_value. Escala FIJA (no depende del valor actual).
+    let span = max - min;
+    let handler = move |phase: DragPhase, dx: f32, _dy: f32| -> Option<Msg> {
+        let dv = dx * span / track_width;
+        on_change(phase, dv)
+    };
+
+    // Bloque del label.
+    let label_view = View::new(Style {
+        size: Size {
+            width: length(palette.label_width),
+            height: percent(1.0_f32),
+        },
+        flex_shrink: 0.0,
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .text_aligned(label.into(), 12.0, palette.fg_label, Alignment::Start);
+
+    // Track draggable: fill = track bg, hijo = porción rellena (accent).
+    let filled_radius = palette.radius;
+    let filled = View::new(Style {
+        size: Size {
+            width: percent(ratio),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.track_filled)
+    .radius(filled_radius)
+    .paint_with(move |scene, _ts, rect| {
+        // Gloss superior sobre la stripe accent — la barra se lee como
+        // luz que avanza, no como rect plano. Mismo patrón button/progress
+        // (P6/P7). Alpha bajo (40) porque el track es muy delgado (6px
+        // default) y un sheen fuerte le mete glitter.
+        use llimphi_ui::llimphi_raster::kurbo::{Affine, Point, RoundedRect};
+        use llimphi_ui::llimphi_raster::peniko::{Fill, Gradient};
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+        let x0 = rect.x as f64;
+        let y0 = rect.y as f64;
+        let x1 = (rect.x + rect.w) as f64;
+        let y1 = (rect.y + rect.h) as f64;
+        let y_mid = y0 + (y1 - y0) * 0.5;
+        let rr = RoundedRect::new(x0, y0, x1, y1, filled_radius);
+        let top = Color::from_rgba8(255, 255, 255, 40);
+        let bot = Color::from_rgba8(255, 255, 255, 0);
+        let g = Gradient::new_linear(Point::new(x0, y0), Point::new(x0, y_mid))
+            .with_stops([top, bot].as_slice());
+        scene.fill(Fill::NonZero, Affine::IDENTITY, &g, None, &rr);
+    });
+
+    let track = View::new(Style {
+        size: Size {
+            width: length(track_width),
+            height: length(palette.track_thickness),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.track)
+    .hover_fill(palette.track_hover)
+    .radius(palette.radius)
+    .draggable(handler)
+    .children(vec![filled]);
+
+    // Wrapper del track para centrarlo verticalmente sobre la fila.
+    let track_cell = View::new(Style {
+        size: Size {
+            width: length(track_width),
+            height: percent(1.0_f32),
+        },
+        flex_shrink: 0.0,
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        padding: Rect {
+            left: length(0.0_f32),
+            right: length(0.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![track]);
+
+    // Bloque del valor.
+    let value_text = format_value(value);
+    let value_view = View::new(Style {
+        size: Size {
+            width: length(palette.value_width),
+            height: percent(1.0_f32),
+        },
+        flex_shrink: 0.0,
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .text_aligned(value_text, 12.0, palette.fg_value, Alignment::End);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(palette.row_height),
+        },
+        align_items: Some(AlignItems::Center),
+        gap: Size {
+            width: length(8.0_f32),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![label_view, track_cell, value_view])
+}
+
+/// Formato uniforme para los valores: 2 decimales con signo explícito si
+/// la magnitud es chica, 1 decimal si es grande. Cabe en `value_width: 56`.
+fn format_value(v: f32) -> String {
+    let abs = v.abs();
+    if abs >= 1000.0 {
+        format!("{v:.0}")
+    } else if abs >= 10.0 {
+        format!("{v:.1}")
+    } else {
+        format!("{v:+.2}")
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn format_value_pretty_for_three_regimes() {
+        assert_eq!(format_value(0.34), "+0.34");
+        assert_eq!(format_value(-0.10), "-0.10");
+        assert_eq!(format_value(42.5), "42.5");
+        assert_eq!(format_value(1234.0), "1234");
+    }
+}
diff --git a/widgets/spinner/Cargo.toml b/widgets/spinner/Cargo.toml
new file mode 100644
index 0000000..21b90d2
--- /dev/null
+++ b/widgets/spinner/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-spinner"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-spinner — spinner circular animado por reloj absoluto (no requiere ticks del modelo). Stroke gradient circular. Default 24×24 pero escalable."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/spinner/src/lib.rs b/widgets/spinner/src/lib.rs
new file mode 100644
index 0000000..9d3c192
--- /dev/null
+++ b/widgets/spinner/src/lib.rs
@@ -0,0 +1,72 @@
+//! `llimphi-widget-spinner` — spinner circular animado por reloj absoluto.
+//!
+//! El paint usa `Instant::now()` para calcular el ángulo de rotación,
+//! así no hace falta que la app guarde un tween ni dispatchee ticks:
+//! cuando llimphi-ui rasterize un frame (porque algo cambió en el
+//! modelo o porque la app pidió un repaint), el spinner se ve girando.
+//!
+//! **Nota**: el spinner sólo se anima si HAY frames. Una app idle no
+//! repintará por sí sola — usar `Handle::spawn_periodic(50ms, …)`
+//! mientras el spinner esté visible para forzar redraw. O conectar
+//! el spinner a un `Tween` y leer su `progress()` desde la `view`.
+//!
+//! Diseño visual: arco de 270° con stroke variable (más grueso al
+//! frente del giro, más fino atrás) para dar sensación de aceleración.
+
+#![forbid(unsafe_code)]
+
+use std::time::Instant;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{percent, Size, Style},
+    Position,
+};
+use llimphi_ui::llimphi_raster::kurbo::{Affine, Arc, Cap, Stroke};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::View;
+
+/// Construye el `View` que pinta un spinner circular animado dentro
+/// del rect del padre.
+///
+/// - `color`: tinte del arco (típico: `theme.accent`).
+/// - `stroke_width_ratio`: grosor del arco como fracción del lado
+///   menor (0.10 = 10%). Default razonable es `0.12`.
+/// - `speed_rev_per_sec`: revoluciones por segundo. Default `1.0`.
+pub fn spinner_view<Msg: Clone + 'static>(
+    color: Color,
+    stroke_width_ratio: f32,
+    speed_rev_per_sec: f32,
+) -> View<Msg> {
+    // Anchor temporal: arrancamos el reloj al construir el View. Como
+    // la closure se evalúa por frame, cada repintado calcula `elapsed`
+    // contra este origen — sin tween, sin model state.
+    let started = Instant::now();
+    let sw = stroke_width_ratio;
+    let speed = speed_rev_per_sec;
+    View::new(Style {
+        position: Position::Absolute,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .paint_with(move |scene, _ts, rect| {
+        let side = rect.w.min(rect.h) as f64;
+        if side <= 0.0 {
+            return;
+        }
+        let cx = rect.x as f64 + rect.w as f64 * 0.5;
+        let cy = rect.y as f64 + rect.h as f64 * 0.5;
+        let stroke_w = (side * sw as f64).max(1.0);
+        let radius = (side - stroke_w) * 0.5;
+        let elapsed = started.elapsed().as_secs_f64();
+        // Ángulo de inicio del arco — gira completamente cada `1/speed` s.
+        let theta0 = elapsed * speed as f64 * std::f64::consts::TAU;
+        // Arco de 270° (= 3π/2 rad) — la "abertura" sugiere movimiento.
+        let sweep = std::f64::consts::PI * 1.5;
+        let arc = Arc::new((cx, cy), (radius, radius), theta0, sweep, 0.0);
+        let stroke = Stroke::new(stroke_w).with_caps(Cap::Round);
+        scene.stroke(&stroke, Affine::IDENTITY, color, None, &arc);
+    })
+}
diff --git a/widgets/splash/Cargo.toml b/widgets/splash/Cargo.toml
new file mode 100644
index 0000000..b0bf4b7
--- /dev/null
+++ b/widgets/splash/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-widget-splash"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-splash — splash de arranque gioser: cuatro cuadrantes (unanchay/yachay/ruway/ukupacha) animados con tween de entrada secuencial. Identidad visual del SO."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-motion = { workspace = true }
diff --git a/widgets/splash/src/lib.rs b/widgets/splash/src/lib.rs
new file mode 100644
index 0000000..c73c2b5
--- /dev/null
+++ b/widgets/splash/src/lib.rs
@@ -0,0 +1,283 @@
+//! `llimphi-widget-splash` — splash de arranque gioser.
+//!
+//! Identidad visual del SO al boot: cuatro cuadrantes ordenados como
+//! una cruz andina, cada uno con su nombre quechua y color simbólico,
+//! que **entran en secuencia** con un tween de fade+escala.
+//!
+//! Los cuadrantes (en orden de entrada):
+//! 1. `unanchay` — PERCIBIR  — cyan (índigo claro)
+//! 2. `yachay`   — CONOCER   — verde aurora
+//! 3. `ruway`    — HACER     — naranja sunset
+//! 4. `ukupacha` — RAÍZ      — púrpura profundo
+//!
+//! Cada cuadrante hace fade-in + slight scale-up, con un offset de
+//! `motion::NORMAL / 2` entre uno y el siguiente. La app pasa un
+//! `Instant` de inicio y el splash calcula las fases relativas — no
+//! requiere ningún tween del modelo.
+//!
+//! Cuando el splash termina (todos visibles), la app puede:
+//! - mantenerlo unos segundos más como pantalla de carga,
+//! - hacer un fade-out completo cuando el sistema esté listo,
+//! - o reemplazarlo por la UI principal.
+
+#![forbid(unsafe_code)]
+
+use std::time::Instant;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_motion::motion;
+
+/// Datos de un cuadrante: nombre quechua, glosa breve y color.
+#[derive(Debug, Clone, Copy)]
+pub struct Quadrant {
+    pub name: &'static str,
+    pub gloss: &'static str,
+    pub color: Color,
+}
+
+/// Los cuatro cuadrantes canónicos, en orden de entrada al splash.
+pub fn quadrants() -> [Quadrant; 4] {
+    [
+        Quadrant {
+            name: "unanchay",
+            gloss: "PERCIBIR",
+            color: Color::from_rgba8(110, 160, 230, 255),
+        },
+        Quadrant {
+            name: "yachay",
+            gloss: "CONOCER",
+            color: Color::from_rgba8(110, 220, 180, 255),
+        },
+        Quadrant {
+            name: "ruway",
+            gloss: "HACER",
+            color: Color::from_rgba8(232, 160, 90, 255),
+        },
+        Quadrant {
+            name: "ukupacha",
+            gloss: "RAÍZ",
+            color: Color::from_rgba8(160, 110, 220, 255),
+        },
+    ]
+}
+
+/// Construye el splash. `started_at` es el `Instant` de origen — el
+/// splash calcula las fases relativas. La app puede llamar `animate(handle,
+/// motion::SLOW * 3, …)` para forzar repaints durante la animación.
+///
+/// `bg`: color de fondo (típico: `theme.bg_app`).
+/// `fg_text`: color del título/glosa.
+pub fn splash_view<Msg: Clone + 'static>(
+    started_at: Instant,
+    bg: Color,
+    fg_text: Color,
+) -> View<Msg> {
+    let elapsed = started_at.elapsed().as_secs_f32();
+    let stagger = motion::NORMAL.as_secs_f32() * 0.45;
+    let per_quad = motion::NORMAL.as_secs_f32();
+    let quads = quadrants();
+
+    let cells: Vec<View<Msg>> = quads
+        .iter()
+        .enumerate()
+        .map(|(i, q)| {
+            let local_t = ((elapsed - i as f32 * stagger) / per_quad).clamp(0.0, 1.0);
+            let eased = motion::ease_out_cubic(local_t);
+            quadrant_cell(q, eased, fg_text)
+        })
+        .collect();
+
+    // 2×2 grid: row 0 = unanchay + yachay; row 1 = ruway + ukupacha.
+    let row = |a: View<Msg>, b: View<Msg>| -> View<Msg> {
+        View::new(Style {
+            flex_direction: FlexDirection::Row,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(0.5_f32),
+            },
+            gap: Size {
+                width: length(12.0_f32),
+                height: length(0.0_f32),
+            },
+            ..Default::default()
+        })
+        .children(vec![a, b])
+    };
+    let mut iter = cells.into_iter();
+    let r0 = row(iter.next().unwrap(), iter.next().unwrap());
+    let r1 = row(iter.next().unwrap(), iter.next().unwrap());
+
+    let grid = View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: length(420.0_f32),
+            height: length(280.0_f32),
+        },
+        gap: Size {
+            width: length(0.0_f32),
+            height: length(12.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(vec![r0, r1]);
+
+    // Título "gioser" debajo, también fade-in pero al final.
+    let title_t = ((elapsed - 4.0 * stagger) / per_quad).clamp(0.0, 1.0);
+    let title_alpha = motion::ease_out_cubic(title_t);
+    let title = View::new(Style {
+        size: Size {
+            width: length(420.0_f32),
+            height: length(32.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .text_aligned("gioser", 22.0, fg_text, Alignment::Center)
+    .alpha(title_alpha);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        gap: Size {
+            width: length(0.0_f32),
+            height: length(28.0_f32),
+        },
+        padding: Rect {
+            left: length(0.0_f32),
+            right: length(0.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(bg)
+    .children(vec![grid, title])
+}
+
+fn quadrant_cell<Msg: Clone + 'static>(
+    quad: &Quadrant,
+    progress: f32,
+    fg_text: Color,
+) -> View<Msg> {
+    // El cuadrante "entra" con fade y un leve drift desde abajo (10px).
+    // El drift lo representamos con un padding-top que tiende a cero;
+    // como llimphi no expone translate por nodo (sólo position absolute),
+    // metemos el contenido en un wrapper con padding decreciente.
+    let drift = (1.0 - progress) * 10.0;
+
+    let name = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(28.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .text_aligned(quad.name, 16.0, fg_text, Alignment::Center);
+
+    let gloss = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(16.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .text_aligned(quad.gloss, 10.0, quad.color, Alignment::Center);
+
+    let inner = View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        gap: Size {
+            width: length(0.0_f32),
+            height: length(6.0_f32),
+        },
+        padding: Rect {
+            left: length(0.0_f32),
+            right: length(0.0_f32),
+            top: length(drift),
+            bottom: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![name, gloss]);
+
+    // Fondo del cuadrante con gradient vertical en el color semántico:
+    // alpha 50 arriba → alpha 12 abajo. Da volumen al cuadrante (más
+    // intenso cerca del accent strip del top) y un efecto "halo descendente"
+    // que ayuda a leer la cruz andina como cuatro luces que emergen del
+    // centro. Antes: alpha 30 uniforme.
+    let border = with_alpha8(quad.color, 90);
+    let bg_top = with_alpha8(quad.color, 50);
+    let bg_bot = with_alpha8(quad.color, 12);
+
+    let cell_radius = llimphi_theme::radius::MD;
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        flex_grow: 1.0,
+        ..Default::default()
+    })
+    .paint_with(move |scene, _ts, rect| {
+        use llimphi_ui::llimphi_raster::kurbo::{Affine, Point, RoundedRect};
+        use llimphi_ui::llimphi_raster::peniko::{Fill, Gradient};
+
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+        let x0 = rect.x as f64;
+        let y0 = rect.y as f64;
+        let x1 = (rect.x + rect.w) as f64;
+        let y1 = (rect.y + rect.h) as f64;
+        let rr = RoundedRect::new(x0, y0, x1, y1, cell_radius);
+        let gradient = Gradient::new_linear(Point::new(x0, y0), Point::new(x0, y1))
+            .with_stops([bg_top, bg_bot].as_slice());
+        scene.fill(Fill::NonZero, Affine::IDENTITY, &gradient, None, &rr);
+    })
+    .radius(cell_radius)
+    .clip(true)
+    .alpha(progress)
+    .children(vec![
+        // Línea accent superior — 2px del color del cuadrante a alta
+        // intensidad, ancla del gradiente que cae.
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(2.0_f32),
+            },
+            flex_shrink: 0.0,
+            ..Default::default()
+        })
+        .fill(border),
+        inner,
+    ])
+}
+
+fn with_alpha8(c: Color, a: u8) -> Color {
+    let [r, g, b, _] = c.components;
+    use llimphi_ui::llimphi_raster::peniko::color::AlphaColor;
+    AlphaColor::new([r, g, b, a as f32 / 255.0])
+}
diff --git a/widgets/splitter/Cargo.toml b/widgets/splitter/Cargo.toml
new file mode 100644
index 0000000..af931f0
--- /dev/null
+++ b/widgets/splitter/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-splitter"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-splitter — split container con divisor draggable. Análogo Llimphi al `nahual-widget-splitter` GPUI: dos panes, divisor sólido del ancho del thickness configurable, drag emite Msg con el delta del eje principal."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/splitter/LEEME.md b/widgets/splitter/LEEME.md
new file mode 100644
index 0000000..bd99b68
--- /dev/null
+++ b/widgets/splitter/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-splitter
+
+> Splitter horizontal/vertical para [llimphi](../../README.md).
+
+Divide el espacio entre dos hijos con un handle arrastrable. Min/max sizes por hijo; doble-click para reset.
diff --git a/widgets/splitter/README.md b/widgets/splitter/README.md
new file mode 100644
index 0000000..8140406
--- /dev/null
+++ b/widgets/splitter/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-splitter
+
+> Horizontal/vertical splitter for [llimphi](../../README.md).
+
+Divides space between two children with a draggable handle. Per-child min/max sizes; double-click to reset.
diff --git a/widgets/splitter/examples/splitter_demo.rs b/widgets/splitter/examples/splitter_demo.rs
new file mode 100644
index 0000000..45e1133
--- /dev/null
+++ b/widgets/splitter/examples/splitter_demo.rs
@@ -0,0 +1,126 @@
+//! Showcase de `llimphi-widget-splitter`: dos splits anidados
+//! draggables (Row con Column adentro).
+//!
+//! Corré con: `cargo run -p llimphi-widget-splitter --example showcase --release`.
+//!
+//! Probá: agarrá el divisor vertical y arrastralo izquierda/derecha
+//! para resizar el pane izquierdo; agarrá el divisor horizontal de la
+//! derecha para resizar el pane superior derecho.
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{percent, Size, Style},
+    AlignItems, JustifyContent,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{App, DragPhase, Handle, View};
+use llimphi_widget_splitter::{splitter_two, Direction, PaneSize, SplitterPalette};
+
+#[derive(Clone)]
+enum Msg {
+    ResizeOuter(f32),
+    ResizeInner(f32),
+}
+
+struct Model {
+    left_w: f32,
+    top_h: f32,
+}
+
+struct Showcase;
+
+impl App for Showcase {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · splitter showcase"
+    }
+
+    fn initial_size() -> (u32, u32) {
+        (1100, 720)
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        Model {
+            left_w: 320.0,
+            top_h: 240.0,
+        }
+    }
+
+    fn update(model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
+        let mut m = model;
+        match msg {
+            Msg::ResizeOuter(dx) => {
+                m.left_w = (m.left_w + dx).clamp(120.0, 800.0);
+            }
+            Msg::ResizeInner(dy) => {
+                m.top_h = (m.top_h + dy).clamp(80.0, 600.0);
+            }
+        }
+        m
+    }
+
+    fn view(model: &Model) -> View<Msg> {
+        let palette = SplitterPalette::default();
+
+        let left = pane("izquierdo", Color::from_rgba8(28, 36, 50, 255));
+        let top_right = pane(
+            &format!("arriba · {:.0} px", model.top_h),
+            Color::from_rgba8(38, 50, 70, 255),
+        );
+        let bottom_right = pane(
+            "abajo · flex",
+            Color::from_rgba8(48, 36, 60, 255),
+        );
+
+        let right = splitter_two(
+            Direction::Column,
+            top_right,
+            PaneSize::Fixed(model.top_h),
+            bottom_right,
+            PaneSize::Flex,
+            |phase, dy| match phase {
+                DragPhase::Move => Some(Msg::ResizeInner(dy)),
+                DragPhase::End => None,
+            },
+            &palette,
+        );
+
+        splitter_two(
+            Direction::Row,
+            left,
+            PaneSize::Fixed(model.left_w),
+            right,
+            PaneSize::Flex,
+            |phase, dx| match phase {
+                DragPhase::Move => Some(Msg::ResizeOuter(dx)),
+                DragPhase::End => None,
+            },
+            &palette,
+        )
+    }
+}
+
+fn pane(label: &str, bg: Color) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        ..Default::default()
+    })
+    .fill(bg)
+    .text_aligned(
+        label.to_string(),
+        18.0,
+        Color::from_rgba8(220, 230, 240, 255),
+        Alignment::Center,
+    )
+}
+
+fn main() {
+    llimphi_ui::run::<Showcase>();
+}
diff --git a/widgets/splitter/src/lib.rs b/widgets/splitter/src/lib.rs
new file mode 100644
index 0000000..ee73a92
--- /dev/null
+++ b/widgets/splitter/src/lib.rs
@@ -0,0 +1,174 @@
+//! `llimphi-widget-splitter` — split container con divisor draggable.
+//!
+//! Análogo Llimphi al `nahual-widget-splitter` GPUI: dos panes con un
+//! divisor entre medio que el usuario arrastra para reasignar el tamaño.
+//! El widget no mantiene estado: el caller acumula el tamaño de un pane
+//! en su `Model` y le pasa el valor actual + un handler `Fn(DragPhase,
+//! f32) -> Option<Msg>` que materializa el delta en un Msg de update.
+//!
+//! Uso típico (dos panes, izquierdo fijo y derecho flex):
+//!
+//! ```ignore
+//! splitter_two(
+//!     Direction::Row,
+//!     left_view,
+//!     PaneSize::Fixed(model.left_size),
+//!     right_view,
+//!     PaneSize::Flex,
+//!     |phase, dx| match phase {
+//!         DragPhase::Move => Some(Msg::ResizeLeft(dx)),
+//!         DragPhase::End => Some(Msg::PersistLayout),
+//!     },
+//!     &SplitterPalette::default(),
+//! )
+//! ```
+
+#![forbid(unsafe_code)]
+
+use std::sync::Arc;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Dimension, FlexDirection, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::{DragPhase, View};
+
+/// Dirección del split. `Row` apila los panes horizontalmente
+/// (divisor vertical, drag horizontal); `Column` los apila verticalmente.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Direction {
+    Row,
+    Column,
+}
+
+/// Tamaño de un pane sobre el eje principal del split.
+#[derive(Debug, Clone, Copy)]
+pub enum PaneSize {
+    /// Ancho/alto fijo en pixels. El otro pane se ajusta con `flex_grow`.
+    Fixed(f32),
+    /// Toma todo el espacio sobrante (`flex_grow = 1`).
+    Flex,
+}
+
+/// Paleta del divisor. Cambia de color al hover para señalar
+/// "agarrame y arrastrá".
+#[derive(Debug, Clone, Copy)]
+pub struct SplitterPalette {
+    pub divider: Color,
+    pub divider_hover: Color,
+    pub thickness: f32,
+}
+
+impl Default for SplitterPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl SplitterPalette {
+    /// Construye la paleta desde un `Theme` semántico.
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            divider: t.border,
+            divider_hover: t.accent,
+            thickness: 6.0,
+        }
+    }
+}
+
+/// Split de dos panes con divisor draggable entre medio. `on_resize`
+/// se invoca con el delta del eje principal (positivo → divisor se
+/// mueve a la derecha/abajo).
+pub fn splitter_two<Msg, F>(
+    direction: Direction,
+    a: View<Msg>,
+    a_size: PaneSize,
+    b: View<Msg>,
+    b_size: PaneSize,
+    on_resize: F,
+    palette: &SplitterPalette,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+    F: Fn(DragPhase, f32) -> Option<Msg> + Send + Sync + 'static,
+{
+    let flex_dir = match direction {
+        Direction::Row => FlexDirection::Row,
+        Direction::Column => FlexDirection::Column,
+    };
+
+    // El divisor sólo necesita Msg en el eje principal — escondemos el
+    // otro detrás del closure.
+    let on_resize = Arc::new(on_resize);
+    let cb_dir = direction;
+    let cb = on_resize.clone();
+    let divider = divider_view::<Msg>(direction, palette, move |phase, dx, dy| {
+        let main = match cb_dir {
+            Direction::Row => dx,
+            Direction::Column => dy,
+        };
+        (cb)(phase, main)
+    });
+
+    let pane_a = wrap_pane(a, direction, a_size);
+    let pane_b = wrap_pane(b, direction, b_size);
+
+    View::new(Style {
+        flex_direction: flex_dir,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![pane_a, divider, pane_b])
+}
+
+fn wrap_pane<Msg>(view: View<Msg>, direction: Direction, size: PaneSize) -> View<Msg> {
+    let (width, height, flex_grow) = match (direction, size) {
+        (Direction::Row, PaneSize::Fixed(px)) => (length(px), percent(1.0_f32), 0.0),
+        (Direction::Row, PaneSize::Flex) => (Dimension::auto(), percent(1.0_f32), 1.0),
+        (Direction::Column, PaneSize::Fixed(px)) => (percent(1.0_f32), length(px), 0.0),
+        (Direction::Column, PaneSize::Flex) => (percent(1.0_f32), Dimension::auto(), 1.0),
+    };
+    View::new(Style {
+        size: Size { width, height },
+        flex_grow,
+        flex_shrink: 0.0,
+        min_size: Size {
+            width: length(0.0_f32),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![view])
+}
+
+fn divider_view<Msg>(
+    direction: Direction,
+    palette: &SplitterPalette,
+    handler: impl Fn(DragPhase, f32, f32) -> Option<Msg> + Send + Sync + 'static,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+{
+    let (width, height) = match direction {
+        Direction::Row => (length(palette.thickness), percent(1.0_f32)),
+        Direction::Column => (percent(1.0_f32), length(palette.thickness)),
+    };
+    View::new(Style {
+        size: Size { width, height },
+        flex_shrink: 0.0,
+        padding: Rect {
+            left: length(0.0_f32),
+            right: length(0.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.divider)
+    .hover_fill(palette.divider_hover)
+    .draggable(handler)
+}
diff --git a/widgets/stat-card/Cargo.toml b/widgets/stat-card/Cargo.toml
new file mode 100644
index 0000000..f63af4c
--- /dev/null
+++ b/widgets/stat-card/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-widget-stat-card"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-stat-card — tarjeta de dashboard con label chico + valor grande + descripción + accent vertical. Análogo Llimphi al `nahual-widget-stat-card` GPUI."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-card = { workspace = true }
diff --git a/widgets/stat-card/LEEME.md b/widgets/stat-card/LEEME.md
new file mode 100644
index 0000000..4fa05fd
--- /dev/null
+++ b/widgets/stat-card/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-stat-card
+
+> Card para métricas para [llimphi](../../README.md).
+
+Label + valor grande + sub-label + sparkline opcional. Variante `compact` y `wide`. Usado por `cosmos-card`, `chasqui-card`, `arje-card`, etc.
diff --git a/widgets/stat-card/README.md b/widgets/stat-card/README.md
new file mode 100644
index 0000000..92be197
--- /dev/null
+++ b/widgets/stat-card/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-stat-card
+
+> Card for metrics for [llimphi](../../README.md).
+
+Label + large value + sub-label + optional sparkline. `compact` and `wide` variants. Used by `cosmos-card`, `chasqui-card`, `arje-card`, etc.
diff --git a/widgets/stat-card/src/lib.rs b/widgets/stat-card/src/lib.rs
new file mode 100644
index 0000000..557667e
--- /dev/null
+++ b/widgets/stat-card/src/lib.rs
@@ -0,0 +1,144 @@
+//! `llimphi-widget-stat-card` — tarjeta de dashboard con accent.
+//!
+//! Compone (sobre `llimphi-widget-card`):
+//! - **Border-l-4** con un color de accent que el caller decide.
+//! - **Label** chico arriba en el color del accent.
+//! - **Value** grande (28 px) en el color principal del texto.
+//! - **Description** chica en el color tenue.
+//! - **Listing opcional** de items recientes con sub-header
+//!   `"recent (N):"`.
+//!
+//! Análogo Llimphi al `nahual-widget-stat-card` GPUI. Pensado para
+//! dashboards estilo `minga-explorer`, `brahman-broker-explorer`.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_widget_card::{card_view, CardOptions, CardPalette};
+
+/// Paleta del stat-card. `accent` se setea por instancia (verde/rojo/
+/// ámbar etc.), los otros vienen del theme.
+#[derive(Debug, Clone, Copy)]
+pub struct StatCardPalette {
+    pub bg: Color,
+    pub fg_text: Color,
+    pub fg_muted: Color,
+}
+
+impl Default for StatCardPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl StatCardPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg: t.bg_panel,
+            fg_text: t.fg_text,
+            fg_muted: t.fg_muted,
+        }
+    }
+}
+
+/// Compone un stat-card.
+///
+/// - `label`: header chico en color `accent`.
+/// - `value`: texto principal grande.
+/// - `description`: línea chica tenue debajo del value.
+/// - `accent`: color del border-l + del label.
+/// - `recent_items`: si no vacío, agrega "recent (N):" + una fila por
+///   item.
+pub fn stat_card_view<Msg: Clone + 'static>(
+    label: &str,
+    value: impl Into<String>,
+    description: &str,
+    accent: Color,
+    recent_items: &[String],
+    palette: &StatCardPalette,
+) -> View<Msg> {
+    let label_row = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(14.0_f32),
+        },
+        ..Default::default()
+    })
+    .text_aligned(label.to_string(), 11.0, accent, Alignment::Start);
+
+    let value_row = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(36.0_f32),
+        },
+        ..Default::default()
+    })
+    .text_aligned(value.into(), 28.0, palette.fg_text, Alignment::Start);
+
+    let desc_row = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(14.0_f32),
+        },
+        ..Default::default()
+    })
+    .text_aligned(
+        description.to_string(),
+        11.0,
+        palette.fg_muted,
+        Alignment::Start,
+    );
+
+    let mut children: Vec<View<Msg>> = vec![label_row, value_row, desc_row];
+
+    if !recent_items.is_empty() {
+        children.push(
+            View::new(Style {
+                size: Size {
+                    width: percent(1.0_f32),
+                    height: length(16.0_f32),
+                },
+                padding: Rect {
+                    left: length(0.0_f32),
+                    right: length(0.0_f32),
+                    top: length(6.0_f32),
+                    bottom: length(0.0_f32),
+                },
+                ..Default::default()
+            })
+            .text_aligned(
+                format!("recent ({}):", recent_items.len()),
+                10.0,
+                palette.fg_muted,
+                Alignment::Start,
+            ),
+        );
+        for it in recent_items {
+            children.push(
+                View::new(Style {
+                    size: Size {
+                        width: percent(1.0_f32),
+                        height: length(14.0_f32),
+                    },
+                    ..Default::default()
+                })
+                .text_aligned(it.clone(), 11.0, palette.fg_text, Alignment::Start),
+            );
+        }
+    }
+
+    card_view(
+        children,
+        CardOptions {
+            accent: Some(accent),
+            ..Default::default()
+        },
+        &CardPalette { bg: palette.bg },
+    )
+}
diff --git a/widgets/status-bar/Cargo.toml b/widgets/status-bar/Cargo.toml
new file mode 100644
index 0000000..bcfcee2
--- /dev/null
+++ b/widgets/status-bar/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "llimphi-widget-status-bar"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-status-bar — barra inferior con segmentos left/center/right configurables. Cada segmento puede llevar icono opcional y handler de click."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-icons = { workspace = true }
+llimphi-widget-panel = { workspace = true }
diff --git a/widgets/status-bar/src/lib.rs b/widgets/status-bar/src/lib.rs
new file mode 100644
index 0000000..5e9bc53
--- /dev/null
+++ b/widgets/status-bar/src/lib.rs
@@ -0,0 +1,242 @@
+//! `llimphi-widget-status-bar` — barra de estado inferior.
+//!
+//! Patrón clásico de IDEs/editores: barra delgada en el borde inferior
+//! de la ventana con tres regiones (left/center/right). Cada región
+//! tiene N segmentos, cada uno puede llevar icono + texto + handler de
+//! click opcional.
+//!
+//! Útil para mostrar: rama git activa, posición del cursor, tipo de
+//! archivo, modo (insert/normal), notificaciones pendientes, etc.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_icons::{icon_view, Icon};
+use llimphi_theme::Theme;
+use llimphi_widget_panel::{panel_signature_painter, PanelStyle};
+
+/// Paleta de la barra de estado.
+#[derive(Debug, Clone, Copy)]
+pub struct StatusBarPalette {
+    pub bg: Color,
+    pub fg: Color,
+    pub fg_muted: Color,
+    pub bg_hover: Color,
+    pub border: Color,
+    /// Firma visual de la barra: gradient sutil + hairline accent en su
+    /// top edge — el hairline funciona como "techo" que separa la barra
+    /// de la zona de contenido. `None` cae al fill plano + border top
+    /// del modo previo (back-compat).
+    pub signature: Option<PanelStyle>,
+}
+
+impl StatusBarPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            bg: t.bg_panel_alt,
+            fg: t.fg_text,
+            fg_muted: t.fg_muted,
+            bg_hover: t.bg_row_hover,
+            border: t.border,
+            signature: Some(PanelStyle {
+                radius: 0.0,
+                bg_base: t.bg_panel_alt,
+                ..PanelStyle::from_theme(t)
+            }),
+        }
+    }
+}
+
+/// Un segmento de la barra. `icon` y `on_click` son opcionales.
+#[derive(Clone)]
+pub struct StatusSegment<Msg> {
+    pub text: String,
+    pub icon: Option<Icon>,
+    pub on_click: Option<Msg>,
+    /// Si `true`, usa `fg` en vez de `fg_muted` — útil para destacar
+    /// estados importantes (ej. "modificado").
+    pub emphasized: bool,
+}
+
+impl<Msg> StatusSegment<Msg> {
+    pub fn text(text: impl Into<String>) -> Self {
+        Self {
+            text: text.into(),
+            icon: None,
+            on_click: None,
+            emphasized: false,
+        }
+    }
+    pub fn with_icon(mut self, icon: Icon) -> Self {
+        self.icon = Some(icon);
+        self
+    }
+    pub fn clickable(mut self, msg: Msg) -> Self {
+        self.on_click = Some(msg);
+        self
+    }
+    pub fn emphasized(mut self) -> Self {
+        self.emphasized = true;
+        self
+    }
+}
+
+const BAR_H: f32 = 22.0;
+const SEG_GAP: f32 = 14.0;
+const FONT_SIZE: f32 = 11.0;
+const ICON_SIZE: f32 = 12.0;
+
+pub fn status_bar_view<Msg: Clone + 'static>(
+    left: Vec<StatusSegment<Msg>>,
+    center: Vec<StatusSegment<Msg>>,
+    right: Vec<StatusSegment<Msg>>,
+    palette: &StatusBarPalette,
+) -> View<Msg> {
+    let make_region = |segs: Vec<StatusSegment<Msg>>, justify: JustifyContent| -> View<Msg> {
+        let children: Vec<View<Msg>> = segs
+            .into_iter()
+            .map(|s| segment_view(s, palette))
+            .collect();
+        View::new(Style {
+            flex_direction: FlexDirection::Row,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            flex_grow: 1.0,
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(justify),
+            gap: Size {
+                width: length(SEG_GAP),
+                height: length(0.0_f32),
+            },
+            ..Default::default()
+        })
+        .children(children)
+    };
+
+    let left_region = make_region(left, JustifyContent::FlexStart);
+    let center_region = make_region(center, JustifyContent::Center);
+    let right_region = make_region(right, JustifyContent::FlexEnd);
+
+    // Modo con firma: la barra trae su propio hairline accent en el top
+    // edge — reemplaza el border plano del modo previo.
+    let bar_style = Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(BAR_H),
+        },
+        padding: Rect {
+            left: length(10.0_f32),
+            right: length(10.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        flex_shrink: 0.0,
+        ..Default::default()
+    };
+
+    if let Some(style) = palette.signature {
+        return View::new(bar_style)
+            .paint_with(panel_signature_painter(style))
+            .children(vec![left_region, center_region, right_region]);
+    }
+
+    // Back-compat: fill plano + border top 1px en el wrapper column.
+    let border = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(1.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(palette.border);
+
+    let bar = View::new(bar_style)
+        .fill(palette.bg)
+        .children(vec![left_region, center_region, right_region]);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(BAR_H + 1.0),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(vec![border, bar])
+}
+
+fn segment_view<Msg: Clone + 'static>(
+    seg: StatusSegment<Msg>,
+    palette: &StatusBarPalette,
+) -> View<Msg> {
+    let fg = if seg.emphasized { palette.fg } else { palette.fg_muted };
+    let approx_w = seg.text.chars().count() as f32 * 6.0
+        + if seg.icon.is_some() { ICON_SIZE + 4.0 } else { 0.0 }
+        + 12.0;
+
+    let mut children: Vec<View<Msg>> = Vec::with_capacity(2);
+    if let Some(icon) = seg.icon {
+        children.push(
+            View::new(Style {
+                size: Size {
+                    width: length(ICON_SIZE),
+                    height: length(ICON_SIZE),
+                },
+                flex_shrink: 0.0,
+                ..Default::default()
+            })
+            .children(vec![icon_view(icon, fg, 1.4)]),
+        );
+    }
+    children.push(
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            flex_grow: 1.0,
+            align_items: Some(AlignItems::Center),
+            ..Default::default()
+        })
+        .text_aligned(seg.text.clone(), FONT_SIZE, fg, Alignment::Start),
+    );
+
+    let mut node = View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: length(approx_w),
+            height: percent(1.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        padding: Rect {
+            left: length(6.0_f32),
+            right: length(6.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        gap: Size {
+            width: length(4.0_f32),
+            height: length(0.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(children);
+
+    if let Some(msg) = seg.on_click {
+        node = node.hover_fill(palette.bg_hover).on_click(msg);
+    }
+    node
+}
diff --git a/widgets/switch/Cargo.toml b/widgets/switch/Cargo.toml
new file mode 100644
index 0000000..d02deda
--- /dev/null
+++ b/widgets/switch/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-switch"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-switch — toggle binario on/off (track + thumb) con paleta del theme. Para preferencias, modos y feature flags."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/switch/src/lib.rs b/widgets/switch/src/lib.rs
new file mode 100644
index 0000000..c5ec516
--- /dev/null
+++ b/widgets/switch/src/lib.rs
@@ -0,0 +1,152 @@
+//! `llimphi-widget-switch` — toggle binario (track + thumb).
+//!
+//! Render-only: la app guarda el `bool` en su modelo y dispatcha el
+//! Msg de toggle al click. Visualmente:
+//! - Track horizontal (40×22 default) con color del estado activo.
+//! - Thumb circular (18px) que se posiciona a la izquierda (off) o
+//!   derecha (on) del track.
+//!
+//! Para animar la transición, la app puede guardar un `Tween<f32>` con
+//! el progreso 0→1 y leerlo desde `view` para interpolar la posición
+//! del thumb. Sin tween la transición es instantánea — funcional pero
+//! menos elegante.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, Position, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::View;
+use llimphi_theme::Theme;
+
+/// Paleta del switch.
+#[derive(Debug, Clone, Copy)]
+pub struct SwitchPalette {
+    pub track_off: Color,
+    pub track_on: Color,
+    pub thumb: Color,
+}
+
+impl SwitchPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            track_off: t.bg_button,
+            track_on: t.accent,
+            thumb: t.fg_text,
+        }
+    }
+}
+
+const TRACK_W: f32 = 40.0;
+const TRACK_H: f32 = 22.0;
+const THUMB_R: f32 = 9.0; // radio en px → diámetro 18
+const PAD: f32 = 2.0;
+
+/// Construye un switch. `progress` en `[0.0, 1.0]` indica la
+/// posición animada del thumb (0 = off, 1 = on). Para la transición
+/// instantánea usar `if state { 1.0 } else { 0.0 }`.
+///
+/// `on_toggle` se dispatcha al click; la app actualiza su `bool` y
+/// (opcionalmente) lanza un `Tween` que actualiza `progress` por frame.
+pub fn switch_view<Msg: Clone + 'static>(
+    progress: f32,
+    on_toggle: Msg,
+    palette: &SwitchPalette,
+) -> View<Msg> {
+    let p = progress.clamp(0.0, 1.0);
+
+    // Track color interpola entre off y on según progress.
+    let track_color = lerp_color(palette.track_off, palette.track_on, p);
+
+    // Thumb absolute dentro del track. Range del centro: PAD+THUMB_R a TRACK_W-PAD-THUMB_R.
+    let min_x = PAD;
+    let max_x = TRACK_W - PAD - THUMB_R * 2.0;
+    let thumb_x = min_x + (max_x - min_x) * p;
+    let thumb_y = (TRACK_H - THUMB_R * 2.0) * 0.5;
+
+    let thumb = View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(thumb_x),
+            top: length(thumb_y),
+            right: auto(),
+            bottom: auto(),
+        },
+        size: Size {
+            width: length(THUMB_R * 2.0),
+            height: length(THUMB_R * 2.0),
+        },
+        ..Default::default()
+    })
+    .fill(palette.thumb)
+    .radius(THUMB_R as f64)
+    .paint_with(move |scene, _ts, rect| {
+        // Highlight radial pequeño en cuadrante superior — el thumb se
+        // lee como esfera, no como círculo plano. Mismo patrón que el
+        // dot del badge (P6).
+        use llimphi_ui::llimphi_raster::kurbo::{Affine, Circle};
+        use llimphi_ui::llimphi_raster::peniko::Fill;
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+        let cx = (rect.x + rect.w * 0.5) as f64;
+        let cy = (rect.y + rect.h * 0.32) as f64;
+        let r = (rect.w as f64 * 0.18).max(1.0);
+        let highlight = Color::from_rgba8(255, 255, 255, 70);
+        scene.fill(
+            Fill::NonZero,
+            Affine::IDENTITY,
+            highlight,
+            None,
+            &Circle::new((cx, cy), r),
+        );
+    });
+
+    let track_radius = (TRACK_H * 0.5) as f64;
+    View::new(Style {
+        size: Size {
+            width: length(TRACK_W),
+            height: length(TRACK_H),
+        },
+        ..Default::default()
+    })
+    .fill(track_color)
+    .radius(track_radius)
+    .paint_with(move |scene, _ts, rect| {
+        // Gloss superior en el track — pill con luz cayendo desde arriba.
+        // El track interpola color (off/on) en el fill, el gloss queda
+        // estable encima en ambos estados.
+        use llimphi_ui::llimphi_raster::kurbo::{Affine, Point, RoundedRect};
+        use llimphi_ui::llimphi_raster::peniko::{Fill, Gradient};
+        if rect.w <= 0.0 || rect.h <= 0.0 {
+            return;
+        }
+        let x0 = rect.x as f64;
+        let y0 = rect.y as f64;
+        let x1 = (rect.x + rect.w) as f64;
+        let y1 = (rect.y + rect.h) as f64;
+        let y_mid = y0 + (y1 - y0) * 0.5;
+        let rr = RoundedRect::new(x0, y0, x1, y1, track_radius);
+        let top = Color::from_rgba8(255, 255, 255, 28);
+        let bot = Color::from_rgba8(255, 255, 255, 0);
+        let g = Gradient::new_linear(Point::new(x0, y0), Point::new(x0, y_mid))
+            .with_stops([top, bot].as_slice());
+        scene.fill(Fill::NonZero, Affine::IDENTITY, &g, None, &rr);
+    })
+    .on_click(on_toggle)
+    .children(vec![thumb])
+}
+
+fn lerp_color(a: Color, b: Color, t: f32) -> Color {
+    let [r0, g0, b0, a0] = a.components;
+    let [r1, g1, b1, a1] = b.components;
+    use llimphi_ui::llimphi_raster::peniko::color::AlphaColor;
+    AlphaColor::new([
+        r0 + (r1 - r0) * t,
+        g0 + (g1 - g0) * t,
+        b0 + (b1 - b0) * t,
+        a0 + (a1 - a0) * t,
+    ])
+}
diff --git a/widgets/tabs/Cargo.toml b/widgets/tabs/Cargo.toml
new file mode 100644
index 0000000..d01a2e7
--- /dev/null
+++ b/widgets/tabs/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-widget-tabs"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-tabs — tira de tabs + área de contenido. Análogo Llimphi al `nahual-widget-tabs` GPUI. El caller mantiene el índice activo en el `Model` y le da al widget las labels + el view del tab activo."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-panel = { workspace = true }
diff --git a/widgets/tabs/LEEME.md b/widgets/tabs/LEEME.md
new file mode 100644
index 0000000..cff8999
--- /dev/null
+++ b/widgets/tabs/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-tabs
+
+> Tabs con cierre para [llimphi](../../README.md).
+
+Pestañas horizontales arrastrables, botón "+", close por pestaña. Activa por keyboard (Ctrl+Tab). Usado por `nada`, `pluma`, `puriy`.
diff --git a/widgets/tabs/README.md b/widgets/tabs/README.md
new file mode 100644
index 0000000..076c525
--- /dev/null
+++ b/widgets/tabs/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-tabs
+
+> Closeable tabs for [llimphi](../../README.md).
+
+Draggable horizontal tabs, "+" button, per-tab close. Keyboard active (Ctrl+Tab). Used by `nada`, `pluma`, `puriy`.
diff --git a/widgets/tabs/examples/tabs_demo.rs b/widgets/tabs/examples/tabs_demo.rs
new file mode 100644
index 0000000..25c44d6
--- /dev/null
+++ b/widgets/tabs/examples/tabs_demo.rs
@@ -0,0 +1,136 @@
+//! Showcase de `llimphi-widget-tabs`: 3 tabs con contenido distinto
+//! cada uno. Hover en los tabs inactivos cambia el bg.
+//!
+//! Corré con: `cargo run -p llimphi-widget-tabs --example showcase --release`.
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{App, Handle, View};
+use llimphi_widget_tabs::{tabs_view, TabsPalette, TabsSpec};
+
+#[derive(Clone)]
+enum Msg {
+    SelectTab(usize),
+}
+
+struct Model {
+    active: usize,
+}
+
+struct Showcase;
+
+impl App for Showcase {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · tabs showcase"
+    }
+
+    fn initial_size() -> (u32, u32) {
+        (900, 600)
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        Model { active: 0 }
+    }
+
+    fn update(model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
+        let mut m = model;
+        match msg {
+            Msg::SelectTab(i) => m.active = i,
+        }
+        m
+    }
+
+    fn view(model: &Model) -> View<Msg> {
+        let body = match model.active {
+            0 => content_pane(
+                "General",
+                "Acá vivirían los settings principales del módulo.\n\
+                 El click cambia de tab; el hover sobre tabs inactivos\n\
+                 ilumina el fondo levemente.",
+                Color::from_rgba8(220, 230, 245, 255),
+            ),
+            1 => content_pane(
+                "Avanzado",
+                "Variables esotéricas, banderas experimentales.\n\
+                 Probablemente no las toques.",
+                Color::from_rgba8(200, 220, 240, 255),
+            ),
+            _ => content_pane(
+                "Logs",
+                "[12:01:33] arranqué\n[12:01:34] cargué config\n\
+                 [12:01:35] esperando eventos…",
+                Color::from_rgba8(180, 195, 215, 255),
+            ),
+        };
+
+        tabs_view(TabsSpec {
+            labels: vec!["General".into(), "Avanzado".into(), "Logs".into()],
+            active: model.active,
+            on_select: Msg::SelectTab,
+            content: body,
+            tab_height: 36.0,
+            palette: TabsPalette::default(),
+            tab_width: Some(160.0),
+        })
+    }
+}
+
+fn content_pane(title: &str, body: &str, fg: Color) -> View<Msg> {
+    let header = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(36.0_f32),
+        },
+        padding: Rect {
+            left: length(20.0_f32),
+            right: length(20.0_f32),
+            top: length(8.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Start),
+        ..Default::default()
+    })
+    .text_aligned(
+        format!("# {title}"),
+        18.0,
+        Color::from_rgba8(220, 230, 245, 255),
+        Alignment::Start,
+    );
+
+    let body_view = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        flex_grow: 1.0,
+        padding: Rect {
+            left: length(20.0_f32),
+            right: length(20.0_f32),
+            top: length(0.0_f32),
+            bottom: length(20.0_f32),
+        },
+        ..Default::default()
+    })
+    .text_aligned(body.to_string(), 13.0, fg, Alignment::Start);
+
+    View::new(Style {
+        flex_direction: llimphi_ui::llimphi_layout::taffy::FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![header, body_view])
+}
+
+fn main() {
+    llimphi_ui::run::<Showcase>();
+}
diff --git a/widgets/tabs/src/lib.rs b/widgets/tabs/src/lib.rs
new file mode 100644
index 0000000..0abc6dd
--- /dev/null
+++ b/widgets/tabs/src/lib.rs
@@ -0,0 +1,271 @@
+//! `llimphi-widget-tabs` — tira de tabs + área de contenido.
+//!
+//! Análogo Llimphi al `nahual-widget-tabs` GPUI. El widget no mantiene
+//! estado interno: el `Model` del App lleva el índice activo, le pasa al
+//! widget las labels + el `View` del tab activo, y maneja el Msg de
+//! cambio de tab.
+//!
+//! Uso típico:
+//!
+//! ```ignore
+//! tabs_view(
+//!     TabsSpec {
+//!         labels: vec!["General".into(), "Avanzado".into(), "Logs".into()],
+//!         active: model.active_tab,
+//!         on_select: |i| Msg::SelectTab(i),
+//!         content: render_active_tab(model),
+//!         palette: TabsPalette::default(),
+//!     }
+//! )
+//! ```
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, percent, Dimension, FlexDirection, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+
+/// Ancho mínimo de un tab cuando `tab_width` es `None` — evita que los
+/// tabs cortos (un nombre de 4 chars) se vean apretados contra los
+/// vecinos. Si se especifica `tab_width: Some(px)`, se ignora.
+const DEFAULT_MIN_TAB_WIDTH: f32 = 120.0;
+/// Separación horizontal entre tabs — deja ver el `bg_bar` como hilo
+/// fino, suaviza el bloque sólido de antes.
+const TAB_GAP: f32 = 2.0;
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_widget_panel::{panel_signature_painter, PanelStyle};
+
+/// Paleta del tab bar.
+#[derive(Debug, Clone, Copy)]
+pub struct TabsPalette {
+    pub bg_bar: Color,
+    pub bg_tab_inactive: Color,
+    pub bg_tab_hover: Color,
+    pub bg_tab_active: Color,
+    pub fg_text: Color,
+    pub fg_text_active: Color,
+    /// Línea bajo el tab activo (acento). Si es `None` no se dibuja.
+    pub accent: Option<Color>,
+    /// Firma visual del área de contenido (sólo gradient — el accent
+    /// del tab activo justo encima ya cumple el rol del hairline). `None`
+    /// cae al fill plano de `bg_tab_active` (back-compat).
+    pub content_signature: Option<PanelStyle>,
+}
+
+impl Default for TabsPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl TabsPalette {
+    /// Construye la paleta desde un `Theme` semántico.
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_bar: t.bg_panel_alt,
+            bg_tab_inactive: t.bg_panel,
+            bg_tab_hover: t.bg_row_hover,
+            bg_tab_active: t.bg_app,
+            fg_text: t.fg_muted,
+            fg_text_active: t.fg_text,
+            accent: Some(t.accent),
+            content_signature: Some(PanelStyle {
+                radius: 0.0,
+                bg_base: t.bg_app,
+                ..PanelStyle::neutral(t)
+            }),
+        }
+    }
+}
+
+/// Especificación de los tabs. `labels.len()` define cuántos tabs; el
+/// `Msg` por click se construye con `on_select(idx)`.
+pub struct TabsSpec<Msg, F> {
+    pub labels: Vec<String>,
+    pub active: usize,
+    /// Function from tab index to Msg. Se invoca una vez por tab en `view`.
+    pub on_select: F,
+    /// Contenido del tab activo. El widget lo coloca debajo de la barra.
+    pub content: View<Msg>,
+    pub tab_height: f32,
+    pub palette: TabsPalette,
+    /// Ancho de cada tab. `None` = tamaño según contenido (auto).
+    pub tab_width: Option<f32>,
+}
+
+/// Compone la barra de tabs + área de contenido. La función `on_select`
+/// se consume — se invoca una vez por tab para construir su Msg.
+pub fn tabs_view<Msg, F>(spec: TabsSpec<Msg, F>) -> View<Msg>
+where
+    Msg: Clone + 'static,
+    F: Fn(usize) -> Msg,
+{
+    let TabsSpec {
+        labels,
+        active,
+        on_select,
+        content,
+        tab_height,
+        palette,
+        tab_width,
+    } = spec;
+
+    let mut bar_children: Vec<View<Msg>> = Vec::with_capacity(labels.len() + 1);
+    for (i, label) in labels.iter().enumerate() {
+        bar_children.push(tab_button(
+            label,
+            i == active,
+            tab_height,
+            tab_width,
+            &palette,
+            on_select(i),
+        ));
+    }
+    // Spacer al final: empuja los tabs al inicio y rellena el resto del
+    // ancho con el bg_bar.
+    bar_children.push(
+        View::new(Style {
+            size: Size {
+                width: Dimension::auto(),
+                height: length(tab_height),
+            },
+            flex_grow: 1.0,
+            ..Default::default()
+        })
+        .fill(palette.bg_bar),
+    );
+
+    let bar = View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(tab_height + accent_thickness(&palette)),
+        },
+        // No comprimir verticalmente cuando el contenido del tab activo
+        // pide percent(1.0): si no, el column padre reparte overflow y
+        // come la altura del tab strip.
+        flex_shrink: 0.0,
+        gap: Size {
+            width: length(TAB_GAP),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.bg_bar)
+    .children(bar_children);
+
+    let content_style = Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        flex_grow: 1.0,
+        ..Default::default()
+    };
+    let content_wrap = match palette.content_signature {
+        Some(style) => View::new(content_style)
+            .paint_with(panel_signature_painter(style))
+            .children(vec![content]),
+        None => View::new(content_style)
+            .fill(palette.bg_tab_active)
+            .children(vec![content]),
+    };
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![bar, content_wrap])
+}
+
+fn tab_button<Msg: Clone + 'static>(
+    label: &str,
+    active: bool,
+    height: f32,
+    width: Option<f32>,
+    palette: &TabsPalette,
+    on_click: Msg,
+) -> View<Msg> {
+    let (bg, fg) = if active {
+        (palette.bg_tab_active, palette.fg_text_active)
+    } else {
+        (palette.bg_tab_inactive, palette.fg_text)
+    };
+    let w = match width {
+        Some(px) => length(px),
+        None => Dimension::auto(),
+    };
+    // Cuando el tab es auto-width, garantizamos min para que un label
+    // corto («main.rs», 7 chars) no apriete al vecino.
+    let min_w = match width {
+        Some(_) => auto(),
+        None => length(DEFAULT_MIN_TAB_WIDTH),
+    };
+
+    let label_view = View::new(Style {
+        size: Size {
+            width: w,
+            height: length(height),
+        },
+        min_size: Size { width: min_w, height: auto() },
+        padding: Rect {
+            left: length(16.0_f32),
+            right: length(16.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        ..Default::default()
+    })
+    .fill(bg)
+    .hover_fill(palette.bg_tab_hover)
+    .text_aligned(label.to_string(), 13.0, fg, Alignment::Center)
+    .on_click(on_click);
+
+    // Línea de acento bajo el tab activo. Para inactivos se dibuja con el
+    // bg_bar (transparente al ojo).
+    let accent_color = match (palette.accent, active) {
+        (Some(c), true) => c,
+        _ => palette.bg_bar,
+    };
+    let accent = View::new(Style {
+        size: Size {
+            width: w,
+            height: length(accent_thickness(palette)),
+        },
+        min_size: Size { width: min_w, height: auto() },
+        ..Default::default()
+    })
+    .fill(accent_color);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: w,
+            height: length(height + accent_thickness(palette)),
+        },
+        min_size: Size { width: min_w, height: auto() },
+        // Cuando hay muchos tabs y el ancho total excede la bar, no
+        // comprimir cada tab — preferimos overflow a verlos como una
+        // lasca delgada. (Eventualmente: scroll horizontal.)
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(vec![label_view, accent])
+}
+
+fn accent_thickness(palette: &TabsPalette) -> f32 {
+    if palette.accent.is_some() {
+        2.0
+    } else {
+        0.0
+    }
+}
diff --git a/widgets/text-area/Cargo.toml b/widgets/text-area/Cargo.toml
new file mode 100644
index 0000000..916faba
--- /dev/null
+++ b/widgets/text-area/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-text-area"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-text-area — input de texto multilínea para Llimphi: estado plano (String con \\n), apply_key con Enter→\\n + Backspace + caracteres imprimibles, render multilínea con caret bloque al final del último renglón."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/text-area/LEEME.md b/widgets/text-area/LEEME.md
new file mode 100644
index 0000000..0cba865
--- /dev/null
+++ b/widgets/text-area/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-text-area
+
+> Textarea multi-line para [llimphi](../../README.md).
+
+Sin highlight (eso es `text-editor`). Wrap configurable, char count, placeholder.
diff --git a/widgets/text-area/README.md b/widgets/text-area/README.md
new file mode 100644
index 0000000..92f0f60
--- /dev/null
+++ b/widgets/text-area/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-text-area
+
+> Multi-line textarea for [llimphi](../../README.md).
+
+No highlight (that's `text-editor`). Configurable wrap, char count, placeholder.
diff --git a/widgets/text-area/src/lib.rs b/widgets/text-area/src/lib.rs
new file mode 100644
index 0000000..f480c03
--- /dev/null
+++ b/widgets/text-area/src/lib.rs
@@ -0,0 +1,261 @@
+//! `llimphi-widget-text-area` — input de texto multilínea para Llimphi.
+//!
+//! Versión multilínea del [`llimphi-widget-text-input`]. Mismo contrato Elm
+//! (estado en el `Model`, `apply_key` desde el `update`, view con foco),
+//! pero acepta `\n` como contenido válido: Enter inserta salto de línea
+//! en lugar de "submit". El llamador decide cómo commitear (típicamente
+//! Ctrl+Enter o un botón ✓ aparte).
+//!
+//! El render aprovecha que `View::text_aligned` ya hace layout multilínea
+//! vía parley (line wrap por `max_width`, saltos `\n` respetados).
+//!
+//! Limitaciones del PMV (heredadas del text-input): sin posicionamiento
+//! del cursor con flechas, sin selección, sin copy/paste, sin IME. El
+//! caret se simula como un bloque sólido al final del texto.
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{Key, KeyEvent, KeyState, NamedKey, View};
+
+/// Paleta del text-area — mismos slots que el text-input.
+#[derive(Debug, Clone, Copy)]
+pub struct TextAreaPalette {
+    pub bg: Color,
+    pub bg_focus: Color,
+    pub border: Color,
+    pub border_focus: Color,
+    pub fg_text: Color,
+    pub fg_placeholder: Color,
+}
+
+impl Default for TextAreaPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl TextAreaPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg: t.bg_input,
+            bg_focus: t.bg_input_focus,
+            border: t.border,
+            border_focus: t.border_focus,
+            fg_text: t.fg_text,
+            fg_placeholder: t.fg_placeholder,
+        }
+    }
+}
+
+/// Estado del text-area. Vive en el `Model`; `apply_key` se llama desde
+/// el `update` para ediciones por tecla.
+#[derive(Debug, Clone, Default)]
+pub struct TextAreaState {
+    text: String,
+}
+
+impl TextAreaState {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn text(&self) -> &str {
+        &self.text
+    }
+
+    pub fn is_empty(&self) -> bool {
+        self.text.is_empty()
+    }
+
+    pub fn clear(&mut self) {
+        self.text.clear();
+    }
+
+    pub fn set_text(&mut self, s: impl Into<String>) {
+        self.text = s.into();
+    }
+
+    /// Cantidad de líneas (≥ 1, mismo criterio que `str::lines` + 1 si
+    /// el texto termina en `\n`).
+    pub fn line_count(&self) -> usize {
+        if self.text.is_empty() {
+            return 1;
+        }
+        let mut n = self.text.lines().count();
+        if self.text.ends_with('\n') {
+            n += 1;
+        }
+        n.max(1)
+    }
+
+    /// Aplica una tecla al estado. Devuelve `true` si cambió el contenido.
+    ///
+    /// Maneja: Backspace, Enter (inserta `\n`), e inserción de
+    /// caracteres imprimibles vía `event.text`. NO maneja: Tab (lo
+    /// dejamos al caller — típicamente cambio de foco o indent),
+    /// Escape, flechas.
+    pub fn apply_key(&mut self, event: &KeyEvent) -> bool {
+        if event.state != KeyState::Pressed {
+            return false;
+        }
+        match &event.key {
+            Key::Named(NamedKey::Backspace) => self.text.pop().is_some(),
+            Key::Named(NamedKey::Enter) => {
+                self.text.push('\n');
+                true
+            }
+            _ => {
+                let Some(text) = event.text.as_ref() else {
+                    return false;
+                };
+                // Filtramos caracteres de control — el `\n` lo metemos
+                // sólo desde NamedKey::Enter para tener un único path.
+                if text.is_empty() || text.chars().any(|c| c.is_control()) {
+                    return false;
+                }
+                self.text.push_str(text);
+                true
+            }
+        }
+    }
+}
+
+/// Render del text-area. `body_height` es el alto disponible del bloque
+/// (el widget no calcula altura automática; el caller decide). Con foco
+/// se pinta un caret bloque al final del texto.
+pub fn text_area_view<Msg: Clone + 'static>(
+    state: &TextAreaState,
+    placeholder: &str,
+    focused: bool,
+    body_height: f32,
+    palette: &TextAreaPalette,
+    on_focus: Msg,
+) -> View<Msg> {
+    let is_empty = state.is_empty();
+    let display = if is_empty {
+        placeholder.to_string()
+    } else {
+        state.text.clone()
+    };
+    let text_color = if is_empty { palette.fg_placeholder } else { palette.fg_text };
+    let (bg, border) = if focused {
+        (palette.bg_focus, palette.border_focus)
+    } else {
+        (palette.bg, palette.border)
+    };
+
+    let inner = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(body_height),
+        },
+        padding: Rect {
+            left: length(6.0_f32),
+            right: length(6.0_f32),
+            top: length(4.0_f32),
+            bottom: length(4.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(bg)
+    .text_aligned(display, 12.0, text_color, Alignment::Start);
+
+    // Wrapper que pinta el borde como fill del padre (1 px alrededor
+    // del inner gracias al padding del padre).
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(body_height + 2.0),
+        },
+        padding: Rect {
+            left: length(1.0_f32),
+            right: length(1.0_f32),
+            top: length(1.0_f32),
+            bottom: length(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(border)
+    .on_click(on_focus)
+    .children(vec![inner])
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use llimphi_ui::Modifiers;
+
+    fn k(named: NamedKey) -> KeyEvent {
+        KeyEvent {
+            key: Key::Named(named),
+            state: KeyState::Pressed,
+            text: None,
+            modifiers: Modifiers::default(),
+            repeat: false,
+        }
+    }
+
+    fn k_text(s: &str) -> KeyEvent {
+        KeyEvent {
+            key: Key::Character(s.into()),
+            state: KeyState::Pressed,
+            text: Some(s.to_owned()),
+            modifiers: Modifiers::default(),
+            repeat: false,
+        }
+    }
+
+    #[test]
+    fn enter_inserta_salto_de_linea() {
+        let mut s = TextAreaState::new();
+        s.apply_key(&k_text("a"));
+        s.apply_key(&k(NamedKey::Enter));
+        s.apply_key(&k_text("b"));
+        assert_eq!(s.text(), "a\nb");
+        assert_eq!(s.line_count(), 2);
+    }
+
+    #[test]
+    fn backspace_borra_el_salto_y_une_lineas() {
+        let mut s = TextAreaState::new();
+        s.set_text("a\nb");
+        s.apply_key(&k(NamedKey::Backspace));
+        s.apply_key(&k(NamedKey::Backspace));
+        assert_eq!(s.text(), "a");
+    }
+
+    #[test]
+    fn line_count_vacio_es_uno() {
+        let s = TextAreaState::new();
+        assert_eq!(s.line_count(), 1);
+    }
+
+    #[test]
+    fn line_count_cuenta_trailing_newline() {
+        let mut s = TextAreaState::new();
+        s.set_text("a\nb\n");
+        assert_eq!(s.line_count(), 3);
+    }
+
+    #[test]
+    fn caracteres_de_control_se_filtran() {
+        let mut s = TextAreaState::new();
+        s.apply_key(&k_text("\t"));
+        assert!(s.is_empty());
+    }
+
+    #[test]
+    fn set_text_roundtrip() {
+        let mut s = TextAreaState::new();
+        s.set_text("hola\nmundo");
+        assert_eq!(s.text(), "hola\nmundo");
+        s.clear();
+        assert!(s.is_empty());
+    }
+}
diff --git a/widgets/text-editor-core/Cargo.toml b/widgets/text-editor-core/Cargo.toml
new file mode 100644
index 0000000..9a4be5b
--- /dev/null
+++ b/widgets/text-editor-core/Cargo.toml
@@ -0,0 +1,18 @@
+[package]
+name = "llimphi-widget-text-editor-core"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-text-editor-core — núcleo agnóstico del editor de código: rope buffer (ropey), cursor + selección, undo/redo, bracket matching, find, diagnostics y syntax highlighting (tree-sitter). Sin dependencias de render — reutilizable en TUI/web/headless. La capa Llimphi (state + view) vive en `llimphi-widget-text-editor`."
+
+[dependencies]
+ropey = { workspace = true }
+tree-sitter = { workspace = true }
+tree-sitter-rust = { workspace = true }
+tree-sitter-python = { workspace = true }
+# peniko sólo aporta el tipo de color (peniko::Color) para SyntaxPalette;
+# es un crate de tipos sin GPU — no arrastra wgpu/vello. Versión alineada
+# con la que expone vello 0.5 (ver workspace root).
+peniko = "0.4"
diff --git a/widgets/text-editor-core/src/bracket.rs b/widgets/text-editor-core/src/bracket.rs
new file mode 100644
index 0000000..7cc5e1c
--- /dev/null
+++ b/widgets/text-editor-core/src/bracket.rs
@@ -0,0 +1,165 @@
+//! Matching de paréntesis/corchetes/llaves bajo el cursor.
+//!
+//! Si el carácter inmediatamente *antes* o *en* el caret es un bracket
+//! abridor o cerrador, busca su par contando profundidad y devuelve las
+//! dos posiciones. Útil para el visor (resaltar ambas).
+//!
+//! Restricciones del PMV: no diferencia brackets dentro de strings ni
+//! comentarios — el tokenizer del bloque de highlight (tree-sitter) lo
+//! resolverá mejor en una pasada futura. Para WAT/JSON/Lisp esto basta.
+
+use crate::buffer::Buffer;
+use crate::cursor::{Cursor, Pos};
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Direction {
+    Forward,
+    Backward,
+}
+
+/// Pares reconocidos.
+const PAIRS: &[(char, char)] = &[('(', ')'), ('[', ']'), ('{', '}')];
+
+fn pair_of(c: char) -> Option<(char, char, Direction)> {
+    for &(o, cl) in PAIRS {
+        if c == o {
+            return Some((o, cl, Direction::Forward));
+        }
+        if c == cl {
+            return Some((o, cl, Direction::Backward));
+        }
+    }
+    None
+}
+
+/// Si el caret toca un bracket, devuelve `(pos_del_bracket, pos_del_par)`.
+pub fn find_bracket_pair(buf: &Buffer, cursor: &Cursor) -> Option<(Pos, Pos)> {
+    let caret_off = buf.pos_to_offset(cursor.caret.line, cursor.caret.col);
+
+    // Probamos en `caret` y `caret-1` — un caret "entre" dos chars puede
+    // tocar al de la izquierda visualmente.
+    let candidates: [Option<usize>; 2] = [
+        Some(caret_off).filter(|&o| o < buf.len_chars()),
+        caret_off.checked_sub(1),
+    ];
+
+    for opt in candidates {
+        let Some(off) = opt else { continue };
+        let Some(ch) = buf.char_at(off) else { continue };
+        let Some((open, close, dir)) = pair_of(ch) else { continue };
+        let mate = match dir {
+            Direction::Forward => find_forward(buf, off + 1, open, close),
+            Direction::Backward => find_backward(buf, off, open, close),
+        };
+        if let Some(mate_off) = mate {
+            let a = buf.offset_to_pos(off);
+            let b = buf.offset_to_pos(mate_off);
+            return Some((Pos::new(a.0, a.1), Pos::new(b.0, b.1)));
+        }
+    }
+    None
+}
+
+fn find_forward(buf: &Buffer, from: usize, open: char, close: char) -> Option<usize> {
+    let mut depth = 1usize;
+    let mut off = from;
+    let len = buf.len_chars();
+    while off < len {
+        match buf.char_at(off) {
+            Some(c) if c == open => depth += 1,
+            Some(c) if c == close => {
+                depth -= 1;
+                if depth == 0 {
+                    return Some(off);
+                }
+            }
+            _ => {}
+        }
+        off += 1;
+    }
+    None
+}
+
+fn find_backward(buf: &Buffer, before: usize, open: char, close: char) -> Option<usize> {
+    if before == 0 {
+        return None;
+    }
+    let mut depth = 1usize;
+    let mut off = before;
+    while off > 0 {
+        off -= 1;
+        match buf.char_at(off) {
+            Some(c) if c == close => depth += 1,
+            Some(c) if c == open => {
+                depth -= 1;
+                if depth == 0 {
+                    return Some(off);
+                }
+            }
+            _ => {}
+        }
+    }
+    None
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn empareja_paren_simple() {
+        let b = Buffer::from_str("(a)");
+        let c = Cursor::at(0, 0); // caret antes del '('
+        let (a, m) = find_bracket_pair(&b, &c).unwrap();
+        assert_eq!(a, Pos::new(0, 0));
+        assert_eq!(m, Pos::new(0, 2));
+    }
+
+    #[test]
+    fn empareja_desde_el_lado_derecho() {
+        let b = Buffer::from_str("(a)");
+        let c = Cursor::at(0, 3); // caret después del ')'
+        let (a, m) = find_bracket_pair(&b, &c).unwrap();
+        assert_eq!(a, Pos::new(0, 2)); // ')'
+        assert_eq!(m, Pos::new(0, 0)); // '('
+    }
+
+    #[test]
+    fn anidados_respeta_profundidad() {
+        let b = Buffer::from_str("((a))");
+        let c = Cursor::at(0, 0); // primer '('
+        let (_, m) = find_bracket_pair(&b, &c).unwrap();
+        assert_eq!(m, Pos::new(0, 4)); // último ')'
+    }
+
+    #[test]
+    fn empareja_brackets_y_llaves() {
+        let b = Buffer::from_str("[a]");
+        assert!(find_bracket_pair(&b, &Cursor::at(0, 0)).is_some());
+
+        let b2 = Buffer::from_str("{a}");
+        assert!(find_bracket_pair(&b2, &Cursor::at(0, 0)).is_some());
+    }
+
+    #[test]
+    fn caret_lejos_de_bracket_devuelve_none() {
+        let b = Buffer::from_str("hola");
+        let c = Cursor::at(0, 2);
+        assert!(find_bracket_pair(&b, &c).is_none());
+    }
+
+    #[test]
+    fn bracket_sin_par_devuelve_none() {
+        let b = Buffer::from_str("(a");
+        let c = Cursor::at(0, 0);
+        assert!(find_bracket_pair(&b, &c).is_none());
+    }
+
+    #[test]
+    fn multilinea_pasa_saltos() {
+        let b = Buffer::from_str("(\n  a\n)");
+        let c = Cursor::at(0, 0);
+        let (_, m) = find_bracket_pair(&b, &c).unwrap();
+        assert_eq!(m, Pos::new(2, 0));
+    }
+}
diff --git a/widgets/text-editor-core/src/buffer.rs b/widgets/text-editor-core/src/buffer.rs
new file mode 100644
index 0000000..f998ece
--- /dev/null
+++ b/widgets/text-editor-core/src/buffer.rs
@@ -0,0 +1,255 @@
+//! Buffer del editor — wrapper fino sobre [`ropey::Rope`] con las
+//! conversiones de coordenadas que el resto del crate usa.
+//!
+//! Coordenadas:
+//! - `char_offset`: índice de carácter (no byte) en el buffer entero.
+//! - `(line, col)`: línea (0-based) + columna en chars dentro de esa línea.
+//!
+//! Convenciones:
+//! - Las líneas son las que define `Rope::lines()` — un `\n` separa
+//!   líneas; la última línea puede o no terminar en `\n` (en cuyo caso
+//!   hay una línea vacía extra después).
+//! - `col` cuenta chars, no graphemes ni bytes. Para CJK ancho doble
+//!   el render decidirá el ancho visual; el cursor avanza en chars.
+
+use ropey::Rope;
+
+#[derive(Debug, Clone)]
+pub struct Buffer {
+    rope: Rope,
+}
+
+impl Default for Buffer {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl Buffer {
+    pub fn new() -> Self {
+        Self { rope: Rope::new() }
+    }
+
+    pub fn from_str(s: &str) -> Self {
+        Self { rope: Rope::from_str(s) }
+    }
+
+    pub fn text(&self) -> String {
+        self.rope.to_string()
+    }
+
+    pub fn len_chars(&self) -> usize {
+        self.rope.len_chars()
+    }
+
+    pub fn len_lines(&self) -> usize {
+        self.rope.len_lines().max(1)
+    }
+
+    pub fn is_empty(&self) -> bool {
+        self.rope.len_chars() == 0
+    }
+
+    /// Devuelve la línea `n` como `String` (incluye su trailing `\n` si
+    /// no es la última). Si `n` está fuera de rango devuelve `""`.
+    pub fn line(&self, n: usize) -> String {
+        if n >= self.rope.len_lines() {
+            return String::new();
+        }
+        self.rope.line(n).to_string()
+    }
+
+    /// Cantidad de chars en la línea `n` **sin contar** el `\n` terminal.
+    pub fn line_len_chars(&self, n: usize) -> usize {
+        if n >= self.rope.len_lines() {
+            return 0;
+        }
+        let line = self.rope.line(n);
+        let mut len = line.len_chars();
+        // Quitamos el `\n` final si lo hay.
+        if len > 0 && line.char(len - 1) == '\n' {
+            len -= 1;
+        }
+        len
+    }
+
+    /// Convierte `char_offset` global a `(line, col)`.
+    pub fn offset_to_pos(&self, offset: usize) -> (usize, usize) {
+        let off = offset.min(self.rope.len_chars());
+        let line = self.rope.char_to_line(off);
+        let line_start = self.rope.line_to_char(line);
+        (line, off - line_start)
+    }
+
+    /// Convierte `(line, col)` a `char_offset`. Clampea `line` y `col`
+    /// para no panicear con coordenadas fuera de rango.
+    pub fn pos_to_offset(&self, line: usize, col: usize) -> usize {
+        let line = line.min(self.rope.len_lines().saturating_sub(1));
+        let line_start = self.rope.line_to_char(line);
+        let line_chars = self.line_len_chars(line);
+        let col = col.min(line_chars);
+        line_start + col
+    }
+
+    /// Carácter en `char_offset`. `None` si está fuera de rango.
+    pub fn char_at(&self, offset: usize) -> Option<char> {
+        if offset >= self.rope.len_chars() {
+            return None;
+        }
+        Some(self.rope.char(offset))
+    }
+
+    /// Slice `[start..end)` como `String`. Clampea para no panicear.
+    pub fn slice(&self, start: usize, end: usize) -> String {
+        let len = self.rope.len_chars();
+        let s = start.min(len);
+        let e = end.min(len).max(s);
+        self.rope.slice(s..e).to_string()
+    }
+
+    /// Inserta `s` en `offset`. Clampea `offset`.
+    pub fn insert(&mut self, offset: usize, s: &str) {
+        let off = offset.min(self.rope.len_chars());
+        self.rope.insert(off, s);
+    }
+
+    /// Borra `[start..end)`. Clampea ambos.
+    pub fn delete(&mut self, start: usize, end: usize) {
+        let len = self.rope.len_chars();
+        let s = start.min(len);
+        let e = end.min(len).max(s);
+        if s == e {
+            return;
+        }
+        self.rope.remove(s..e);
+    }
+
+    pub fn set_text(&mut self, s: &str) {
+        self.rope = Rope::from_str(s);
+    }
+
+    pub fn replace_all(&mut self, s: &str) {
+        self.set_text(s);
+    }
+
+    /// Convierte char_offset → byte_offset. tree-sitter trabaja en bytes
+    /// (UTF-8); el editor en chars. Esto las conecta.
+    pub fn char_to_byte(&self, char_offset: usize) -> usize {
+        let off = char_offset.min(self.rope.len_chars());
+        self.rope.char_to_byte(off)
+    }
+
+    /// Línea (0-based) que contiene el char_offset dado.
+    pub fn char_to_line(&self, char_offset: usize) -> usize {
+        let off = char_offset.min(self.rope.len_chars());
+        self.rope.char_to_line(off)
+    }
+
+    /// Byte_offset del primer char de la línea `n`.
+    pub fn line_to_byte(&self, line: usize) -> usize {
+        let line = line.min(self.rope.len_lines());
+        self.rope.line_to_byte(line)
+    }
+
+    /// Devuelve el rango `[start_col..col)` que contiene el "word" actual
+    /// — desde el último carácter no-de-palabra hasta `col`, en la línea
+    /// `line`. Útil para autocompletion (smart-replace del prefijo).
+    pub fn current_word_prefix(&self, line: usize, col: usize) -> (usize, String) {
+        let line_text = self.line(line);
+        let chars: Vec<char> = line_text
+            .chars()
+            .filter(|c| *c != '\n')
+            .collect();
+        let end = col.min(chars.len());
+        let mut start = end;
+        while start > 0 && is_word_char(chars[start - 1]) {
+            start -= 1;
+        }
+        let prefix: String = chars[start..end].iter().collect();
+        (start, prefix)
+    }
+}
+
+fn is_word_char(c: char) -> bool {
+    c.is_alphanumeric() || c == '_'
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn empty_buffer_has_one_line() {
+        let b = Buffer::new();
+        assert_eq!(b.len_lines(), 1);
+        assert_eq!(b.line_len_chars(0), 0);
+    }
+
+    #[test]
+    fn pos_offset_roundtrip() {
+        let b = Buffer::from_str("hola\nmundo\nfin");
+        let cases = [(0usize, 0usize), (0, 4), (1, 0), (1, 5), (2, 3)];
+        for (line, col) in cases {
+            let off = b.pos_to_offset(line, col);
+            assert_eq!(b.offset_to_pos(off), (line, col));
+        }
+    }
+
+    #[test]
+    fn line_len_excludes_trailing_newline() {
+        let b = Buffer::from_str("hola\nfin");
+        assert_eq!(b.line_len_chars(0), 4); // "hola" sin \n
+        assert_eq!(b.line_len_chars(1), 3); // "fin"
+    }
+
+    #[test]
+    fn insert_and_delete_modify_text() {
+        let mut b = Buffer::from_str("ab");
+        b.insert(1, "X");
+        assert_eq!(b.text(), "aXb");
+        b.delete(1, 2);
+        assert_eq!(b.text(), "ab");
+    }
+
+    #[test]
+    fn slice_clampea() {
+        let b = Buffer::from_str("hola");
+        assert_eq!(b.slice(0, 100), "hola");
+        assert_eq!(b.slice(50, 100), "");
+        assert_eq!(b.slice(2, 1), ""); // end < start clampea
+    }
+
+    #[test]
+    fn current_word_prefix_basic() {
+        let b = Buffer::from_str("let hola_mundo = 1;");
+        // Caret en col 14 (después de la 'o' de "hola_mundo").
+        let (start, p) = b.current_word_prefix(0, 14);
+        assert_eq!(start, 4);
+        assert_eq!(p, "hola_mundo");
+    }
+
+    #[test]
+    fn current_word_prefix_en_inicio_es_vacio() {
+        let b = Buffer::from_str("hola");
+        let (start, p) = b.current_word_prefix(0, 0);
+        assert_eq!(start, 0);
+        assert!(p.is_empty());
+    }
+
+    #[test]
+    fn current_word_prefix_caret_despues_de_no_word() {
+        let b = Buffer::from_str("foo.bar");
+        let (start, p) = b.current_word_prefix(0, 4);
+        // El '.' no es word; el prefijo empieza ahí.
+        assert_eq!(start, 4);
+        assert!(p.is_empty());
+    }
+
+    #[test]
+    fn pos_to_offset_clampea_col() {
+        let b = Buffer::from_str("ab\ncd");
+        // col fuera de rango → fin de línea
+        assert_eq!(b.pos_to_offset(0, 99), 2);
+        assert_eq!(b.pos_to_offset(1, 99), 5);
+    }
+}
diff --git a/widgets/text-editor-core/src/clipboard.rs b/widgets/text-editor-core/src/clipboard.rs
new file mode 100644
index 0000000..efb11d5
--- /dev/null
+++ b/widgets/text-editor-core/src/clipboard.rs
@@ -0,0 +1,50 @@
+//! Clipboard abstracto. El editor no quiere acoplarse a un backend de
+//! SO concreto (X11 / Wayland / macOS / Windows), así que define el
+//! trait y entrega un mock para tests. La impl real (vía `arboard`)
+//! vive del lado del caller — típicamente la app embebida en
+//! `nada` o el visor del notebook.
+
+/// Backend de clipboard. `set` mete texto; `get` lo lee. Cualquiera de
+/// los dos puede fallar (sin display, headless CI, race con otro
+/// programa) — `None` / no-op silencioso es válido.
+pub trait Clipboard: Send {
+    fn get(&mut self) -> Option<String>;
+    fn set(&mut self, s: &str);
+}
+
+/// Clipboard de memoria — útil para tests y como fallback cuando el
+/// sistema no expone uno.
+#[derive(Debug, Default, Clone)]
+pub struct MemClipboard {
+    content: Option<String>,
+}
+
+impl MemClipboard {
+    pub fn new() -> Self {
+        Self::default()
+    }
+    pub fn with(s: impl Into<String>) -> Self {
+        Self { content: Some(s.into()) }
+    }
+}
+
+impl Clipboard for MemClipboard {
+    fn get(&mut self) -> Option<String> {
+        self.content.clone()
+    }
+    fn set(&mut self, s: &str) {
+        self.content = Some(s.to_owned());
+    }
+}
+
+/// "No clipboard" — `set` descarta, `get` devuelve `None`. Útil cuando
+/// el caller quiere desactivar copy/paste explícitamente.
+#[derive(Debug, Default, Clone, Copy)]
+pub struct NullClipboard;
+
+impl Clipboard for NullClipboard {
+    fn get(&mut self) -> Option<String> {
+        None
+    }
+    fn set(&mut self, _: &str) {}
+}
diff --git a/widgets/text-editor-core/src/cursor.rs b/widgets/text-editor-core/src/cursor.rs
new file mode 100644
index 0000000..cf21501
--- /dev/null
+++ b/widgets/text-editor-core/src/cursor.rs
@@ -0,0 +1,325 @@
+//! Cursor + selección. Coordenadas en `(line, col)` (col en chars).
+//!
+//! Un [`Cursor`] tiene siempre una posición `caret` y opcionalmente un
+//! `anchor`: si están en distintos puntos, hay una **selección**.
+//! Movimiento sin `shift` colapsa la selección al caret nuevo;
+//! movimiento con `shift` extiende desde el `anchor`.
+
+use crate::buffer::Buffer;
+
+fn is_word(c: char) -> bool {
+    c.is_alphanumeric() || c == '_'
+}
+fn is_ws(c: char) -> bool {
+    c.is_whitespace() && c != '\n'
+}
+
+/// Posición lógica del cursor — (línea, columna en chars).
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+pub struct Pos {
+    pub line: usize,
+    pub col: usize,
+}
+
+impl Pos {
+    pub const fn new(line: usize, col: usize) -> Self {
+        Self { line, col }
+    }
+    pub const ORIGIN: Pos = Pos { line: 0, col: 0 };
+}
+
+/// Selección activa (anchor + caret). El rango efectivo es
+/// `(min(anchor,caret), max(anchor,caret))` en orden de offset.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct Selection {
+    pub anchor: Pos,
+    pub caret: Pos,
+}
+
+impl Selection {
+    pub fn new(anchor: Pos, caret: Pos) -> Self {
+        Self { anchor, caret }
+    }
+    pub fn is_empty(&self) -> bool {
+        self.anchor == self.caret
+    }
+}
+
+/// Cursor: caret + (opcional) anchor cuando hay selección.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct Cursor {
+    pub caret: Pos,
+    pub anchor: Option<Pos>,
+    /// Columna "deseada" — preserva la posición horizontal al saltar
+    /// entre líneas de distinto largo. Se setea al mover horizontal
+    /// y se respeta al mover vertical.
+    pub desired_col: usize,
+}
+
+impl Default for Cursor {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl Cursor {
+    pub fn new() -> Self {
+        Self { caret: Pos::ORIGIN, anchor: None, desired_col: 0 }
+    }
+
+    pub fn at(line: usize, col: usize) -> Self {
+        Self { caret: Pos::new(line, col), anchor: None, desired_col: col }
+    }
+
+    pub fn selection(&self) -> Option<Selection> {
+        self.anchor.map(|a| Selection::new(a, self.caret))
+    }
+
+    pub fn has_selection(&self) -> bool {
+        self.anchor.map_or(false, |a| a != self.caret)
+    }
+
+    /// Rango efectivo `(start, end)` en `char_offset` global. Si no hay
+    /// selección, ambos son el caret.
+    pub fn selection_range(&self, buf: &Buffer) -> (usize, usize) {
+        let caret_off = buf.pos_to_offset(self.caret.line, self.caret.col);
+        match self.anchor {
+            None => (caret_off, caret_off),
+            Some(a) => {
+                let anchor_off = buf.pos_to_offset(a.line, a.col);
+                if anchor_off <= caret_off {
+                    (anchor_off, caret_off)
+                } else {
+                    (caret_off, anchor_off)
+                }
+            }
+        }
+    }
+
+    /// Colapsa la selección dejando el caret donde está.
+    pub fn collapse(&mut self) {
+        self.anchor = None;
+    }
+
+    /// Asegura que `anchor = caret` si `extending` es true y no había
+    /// anchor; si es false, colapsa.
+    pub fn set_extending(&mut self, extending: bool) {
+        match (extending, self.anchor) {
+            (true, None) => self.anchor = Some(self.caret),
+            (true, Some(_)) => {}
+            (false, _) => self.anchor = None,
+        }
+    }
+
+    // ----- Movimiento por chars -----
+
+    pub fn move_left(&mut self, buf: &Buffer, extending: bool) {
+        self.set_extending(extending);
+        if self.caret.col > 0 {
+            self.caret.col -= 1;
+        } else if self.caret.line > 0 {
+            self.caret.line -= 1;
+            self.caret.col = buf.line_len_chars(self.caret.line);
+        }
+        self.desired_col = self.caret.col;
+    }
+
+    pub fn move_right(&mut self, buf: &Buffer, extending: bool) {
+        self.set_extending(extending);
+        let line_len = buf.line_len_chars(self.caret.line);
+        if self.caret.col < line_len {
+            self.caret.col += 1;
+        } else if self.caret.line + 1 < buf.len_lines() {
+            self.caret.line += 1;
+            self.caret.col = 0;
+        }
+        self.desired_col = self.caret.col;
+    }
+
+    pub fn move_up(&mut self, buf: &Buffer, extending: bool) {
+        self.set_extending(extending);
+        if self.caret.line == 0 {
+            self.caret.col = 0;
+        } else {
+            self.caret.line -= 1;
+            self.caret.col = self.desired_col.min(buf.line_len_chars(self.caret.line));
+        }
+    }
+
+    pub fn move_down(&mut self, buf: &Buffer, extending: bool) {
+        self.set_extending(extending);
+        if self.caret.line + 1 >= buf.len_lines() {
+            self.caret.col = buf.line_len_chars(self.caret.line);
+        } else {
+            self.caret.line += 1;
+            self.caret.col = self.desired_col.min(buf.line_len_chars(self.caret.line));
+        }
+    }
+
+    pub fn move_home(&mut self, _buf: &Buffer, extending: bool) {
+        self.set_extending(extending);
+        // Atajo: ir al inicio del primer non-whitespace; segundo Home
+        // iría al 0 — por ahora siempre al 0.
+        self.caret.col = 0;
+        self.desired_col = 0;
+    }
+
+    pub fn move_end(&mut self, buf: &Buffer, extending: bool) {
+        self.set_extending(extending);
+        self.caret.col = buf.line_len_chars(self.caret.line);
+        self.desired_col = self.caret.col;
+    }
+
+    pub fn move_page_up(&mut self, buf: &Buffer, extending: bool, page: usize) {
+        self.set_extending(extending);
+        self.caret.line = self.caret.line.saturating_sub(page);
+        self.caret.col = self.desired_col.min(buf.line_len_chars(self.caret.line));
+    }
+
+    pub fn move_page_down(&mut self, buf: &Buffer, extending: bool, page: usize) {
+        self.set_extending(extending);
+        self.caret.line = (self.caret.line + page).min(buf.len_lines().saturating_sub(1));
+        self.caret.col = self.desired_col.min(buf.line_len_chars(self.caret.line));
+    }
+
+    pub fn move_doc_start(&mut self, _buf: &Buffer, extending: bool) {
+        self.set_extending(extending);
+        self.caret = Pos::ORIGIN;
+        self.desired_col = 0;
+    }
+
+    pub fn move_doc_end(&mut self, buf: &Buffer, extending: bool) {
+        self.set_extending(extending);
+        let last_line = buf.len_lines().saturating_sub(1);
+        self.caret = Pos::new(last_line, buf.line_len_chars(last_line));
+        self.desired_col = self.caret.col;
+    }
+
+    // ----- Word movement -----
+
+    /// Movimiento por palabra a la izquierda — salta whitespace, después
+    /// caracteres de palabra (alfanumérico + `_`).
+    pub fn move_word_left(&mut self, buf: &Buffer, extending: bool) {
+        self.set_extending(extending);
+        let mut off = buf.pos_to_offset(self.caret.line, self.caret.col);
+        while off > 0 && buf.char_at(off - 1).map_or(false, is_ws) {
+            off -= 1;
+        }
+        while off > 0 && buf.char_at(off - 1).map_or(false, is_word) {
+            off -= 1;
+        }
+        let (l, c) = buf.offset_to_pos(off);
+        self.caret = Pos::new(l, c);
+        self.desired_col = c;
+    }
+
+    pub fn move_word_right(&mut self, buf: &Buffer, extending: bool) {
+        self.set_extending(extending);
+        let len = buf.len_chars();
+        let mut off = buf.pos_to_offset(self.caret.line, self.caret.col);
+        while off < len && buf.char_at(off).map_or(false, is_word) {
+            off += 1;
+        }
+        while off < len && buf.char_at(off).map_or(false, is_ws) {
+            off += 1;
+        }
+        let (l, c) = buf.offset_to_pos(off);
+        self.caret = Pos::new(l, c);
+        self.desired_col = c;
+    }
+
+    // ----- Setters -----
+
+    pub fn set_caret(&mut self, buf: &Buffer, pos: Pos) {
+        let line = pos.line.min(buf.len_lines().saturating_sub(1));
+        let col = pos.col.min(buf.line_len_chars(line));
+        self.caret = Pos::new(line, col);
+        self.desired_col = col;
+        self.anchor = None;
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn buf() -> Buffer {
+        Buffer::from_str("hola\nmundo\nfin")
+    }
+
+    #[test]
+    fn cursor_new_is_origin() {
+        let c = Cursor::new();
+        assert_eq!(c.caret, Pos::ORIGIN);
+        assert!(!c.has_selection());
+    }
+
+    #[test]
+    fn move_right_atraviesa_lineas() {
+        let b = buf();
+        let mut c = Cursor::at(0, 4); // fin de "hola"
+        c.move_right(&b, false);
+        assert_eq!(c.caret, Pos::new(1, 0)); // inicio de "mundo"
+    }
+
+    #[test]
+    fn move_left_retrocede_a_linea_anterior() {
+        let b = buf();
+        let mut c = Cursor::at(1, 0);
+        c.move_left(&b, false);
+        assert_eq!(c.caret, Pos::new(0, 4));
+    }
+
+    #[test]
+    fn move_up_preserva_desired_col() {
+        let b = Buffer::from_str("abcdefgh\nxy\nlmnop");
+        let mut c = Cursor::at(0, 7);
+        c.move_down(&b, false);
+        // "xy" sólo tiene 2 chars; el cursor se pega a col=2
+        assert_eq!(c.caret, Pos::new(1, 2));
+        // pero al bajar de nuevo, el desired (7) reanima.
+        c.move_down(&b, false);
+        assert_eq!(c.caret, Pos::new(2, 5)); // "lmnop" tiene 5
+    }
+
+    #[test]
+    fn shift_arrow_inicia_seleccion() {
+        let b = buf();
+        let mut c = Cursor::at(0, 0);
+        c.move_right(&b, true);
+        c.move_right(&b, true);
+        assert!(c.has_selection());
+        let (s, e) = c.selection_range(&b);
+        assert_eq!((s, e), (0, 2));
+    }
+
+    #[test]
+    fn arrow_sin_shift_colapsa() {
+        let b = buf();
+        let mut c = Cursor::at(0, 0);
+        c.move_right(&b, true);
+        c.move_right(&b, true);
+        c.move_right(&b, false);
+        assert!(!c.has_selection());
+    }
+
+    #[test]
+    fn home_end_son_locales_a_la_linea() {
+        let b = buf();
+        let mut c = Cursor::at(1, 2);
+        c.move_home(&b, false);
+        assert_eq!(c.caret, Pos::new(1, 0));
+        c.move_end(&b, false);
+        assert_eq!(c.caret, Pos::new(1, 5));
+    }
+
+    #[test]
+    fn doc_start_y_end() {
+        let b = buf();
+        let mut c = Cursor::at(1, 2);
+        c.move_doc_end(&b, false);
+        assert_eq!(c.caret, Pos::new(2, 3));
+        c.move_doc_start(&b, false);
+        assert_eq!(c.caret, Pos::ORIGIN);
+    }
+}
diff --git a/widgets/text-editor-core/src/diagnostics.rs b/widgets/text-editor-core/src/diagnostics.rs
new file mode 100644
index 0000000..20c9441
--- /dev/null
+++ b/widgets/text-editor-core/src/diagnostics.rs
@@ -0,0 +1,78 @@
+//! Diagnósticos del editor — espejo minimal del shape de `lsp-types`
+//! sin depender del crate. Pensado para que un client LSP (rust-analyzer,
+//! pylsp, etc.) lo poble desde fuera; el render del editor los pinta
+//! como subrayado bajo el rango.
+//!
+//! El client real vive aparte (proceso + JSON-RPC) — este módulo sólo
+//! define el shape de los datos y el helper para renderizarlos.
+
+use crate::cursor::Pos;
+
+/// Severidad — mismos valores y orden que en LSP (1 = Error es el más alto).
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Severity {
+    Error,
+    Warning,
+    Information,
+    Hint,
+}
+
+/// Rango cerrado de un diagnostic. `end` exclusivo en `col`.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct DiagnosticRange {
+    pub start: Pos,
+    pub end: Pos,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct Diagnostic {
+    pub range: DiagnosticRange,
+    pub severity: Severity,
+    /// Mensaje humano corto — el render lo trunca para mostrar al hover/
+    /// en una mini popup futura. En esta versión solo se usa el rango.
+    pub message: String,
+    /// Source del diagnostic — "rust-analyzer", "pylsp", "clippy", etc.
+    /// `None` si no se conoce.
+    pub source: Option<String>,
+}
+
+impl Diagnostic {
+    pub fn error(line_start: usize, col_start: usize, line_end: usize, col_end: usize, message: impl Into<String>) -> Self {
+        Self {
+            range: DiagnosticRange {
+                start: Pos::new(line_start, col_start),
+                end: Pos::new(line_end, col_end),
+            },
+            severity: Severity::Error,
+            message: message.into(),
+            source: None,
+        }
+    }
+    pub fn warning(line_start: usize, col_start: usize, line_end: usize, col_end: usize, message: impl Into<String>) -> Self {
+        Self {
+            range: DiagnosticRange {
+                start: Pos::new(line_start, col_start),
+                end: Pos::new(line_end, col_end),
+            },
+            severity: Severity::Warning,
+            message: message.into(),
+            source: None,
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn constructors_funcionan() {
+        let e = Diagnostic::error(1, 2, 1, 5, "boom");
+        assert_eq!(e.severity, Severity::Error);
+        assert_eq!(e.range.start, Pos::new(1, 2));
+        assert_eq!(e.range.end, Pos::new(1, 5));
+
+        let w = Diagnostic::warning(0, 0, 0, 10, "ojo");
+        assert_eq!(w.severity, Severity::Warning);
+    }
+}
diff --git a/widgets/text-editor-core/src/find.rs b/widgets/text-editor-core/src/find.rs
new file mode 100644
index 0000000..5a97d00
--- /dev/null
+++ b/widgets/text-editor-core/src/find.rs
@@ -0,0 +1,168 @@
+//! Búsqueda en el buffer. PMV: case-insensitive opcional, sin regex,
+//! sin replace. La UI del prompt vive en el caller (típicamente una
+//! barra arriba del editor); este módulo sólo provee:
+//!
+//! - [`FindState`] con el query actual + dirección + flag case-sensitive.
+//! - [`find_next`] / [`find_prev`] que devuelven la próxima/anterior
+//!   match desde el caret del editor.
+//! - [`all_matches`] para que el render resalte cada ocurrencia.
+
+use crate::buffer::Buffer;
+use crate::cursor::{Cursor, Pos};
+
+/// Configuración de búsqueda del editor.
+#[derive(Debug, Clone, Default)]
+pub struct FindState {
+    pub query: String,
+    pub case_sensitive: bool,
+}
+
+impl FindState {
+    pub fn new() -> Self {
+        Self::default()
+    }
+    pub fn with_query(query: impl Into<String>) -> Self {
+        Self { query: query.into(), case_sensitive: false }
+    }
+    pub fn is_active(&self) -> bool {
+        !self.query.is_empty()
+    }
+}
+
+/// Devuelve todas las ocurrencias del query en el buffer como
+/// `(start_offset, end_offset)` en char offsets. Vacío si query vacío.
+pub fn all_matches(buf: &Buffer, find: &FindState) -> Vec<(usize, usize)> {
+    if find.query.is_empty() {
+        return Vec::new();
+    }
+    let hay = buf.text();
+    let (hay_search, needle_search) = if find.case_sensitive {
+        (hay.clone(), find.query.clone())
+    } else {
+        (hay.to_lowercase(), find.query.to_lowercase())
+    };
+
+    // Buscamos en bytes; convertimos a char_offsets al devolver.
+    let mut out: Vec<(usize, usize)> = Vec::new();
+    let mut byte_start = 0;
+    while let Some(pos) = hay_search[byte_start..].find(&needle_search) {
+        let byte_match = byte_start + pos;
+        let char_start = hay[..byte_match].chars().count();
+        let char_end = char_start + find.query.chars().count();
+        out.push((char_start, char_end));
+        byte_start = byte_match + needle_search.len().max(1);
+    }
+    out
+}
+
+/// Encuentra la próxima ocurrencia con `start >= caret_off` (la match
+/// **en** el caret cuenta, no la saltea). Para avanzar a la siguiente
+/// real, el caller mueve el caret al `end` de la match anterior y
+/// vuelve a llamar. Wrap-around al fin del buffer → primera match.
+pub fn find_next(buf: &Buffer, find: &FindState, cursor: &Cursor) -> Option<(Pos, Pos)> {
+    let matches = all_matches(buf, find);
+    if matches.is_empty() {
+        return None;
+    }
+    let caret_off = buf.pos_to_offset(cursor.caret.line, cursor.caret.col);
+    let next = matches
+        .iter()
+        .find(|(s, _)| *s >= caret_off)
+        .copied()
+        .or_else(|| matches.first().copied())?;
+    Some(positions_of(buf, next))
+}
+
+/// Como [`find_next`] pero en reverso.
+pub fn find_prev(buf: &Buffer, find: &FindState, cursor: &Cursor) -> Option<(Pos, Pos)> {
+    let matches = all_matches(buf, find);
+    if matches.is_empty() {
+        return None;
+    }
+    let caret_off = buf.pos_to_offset(cursor.caret.line, cursor.caret.col);
+    let prev = matches
+        .iter()
+        .rev()
+        .find(|(_, e)| *e < caret_off)
+        .copied()
+        .or_else(|| matches.last().copied())?;
+    Some(positions_of(buf, prev))
+}
+
+fn positions_of(buf: &Buffer, (start, end): (usize, usize)) -> (Pos, Pos) {
+    let (sl, sc) = buf.offset_to_pos(start);
+    let (el, ec) = buf.offset_to_pos(end);
+    (Pos::new(sl, sc), Pos::new(el, ec))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn all_matches_vacio_devuelve_vacio() {
+        let b = Buffer::from_str("hola hola");
+        let f = FindState::new();
+        assert!(all_matches(&b, &f).is_empty());
+    }
+
+    #[test]
+    fn all_matches_encuentra_todas() {
+        let b = Buffer::from_str("ab cd ab ef ab");
+        let f = FindState::with_query("ab");
+        let m = all_matches(&b, &f);
+        assert_eq!(m, vec![(0, 2), (6, 8), (12, 14)]);
+    }
+
+    #[test]
+    fn case_insensitive_por_default() {
+        let b = Buffer::from_str("Hola HOLA hola");
+        let f = FindState::with_query("hola");
+        assert_eq!(all_matches(&b, &f).len(), 3);
+    }
+
+    #[test]
+    fn case_sensitive_filtra() {
+        let b = Buffer::from_str("Hola HOLA hola");
+        let f = FindState { query: "hola".into(), case_sensitive: true };
+        assert_eq!(all_matches(&b, &f).len(), 1);
+    }
+
+    #[test]
+    fn find_next_wrap_al_final() {
+        let b = Buffer::from_str("ab cd ab");
+        let f = FindState::with_query("ab");
+        let c = Cursor::at(0, 8); // al final
+        let (a, _) = find_next(&b, &f, &c).unwrap();
+        assert_eq!(a, Pos::new(0, 0)); // wrap al primero
+    }
+
+    #[test]
+    fn find_prev_wrap_al_principio() {
+        let b = Buffer::from_str("ab cd ab");
+        let f = FindState::with_query("ab");
+        let c = Cursor::at(0, 0);
+        let (a, _) = find_prev(&b, &f, &c).unwrap();
+        assert_eq!(a, Pos::new(0, 6)); // wrap al último
+    }
+
+    #[test]
+    fn find_next_devuelve_match_en_el_caret() {
+        let b = Buffer::from_str("ab ab ab");
+        let f = FindState::with_query("ab");
+        let c = Cursor::at(0, 0);
+        let (a, _) = find_next(&b, &f, &c).unwrap();
+        assert_eq!(a, Pos::new(0, 0));
+    }
+
+    #[test]
+    fn find_next_avanza_si_caret_va_al_fin_de_match_anterior() {
+        let b = Buffer::from_str("ab ab ab");
+        let f = FindState::with_query("ab");
+        let mut c = Cursor::at(0, 0);
+        let (_, end1) = find_next(&b, &f, &c).unwrap();
+        c.caret = end1; // (0, 2) — fin de la primera
+        let (a2, _) = find_next(&b, &f, &c).unwrap();
+        assert_eq!(a2, Pos::new(0, 3));
+    }
+}
diff --git a/widgets/text-editor-core/src/highlight.rs b/widgets/text-editor-core/src/highlight.rs
new file mode 100644
index 0000000..57b58f2
--- /dev/null
+++ b/widgets/text-editor-core/src/highlight.rs
@@ -0,0 +1,590 @@
+//! Syntax highlighting. Cada `Language` produce una `Vec<LineSpans>`:
+//! por línea, una secuencia ordenada de `(start_col, end_col, TokenKind)`
+//! que cubre toda la línea. El renderer pinta cada span con el color
+//! que el [`SyntaxPalette`] mapea desde el `TokenKind`.
+//!
+//! - **Rust / Python**: tree-sitter parseando el buffer entero (ineficiente
+//!   pero adecuado para celdas de notebook ≤ ~1k LOC). Las queries se
+//!   compilan una vez por `Language`.
+//! - **WAT**: tokenizer en Rust puro (LISP-like: paren, `$`-prefijo,
+//!   strings, números, keywords típicos del subset MVP).
+//! - **Plain**: un solo span por línea con `TokenKind::Other`.
+
+use peniko::Color;
+
+/// Lenguajes soportados — la matriz se extiende sumando un variant +
+/// una rama en [`Highlighter::tokenize_line`].
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum Language {
+    Plain,
+    Rust,
+    Python,
+    Wat,
+}
+
+impl Language {
+    /// Heurística: derivar el `Language` del `language` del `CellKind`.
+    pub fn from_cell_language(s: &str) -> Self {
+        match s.to_ascii_lowercase().as_str() {
+            "rust" | "rs" => Language::Rust,
+            "python" | "py" => Language::Python,
+            "wasm" | "wat" => Language::Wat,
+            _ => Language::Plain,
+        }
+    }
+}
+
+/// Categorías de token — lo suficientemente granular para colores
+/// distintos sin saturar el theme.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum TokenKind {
+    Keyword,
+    Type,
+    Function,
+    String,
+    Number,
+    Comment,
+    Operator,
+    Punctuation,
+    Identifier,
+    Other,
+}
+
+/// Un span dentro de una línea: `[start_col..end_col)` de la línea,
+/// más su categoría.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct Span {
+    pub start_col: usize,
+    pub end_col: usize,
+    pub kind: TokenKind,
+}
+
+/// Paleta de colores por categoría — el theme la deriva.
+#[derive(Debug, Clone, Copy)]
+pub struct SyntaxPalette {
+    pub keyword: Color,
+    pub typ: Color,
+    pub function: Color,
+    pub string: Color,
+    pub number: Color,
+    pub comment: Color,
+    pub operator: Color,
+    pub punctuation: Color,
+    pub identifier: Color,
+    pub other: Color,
+}
+
+impl SyntaxPalette {
+    pub fn color(&self, k: TokenKind) -> Color {
+        match k {
+            TokenKind::Keyword => self.keyword,
+            TokenKind::Type => self.typ,
+            TokenKind::Function => self.function,
+            TokenKind::String => self.string,
+            TokenKind::Number => self.number,
+            TokenKind::Comment => self.comment,
+            TokenKind::Operator => self.operator,
+            TokenKind::Punctuation => self.punctuation,
+            TokenKind::Identifier => self.identifier,
+            TokenKind::Other => self.other,
+        }
+    }
+}
+
+// El constructor `dark_default(theme)` — única pieza que dependía de
+// `llimphi_theme` — vive ahora en `llimphi-widget-text-editor`
+// (`syntax_palette_dark`), para que este núcleo no arrastre el stack de
+// render. Aquí queda sólo el modelo de color puro (peniko::Color).
+
+// Pool thread-local de parsers tree-sitter. Reconstruir el parser
+// (con `set_language`) es caro; reusarlo entre highlights del mismo
+// lenguaje es un ahorro grande. `tree_sitter::Parser` no es Send/
+// Sync ni Clone, así que vive en thread-local — un parser por
+// lenguaje por thread.
+thread_local! {
+    static PARSER_POOL: std::cell::RefCell<std::collections::HashMap<Language, tree_sitter::Parser>>
+        = std::cell::RefCell::new(std::collections::HashMap::new());
+    /// Cache del último árbol parseado por lenguaje. Se pasa como hint
+    /// al siguiente `parse(source, Some(&old_tree))`. El "verdadero
+    /// incremental" (aplicar `InputEdit`s al tree antes de reparsear)
+    /// ya está cableado: `EditorState` acumula los edits por delta y
+    /// llama a [`apply_pending_edits`] antes de cada highlight, de modo
+    /// que tree-sitter sólo reconstruye los subtrees afectados.
+    static TREE_CACHE: std::cell::RefCell<std::collections::HashMap<Language, tree_sitter::Tree>>
+        = std::cell::RefCell::new(std::collections::HashMap::new());
+}
+
+/// Invalida el árbol cached para `language` — el caller lo invoca al
+/// hacer `set_text` o cambios masivos donde el hint puede confundir
+/// más que ayudar. No es estrictamente necesario, pero es defensivo.
+pub fn invalidate_tree_cache(language: Language) {
+    TREE_CACHE.with(|c| {
+        c.borrow_mut().remove(&language);
+    });
+}
+
+/// Aplica una lista de `InputEdit` al tree cached del `language`.
+/// Llamarlo ANTES de `parse(source, Some(&old_tree))` activa el modo
+/// incremental real de tree-sitter — solo reconstruye los subtrees
+/// afectados por las edits.
+pub fn apply_pending_edits(language: Language, edits: &[tree_sitter::InputEdit]) {
+    if edits.is_empty() {
+        return;
+    }
+    TREE_CACHE.with(|c| {
+        let mut c = c.borrow_mut();
+        if let Some(tree) = c.get_mut(&language) {
+            for e in edits {
+                tree.edit(e);
+            }
+        }
+    });
+}
+
+/// Highlighter — fina capa sin estado mutable propio. La parser real
+/// vive en el pool thread-local.
+pub struct Highlighter {
+    language: Language,
+}
+
+impl Highlighter {
+    pub fn new(language: Language) -> Self {
+        Self { language }
+    }
+
+    pub fn language(&self) -> Language {
+        self.language
+    }
+
+    pub fn set_language(&mut self, language: Language) {
+        self.language = language;
+    }
+
+    /// Tokeniza el `source` entero y devuelve los spans por línea.
+    /// `result.len() == source.lines().count().max(1)`.
+    pub fn highlight(&mut self, source: &str) -> Vec<Vec<Span>> {
+        match self.language {
+            Language::Plain => plain_lines(source),
+            Language::Wat => highlight_wat(source),
+            Language::Rust => self.highlight_treesitter(source, rust_kind),
+            Language::Python => self.highlight_treesitter(source, python_kind),
+        }
+    }
+
+    fn highlight_treesitter(
+        &mut self,
+        source: &str,
+        kind_of: fn(&str) -> Option<TokenKind>,
+    ) -> Vec<Vec<Span>> {
+        let language = self.language;
+        // Parsea con hint del tree previo si lo hay. tree-sitter puede
+        // reusar subtrees por hash incluso sin InputEdits aplicados.
+        let tree_opt = PARSER_POOL.with(|pool| {
+            let mut pool = pool.borrow_mut();
+            let parser = pool.entry(language).or_insert_with(|| {
+                make_ts_parser(language).unwrap_or_else(tree_sitter::Parser::new)
+            });
+            let old = TREE_CACHE.with(|c| c.borrow().get(&language).cloned());
+            parser.parse(source, old.as_ref())
+        });
+        let Some(tree) = tree_opt else {
+            return plain_lines(source);
+        };
+        // Guarda el nuevo árbol para la próxima invocación.
+        TREE_CACHE.with(|c| {
+            c.borrow_mut().insert(language, tree.clone());
+        });
+
+        // Por línea: recopilamos spans de los nodos *named* tipados que
+        // matchean kind_of. Luego rellenamos los huecos con `Other`.
+        let line_count = source.lines().count().max(1)
+            + (if source.ends_with('\n') { 1 } else { 0 });
+        let mut per_line: Vec<Vec<Span>> = vec![Vec::new(); line_count.max(1)];
+
+        let mut stack: Vec<tree_sitter::Node> = vec![tree.root_node()];
+        while let Some(node) = stack.pop() {
+            if node.child_count() == 0 {
+                // hoja: tomamos el tipo del nodo (token).
+                let kind = node.kind();
+                if let Some(tk) = kind_of(kind) {
+                    let start = node.start_position();
+                    let end = node.end_position();
+                    // Sólo manejamos tokens single-line (los multi-line
+                    // como block strings se splitean por línea).
+                    if start.row == end.row {
+                        if let Some(line) = per_line.get_mut(start.row) {
+                            line.push(Span {
+                                start_col: start.column,
+                                end_col: end.column,
+                                kind: tk,
+                            });
+                        }
+                    } else {
+                        // Multi-line: marca cada línea entera como ese kind.
+                        // Aproximación; suficiente para strings multi-línea.
+                        for row in start.row..=end.row {
+                            if let Some(line) = per_line.get_mut(row) {
+                                let line_text =
+                                    source.lines().nth(row).unwrap_or("");
+                                let s = if row == start.row { start.column } else { 0 };
+                                let e =
+                                    if row == end.row { end.column } else { line_text.chars().count() };
+                                line.push(Span { start_col: s, end_col: e, kind: tk });
+                            }
+                        }
+                    }
+                }
+            } else {
+                for i in (0..node.child_count()).rev() {
+                    if let Some(c) = node.child(i) {
+                        stack.push(c);
+                    }
+                }
+            }
+        }
+
+        // Por cada línea: ordena, fusiona overlapping, rellena huecos.
+        let mut result: Vec<Vec<Span>> = Vec::with_capacity(per_line.len());
+        for (row, mut spans) in per_line.into_iter().enumerate() {
+            let line_text = source.lines().nth(row).unwrap_or("");
+            spans.sort_by_key(|s| s.start_col);
+            result.push(fill_gaps(spans, line_text.chars().count()));
+        }
+        result
+    }
+}
+
+fn make_ts_parser(language: Language) -> Option<tree_sitter::Parser> {
+    let mut parser = tree_sitter::Parser::new();
+    let lang: tree_sitter::Language = match language {
+        Language::Rust => tree_sitter_rust::LANGUAGE.into(),
+        Language::Python => tree_sitter_python::LANGUAGE.into(),
+        _ => return None,
+    };
+    parser.set_language(&lang).ok()?;
+    Some(parser)
+}
+
+/// Mapeo de tree-sitter node `kind` → TokenKind para Rust.
+fn rust_kind(kind: &str) -> Option<TokenKind> {
+    // Lista deliberadamente acotada al subset común; nodos no listados
+    // caen como Identifier/Other vía fill_gaps.
+    match kind {
+        // Keywords
+        "fn" | "let" | "mut" | "const" | "static" | "if" | "else" | "match"
+        | "for" | "while" | "loop" | "break" | "continue" | "return" | "use"
+        | "mod" | "pub" | "impl" | "trait" | "struct" | "enum" | "type"
+        | "where" | "as" | "in" | "ref" | "move" | "self" | "Self" | "crate"
+        | "super" | "async" | "await" | "dyn" | "unsafe" | "extern" => {
+            Some(TokenKind::Keyword)
+        }
+        // Tipos primitivos
+        "primitive_type" => Some(TokenKind::Type),
+        // Literales
+        "string_literal" | "raw_string_literal" | "char_literal" | "string_content" => {
+            Some(TokenKind::String)
+        }
+        "integer_literal" | "float_literal" | "boolean_literal" => Some(TokenKind::Number),
+        // Comentarios
+        "line_comment" | "block_comment" => Some(TokenKind::Comment),
+        _ => None,
+    }
+}
+
+/// Mapeo para Python.
+fn python_kind(kind: &str) -> Option<TokenKind> {
+    match kind {
+        "def" | "class" | "if" | "elif" | "else" | "for" | "while" | "return"
+        | "import" | "from" | "as" | "in" | "is" | "not" | "and" | "or"
+        | "with" | "try" | "except" | "finally" | "raise" | "yield" | "pass"
+        | "break" | "continue" | "global" | "nonlocal" | "lambda" | "True"
+        | "False" | "None" | "async" | "await" => Some(TokenKind::Keyword),
+        "string" | "string_start" | "string_content" | "string_end" => Some(TokenKind::String),
+        "integer" | "float" | "true" | "false" | "none" => Some(TokenKind::Number),
+        "comment" => Some(TokenKind::Comment),
+        _ => None,
+    }
+}
+
+// ---------------------------------------------------------------------
+// WAT — tokenizer en Rust puro (sin tree-sitter).
+// ---------------------------------------------------------------------
+
+fn highlight_wat(source: &str) -> Vec<Vec<Span>> {
+    let mut out: Vec<Vec<Span>> = Vec::new();
+    for line in iterate_lines(source) {
+        out.push(tokenize_wat_line(line));
+    }
+    out
+}
+
+fn iterate_lines(source: &str) -> Vec<&str> {
+    let mut out: Vec<&str> = source.lines().collect();
+    if source.ends_with('\n') || source.is_empty() {
+        out.push("");
+    }
+    if out.is_empty() {
+        out.push("");
+    }
+    out
+}
+
+fn tokenize_wat_line(line: &str) -> Vec<Span> {
+    let mut out: Vec<Span> = Vec::new();
+    let chars: Vec<char> = line.chars().collect();
+    let len = chars.len();
+    let mut i = 0usize;
+
+    while i < len {
+        let c = chars[i];
+
+        if c.is_whitespace() {
+            let start = i;
+            while i < len && chars[i].is_whitespace() {
+                i += 1;
+            }
+            out.push(Span { start_col: start, end_col: i, kind: TokenKind::Other });
+            continue;
+        }
+
+        // Comentario línea `;; ...`
+        if c == ';' && i + 1 < len && chars[i + 1] == ';' {
+            out.push(Span { start_col: i, end_col: len, kind: TokenKind::Comment });
+            break;
+        }
+
+        // Paren
+        if c == '(' || c == ')' {
+            out.push(Span { start_col: i, end_col: i + 1, kind: TokenKind::Punctuation });
+            i += 1;
+            continue;
+        }
+
+        // String "..."
+        if c == '"' {
+            let start = i;
+            i += 1;
+            while i < len {
+                let cc = chars[i];
+                if cc == '\\' && i + 1 < len {
+                    i += 2;
+                    continue;
+                }
+                if cc == '"' {
+                    i += 1;
+                    break;
+                }
+                i += 1;
+            }
+            out.push(Span { start_col: start, end_col: i, kind: TokenKind::String });
+            continue;
+        }
+
+        // Identificador `$nombre`
+        if c == '$' {
+            let start = i;
+            i += 1;
+            while i < len && is_wat_ident_char(chars[i]) {
+                i += 1;
+            }
+            out.push(Span { start_col: start, end_col: i, kind: TokenKind::Identifier });
+            continue;
+        }
+
+        // Número (entero/hex/float — simplificado: empieza con dígito o -dígito).
+        if c.is_ascii_digit() || (c == '-' && i + 1 < len && chars[i + 1].is_ascii_digit()) {
+            let start = i;
+            if c == '-' {
+                i += 1;
+            }
+            while i < len {
+                let cc = chars[i];
+                if cc.is_ascii_digit() || cc == '.' || cc == 'x' || cc.is_ascii_hexdigit() {
+                    i += 1;
+                } else {
+                    break;
+                }
+            }
+            out.push(Span { start_col: start, end_col: i, kind: TokenKind::Number });
+            continue;
+        }
+
+        // Word: keyword o identificador
+        if is_wat_word_start(c) {
+            let start = i;
+            while i < len && is_wat_ident_char(chars[i]) {
+                i += 1;
+            }
+            let word: String = chars[start..i].iter().collect();
+            let kind = wat_word_kind(&word);
+            out.push(Span { start_col: start, end_col: i, kind });
+            continue;
+        }
+
+        // Otros (operadores como `.`)
+        out.push(Span { start_col: i, end_col: i + 1, kind: TokenKind::Operator });
+        i += 1;
+    }
+
+    fill_gaps(out, len)
+}
+
+fn is_wat_word_start(c: char) -> bool {
+    c.is_ascii_alphabetic() || c == '_'
+}
+fn is_wat_ident_char(c: char) -> bool {
+    c.is_ascii_alphanumeric() || matches!(c, '_' | '.' | '!' | '#' | '$' | '%' | '&' | '\'' | '*' | '+' | '-' | '/' | ':' | '<' | '=' | '>' | '?' | '@' | '\\' | '^' | '`' | '|' | '~')
+}
+
+fn wat_word_kind(w: &str) -> TokenKind {
+    const KEYWORDS: &[&str] = &[
+        "module", "func", "param", "result", "local", "import", "export",
+        "memory", "data", "table", "elem", "type", "global", "start", "block",
+        "loop", "if", "then", "else", "end", "br", "br_if", "br_table",
+        "return", "call", "call_indirect",
+    ];
+    const TYPES: &[&str] = &["i32", "i64", "f32", "f64", "v128", "funcref", "externref", "anyref"];
+
+    if KEYWORDS.contains(&w) {
+        TokenKind::Keyword
+    } else if TYPES.contains(&w) {
+        TokenKind::Type
+    } else if w.contains('.') {
+        // Instrucciones tipo `i32.const`, `local.get`, etc.
+        TokenKind::Function
+    } else {
+        TokenKind::Identifier
+    }
+}
+
+// ---------------------------------------------------------------------
+// Plain + utilities
+// ---------------------------------------------------------------------
+
+fn plain_lines(source: &str) -> Vec<Vec<Span>> {
+    let mut out: Vec<Vec<Span>> = Vec::new();
+    for line in iterate_lines(source) {
+        let len = line.chars().count();
+        out.push(vec![Span { start_col: 0, end_col: len, kind: TokenKind::Other }]);
+    }
+    out
+}
+
+/// Rellena los huecos entre spans con `Other` para cubrir `[0..line_len)`.
+fn fill_gaps(spans: Vec<Span>, line_len: usize) -> Vec<Span> {
+    if spans.is_empty() {
+        return vec![Span { start_col: 0, end_col: line_len, kind: TokenKind::Other }];
+    }
+    let mut out: Vec<Span> = Vec::with_capacity(spans.len() * 2);
+    let mut cursor = 0usize;
+    for s in spans {
+        if s.start_col > cursor {
+            out.push(Span { start_col: cursor, end_col: s.start_col, kind: TokenKind::Other });
+        }
+        // Clampea overlaps con el anterior.
+        if s.end_col > cursor {
+            let start_col = s.start_col.max(cursor);
+            out.push(Span { start_col, end_col: s.end_col, kind: s.kind });
+            cursor = s.end_col;
+        }
+    }
+    if cursor < line_len {
+        out.push(Span { start_col: cursor, end_col: line_len, kind: TokenKind::Other });
+    }
+    out
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn plain_devuelve_un_span_por_linea() {
+        let mut h = Highlighter::new(Language::Plain);
+        let r = h.highlight("hola\nmundo");
+        assert_eq!(r.len(), 2);
+        assert_eq!(r[0].len(), 1);
+        assert_eq!(r[0][0].kind, TokenKind::Other);
+    }
+
+    #[test]
+    fn wat_paren_es_punctuation() {
+        let mut h = Highlighter::new(Language::Wat);
+        let r = h.highlight("(module)");
+        let line = &r[0];
+        let paren = line.iter().find(|s| s.kind == TokenKind::Punctuation).unwrap();
+        assert_eq!(paren.start_col, 0);
+        assert_eq!(paren.end_col, 1);
+    }
+
+    #[test]
+    fn wat_keyword_module_clasifica_como_keyword() {
+        let mut h = Highlighter::new(Language::Wat);
+        let r = h.highlight("(module)");
+        let kw = r[0].iter().find(|s| s.kind == TokenKind::Keyword).unwrap();
+        assert_eq!(kw.start_col, 1);
+        assert_eq!(kw.end_col, 7);
+    }
+
+    #[test]
+    fn wat_tipo_i32_es_type() {
+        let mut h = Highlighter::new(Language::Wat);
+        let r = h.highlight("(result i32)");
+        assert!(r[0].iter().any(|s| s.kind == TokenKind::Type));
+    }
+
+    #[test]
+    fn wat_string_y_comment() {
+        let mut h = Highlighter::new(Language::Wat);
+        let r = h.highlight(r#"(data "hola") ;; comentario"#);
+        assert!(r[0].iter().any(|s| s.kind == TokenKind::String));
+        assert!(r[0].iter().any(|s| s.kind == TokenKind::Comment));
+    }
+
+    #[test]
+    fn wat_instruction_dotted_es_function() {
+        let mut h = Highlighter::new(Language::Wat);
+        let r = h.highlight("i32.const 42");
+        assert!(r[0].iter().any(|s| s.kind == TokenKind::Function));
+        assert!(r[0].iter().any(|s| s.kind == TokenKind::Number));
+    }
+
+    #[test]
+    fn rust_keyword_fn() {
+        let mut h = Highlighter::new(Language::Rust);
+        let r = h.highlight("fn main() {}");
+        // El span de "fn" debe estar marcado como keyword.
+        assert!(r[0].iter().any(|s| s.kind == TokenKind::Keyword));
+    }
+
+    #[test]
+    fn python_keyword_def() {
+        let mut h = Highlighter::new(Language::Python);
+        let r = h.highlight("def f():\n    return 1");
+        assert!(r[0].iter().any(|s| s.kind == TokenKind::Keyword));
+        // "return" en la línea 2.
+        assert!(r[1].iter().any(|s| s.kind == TokenKind::Keyword));
+    }
+
+    #[test]
+    fn fill_gaps_rellena_y_clampea() {
+        let spans = vec![
+            Span { start_col: 2, end_col: 4, kind: TokenKind::Keyword },
+            Span { start_col: 6, end_col: 9, kind: TokenKind::String },
+        ];
+        let filled = fill_gaps(spans, 10);
+        // [Other 0..2] [Keyword 2..4] [Other 4..6] [String 6..9] [Other 9..10]
+        assert_eq!(filled.len(), 5);
+        assert_eq!(filled[0].kind, TokenKind::Other);
+        assert_eq!(filled[4].kind, TokenKind::Other);
+    }
+
+    #[test]
+    fn from_cell_language_mapea_aliases() {
+        assert_eq!(Language::from_cell_language("rust"), Language::Rust);
+        assert_eq!(Language::from_cell_language("rs"), Language::Rust);
+        assert_eq!(Language::from_cell_language("py"), Language::Python);
+        assert_eq!(Language::from_cell_language("wat"), Language::Wat);
+        assert_eq!(Language::from_cell_language("desconocido"), Language::Plain);
+    }
+}
diff --git a/widgets/text-editor-core/src/lib.rs b/widgets/text-editor-core/src/lib.rs
new file mode 100644
index 0000000..d28fb8c
--- /dev/null
+++ b/widgets/text-editor-core/src/lib.rs
@@ -0,0 +1,40 @@
+//! `llimphi-widget-text-editor-core` — núcleo agnóstico del editor de código.
+//!
+//! Capas finas y **puras** (sin IO, sin Llimphi, sin GPU) sobre [`ropey`]:
+//!
+//! - [`buffer`] — wrapper de `Rope` con conversiones (línea, col) ↔ char_offset.
+//! - [`cursor`] — `Cursor` + `Selection`; movimiento por char/word/line/page.
+//! - [`ops`] — operaciones puras de edición sobre `(Buffer, Cursor) → (Buffer, Cursor)`.
+//! - [`undo`] — pila reversible: cada operación se registra como `EditDelta`.
+//! - [`bracket`] — matching de paréntesis/llaves/corchetes.
+//! - [`find`] — búsqueda incremental sobre el buffer.
+//! - [`diagnostics`] — modelo de diagnósticos (errores/warnings) por rango.
+//! - [`clipboard`] — abstracción de portapapeles (mem/null) sin tocar el SO.
+//! - [`highlight`] — syntax highlighting con tree-sitter (Rust/Python/WAT/Plain).
+//!
+//! Único acoplamiento externo: [`peniko::Color`] en [`highlight::SyntaxPalette`]
+//! — un tipo de color, no el stack de render. Eso deja el núcleo reutilizable
+//! desde un TUI, una mini-REPL, un text-input single-line, un backend web, etc.
+//! La capa visual (state + view sobre Llimphi) vive en
+//! `llimphi-widget-text-editor`, que re-exporta todo este núcleo.
+
+#![forbid(unsafe_code)]
+
+pub mod bracket;
+pub mod buffer;
+pub mod clipboard;
+pub mod cursor;
+pub mod diagnostics;
+pub mod find;
+pub mod highlight;
+pub mod ops;
+pub mod undo;
+
+pub use buffer::Buffer;
+pub use clipboard::{Clipboard, MemClipboard, NullClipboard};
+pub use cursor::{Cursor, Pos, Selection};
+pub use diagnostics::{Diagnostic, DiagnosticRange, Severity};
+pub use find::{all_matches, find_next, find_prev, FindState};
+pub use highlight::{Highlighter, Language, Span, SyntaxPalette, TokenKind};
+pub use ops::{indent_str, EditDelta};
+pub use undo::UndoStack;
diff --git a/widgets/text-editor-core/src/ops.rs b/widgets/text-editor-core/src/ops.rs
new file mode 100644
index 0000000..0381d17
--- /dev/null
+++ b/widgets/text-editor-core/src/ops.rs
@@ -0,0 +1,384 @@
+//! Operaciones de edición. Cada una toma `&mut Buffer + &mut Cursor` y
+//! devuelve un [`EditDelta`] reversible que la pila de undo guarda.
+//!
+//! El delta es minimal: el rango `[start..end)` que se reemplazó + el
+//! texto que estaba antes + el texto nuevo. Aplicado en reversa,
+//! restaura el estado anterior exactamente.
+
+use crate::buffer::Buffer;
+use crate::cursor::{Cursor, Pos};
+
+/// Delta atómico de edición — útil para undo/redo y log de cambios.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct EditDelta {
+    pub start: usize,
+    pub removed: String,
+    pub inserted: String,
+    /// Caret antes de la operación (para restaurarlo en undo).
+    pub cursor_before: Cursor,
+    /// Caret después de la operación.
+    pub cursor_after: Cursor,
+}
+
+impl EditDelta {
+    /// Aplica el delta a `(buf, cursor)`.
+    pub fn apply(&self, buf: &mut Buffer, cursor: &mut Cursor) {
+        let end = self.start + self.removed.chars().count();
+        buf.delete(self.start, end);
+        if !self.inserted.is_empty() {
+            buf.insert(self.start, &self.inserted);
+        }
+        *cursor = self.cursor_after;
+    }
+
+    /// Aplica el inverso (undo).
+    pub fn undo(&self, buf: &mut Buffer, cursor: &mut Cursor) {
+        let end = self.start + self.inserted.chars().count();
+        buf.delete(self.start, end);
+        if !self.removed.is_empty() {
+            buf.insert(self.start, &self.removed);
+        }
+        *cursor = self.cursor_before;
+    }
+}
+
+/// Genera la string de indentación según la config.
+pub fn indent_str(tab_to_spaces: bool, indent_size: usize) -> String {
+    if tab_to_spaces {
+        " ".repeat(indent_size)
+    } else {
+        "\t".to_string()
+    }
+}
+
+/// Reemplaza la selección activa por `text`. Si no hay selección,
+/// inserta `text` en el caret. Devuelve el delta resultante.
+pub fn replace_selection(
+    buf: &mut Buffer,
+    cursor: &mut Cursor,
+    text: &str,
+) -> EditDelta {
+    let before = *cursor;
+    let (start, end) = cursor.selection_range(buf);
+    let removed = buf.slice(start, end);
+
+    if start != end {
+        buf.delete(start, end);
+    }
+    if !text.is_empty() {
+        buf.insert(start, text);
+    }
+
+    let new_off = start + text.chars().count();
+    let (line, col) = buf.offset_to_pos(new_off);
+    cursor.caret = Pos::new(line, col);
+    cursor.desired_col = col;
+    cursor.anchor = None;
+
+    EditDelta {
+        start,
+        removed,
+        inserted: text.to_string(),
+        cursor_before: before,
+        cursor_after: *cursor,
+    }
+}
+
+/// Borra hacia atrás (Backspace). Si hay selección, la borra; si no,
+/// borra el char antes del caret. Devuelve `None` si no había nada que
+/// borrar (cursor al inicio + sin selección).
+pub fn delete_backward(buf: &mut Buffer, cursor: &mut Cursor) -> Option<EditDelta> {
+    if cursor.has_selection() {
+        return Some(replace_selection(buf, cursor, ""));
+    }
+    let before = *cursor;
+    let caret_off = buf.pos_to_offset(cursor.caret.line, cursor.caret.col);
+    if caret_off == 0 {
+        return None;
+    }
+    let removed = buf.slice(caret_off - 1, caret_off);
+    buf.delete(caret_off - 1, caret_off);
+    let (line, col) = buf.offset_to_pos(caret_off - 1);
+    cursor.caret = Pos::new(line, col);
+    cursor.desired_col = col;
+    Some(EditDelta {
+        start: caret_off - 1,
+        removed,
+        inserted: String::new(),
+        cursor_before: before,
+        cursor_after: *cursor,
+    })
+}
+
+/// Borra hacia adelante (Delete).
+pub fn delete_forward(buf: &mut Buffer, cursor: &mut Cursor) -> Option<EditDelta> {
+    if cursor.has_selection() {
+        return Some(replace_selection(buf, cursor, ""));
+    }
+    let before = *cursor;
+    let caret_off = buf.pos_to_offset(cursor.caret.line, cursor.caret.col);
+    if caret_off >= buf.len_chars() {
+        return None;
+    }
+    let removed = buf.slice(caret_off, caret_off + 1);
+    buf.delete(caret_off, caret_off + 1);
+    Some(EditDelta {
+        start: caret_off,
+        removed,
+        inserted: String::new(),
+        cursor_before: before,
+        cursor_after: *cursor,
+    })
+}
+
+/// Inserta un salto de línea con **indentación automática**: copia los
+/// whitespace iniciales del renglón actual al renglón nuevo.
+pub fn insert_newline_auto_indent(buf: &mut Buffer, cursor: &mut Cursor) -> EditDelta {
+    let current_line = buf.line(cursor.caret.line);
+    let indent: String = current_line
+        .chars()
+        .take_while(|c| *c == ' ' || *c == '\t')
+        .collect();
+    let text = format!("\n{indent}");
+    replace_selection(buf, cursor, &text)
+}
+
+/// Inserta un tab (o `indent_size` spaces según config). Si hay
+/// selección **multilínea**, indenta cada línea de la selección.
+pub fn indent_or_insert_tab(
+    buf: &mut Buffer,
+    cursor: &mut Cursor,
+    tab_to_spaces: bool,
+    indent_size: usize,
+) -> EditDelta {
+    let indent = indent_str(tab_to_spaces, indent_size);
+
+    // Sin selección o selección en una sola línea → inserta indent.
+    let multi_line = match cursor.selection() {
+        Some(sel) => sel.anchor.line != sel.caret.line,
+        None => false,
+    };
+    if !multi_line {
+        return replace_selection(buf, cursor, &indent);
+    }
+
+    // Selección multilínea: indenta cada línea afectada por el rango.
+    let before = *cursor;
+    let sel = cursor.selection().expect("multi_line implica selección");
+    let first = sel.anchor.line.min(sel.caret.line);
+    let last = sel.anchor.line.max(sel.caret.line);
+
+    let mut start_global = buf.pos_to_offset(first, 0);
+    let removed = String::new();
+    let mut inserted = String::new();
+    for line in first..=last {
+        let line_start = buf.pos_to_offset(line, 0);
+        buf.insert(line_start, &indent);
+        inserted.push_str(&indent);
+        let _ = start_global; // (sin uso; se mantiene por simetría)
+        start_global = buf.pos_to_offset(first, 0);
+    }
+
+    // Mantenemos la selección extendida sobre las líneas indentadas.
+    let n_added = indent.chars().count();
+    let new_anchor = Pos::new(sel.anchor.line, sel.anchor.col + n_added);
+    let new_caret = Pos::new(sel.caret.line, sel.caret.col + n_added);
+    cursor.anchor = Some(new_anchor);
+    cursor.caret = new_caret;
+    cursor.desired_col = new_caret.col;
+
+    EditDelta {
+        start: start_global,
+        removed,
+        inserted,
+        cursor_before: before,
+        cursor_after: *cursor,
+    }
+}
+
+/// Quita un nivel de indent del renglón actual (o de cada línea si hay
+/// selección multilínea). Devuelve `None` si nada cambió.
+pub fn dedent(
+    buf: &mut Buffer,
+    cursor: &mut Cursor,
+    tab_to_spaces: bool,
+    indent_size: usize,
+) -> Option<EditDelta> {
+    let before = *cursor;
+    let (first, last) = match cursor.selection() {
+        Some(sel) => (
+            sel.anchor.line.min(sel.caret.line),
+            sel.anchor.line.max(sel.caret.line),
+        ),
+        None => (cursor.caret.line, cursor.caret.line),
+    };
+
+    let mut total_removed = 0usize;
+    let mut removed_text = String::new();
+    let start_offset = buf.pos_to_offset(first, 0);
+
+    for line in first..=last {
+        let line_str = buf.line(line);
+        let mut n = 0usize;
+        let mut chars = line_str.chars();
+        if tab_to_spaces {
+            for _ in 0..indent_size {
+                if chars.next() == Some(' ') {
+                    n += 1;
+                } else {
+                    break;
+                }
+            }
+        } else if chars.next() == Some('\t') {
+            n = 1;
+        }
+        if n == 0 {
+            continue;
+        }
+        let line_start = buf.pos_to_offset(line, 0);
+        removed_text.push_str(&buf.slice(line_start, line_start + n));
+        buf.delete(line_start, line_start + n);
+        total_removed += n;
+    }
+
+    if total_removed == 0 {
+        return None;
+    }
+
+    // Cursor: clampea col al nuevo line_len.
+    let caret_line = cursor.caret.line;
+    let caret_col = cursor
+        .caret
+        .col
+        .saturating_sub(if caret_line >= first && caret_line <= last {
+            // Cuánto se removió de esta línea (varía); aproximamos al
+            // common case de mismo n por línea. Si fuera distinto el
+            // visual queda OK porque clampea.
+            removed_text.chars().count() / (last - first + 1).max(1)
+        } else {
+            0
+        });
+    cursor.caret.col = caret_col.min(buf.line_len_chars(caret_line));
+    cursor.desired_col = cursor.caret.col;
+
+    if let Some(anchor) = cursor.anchor.as_mut() {
+        if anchor.line >= first && anchor.line <= last {
+            anchor.col = anchor
+                .col
+                .saturating_sub(removed_text.chars().count() / (last - first + 1).max(1))
+                .min(buf.line_len_chars(anchor.line));
+        }
+    }
+
+    Some(EditDelta {
+        start: start_offset,
+        removed: removed_text,
+        inserted: String::new(),
+        cursor_before: before,
+        cursor_after: *cursor,
+    })
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn replace_selection_sin_seleccion_inserta() {
+        let mut b = Buffer::from_str("ab");
+        let mut c = Cursor::at(0, 1);
+        let d = replace_selection(&mut b, &mut c, "X");
+        assert_eq!(b.text(), "aXb");
+        assert_eq!(c.caret, Pos::new(0, 2));
+        assert_eq!(d.removed, "");
+        assert_eq!(d.inserted, "X");
+    }
+
+    #[test]
+    fn replace_selection_con_seleccion_reemplaza() {
+        let mut b = Buffer::from_str("hola mundo");
+        let mut c = Cursor { caret: Pos::new(0, 9), anchor: Some(Pos::new(0, 5)), desired_col: 9 };
+        replace_selection(&mut b, &mut c, "luna");
+        assert_eq!(b.text(), "hola lunao");
+    }
+
+    #[test]
+    fn backspace_borra_char() {
+        let mut b = Buffer::from_str("hola");
+        let mut c = Cursor::at(0, 4);
+        delete_backward(&mut b, &mut c);
+        assert_eq!(b.text(), "hol");
+        assert_eq!(c.caret, Pos::new(0, 3));
+    }
+
+    #[test]
+    fn backspace_en_inicio_no_hace_nada() {
+        let mut b = Buffer::from_str("a");
+        let mut c = Cursor::at(0, 0);
+        assert!(delete_backward(&mut b, &mut c).is_none());
+    }
+
+    #[test]
+    fn delete_forward_borra_char() {
+        let mut b = Buffer::from_str("ab");
+        let mut c = Cursor::at(0, 0);
+        delete_forward(&mut b, &mut c);
+        assert_eq!(b.text(), "b");
+    }
+
+    #[test]
+    fn newline_copia_indent_del_renglon_anterior() {
+        let mut b = Buffer::from_str("    hola");
+        let mut c = Cursor::at(0, 8);
+        insert_newline_auto_indent(&mut b, &mut c);
+        assert_eq!(b.text(), "    hola\n    ");
+        assert_eq!(c.caret, Pos::new(1, 4));
+    }
+
+    #[test]
+    fn tab_inserta_spaces() {
+        let mut b = Buffer::from_str("ab");
+        let mut c = Cursor::at(0, 1);
+        indent_or_insert_tab(&mut b, &mut c, true, 4);
+        assert_eq!(b.text(), "a    b");
+        assert_eq!(c.caret, Pos::new(0, 5));
+    }
+
+    #[test]
+    fn tab_con_seleccion_multilinea_indenta_cada_linea() {
+        let mut b = Buffer::from_str("a\nb\nc");
+        let mut c = Cursor {
+            anchor: Some(Pos::new(0, 0)),
+            caret: Pos::new(2, 1),
+            desired_col: 1,
+        };
+        indent_or_insert_tab(&mut b, &mut c, true, 2);
+        assert_eq!(b.text(), "  a\n  b\n  c");
+    }
+
+    #[test]
+    fn dedent_quita_indent_del_renglon() {
+        let mut b = Buffer::from_str("    hola");
+        let mut c = Cursor::at(0, 8);
+        dedent(&mut b, &mut c, true, 4);
+        assert_eq!(b.text(), "hola");
+    }
+
+    #[test]
+    fn dedent_sin_indent_devuelve_none() {
+        let mut b = Buffer::from_str("hola");
+        let mut c = Cursor::at(0, 0);
+        assert!(dedent(&mut b, &mut c, true, 4).is_none());
+    }
+
+    #[test]
+    fn delta_undo_restaura_estado() {
+        let mut b = Buffer::from_str("hola");
+        let mut c = Cursor::at(0, 4);
+        let d = replace_selection(&mut b, &mut c, "!");
+        assert_eq!(b.text(), "hola!");
+        d.undo(&mut b, &mut c);
+        assert_eq!(b.text(), "hola");
+        assert_eq!(c.caret, Pos::new(0, 4));
+    }
+}
diff --git a/widgets/text-editor-core/src/undo.rs b/widgets/text-editor-core/src/undo.rs
new file mode 100644
index 0000000..6de8ad4
--- /dev/null
+++ b/widgets/text-editor-core/src/undo.rs
@@ -0,0 +1,133 @@
+//! Pila de undo/redo basada en [`EditDelta`].
+//!
+//! API simple: `push(delta)` añade al historial y limpia el stack de
+//! redo; `undo`/`redo` aplican o reaplican deltas existentes. No
+//! coalesce inserciones consecutivas — cada keystroke es un delta;
+//! para una UX más fina, el llamador puede agrupar deltas relacionados
+//! (ej. cada secuencia de chars imprimibles hasta whitespace).
+
+use crate::buffer::Buffer;
+use crate::cursor::Cursor;
+use crate::ops::EditDelta;
+
+const DEFAULT_CAPACITY: usize = 256;
+
+#[derive(Debug, Clone, Default)]
+pub struct UndoStack {
+    /// Deltas aplicados, en orden cronológico. El `Vec::last` es el
+    /// próximo candidato a deshacer.
+    done: Vec<EditDelta>,
+    /// Deltas deshechos disponibles para redo (en orden inverso del
+    /// `undo`: el último deshecho es el primero a rehacer).
+    undone: Vec<EditDelta>,
+    capacity: usize,
+}
+
+impl UndoStack {
+    pub fn new() -> Self {
+        Self::with_capacity(DEFAULT_CAPACITY)
+    }
+    pub fn with_capacity(capacity: usize) -> Self {
+        Self {
+            done: Vec::with_capacity(capacity.min(64)),
+            undone: Vec::new(),
+            capacity,
+        }
+    }
+
+    /// Registra un delta. Limpia el stack de redo (la rama alternativa
+    /// se pierde, como en todo editor estándar).
+    pub fn push(&mut self, delta: EditDelta) {
+        self.done.push(delta);
+        self.undone.clear();
+        if self.done.len() > self.capacity {
+            // Truncamos por el extremo viejo.
+            let drop = self.done.len() - self.capacity;
+            self.done.drain(0..drop);
+        }
+    }
+
+    pub fn can_undo(&self) -> bool {
+        !self.done.is_empty()
+    }
+    pub fn can_redo(&self) -> bool {
+        !self.undone.is_empty()
+    }
+
+    pub fn undo(&mut self, buf: &mut Buffer, cursor: &mut Cursor) -> bool {
+        let Some(delta) = self.done.pop() else {
+            return false;
+        };
+        delta.undo(buf, cursor);
+        self.undone.push(delta);
+        true
+    }
+
+    pub fn redo(&mut self, buf: &mut Buffer, cursor: &mut Cursor) -> bool {
+        let Some(delta) = self.undone.pop() else {
+            return false;
+        };
+        delta.apply(buf, cursor);
+        self.done.push(delta);
+        true
+    }
+
+    pub fn clear(&mut self) {
+        self.done.clear();
+        self.undone.clear();
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::ops::replace_selection;
+
+    #[test]
+    fn undo_y_redo_son_simetricos() {
+        let mut b = Buffer::from_str("a");
+        let mut c = Cursor::at(0, 1);
+        let mut st = UndoStack::new();
+
+        st.push(replace_selection(&mut b, &mut c, "b"));
+        st.push(replace_selection(&mut b, &mut c, "c"));
+        assert_eq!(b.text(), "abc");
+
+        assert!(st.undo(&mut b, &mut c));
+        assert_eq!(b.text(), "ab");
+        assert!(st.undo(&mut b, &mut c));
+        assert_eq!(b.text(), "a");
+
+        assert!(st.redo(&mut b, &mut c));
+        assert_eq!(b.text(), "ab");
+        assert!(st.redo(&mut b, &mut c));
+        assert_eq!(b.text(), "abc");
+    }
+
+    #[test]
+    fn push_limpia_redo() {
+        let mut b = Buffer::from_str("a");
+        let mut c = Cursor::at(0, 1);
+        let mut st = UndoStack::new();
+        st.push(replace_selection(&mut b, &mut c, "b"));
+        st.undo(&mut b, &mut c);
+        assert!(st.can_redo());
+        st.push(replace_selection(&mut b, &mut c, "X"));
+        assert!(!st.can_redo());
+    }
+
+    #[test]
+    fn capacity_descartan_viejos() {
+        let mut b = Buffer::from_str("");
+        let mut c = Cursor::at(0, 0);
+        let mut st = UndoStack::with_capacity(2);
+        for ch in ["a", "b", "c"] {
+            st.push(replace_selection(&mut b, &mut c, ch));
+        }
+        // Sólo deberían quedar los últimos 2 deltas; el undo del primero
+        // (cuando ya no está) no debería hacer nada.
+        st.undo(&mut b, &mut c);
+        st.undo(&mut b, &mut c);
+        assert!(!st.undo(&mut b, &mut c));
+    }
+}
diff --git a/widgets/text-editor-lsp/Cargo.toml b/widgets/text-editor-lsp/Cargo.toml
new file mode 100644
index 0000000..a7009ba
--- /dev/null
+++ b/widgets/text-editor-lsp/Cargo.toml
@@ -0,0 +1,18 @@
+[package]
+name = "llimphi-widget-text-editor-lsp"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-text-editor-lsp — trait LspClient + NoopLspClient como foundation. El cliente real (rust-analyzer/pylsp con tokio + jsonrpc) queda como TODO para una sesión dedicada."
+
+[dependencies]
+llimphi-widget-text-editor = { workspace = true }
+lsp-types = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+tokio = { workspace = true }
+
+[dev-dependencies]
+
diff --git a/widgets/text-editor-lsp/LEEME.md b/widgets/text-editor-lsp/LEEME.md
new file mode 100644
index 0000000..867c27c
--- /dev/null
+++ b/widgets/text-editor-lsp/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-text-editor-lsp
+
+> [`text-editor`](../text-editor/README.md) + LSP para [llimphi](../../README.md).
+
+Wrapper que conecta el editor a un servidor LSP (rust-analyzer, pyright, ...). Hover, goto-definition, autocomplete, diagnostics inline, formatter al guardar.
diff --git a/widgets/text-editor-lsp/README.md b/widgets/text-editor-lsp/README.md
new file mode 100644
index 0000000..8be0f1b
--- /dev/null
+++ b/widgets/text-editor-lsp/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-text-editor-lsp
+
+> [`text-editor`](../text-editor/README.md) + LSP for [llimphi](../../README.md).
+
+Wrapper connecting the editor to an LSP server (rust-analyzer, pyright, ...). Hover, goto-definition, autocomplete, inline diagnostics, format on save.
diff --git a/widgets/text-editor-lsp/src/client.rs b/widgets/text-editor-lsp/src/client.rs
new file mode 100644
index 0000000..20e21dd
--- /dev/null
+++ b/widgets/text-editor-lsp/src/client.rs
@@ -0,0 +1,501 @@
+use super::*;
+
+pub struct RustAnalyzerClient {
+    /// Diagnostics activos por path. Lo escribe la task reader.
+    state: SharedState,
+    /// Sender al writer task. `None` si el spawn falló (modo no-op).
+    tx: Option<tokio::sync::mpsc::UnboundedSender<String>>,
+    /// Contador monotónico de request IDs.
+    next_id: i64,
+    /// Versiones por documento — el server las requiere en didChange.
+    versions: HashMap<PathBuf, i32>,
+    /// Runtime tokio dedicado — vive todo lo que viva el client.
+    /// `None` si el spawn falló.
+    _runtime: Option<Arc<tokio::runtime::Runtime>>,
+}
+
+impl RustAnalyzerClient {
+    /// Spawn `rust-analyzer` en `workspace_root`. Si el binary no está
+    /// en PATH, devuelve un client en modo no-op (sin error).
+    pub fn start(workspace_root: PathBuf) -> Self {
+        Self::with_command(workspace_root, "rust-analyzer")
+    }
+
+    /// Como `start` pero permite indicar el binary (`pylsp`, etc.).
+    pub fn with_command(workspace_root: PathBuf, command: &str) -> Self {
+        let state: SharedState = Arc::new(Mutex::new(SharedInner::default()));
+        let runtime = match tokio::runtime::Builder::new_multi_thread()
+            .worker_threads(2)
+            .enable_all()
+            .build()
+        {
+            Ok(rt) => Arc::new(rt),
+            Err(_) => {
+                return Self {
+                    state,
+                    tx: None,
+                    next_id: 1,
+                    versions: HashMap::new(),
+                    _runtime: None,
+                };
+            }
+        };
+
+        let (tx, rx) = tokio::sync::mpsc::unbounded_channel::<String>();
+        let state_clone = state.clone();
+        let workspace_root_clone = workspace_root.clone();
+        let command_string = command.to_string();
+
+        runtime.spawn(async move {
+            if let Err(e) = run_server(workspace_root_clone, command_string, rx, state_clone).await
+            {
+                eprintln!("lsp: server task terminó con error: {e}");
+            }
+        });
+
+        let mut client = Self {
+            state,
+            tx: Some(tx),
+            next_id: 1,
+            versions: HashMap::new(),
+            _runtime: Some(runtime),
+        };
+        client.send_initialize(&workspace_root);
+        client
+    }
+
+    fn send_initialize(&mut self, root: &Path) {
+        let id = self.alloc_id();
+        let params = serde_json::json!({
+            "processId": std::process::id(),
+            "rootUri": format!("file://{}", root.display()),
+            "capabilities": {
+                "textDocument": {
+                    "publishDiagnostics": { "relatedInformation": false }
+                }
+            },
+            "clientInfo": { "name": "llimphi-text-editor-lsp", "version": "0.1.0" }
+        });
+        let req = serde_json::json!({
+            "jsonrpc": "2.0",
+            "id": id,
+            "method": "initialize",
+            "params": params
+        });
+        self.send_raw(req.to_string());
+        // El handshake termina con la notification `initialized` que
+        // mandamos sin esperar la response — el reader la procesará.
+        let notif = serde_json::json!({
+            "jsonrpc": "2.0",
+            "method": "initialized",
+            "params": {}
+        });
+        self.send_raw(notif.to_string());
+    }
+
+    fn alloc_id(&mut self) -> i64 {
+        let id = self.next_id;
+        self.next_id += 1;
+        id
+    }
+
+    fn send_raw(&self, msg: String) {
+        if let Some(tx) = &self.tx {
+            let _ = tx.send(msg);
+        }
+    }
+
+    fn lsp_language_id(language: &str) -> &str {
+        match language {
+            "rust" | "rs" => "rust",
+            "python" | "py" => "python",
+            other => other,
+        }
+    }
+}
+
+impl LspClient for RustAnalyzerClient {
+    fn diagnostics(&self, path: &Path) -> Vec<Diagnostic> {
+        self.state
+            .lock()
+            .ok()
+            .and_then(|s| s.diagnostics.get(path).cloned())
+            .unwrap_or_default()
+    }
+
+    fn request_completions(&mut self, path: &Path, line: usize, col: usize) {
+        let id = self.alloc_id();
+        if let Ok(mut s) = self.state.lock() {
+            s.pending_completion_ids.insert(id);
+        }
+        let req = serde_json::json!({
+            "jsonrpc": "2.0",
+            "id": id,
+            "method": "textDocument/completion",
+            "params": {
+                "textDocument": { "uri": format!("file://{}", path.display()) },
+                "position": { "line": line, "character": col }
+            }
+        });
+        self.send_raw(req.to_string());
+    }
+
+    fn latest_completions(&self) -> Vec<CompletionItem> {
+        self.state
+            .lock()
+            .map(|s| s.completions.clone())
+            .unwrap_or_default()
+    }
+
+    fn clear_completions(&mut self) {
+        if let Ok(mut s) = self.state.lock() {
+            s.completions.clear();
+        }
+    }
+
+    fn request_hover(&mut self, path: &Path, line: usize, col: usize) {
+        let id = self.alloc_id();
+        if let Ok(mut s) = self.state.lock() {
+            s.pending_hover_ids.insert(id);
+        }
+        let req = serde_json::json!({
+            "jsonrpc": "2.0",
+            "id": id,
+            "method": "textDocument/hover",
+            "params": {
+                "textDocument": { "uri": format!("file://{}", path.display()) },
+                "position": { "line": line, "character": col }
+            }
+        });
+        self.send_raw(req.to_string());
+    }
+
+    fn latest_hover(&self) -> Option<HoverInfo> {
+        self.state.lock().ok().and_then(|s| s.hover.clone())
+    }
+
+    fn clear_hover(&mut self) {
+        if let Ok(mut s) = self.state.lock() {
+            s.hover = None;
+        }
+    }
+
+    fn request_definition(&mut self, path: &Path, line: usize, col: usize) {
+        let id = self.alloc_id();
+        if let Ok(mut s) = self.state.lock() {
+            s.pending_definition_ids.insert(id);
+        }
+        let req = serde_json::json!({
+            "jsonrpc": "2.0",
+            "id": id,
+            "method": "textDocument/definition",
+            "params": {
+                "textDocument": { "uri": format!("file://{}", path.display()) },
+                "position": { "line": line, "character": col }
+            }
+        });
+        self.send_raw(req.to_string());
+    }
+
+    fn latest_definition(&self) -> Option<DefinitionLocation> {
+        self.state.lock().ok().and_then(|s| s.definition.clone())
+    }
+
+    fn clear_definition(&mut self) {
+        if let Ok(mut s) = self.state.lock() {
+            s.definition = None;
+        }
+    }
+
+    fn request_formatting(&mut self, path: &Path, tab_size: u32, insert_spaces: bool) {
+        let id = self.alloc_id();
+        if let Ok(mut s) = self.state.lock() {
+            s.pending_formatting_ids.insert(id);
+        }
+        let req = serde_json::json!({
+            "jsonrpc": "2.0",
+            "id": id,
+            "method": "textDocument/formatting",
+            "params": {
+                "textDocument": { "uri": format!("file://{}", path.display()) },
+                "options": {
+                    "tabSize": tab_size,
+                    "insertSpaces": insert_spaces
+                }
+            }
+        });
+        self.send_raw(req.to_string());
+    }
+
+    fn latest_text_edits(&self) -> Vec<TextEdit> {
+        self.state.lock().map(|s| s.text_edits.clone()).unwrap_or_default()
+    }
+
+    fn clear_text_edits(&mut self) {
+        if let Ok(mut s) = self.state.lock() {
+            s.text_edits.clear();
+        }
+    }
+
+    fn request_signature_help(&mut self, path: &Path, line: usize, col: usize) {
+        let id = self.alloc_id();
+        if let Ok(mut s) = self.state.lock() {
+            s.pending_signature_help_ids.insert(id);
+        }
+        let req = serde_json::json!({
+            "jsonrpc": "2.0",
+            "id": id,
+            "method": "textDocument/signatureHelp",
+            "params": {
+                "textDocument": { "uri": format!("file://{}", path.display()) },
+                "position": { "line": line, "character": col }
+            }
+        });
+        self.send_raw(req.to_string());
+    }
+
+    fn latest_signature_help(&self) -> Option<SignatureHelpInfo> {
+        self.state.lock().ok().and_then(|s| s.signature_help.clone())
+    }
+
+    fn clear_signature_help(&mut self) {
+        if let Ok(mut s) = self.state.lock() {
+            s.signature_help = None;
+        }
+    }
+
+    fn request_references(&mut self, path: &Path, line: usize, col: usize, include_decl: bool) {
+        let id = self.alloc_id();
+        if let Ok(mut s) = self.state.lock() {
+            s.pending_references_ids.insert(id);
+        }
+        let req = serde_json::json!({
+            "jsonrpc": "2.0",
+            "id": id,
+            "method": "textDocument/references",
+            "params": {
+                "textDocument": { "uri": format!("file://{}", path.display()) },
+                "position": { "line": line, "character": col },
+                "context": { "includeDeclaration": include_decl }
+            }
+        });
+        self.send_raw(req.to_string());
+    }
+
+    fn latest_references(&self) -> Vec<DefinitionLocation> {
+        self.state.lock().map(|s| s.references.clone()).unwrap_or_default()
+    }
+
+    fn clear_references(&mut self) {
+        if let Ok(mut s) = self.state.lock() {
+            s.references.clear();
+        }
+    }
+
+    fn request_rename(&mut self, path: &Path, line: usize, col: usize, new_name: &str) {
+        let id = self.alloc_id();
+        if let Ok(mut s) = self.state.lock() {
+            s.pending_rename_ids.insert(id);
+        }
+        let req = serde_json::json!({
+            "jsonrpc": "2.0",
+            "id": id,
+            "method": "textDocument/rename",
+            "params": {
+                "textDocument": { "uri": format!("file://{}", path.display()) },
+                "position": { "line": line, "character": col },
+                "newName": new_name
+            }
+        });
+        self.send_raw(req.to_string());
+    }
+
+    fn latest_workspace_edit(&self) -> std::collections::HashMap<PathBuf, Vec<TextEdit>> {
+        self.state.lock().map(|s| s.workspace_edit.clone()).unwrap_or_default()
+    }
+
+    fn clear_workspace_edit(&mut self) {
+        if let Ok(mut s) = self.state.lock() {
+            s.workspace_edit.clear();
+        }
+    }
+
+    fn request_document_symbols(&mut self, path: &Path) {
+        let id = self.alloc_id();
+        if let Ok(mut s) = self.state.lock() {
+            s.pending_document_symbols_ids.insert(id);
+        }
+        let req = serde_json::json!({
+            "jsonrpc": "2.0",
+            "id": id,
+            "method": "textDocument/documentSymbol",
+            "params": {
+                "textDocument": { "uri": format!("file://{}", path.display()) }
+            }
+        });
+        self.send_raw(req.to_string());
+    }
+
+    fn latest_document_symbols(&self) -> Vec<DocumentSymbolEntry> {
+        self.state.lock().map(|s| s.document_symbols.clone()).unwrap_or_default()
+    }
+
+    fn clear_document_symbols(&mut self) {
+        if let Ok(mut s) = self.state.lock() {
+            s.document_symbols.clear();
+        }
+    }
+
+    fn did_open(&mut self, path: &Path, language: &str, text: &str) {
+        self.versions.insert(path.to_path_buf(), 1);
+        let notif = serde_json::json!({
+            "jsonrpc": "2.0",
+            "method": "textDocument/didOpen",
+            "params": {
+                "textDocument": {
+                    "uri": format!("file://{}", path.display()),
+                    "languageId": Self::lsp_language_id(language),
+                    "version": 1,
+                    "text": text,
+                }
+            }
+        });
+        self.send_raw(notif.to_string());
+    }
+
+    fn did_change(&mut self, path: &Path, new_text: &str) {
+        let version = {
+            let v = self.versions.entry(path.to_path_buf()).or_insert(1);
+            *v += 1;
+            *v
+        };
+        // Full-document change. Más eficiente sería incremental, pero
+        // requiere trackear los EditDeltas del editor — futuro.
+        let notif = serde_json::json!({
+            "jsonrpc": "2.0",
+            "method": "textDocument/didChange",
+            "params": {
+                "textDocument": {
+                    "uri": format!("file://{}", path.display()),
+                    "version": version,
+                },
+                "contentChanges": [{ "text": new_text }]
+            }
+        });
+        self.send_raw(notif.to_string());
+    }
+
+    fn did_close(&mut self, path: &Path) {
+        self.versions.remove(path);
+        let notif = serde_json::json!({
+            "jsonrpc": "2.0",
+            "method": "textDocument/didClose",
+            "params": {
+                "textDocument": { "uri": format!("file://{}", path.display()) }
+            }
+        });
+        self.send_raw(notif.to_string());
+        if let Ok(mut s) = self.state.lock() {
+            s.diagnostics.remove(path);
+        }
+    }
+}
+
+// ---------------------------------------------------------------------
+// Task tokio que corre el server + bombea I/O
+// ---------------------------------------------------------------------
+
+async fn run_server(
+    _workspace_root: PathBuf,
+    command: String,
+    mut rx: tokio::sync::mpsc::UnboundedReceiver<String>,
+    state: SharedState,
+) -> std::io::Result<()> {
+    use std::process::Stdio;
+    use tokio::io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader};
+    use tokio::process::Command;
+
+    let mut child = match Command::new(&command)
+        .stdin(Stdio::piped())
+        .stdout(Stdio::piped())
+        .stderr(Stdio::piped())
+        .spawn()
+    {
+        Ok(c) => c,
+        Err(e) => {
+            eprintln!("lsp: no pude spawn `{command}`: {e}");
+            return Ok(());
+        }
+    };
+
+    let stdin = child.stdin.take().expect("stdin piped");
+    let stdout = child.stdout.take().expect("stdout piped");
+
+    // Writer task: consume el rx y manda al stdin con headers LSP.
+    let writer = tokio::spawn(async move {
+        let mut stdin = stdin;
+        while let Some(msg) = rx.recv().await {
+            let header = format!("Content-Length: {}\r\n\r\n", msg.len());
+            if stdin.write_all(header.as_bytes()).await.is_err() {
+                break;
+            }
+            if stdin.write_all(msg.as_bytes()).await.is_err() {
+                break;
+            }
+            let _ = stdin.flush().await;
+        }
+    });
+
+    // Reader task: parsea mensajes del stdout, procesa publishDiagnostics.
+    let reader = tokio::spawn({
+        let state = state.clone();
+        async move {
+            let mut reader = BufReader::new(stdout);
+            loop {
+                let mut content_length: Option<usize> = None;
+                // Headers — terminan con línea vacía.
+                loop {
+                    let mut line = String::new();
+                    match reader.read_line(&mut line).await {
+                        Ok(0) => return, // EOF
+                        Ok(_) => {}
+                        Err(_) => return,
+                    }
+                    let line = line.trim_end_matches(['\r', '\n']);
+                    if line.is_empty() {
+                        break;
+                    }
+                    if let Some(rest) = line.strip_prefix("Content-Length:") {
+                        if let Ok(n) = rest.trim().parse::<usize>() {
+                            content_length = Some(n);
+                        }
+                    }
+                }
+                let Some(len) = content_length else { continue };
+                let mut buf = vec![0u8; len];
+                if reader.read_exact(&mut buf).await.is_err() {
+                    return;
+                }
+                let Ok(json) = serde_json::from_slice::<serde_json::Value>(&buf) else {
+                    continue;
+                };
+                if json.get("method").and_then(|m| m.as_str())
+                    == Some("textDocument/publishDiagnostics")
+                {
+                    handle_publish_diagnostics(&json, &state);
+                } else if let Some(id) = json.get("id").and_then(|i| i.as_i64()) {
+                    handle_response(id, &json, &state);
+                }
+            }
+        }
+    });
+
+    // Esperamos a que se cierre cualquiera de los dos lados o el child.
+    tokio::select! {
+        _ = writer => {}
+        _ = reader => {}
+        _ = child.wait() => {}
+    }
+    let _ = child.kill().await;
+    Ok(())
+}
diff --git a/widgets/text-editor-lsp/src/lib.rs b/widgets/text-editor-lsp/src/lib.rs
new file mode 100644
index 0000000..37e16e1
--- /dev/null
+++ b/widgets/text-editor-lsp/src/lib.rs
@@ -0,0 +1,275 @@
+//! `llimphi-widget-text-editor-lsp` — cliente LSP para alimentar
+//! diagnostics al editor.
+//!
+//! Implementación real basada en `tokio::process::Command` +
+//! `lsp-types` + JSON-RPC sobre stdin/stdout del language server.
+//!
+//! Flujo:
+//!
+//! 1. `RustAnalyzerClient::start(workspace_root)` spawn `rust-analyzer`
+//!    (o el binary que se le pase con `with_command`) y arranca dos
+//!    tasks tokio:
+//!    - **writer**: consume mensajes del `mpsc::Sender`, los serializa
+//!      con headers `Content-Length: N\r\n\r\n` y los manda al stdin.
+//!    - **reader**: parsea el stdout del server (mismo formato),
+//!      atiende `textDocument/publishDiagnostics` y guarda los
+//!      diagnostics en el state compartido.
+//! 2. El handshake `initialize` se envía sincronicamente desde `start`
+//!    y se espera la respuesta antes de mandar `initialized` +
+//!    procesar más mensajes.
+//! 3. `did_open` / `did_change` / `did_close` mandan las notifications
+//!    correspondientes — sin esperar respuesta.
+//! 4. `diagnostics(path)` lee del state sin contactar al server.
+//!
+//! El client maneja **una sola conexión por instancia**. Para
+//! multi-proyecto el caller crea varios clients.
+//!
+//! Si el server no se puede spawnear (binary no instalado), el client
+//! cae en modo no-op transparentemente — `diagnostics` devuelve vacío.
+
+#![forbid(unsafe_code)]
+
+use std::collections::HashMap;
+use std::path::{Path, PathBuf};
+use std::sync::{Arc, Mutex};
+
+use llimphi_widget_text_editor::{Diagnostic, DiagnosticRange, Pos, Severity};
+
+/// Item de completion — mirror minimal de `lsp_types::CompletionItem`.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct CompletionItem {
+    pub label: String,
+    /// Texto a insertar. Si `None`, se usa `label`.
+    pub insert_text: Option<String>,
+    /// Tipo del símbolo según LSP (Function, Variable, etc.) — para
+    /// mostrar un ícono. Aquí lo guardamos como string corto.
+    pub kind: Option<String>,
+    /// Documentación corta — el primer renglón típicamente.
+    pub detail: Option<String>,
+}
+
+impl CompletionItem {
+    pub fn text_to_insert(&self) -> &str {
+        self.insert_text.as_deref().unwrap_or(self.label.as_str())
+    }
+}
+
+/// Contrato que un client LSP debe cumplir para alimentar al editor.
+pub trait LspClient: Send {
+    fn diagnostics(&self, path: &Path) -> Vec<Diagnostic>;
+    fn did_open(&mut self, path: &Path, language: &str, text: &str);
+    fn did_change(&mut self, path: &Path, new_text: &str);
+    fn did_close(&mut self, path: &Path);
+    /// Dispara una petición de completions en `(line, col)` del path.
+    /// Fire-and-forget; la respuesta se lee con `latest_completions`.
+    fn request_completions(&mut self, path: &Path, line: usize, col: usize);
+    /// Última lista de completions recibida (cualquier path/pos).
+    /// Vacío hasta que el server responda. El client la limpia cuando
+    /// el caller llama `clear_completions`.
+    fn latest_completions(&self) -> Vec<CompletionItem>;
+    /// Borra el cache de completions — útil al cerrar el popup.
+    fn clear_completions(&mut self);
+    /// Dispara textDocument/hover. Fire-and-forget; el caller polla
+    /// `latest_hover` para leer la respuesta.
+    fn request_hover(&mut self, path: &Path, line: usize, col: usize);
+    /// Última hover info recibida (cualquier path/pos).
+    fn latest_hover(&self) -> Option<HoverInfo>;
+    /// Borra el cache de hover.
+    fn clear_hover(&mut self);
+    /// Dispara textDocument/definition. Fire-and-forget; el caller
+    /// polla `latest_definition`.
+    fn request_definition(&mut self, path: &Path, line: usize, col: usize);
+    /// Última definition recibida (path destino + pos de inicio).
+    fn latest_definition(&self) -> Option<DefinitionLocation>;
+    fn clear_definition(&mut self);
+    /// Dispara textDocument/formatting. Cuando llega la response, el
+    /// caller polla `latest_text_edits` y los aplica al buffer.
+    fn request_formatting(&mut self, path: &Path, tab_size: u32, insert_spaces: bool);
+    /// Última lista de TextEdits recibida (de formatting o rename).
+    fn latest_text_edits(&self) -> Vec<TextEdit>;
+    fn clear_text_edits(&mut self);
+    /// Dispara textDocument/signatureHelp. Cuando llega, el popup
+    /// muestra la firma activa con el parámetro current resaltado.
+    fn request_signature_help(&mut self, path: &Path, line: usize, col: usize);
+    fn latest_signature_help(&self) -> Option<SignatureHelpInfo>;
+    fn clear_signature_help(&mut self);
+    /// Dispara textDocument/references. `include_decl` controla si la
+    /// declaración misma aparece en los resultados.
+    fn request_references(&mut self, path: &Path, line: usize, col: usize, include_decl: bool);
+    fn latest_references(&self) -> Vec<DefinitionLocation>;
+    fn clear_references(&mut self);
+    /// Dispara textDocument/rename con `new_name` como nuevo identificador.
+    fn request_rename(&mut self, path: &Path, line: usize, col: usize, new_name: &str);
+    /// Última WorkspaceEdit recibida (rename o code actions). Mapeado a
+    /// `path → Vec<TextEdit>` por simplicidad.
+    fn latest_workspace_edit(&self) -> std::collections::HashMap<PathBuf, Vec<TextEdit>>;
+    fn clear_workspace_edit(&mut self);
+
+    /// Dispara textDocument/documentSymbol. La respuesta llega
+    /// asincrónica; el caller la recoge con [`latest_document_symbols`].
+    fn request_document_symbols(&mut self, path: &Path);
+    /// Última respuesta de documentSymbol — lista plana flattening del
+    /// árbol jerárquico que devuelve el server. Orden: top-down,
+    /// children en orden de aparición. `depth` refleja la profundidad
+    /// para que el caller indente visualmente.
+    fn latest_document_symbols(&self) -> Vec<DocumentSymbolEntry>;
+    fn clear_document_symbols(&mut self);
+}
+
+/// Una entrada flattening del árbol `DocumentSymbol` del LSP. Espejo
+/// mínimo que evita arrastrar `lsp_types::SymbolKind` a los hosts —
+/// `kind` viene ya como string corta (`"fn"`, `"struct"`, `"method"`, …).
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct DocumentSymbolEntry {
+    pub name: String,
+    pub kind: String,
+    pub line: usize,
+    pub col: usize,
+    pub container: Option<String>,
+    pub depth: u32,
+}
+
+/// Info de signatureHelp activa.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct SignatureHelpInfo {
+    /// Firma activa (label completa, ej. "fn foo(x: i32, y: String) -> u64").
+    pub label: String,
+    /// Documentación de la firma activa.
+    pub doc: Option<String>,
+    /// Índice del parámetro current (0-based).
+    pub active_param: usize,
+    /// Labels de los parámetros — para resaltar el activo.
+    pub param_labels: Vec<String>,
+}
+
+/// Edit estilo LSP: reemplazar el rango `[start..end)` por `new_text`.
+/// Para apply: ordenar desc por `start` y aplicar uno por uno.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct TextEdit {
+    pub start_line: usize,
+    pub start_col: usize,
+    pub end_line: usize,
+    pub end_col: usize,
+    pub new_text: String,
+}
+
+/// Resultado de un goto-definition: archivo destino + posición.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct DefinitionLocation {
+    pub path: PathBuf,
+    pub line: usize,
+    pub col: usize,
+}
+
+/// Información de hover — espejo simplificado de `lsp_types::Hover`.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct HoverInfo {
+    /// Markdown / plaintext del símbolo bajo el cursor. El render del
+    /// caller lo muestra tal cual (sin parsear markdown todavía).
+    pub contents: String,
+}
+
+/// Stub que no hace nada — útil cuando no hay LSP configurado o para tests.
+#[derive(Debug, Default, Clone, Copy)]
+pub struct NoopLspClient;
+
+impl LspClient for NoopLspClient {
+    fn diagnostics(&self, _: &Path) -> Vec<Diagnostic> {
+        Vec::new()
+    }
+    fn did_open(&mut self, _: &Path, _: &str, _: &str) {}
+    fn did_change(&mut self, _: &Path, _: &str) {}
+    fn did_close(&mut self, _: &Path) {}
+    fn request_completions(&mut self, _: &Path, _: usize, _: usize) {}
+    fn latest_completions(&self) -> Vec<CompletionItem> {
+        Vec::new()
+    }
+    fn clear_completions(&mut self) {}
+    fn request_hover(&mut self, _: &Path, _: usize, _: usize) {}
+    fn latest_hover(&self) -> Option<HoverInfo> {
+        None
+    }
+    fn clear_hover(&mut self) {}
+    fn request_definition(&mut self, _: &Path, _: usize, _: usize) {}
+    fn latest_definition(&self) -> Option<DefinitionLocation> {
+        None
+    }
+    fn clear_definition(&mut self) {}
+    fn request_formatting(&mut self, _: &Path, _: u32, _: bool) {}
+    fn latest_text_edits(&self) -> Vec<TextEdit> {
+        Vec::new()
+    }
+    fn clear_text_edits(&mut self) {}
+    fn request_signature_help(&mut self, _: &Path, _: usize, _: usize) {}
+    fn latest_signature_help(&self) -> Option<SignatureHelpInfo> {
+        None
+    }
+    fn clear_signature_help(&mut self) {}
+    fn request_references(&mut self, _: &Path, _: usize, _: usize, _: bool) {}
+    fn latest_references(&self) -> Vec<DefinitionLocation> {
+        Vec::new()
+    }
+    fn clear_references(&mut self) {}
+    fn request_rename(&mut self, _: &Path, _: usize, _: usize, _: &str) {}
+    fn latest_workspace_edit(&self) -> std::collections::HashMap<PathBuf, Vec<TextEdit>> {
+        std::collections::HashMap::new()
+    }
+    fn clear_workspace_edit(&mut self) {}
+    fn request_document_symbols(&mut self, _: &Path) {}
+    fn latest_document_symbols(&self) -> Vec<DocumentSymbolEntry> {
+        Vec::new()
+    }
+    fn clear_document_symbols(&mut self) {}
+}
+
+// ---------------------------------------------------------------------
+// Rust-analyzer client real
+// ---------------------------------------------------------------------
+
+/// State compartido: paths → versión + diagnostics actuales + última
+/// lista de completions recibida.
+#[derive(Default)]
+struct SharedInner {
+    diagnostics: HashMap<PathBuf, Vec<Diagnostic>>,
+    /// Última respuesta de completions — sobreescribe cualquier
+    /// request previo. El caller decide cuándo limpiar.
+    completions: Vec<CompletionItem>,
+    /// Última hover info recibida.
+    hover: Option<HoverInfo>,
+    /// Última definition recibida.
+    definition: Option<DefinitionLocation>,
+    /// Última lista de TextEdits (formatting / rename).
+    text_edits: Vec<TextEdit>,
+    /// Última signature help.
+    signature_help: Option<SignatureHelpInfo>,
+    /// Última lista de references.
+    references: Vec<DefinitionLocation>,
+    /// Última WorkspaceEdit (de rename). Mapeo path → edits.
+    workspace_edit: HashMap<PathBuf, Vec<TextEdit>>,
+    /// Última lista de document symbols (flattened del árbol que devuelve
+    /// el server). Se sobreescribe en cada request.
+    document_symbols: Vec<DocumentSymbolEntry>,
+    /// IDs de requests pendientes para distinguir responses; el reader
+    /// usa estos sets para routear cada response al handler correcto.
+    pending_completion_ids: std::collections::HashSet<i64>,
+    pending_hover_ids: std::collections::HashSet<i64>,
+    pending_definition_ids: std::collections::HashSet<i64>,
+    pending_formatting_ids: std::collections::HashSet<i64>,
+    pending_signature_help_ids: std::collections::HashSet<i64>,
+    pending_references_ids: std::collections::HashSet<i64>,
+    pending_rename_ids: std::collections::HashSet<i64>,
+    pending_document_symbols_ids: std::collections::HashSet<i64>,
+}
+
+type SharedState = Arc<Mutex<SharedInner>>;
+
+// Cliente y protocolo partidos del monolito (regla dura #1, 1660 LOC):
+// `client` (RustAnalyzerClient + impls), `protocol` (parsers/handlers JSON-RPC).
+mod client;
+mod protocol;
+
+pub use client::RustAnalyzerClient;
+pub(crate) use protocol::*;
+
+#[cfg(test)]
+mod tests;
diff --git a/widgets/text-editor-lsp/src/protocol.rs b/widgets/text-editor-lsp/src/protocol.rs
new file mode 100644
index 0000000..f30df0c
--- /dev/null
+++ b/widgets/text-editor-lsp/src/protocol.rs
@@ -0,0 +1,515 @@
+//! Parsers y handlers JSON-RPC de las respuestas/notificaciones LSP.
+
+use super::*;
+
+pub(crate) fn handle_publish_diagnostics(json: &serde_json::Value, state: &SharedState) {
+    let Some(params) = json.get("params") else { return };
+    let Some(uri) = params.get("uri").and_then(|u| u.as_str()) else { return };
+    let path = match uri.strip_prefix("file://") {
+        Some(p) => PathBuf::from(p),
+        None => return,
+    };
+    let Some(diags_arr) = params.get("diagnostics").and_then(|d| d.as_array()) else {
+        return;
+    };
+    let diagnostics: Vec<Diagnostic> = diags_arr
+        .iter()
+        .filter_map(parse_lsp_diagnostic)
+        .collect();
+    if let Ok(mut s) = state.lock() {
+        s.diagnostics.insert(path, diagnostics);
+    }
+}
+
+/// Routea una response del server al handler correspondiente según
+/// qué set de pendientes la contenía.
+pub(crate) fn handle_response(id: i64, json: &serde_json::Value, state: &SharedState) {
+    let flags = {
+        let Ok(mut s) = state.lock() else { return };
+        (
+            s.pending_completion_ids.remove(&id),
+            s.pending_hover_ids.remove(&id),
+            s.pending_definition_ids.remove(&id),
+            s.pending_formatting_ids.remove(&id),
+            s.pending_signature_help_ids.remove(&id),
+            s.pending_references_ids.remove(&id),
+            s.pending_rename_ids.remove(&id),
+            s.pending_document_symbols_ids.remove(&id),
+        )
+    };
+    let (was_completion, was_hover, was_def, was_fmt, was_sig, was_refs, was_rename, was_doc_sym) =
+        flags;
+    if was_completion {
+        handle_completion_response(json, state);
+    }
+    if was_hover {
+        handle_hover_response(json, state);
+    }
+    if was_def {
+        handle_definition_response(json, state);
+    }
+    if was_fmt {
+        handle_text_edits_response(json, state);
+    }
+    if was_sig {
+        handle_signature_help_response(json, state);
+    }
+    if was_refs {
+        handle_references_response(json, state);
+    }
+    if was_rename {
+        handle_rename_response(json, state);
+    }
+    if was_doc_sym {
+        handle_document_symbols_response(json, state);
+    }
+}
+
+/// Parsea la respuesta de `textDocument/documentSymbol`. Devuelve dos
+/// formatos posibles según la versión del server:
+///
+/// - `DocumentSymbol[]` (jerárquico, moderno) — el que usa rust-analyzer.
+/// - `SymbolInformation[]` (plano, legacy) — fallback razonable.
+///
+/// Ambos se flatten a `Vec<DocumentSymbolEntry>` con depth para que el
+/// caller pueda indentar visualmente.
+pub(crate) fn handle_document_symbols_response(json: &serde_json::Value, state: &SharedState) {
+    let Some(result) = json.get("result") else { return };
+    if result.is_null() {
+        if let Ok(mut s) = state.lock() {
+            s.document_symbols.clear();
+        }
+        return;
+    }
+    let mut out: Vec<DocumentSymbolEntry> = Vec::new();
+    if let Some(arr) = result.as_array() {
+        for item in arr {
+            // Distingue por la presencia de "selectionRange" (sólo en
+            // DocumentSymbol). SymbolInformation tiene "location" en
+            // su lugar.
+            if item.get("selectionRange").is_some() {
+                flatten_document_symbol(item, None, 0, &mut out);
+            } else if item.get("location").is_some() {
+                if let Some(entry) = parse_symbol_information(item) {
+                    out.push(entry);
+                }
+            }
+        }
+    }
+    if let Ok(mut s) = state.lock() {
+        s.document_symbols = out;
+    }
+}
+
+/// Flatten recursivo de `DocumentSymbol`. `parent` es el nombre del
+/// contenedor (para que `container` quede poblado en métodos/campos).
+pub(crate) fn flatten_document_symbol(
+    node: &serde_json::Value,
+    parent: Option<&str>,
+    depth: u32,
+    out: &mut Vec<DocumentSymbolEntry>,
+) {
+    let name = node.get("name").and_then(|v| v.as_str()).unwrap_or("?").to_string();
+    let kind_num = node.get("kind").and_then(|v| v.as_u64()).unwrap_or(0);
+    let kind = symbol_kind_label(kind_num);
+    // `selectionRange.start` es la pos del identificador (lo que el
+    // usuario quiere ver al saltar). `range.start` apuntaría al `{` de
+    // la definición — menos útil para outline.
+    let (line, col) = node
+        .get("selectionRange")
+        .and_then(|r| r.get("start"))
+        .and_then(parse_position)
+        .or_else(|| node.get("range").and_then(|r| r.get("start")).and_then(parse_position))
+        .unwrap_or((0, 0));
+    out.push(DocumentSymbolEntry {
+        name: name.clone(),
+        kind,
+        line,
+        col,
+        container: parent.map(|s| s.to_string()),
+        depth,
+    });
+    if let Some(children) = node.get("children").and_then(|c| c.as_array()) {
+        for child in children {
+            flatten_document_symbol(child, Some(&name), depth + 1, out);
+        }
+    }
+}
+
+pub(crate) fn parse_symbol_information(item: &serde_json::Value) -> Option<DocumentSymbolEntry> {
+    let name = item.get("name")?.as_str()?.to_string();
+    let kind_num = item.get("kind").and_then(|v| v.as_u64()).unwrap_or(0);
+    let location = item.get("location")?;
+    let (line, col) = location.get("range").and_then(|r| r.get("start")).and_then(parse_position)?;
+    let container = item
+        .get("containerName")
+        .and_then(|v| v.as_str())
+        .filter(|s| !s.is_empty())
+        .map(|s| s.to_string());
+    Some(DocumentSymbolEntry {
+        name,
+        kind: symbol_kind_label(kind_num),
+        line,
+        col,
+        container,
+        depth: 0,
+    })
+}
+
+pub(crate) fn parse_position(p: &serde_json::Value) -> Option<(usize, usize)> {
+    let line = p.get("line")?.as_u64()? as usize;
+    let col = p.get("character")?.as_u64()? as usize;
+    Some((line, col))
+}
+
+/// Mapea el `SymbolKind` numérico del LSP a la etiqueta corta que el
+/// outline pinta. Sólo cubre las que el usuario suele ver — el resto
+/// va a `"sym"`. Lista canónica: <https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#symbolKind>
+pub(crate) fn symbol_kind_label(kind: u64) -> String {
+    match kind {
+        2 => "mod",
+        5 => "class",
+        6 => "method",
+        7 => "property",
+        8 => "field",
+        9 => "ctor",
+        10 => "enum",
+        11 => "iface",
+        12 => "fn",
+        13 => "var",
+        14 => "const",
+        15 => "str",
+        18 => "arr",
+        22 => "variant",
+        23 => "struct",
+        26 => "type",
+        _ => "sym",
+    }
+    .to_string()
+}
+
+pub(crate) fn handle_rename_response(json: &serde_json::Value, state: &SharedState) {
+    let Some(result) = json.get("result") else { return };
+    if result.is_null() {
+        return;
+    }
+    let mut map: HashMap<PathBuf, Vec<TextEdit>> = HashMap::new();
+    // changes: { uri → TextEdit[] }
+    if let Some(changes) = result.get("changes").and_then(|c| c.as_object()) {
+        for (uri, edits_val) in changes {
+            let Some(path) = uri.strip_prefix("file://").map(PathBuf::from) else { continue };
+            let Some(arr) = edits_val.as_array() else { continue };
+            let edits: Vec<TextEdit> = arr.iter().filter_map(parse_text_edit).collect();
+            map.insert(path, edits);
+        }
+    }
+    // documentChanges: [{ textDocument: { uri }, edits: [...] }] — más nuevo.
+    if let Some(docs) = result.get("documentChanges").and_then(|c| c.as_array()) {
+        for doc in docs {
+            let Some(uri) = doc
+                .get("textDocument")
+                .and_then(|t| t.get("uri"))
+                .and_then(|u| u.as_str())
+            else {
+                continue;
+            };
+            let Some(path) = uri.strip_prefix("file://").map(PathBuf::from) else { continue };
+            let Some(arr) = doc.get("edits").and_then(|e| e.as_array()) else { continue };
+            let edits: Vec<TextEdit> = arr.iter().filter_map(parse_text_edit).collect();
+            map.entry(path).or_default().extend(edits);
+        }
+    }
+    if let Ok(mut s) = state.lock() {
+        s.workspace_edit = map;
+    }
+}
+
+pub(crate) fn handle_references_response(json: &serde_json::Value, state: &SharedState) {
+    let Some(result) = json.get("result") else { return };
+    if result.is_null() {
+        if let Ok(mut s) = state.lock() {
+            s.references.clear();
+        }
+        return;
+    }
+    let Some(arr) = result.as_array() else { return };
+    let refs: Vec<DefinitionLocation> = arr.iter().filter_map(parse_location).collect();
+    if let Ok(mut s) = state.lock() {
+        s.references = refs;
+    }
+}
+
+/// Parsea una `Location` LSP: { uri, range } → DefinitionLocation.
+pub(crate) fn parse_location(loc: &serde_json::Value) -> Option<DefinitionLocation> {
+    let uri = loc.get("uri")?.as_str()?;
+    let path = uri.strip_prefix("file://").map(PathBuf::from)?;
+    let range = loc.get("range")?;
+    let start = range.get("start")?;
+    let line = start.get("line")?.as_u64()? as usize;
+    let col = start.get("character")?.as_u64()? as usize;
+    Some(DefinitionLocation { path, line, col })
+}
+
+pub(crate) fn handle_signature_help_response(json: &serde_json::Value, state: &SharedState) {
+    let Some(result) = json.get("result") else { return };
+    if result.is_null() {
+        if let Ok(mut s) = state.lock() {
+            s.signature_help = None;
+        }
+        return;
+    }
+    let info = parse_signature_help(result);
+    if let Ok(mut s) = state.lock() {
+        s.signature_help = info;
+    }
+}
+
+pub(crate) fn parse_signature_help(result: &serde_json::Value) -> Option<SignatureHelpInfo> {
+    let sigs = result.get("signatures")?.as_array()?;
+    if sigs.is_empty() {
+        return None;
+    }
+    let active_sig = result.get("activeSignature").and_then(|n| n.as_u64()).unwrap_or(0) as usize;
+    let sig = sigs.get(active_sig).or_else(|| sigs.first())?;
+    let label = sig.get("label")?.as_str()?.to_string();
+    let doc = sig
+        .get("documentation")
+        .map(stringify_hover_contents)
+        .filter(|s| !s.is_empty());
+    let active_param = sig
+        .get("activeParameter")
+        .or_else(|| result.get("activeParameter"))
+        .and_then(|n| n.as_u64())
+        .unwrap_or(0) as usize;
+    let param_labels = sig
+        .get("parameters")
+        .and_then(|p| p.as_array())
+        .map(|arr| {
+            arr.iter()
+                .filter_map(|p| {
+                    let lbl = p.get("label")?;
+                    if let Some(s) = lbl.as_str() {
+                        Some(s.to_string())
+                    } else if let Some(arr2) = lbl.as_array() {
+                        let s = arr2.first()?.as_u64()? as usize;
+                        let e = arr2.get(1)?.as_u64()? as usize;
+                        label.get(s..e).map(String::from)
+                    } else {
+                        None
+                    }
+                })
+                .collect()
+        })
+        .unwrap_or_default();
+    Some(SignatureHelpInfo { label, doc, active_param, param_labels })
+}
+
+pub(crate) fn handle_text_edits_response(json: &serde_json::Value, state: &SharedState) {
+    let Some(result) = json.get("result") else { return };
+    if result.is_null() {
+        return;
+    }
+    let Some(arr) = result.as_array() else { return };
+    let edits: Vec<TextEdit> = arr.iter().filter_map(parse_text_edit).collect();
+    if let Ok(mut s) = state.lock() {
+        s.text_edits = edits;
+    }
+}
+
+pub(crate) fn parse_text_edit(v: &serde_json::Value) -> Option<TextEdit> {
+    let range = v.get("range")?;
+    let start = range.get("start")?;
+    let end = range.get("end")?;
+    let start_line = start.get("line")?.as_u64()? as usize;
+    let start_col = start.get("character")?.as_u64()? as usize;
+    let end_line = end.get("line")?.as_u64()? as usize;
+    let end_col = end.get("character")?.as_u64()? as usize;
+    let new_text = v.get("newText")?.as_str()?.to_string();
+    Some(TextEdit { start_line, start_col, end_line, end_col, new_text })
+}
+
+pub(crate) fn handle_definition_response(json: &serde_json::Value, state: &SharedState) {
+    let Some(result) = json.get("result") else { return };
+    if result.is_null() {
+        return;
+    }
+    // `result` puede ser:
+    // - Location          { uri, range }
+    // - Location[]
+    // - LocationLink[]    { targetUri, targetSelectionRange }
+    // Tomamos la primera location en cualquier caso.
+    let loc_value = if result.is_array() {
+        result.as_array().and_then(|a| a.first()).cloned()
+    } else {
+        Some(result.clone())
+    };
+    let Some(loc) = loc_value else { return };
+
+    let (uri, range) = if let Some(u) = loc.get("uri") {
+        (u, loc.get("range"))
+    } else if let Some(u) = loc.get("targetUri") {
+        (
+            u,
+            loc.get("targetSelectionRange").or_else(|| loc.get("targetRange")),
+        )
+    } else {
+        return;
+    };
+    let Some(uri) = uri.as_str() else { return };
+    let path = match uri.strip_prefix("file://") {
+        Some(p) => PathBuf::from(p),
+        None => return,
+    };
+    let Some(range) = range else { return };
+    let Some(start) = range.get("start") else { return };
+    let line = start.get("line").and_then(|n| n.as_u64()).unwrap_or(0) as usize;
+    let col = start.get("character").and_then(|n| n.as_u64()).unwrap_or(0) as usize;
+    if let Ok(mut s) = state.lock() {
+        s.definition = Some(DefinitionLocation { path, line, col });
+    }
+}
+
+pub(crate) fn handle_completion_response(json: &serde_json::Value, state: &SharedState) {
+    let Some(result) = json.get("result") else { return };
+    let items_arr = if let Some(arr) = result.as_array() {
+        arr.clone()
+    } else if let Some(items) = result.get("items").and_then(|i| i.as_array()) {
+        items.clone()
+    } else {
+        return;
+    };
+    let completions: Vec<CompletionItem> = items_arr.iter().filter_map(parse_completion).collect();
+    if let Ok(mut s) = state.lock() {
+        s.completions = completions;
+    }
+}
+
+pub(crate) fn handle_hover_response(json: &serde_json::Value, state: &SharedState) {
+    let Some(result) = json.get("result") else { return };
+    if result.is_null() {
+        if let Ok(mut s) = state.lock() {
+            s.hover = None;
+        }
+        return;
+    }
+    let info = parse_hover(result);
+    if let Ok(mut s) = state.lock() {
+        s.hover = info;
+    }
+}
+
+/// `contents` en LSP puede ser:
+/// - String
+/// - { kind: "markdown"|"plaintext", value: String }
+/// - Array de los anteriores (deprecated pero algunos servers lo mandan)
+/// - { language: ..., value: ... } (legacy MarkedString)
+pub(crate) fn parse_hover(result: &serde_json::Value) -> Option<HoverInfo> {
+    let contents = result.get("contents")?;
+    let text = stringify_hover_contents(contents);
+    if text.is_empty() {
+        None
+    } else {
+        Some(HoverInfo { contents: text })
+    }
+}
+
+pub(crate) fn stringify_hover_contents(v: &serde_json::Value) -> String {
+    match v {
+        serde_json::Value::String(s) => s.clone(),
+        serde_json::Value::Object(map) => {
+            // { kind, value } o { language, value }
+            map.get("value")
+                .and_then(|s| s.as_str())
+                .unwrap_or("")
+                .to_string()
+        }
+        serde_json::Value::Array(arr) => arr
+            .iter()
+            .map(stringify_hover_contents)
+            .filter(|s| !s.is_empty())
+            .collect::<Vec<_>>()
+            .join("\n"),
+        _ => String::new(),
+    }
+}
+
+pub(crate) fn parse_completion(v: &serde_json::Value) -> Option<CompletionItem> {
+    let label = v.get("label")?.as_str()?.to_string();
+    let insert_text = v
+        .get("insertText")
+        .and_then(|s| s.as_str())
+        .map(String::from);
+    let kind = v
+        .get("kind")
+        .and_then(|k| k.as_u64())
+        .map(|n| completion_kind_label(n).to_string());
+    let detail = v
+        .get("detail")
+        .and_then(|d| d.as_str())
+        .map(String::from);
+    Some(CompletionItem { label, insert_text, kind, detail })
+}
+
+/// Etiqueta corta para el CompletionItemKind de LSP (1..25).
+pub(crate) fn completion_kind_label(k: u64) -> &'static str {
+    match k {
+        1 => "Text",
+        2 => "Method",
+        3 => "Function",
+        4 => "Ctor",
+        5 => "Field",
+        6 => "Var",
+        7 => "Class",
+        8 => "Iface",
+        9 => "Mod",
+        10 => "Prop",
+        11 => "Unit",
+        12 => "Value",
+        13 => "Enum",
+        14 => "Keyword",
+        15 => "Snip",
+        16 => "Color",
+        17 => "File",
+        18 => "Ref",
+        19 => "Folder",
+        20 => "EnumMember",
+        21 => "Const",
+        22 => "Struct",
+        23 => "Event",
+        24 => "Op",
+        25 => "TypeParam",
+        _ => "?",
+    }
+}
+
+pub(crate) fn parse_lsp_diagnostic(d: &serde_json::Value) -> Option<Diagnostic> {
+    let range = d.get("range")?;
+    let start = range.get("start")?;
+    let end = range.get("end")?;
+    let sl = start.get("line")?.as_u64()? as usize;
+    let sc = start.get("character")?.as_u64()? as usize;
+    let el = end.get("line")?.as_u64()? as usize;
+    let ec = end.get("character")?.as_u64()? as usize;
+    let severity = match d.get("severity").and_then(|s| s.as_u64()) {
+        Some(1) => Severity::Error,
+        Some(2) => Severity::Warning,
+        Some(3) => Severity::Information,
+        Some(4) => Severity::Hint,
+        _ => Severity::Information,
+    };
+    let message = d
+        .get("message")
+        .and_then(|m| m.as_str())
+        .unwrap_or("")
+        .to_string();
+    let source = d.get("source").and_then(|s| s.as_str()).map(String::from);
+    Some(Diagnostic {
+        range: DiagnosticRange {
+            start: Pos::new(sl, sc),
+            end: Pos::new(el, ec),
+        },
+        severity,
+        message,
+        source,
+    })
+}
diff --git a/widgets/text-editor-lsp/src/tests.rs b/widgets/text-editor-lsp/src/tests.rs
new file mode 100644
index 0000000..40a27ee
--- /dev/null
+++ b/widgets/text-editor-lsp/src/tests.rs
@@ -0,0 +1,380 @@
+use super::*;
+
+#[test]
+fn noop_devuelve_vacio() {
+    let c = NoopLspClient;
+    assert!(c.diagnostics(&PathBuf::from("x")).is_empty());
+}
+
+#[test]
+fn noop_no_panic_en_eventos() {
+    let mut c = NoopLspClient;
+    c.did_open(&PathBuf::from("x"), "rust", "fn main() {}");
+    c.did_change(&PathBuf::from("x"), "fn main() { 1 }");
+    c.did_close(&PathBuf::from("x"));
+}
+
+#[test]
+fn parse_diagnostic_minimo() {
+    let json = serde_json::json!({
+        "range": {
+            "start": { "line": 3, "character": 5 },
+            "end":   { "line": 3, "character": 12 }
+        },
+        "severity": 1,
+        "message": "no es así",
+        "source": "rustc"
+    });
+    let d = parse_lsp_diagnostic(&json).unwrap();
+    assert_eq!(d.range.start, Pos::new(3, 5));
+    assert_eq!(d.range.end, Pos::new(3, 12));
+    assert_eq!(d.severity, Severity::Error);
+    assert_eq!(d.message, "no es así");
+    assert_eq!(d.source.as_deref(), Some("rustc"));
+}
+
+#[test]
+fn parse_diagnostic_sin_severidad_es_info() {
+    let json = serde_json::json!({
+        "range": {
+            "start": { "line": 0, "character": 0 },
+            "end":   { "line": 0, "character": 1 }
+        },
+        "message": "x"
+    });
+    let d = parse_lsp_diagnostic(&json).unwrap();
+    assert_eq!(d.severity, Severity::Information);
+}
+
+#[test]
+fn parse_completion_minimo() {
+    let v = serde_json::json!({
+        "label": "to_string",
+        "insertText": "to_string()",
+        "kind": 2,
+        "detail": "fn(&self) -> String"
+    });
+    let c = parse_completion(&v).unwrap();
+    assert_eq!(c.label, "to_string");
+    assert_eq!(c.insert_text.as_deref(), Some("to_string()"));
+    assert_eq!(c.kind.as_deref(), Some("Method"));
+    assert_eq!(c.detail.as_deref(), Some("fn(&self) -> String"));
+}
+
+#[test]
+fn parse_hover_string_simple() {
+    let v = serde_json::json!({ "contents": "hola" });
+    let h = parse_hover(&v).unwrap();
+    assert_eq!(h.contents, "hola");
+}
+
+#[test]
+fn parse_hover_marked_object() {
+    let v = serde_json::json!({
+        "contents": { "kind": "markdown", "value": "**fn**(x: i32) -> i32" }
+    });
+    let h = parse_hover(&v).unwrap();
+    assert_eq!(h.contents, "**fn**(x: i32) -> i32");
+}
+
+#[test]
+fn parse_hover_array_concatena() {
+    let v = serde_json::json!({
+        "contents": ["primero", { "value": "segundo" }, ""]
+    });
+    let h = parse_hover(&v).unwrap();
+    assert_eq!(h.contents, "primero\nsegundo");
+}
+
+#[test]
+fn parse_hover_vacio_devuelve_none() {
+    let v = serde_json::json!({ "contents": "" });
+    assert!(parse_hover(&v).is_none());
+}
+
+#[test]
+fn parse_completion_sin_insert_text_usa_label() {
+    let v = serde_json::json!({ "label": "main" });
+    let c = parse_completion(&v).unwrap();
+    assert_eq!(c.text_to_insert(), "main");
+}
+
+fn make_state() -> SharedState {
+    Arc::new(Mutex::new(SharedInner::default()))
+}
+
+#[test]
+fn handle_rename_changes_map() {
+    let s = make_state();
+    let json = serde_json::json!({
+        "id": 1,
+        "result": {
+            "changes": {
+                "file:///tmp/a.rs": [
+                    { "range": { "start": { "line": 0, "character": 0 }, "end": { "line": 0, "character": 3 } }, "newText": "bar" }
+                ],
+                "file:///tmp/b.rs": [
+                    { "range": { "start": { "line": 5, "character": 4 }, "end": { "line": 5, "character": 7 } }, "newText": "bar" },
+                    { "range": { "start": { "line": 10, "character": 0 }, "end": { "line": 10, "character": 3 } }, "newText": "bar" }
+                ]
+            }
+        }
+    });
+    handle_rename_response(&json, &s);
+    let we = s.lock().unwrap().workspace_edit.clone();
+    assert_eq!(we.len(), 2);
+    assert_eq!(we.get(&PathBuf::from("/tmp/a.rs")).unwrap().len(), 1);
+    assert_eq!(we.get(&PathBuf::from("/tmp/b.rs")).unwrap().len(), 2);
+}
+
+#[test]
+fn handle_rename_document_changes() {
+    let s = make_state();
+    let json = serde_json::json!({
+        "id": 1,
+        "result": {
+            "documentChanges": [
+                {
+                    "textDocument": { "uri": "file:///tmp/x.rs", "version": 2 },
+                    "edits": [
+                        { "range": { "start": { "line": 0, "character": 0 }, "end": { "line": 0, "character": 3 } }, "newText": "foo" }
+                    ]
+                }
+            ]
+        }
+    });
+    handle_rename_response(&json, &s);
+    let we = s.lock().unwrap().workspace_edit.clone();
+    assert_eq!(we.len(), 1);
+    assert_eq!(we.get(&PathBuf::from("/tmp/x.rs")).unwrap().len(), 1);
+}
+
+#[test]
+fn handle_document_symbols_jerarquico() {
+    let s = make_state();
+    // Estructura: struct Foo { fn bar(), fn baz() } + fn top()
+    let json = serde_json::json!({
+        "id": 1,
+        "result": [
+            {
+                "name": "Foo",
+                "kind": 23, // struct
+                "range": { "start": { "line": 0, "character": 0 }, "end": { "line": 10, "character": 1 } },
+                "selectionRange": { "start": { "line": 0, "character": 7 }, "end": { "line": 0, "character": 10 } },
+                "children": [
+                    {
+                        "name": "bar",
+                        "kind": 6, // method
+                        "range": { "start": { "line": 2, "character": 4 }, "end": { "line": 4, "character": 5 } },
+                        "selectionRange": { "start": { "line": 2, "character": 7 }, "end": { "line": 2, "character": 10 } }
+                    },
+                    {
+                        "name": "baz",
+                        "kind": 6,
+                        "range": { "start": { "line": 6, "character": 4 }, "end": { "line": 8, "character": 5 } },
+                        "selectionRange": { "start": { "line": 6, "character": 7 }, "end": { "line": 6, "character": 10 } }
+                    }
+                ]
+            },
+            {
+                "name": "top",
+                "kind": 12, // function
+                "range": { "start": { "line": 12, "character": 0 }, "end": { "line": 14, "character": 1 } },
+                "selectionRange": { "start": { "line": 12, "character": 3 }, "end": { "line": 12, "character": 6 } }
+            }
+        ]
+    });
+    handle_document_symbols_response(&json, &s);
+    let syms = s.lock().unwrap().document_symbols.clone();
+    assert_eq!(syms.len(), 4, "esperaba 4 entradas flattening");
+
+    assert_eq!(syms[0].name, "Foo");
+    assert_eq!(syms[0].kind, "struct");
+    assert_eq!(syms[0].line, 0);
+    assert_eq!(syms[0].depth, 0);
+    assert_eq!(syms[0].container, None);
+
+    assert_eq!(syms[1].name, "bar");
+    assert_eq!(syms[1].kind, "method");
+    assert_eq!(syms[1].line, 2);
+    assert_eq!(syms[1].depth, 1);
+    assert_eq!(syms[1].container.as_deref(), Some("Foo"));
+
+    assert_eq!(syms[2].name, "baz");
+    assert_eq!(syms[2].depth, 1);
+    assert_eq!(syms[2].container.as_deref(), Some("Foo"));
+
+    assert_eq!(syms[3].name, "top");
+    assert_eq!(syms[3].kind, "fn");
+    assert_eq!(syms[3].depth, 0);
+}
+
+#[test]
+fn handle_document_symbols_legacy_symbolinformation() {
+    let s = make_state();
+    // Formato viejo: SymbolInformation[] (plano + location).
+    let json = serde_json::json!({
+        "id": 1,
+        "result": [
+            {
+                "name": "main",
+                "kind": 12,
+                "location": {
+                    "uri": "file:///tmp/x.rs",
+                    "range": { "start": { "line": 0, "character": 3 }, "end": { "line": 0, "character": 7 } }
+                }
+            },
+            {
+                "name": "helper",
+                "kind": 12,
+                "containerName": "main",
+                "location": {
+                    "uri": "file:///tmp/x.rs",
+                    "range": { "start": { "line": 5, "character": 3 }, "end": { "line": 5, "character": 9 } }
+                }
+            }
+        ]
+    });
+    handle_document_symbols_response(&json, &s);
+    let syms = s.lock().unwrap().document_symbols.clone();
+    assert_eq!(syms.len(), 2);
+    assert_eq!(syms[1].name, "helper");
+    assert_eq!(syms[1].container.as_deref(), Some("main"));
+}
+
+#[test]
+fn handle_references_response_array() {
+    let s = make_state();
+    let json = serde_json::json!({
+        "id": 1,
+        "result": [
+            { "uri": "file:///tmp/a.rs", "range": { "start": { "line": 1, "character": 2 }, "end": { "line": 1, "character": 5 } } },
+            { "uri": "file:///tmp/b.rs", "range": { "start": { "line": 10, "character": 0 }, "end": { "line": 10, "character": 3 } } }
+        ]
+    });
+    handle_references_response(&json, &s);
+    let refs = s.lock().unwrap().references.clone();
+    assert_eq!(refs.len(), 2);
+    assert_eq!(refs[0].path, PathBuf::from("/tmp/a.rs"));
+    assert_eq!(refs[0].line, 1);
+    assert_eq!(refs[1].path, PathBuf::from("/tmp/b.rs"));
+    assert_eq!(refs[1].line, 10);
+}
+
+#[test]
+fn parse_signature_help_basic() {
+    let result = serde_json::json!({
+        "signatures": [{
+            "label": "fn foo(x: i32, y: String) -> u64",
+            "parameters": [
+                { "label": "x: i32" },
+                { "label": "y: String" }
+            ]
+        }],
+        "activeSignature": 0,
+        "activeParameter": 1
+    });
+    let info = parse_signature_help(&result).unwrap();
+    assert_eq!(info.label, "fn foo(x: i32, y: String) -> u64");
+    assert_eq!(info.active_param, 1);
+    assert_eq!(info.param_labels, vec!["x: i32", "y: String"]);
+}
+
+#[test]
+fn parse_signature_help_offset_label() {
+    // Label como [start, end] dentro del label de la firma.
+    let result = serde_json::json!({
+        "signatures": [{
+            "label": "foo(x, y)",
+            "parameters": [
+                { "label": [4, 5] },
+                { "label": [7, 8] }
+            ]
+        }]
+    });
+    let info = parse_signature_help(&result).unwrap();
+    assert_eq!(info.param_labels, vec!["x", "y"]);
+}
+
+#[test]
+fn parse_text_edit_basic() {
+    let v = serde_json::json!({
+        "range": {
+            "start": { "line": 1, "character": 0 },
+            "end":   { "line": 1, "character": 4 }
+        },
+        "newText": "let "
+    });
+    let e = parse_text_edit(&v).unwrap();
+    assert_eq!(e.start_line, 1);
+    assert_eq!(e.start_col, 0);
+    assert_eq!(e.end_line, 1);
+    assert_eq!(e.end_col, 4);
+    assert_eq!(e.new_text, "let ");
+}
+
+#[test]
+fn handle_text_edits_response_array() {
+    let s = make_state();
+    let json = serde_json::json!({
+        "id": 1,
+        "result": [
+            { "range": { "start": { "line": 0, "character": 0 }, "end": { "line": 0, "character": 3 } }, "newText": "fn " },
+            { "range": { "start": { "line": 1, "character": 4 }, "end": { "line": 1, "character": 5 } }, "newText": "" }
+        ]
+    });
+    handle_text_edits_response(&json, &s);
+    let edits = s.lock().unwrap().text_edits.clone();
+    assert_eq!(edits.len(), 2);
+}
+
+#[test]
+fn handle_definition_location_simple() {
+    let s = make_state();
+    let json = serde_json::json!({
+        "id": 1,
+        "result": {
+            "uri": "file:///tmp/x.rs",
+            "range": {
+                "start": { "line": 10, "character": 4 },
+                "end":   { "line": 10, "character": 9 }
+            }
+        }
+    });
+    handle_definition_response(&json, &s);
+    let d = s.lock().unwrap().definition.clone().unwrap();
+    assert_eq!(d.path, PathBuf::from("/tmp/x.rs"));
+    assert_eq!(d.line, 10);
+    assert_eq!(d.col, 4);
+}
+
+#[test]
+fn handle_definition_location_link_array() {
+    let s = make_state();
+    let json = serde_json::json!({
+        "id": 1,
+        "result": [
+            {
+                "targetUri": "file:///tmp/y.rs",
+                "targetSelectionRange": {
+                    "start": { "line": 0, "character": 7 },
+                    "end":   { "line": 0, "character": 12 }
+                }
+            }
+        ]
+    });
+    handle_definition_response(&json, &s);
+    let d = s.lock().unwrap().definition.clone().unwrap();
+    assert_eq!(d.path, PathBuf::from("/tmp/y.rs"));
+    assert_eq!(d.line, 0);
+    assert_eq!(d.col, 7);
+}
+
+#[test]
+fn rust_analyzer_client_sin_binary_no_panic() {
+    // Si rust-analyzer no está instalado, el spawn falla en silencio
+    // y el client queda en modo no-op (state vacío).
+    let c = RustAnalyzerClient::with_command(PathBuf::from("/tmp"), "rust-analyzer-missing-99999");
+    // diagnostics() siempre devuelve vacío hasta que el server responde.
+    assert!(c.diagnostics(&PathBuf::from("/tmp/x")).is_empty());
+}
diff --git a/widgets/text-editor/Cargo.toml b/widgets/text-editor/Cargo.toml
new file mode 100644
index 0000000..ba99f03
--- /dev/null
+++ b/widgets/text-editor/Cargo.toml
@@ -0,0 +1,18 @@
+[package]
+name = "llimphi-widget-text-editor"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-text-editor — capa visual Llimphi del editor de código (gutter, caret, selección, scroll, integración de teclado al update Elm). El núcleo agnóstico (buffer/cursor/ops/undo/highlight/…) vive en llimphi-widget-text-editor-core y se re-exporta. LSP queda para una capa superior."
+
+[dependencies]
+llimphi-widget-text-editor-core = { workspace = true }
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+# state.rs construye tree_sitter::InputEdit/Point para alimentar el
+# parsing incremental del núcleo (el resto de tree-sitter vive en core).
+tree-sitter = { workspace = true }
+
+[dev-dependencies]
diff --git a/widgets/text-editor/LEEME.md b/widgets/text-editor/LEEME.md
new file mode 100644
index 0000000..85de610
--- /dev/null
+++ b/widgets/text-editor/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-text-editor
+
+> Editor de código (rope · cursor · undo · highlight · clipboard · find) para [llimphi](../../README.md).
+
+Rope con `crop` o `xi-rope` interno (eficiente para edits grandes). Cursores múltiples opcionales, syntax highlight (tree-sitter), clipboard real (`arboard`), find/replace con regex, undo grouped. Base de `nada`, `pluma-editor`, `pluma-notebook`, `nakui-sheet`.
diff --git a/widgets/text-editor/README.md b/widgets/text-editor/README.md
new file mode 100644
index 0000000..d45991d
--- /dev/null
+++ b/widgets/text-editor/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-text-editor
+
+> Code editor (rope · cursor · undo · highlight · clipboard · find) for [llimphi](../../README.md).
+
+Internal rope with `crop` or `xi-rope` (efficient for large edits). Optional multi-cursor, syntax highlight (tree-sitter), real clipboard (`arboard`), regex find/replace, grouped undo. Foundation of `nada`, `pluma-editor`, `pluma-notebook`, `nakui-sheet`.
diff --git a/widgets/text-editor/src/lib.rs b/widgets/text-editor/src/lib.rs
new file mode 100644
index 0000000..e43625d
--- /dev/null
+++ b/widgets/text-editor/src/lib.rs
@@ -0,0 +1,68 @@
+//! `llimphi-widget-text-editor` — editor de código multilínea para Llimphi.
+//!
+//! Capa visual sobre el núcleo agnóstico [`llimphi_widget_text_editor_core`]:
+//!
+//! - El **núcleo** (`buffer`/`cursor`/`ops`/`undo`/`bracket`/`find`/
+//!   `diagnostics`/`clipboard`/`highlight`) es puro — sin IO, sin Llimphi,
+//!   sin GPU — y se re-exporta aquí tal cual, de modo que los consumidores
+//!   históricos (`crate::cursor::Pos`, `crate::Buffer`, …) siguen resolviendo
+//!   sin cambios.
+//! - [`state`] — el [`EditorState`] que une todo + `apply_key` para integrar
+//!   al `update` Elm (depende de los tipos de teclado de `llimphi-ui`).
+//! - [`view`] — renderizado multilínea con gutter, caret, selección, scroll.
+//!
+//! El split núcleo/widget permite tests amplios del core y reutilizar la
+//! lógica de edición desde un TUI, un `text-input` single-line, una
+//! mini-REPL o un backend web, sin arrastrar `wgpu`/`vello`.
+
+#![forbid(unsafe_code)]
+
+// Núcleo agnóstico re-exportado como módulos del crate: mantiene viva la
+// ruta `crate::<mod>::…` que usan `state`/`view` y los consumidores externos.
+pub use llimphi_widget_text_editor_core::{
+    bracket, buffer, clipboard, cursor, diagnostics, find, highlight, ops, undo,
+};
+
+// Capa Llimphi propia de este widget.
+pub mod state;
+pub mod view;
+
+pub use buffer::Buffer;
+pub use clipboard::{Clipboard, MemClipboard, NullClipboard};
+pub use cursor::{Cursor, Pos, Selection};
+pub use diagnostics::{Diagnostic, DiagnosticRange, Severity};
+pub use find::{all_matches, find_next, find_prev, FindState};
+pub use highlight::{Highlighter, Language, Span, SyntaxPalette, TokenKind};
+pub use ops::{indent_str, EditDelta};
+pub use state::{ApplyResult, EditorOptions, EditorState};
+pub use undo::UndoStack;
+pub use view::{
+    text_editor_view, text_editor_view_full, text_editor_view_highlighted, EditorMetrics,
+    EditorPalette, GutterStyle, PointerEvent,
+};
+
+use llimphi_ui::llimphi_raster::peniko::Color;
+
+/// Paleta de syntax highlighting dark — deriva de un [`llimphi_theme::Theme`]
+/// + colores hardcoded para las categorías que el theme no expone como
+/// slots semánticos (string, number, keyword, …).
+///
+/// Vive en el widget (no en el núcleo) porque es el único punto que toca
+/// `llimphi-theme`; el núcleo se queda con el modelo de color puro.
+pub fn syntax_palette_dark(theme: &llimphi_theme::Theme) -> SyntaxPalette {
+    fn rgb(r: u8, g: u8, b: u8) -> Color {
+        Color::from_rgb8(r, g, b)
+    }
+    SyntaxPalette {
+        keyword: rgb(198, 120, 221),     // morado: keywords
+        typ: rgb(229, 192, 123),         // amarillo cálido: tipos
+        function: rgb(97, 175, 239),     // azul: funciones
+        string: rgb(152, 195, 121),      // verde: strings
+        number: rgb(209, 154, 102),      // naranja: números
+        comment: theme.fg_muted,         // muted: comentarios
+        operator: theme.fg_text,
+        punctuation: theme.fg_muted,
+        identifier: theme.fg_text,
+        other: theme.fg_text,
+    }
+}
diff --git a/widgets/text-editor/src/state.rs b/widgets/text-editor/src/state.rs
new file mode 100644
index 0000000..e13f66a
--- /dev/null
+++ b/widgets/text-editor/src/state.rs
@@ -0,0 +1,1258 @@
+//! [`EditorState`] — la unión de buffer + cursor + undo + opciones, con
+//! `apply_key` que mapea un `KeyEvent` de llimphi-ui a operaciones de
+//! edición o movimiento. Este es el tipo que el caller pone en su
+//! `Model` y mete en el `update` Elm.
+
+use std::cell::RefCell;
+
+use llimphi_ui::{Key, KeyEvent, KeyState, NamedKey};
+
+use crate::buffer::Buffer;
+use crate::clipboard::{Clipboard, NullClipboard};
+use crate::cursor::{Cursor, Pos};
+use crate::highlight::{Highlighter, Language, Span};
+use crate::ops::{
+    dedent, delete_backward, delete_forward, indent_or_insert_tab,
+    insert_newline_auto_indent, replace_selection,
+};
+use crate::undo::UndoStack;
+
+/// Opciones del editor — afectan indent + límite de undo + page size.
+#[derive(Debug, Clone, Copy)]
+pub struct EditorOptions {
+    /// `true` = Tab inserta `indent_size` spaces; `false` = inserta `\t`.
+    pub tab_to_spaces: bool,
+    pub indent_size: usize,
+    /// Cuántas líneas avanza PageUp/PageDown.
+    pub page_size: usize,
+    /// `true` = Enter no inserta `\n`; el caller maneja submit. (modo
+    /// single-line para el text-input refactorizado).
+    pub single_line: bool,
+}
+
+impl Default for EditorOptions {
+    fn default() -> Self {
+        Self {
+            tab_to_spaces: true,
+            indent_size: 2,
+            page_size: 12,
+            single_line: false,
+        }
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct EditorState {
+    pub buffer: Buffer,
+    /// Cursor primario — el que la API legacy expone como "el" cursor.
+    /// Edit ops aplican al primary + todos los `extra_cursors` en orden.
+    pub cursor: Cursor,
+    /// Cursores adicionales (multi-cursor). Vacío en el caso típico.
+    /// Cuando hay extras, las ediciones aplican a todos; Esc los colapsa
+    /// dejando sólo el primary.
+    pub extra_cursors: Vec<Cursor>,
+    /// Diagnostics del LSP (o equivalente). El client externo los popa
+    /// vía `set_diagnostics`; el render del editor los pinta como
+    /// subrayado bajo el rango con color según severity.
+    pub diagnostics: Vec<crate::diagnostics::Diagnostic>,
+    pub options: EditorOptions,
+    /// Líneas-guarda: índices ordenados (ascendente, sin duplicados) de
+    /// líneas que el caret no puede ocupar y que el gutter no numera.
+    /// El widget no decide qué es guarda — lo decide el caller (el
+    /// `cuerpo_ide` lo computa a partir de la estructura de átomos +
+    /// flags de fusión). La lista debe mantenerse al día tras cada
+    /// edición que cambie la cantidad o posición de líneas: el caller
+    /// es responsable de actualizar este campo cuando reaccione a
+    /// `Changed`. Vacío = sin guardas, comportamiento clásico de IDE.
+    pub guard_lines: Vec<usize>,
+    /// Tinte de fondo por línea. `line_tints[i]` controla la línea
+    /// `i` del buffer: `Some(color)` pinta un rectángulo del ancho
+    /// completo del área de contenido al ALPHA del color, **debajo**
+    /// del texto y de cualquier highlight; `None` deja la línea sin
+    /// tinte. Vacío o ausente = sin tintes (modo IDE clásico). Pensado
+    /// para colorear zonas en editores narrativos sin afectar la
+    /// lectura — los callers deben elegir colores con alpha bajo (≤
+    /// ~40/255 sobre el bg).
+    pub line_tints: Vec<Option<llimphi_ui::llimphi_raster::peniko::Color>>,
+    pub undo: UndoStack,
+    /// Línea inicial visible — el viewport renderiza
+    /// `[scroll_offset, scroll_offset + visible)`. El caller llama a
+    /// [`Self::ensure_caret_visible`] tras movimientos para auto-scrollear.
+    pub scroll_offset: usize,
+    /// Contador monotónico que se incrementa con cada edición del buffer.
+    /// Lo usa el cache de highlight para invalidarse sin re-hashear el
+    /// texto entero por frame.
+    pub edit_seq: u64,
+    /// InputEdits que el editor produjo y todavía no fueron aplicados
+    /// al `Tree` cached del highlighter. El highlight, antes de
+    /// reparsear, los drena y los aplica al tree → parseo incremental
+    /// real (tree-sitter sólo reconstruye los subtrees afectados).
+    pub pending_input_edits: RefCell<Vec<tree_sitter::InputEdit>>,
+    /// Cache memoizado del syntax highlight. Interior mutability vía
+    /// `RefCell` para que el view (que recibe `&EditorState`) lo
+    /// actualice on-demand. Se invalida cuando cambian `edit_seq` o el
+    /// `Language` solicitado.
+    pub highlight_cache: RefCell<Option<HighlightCache>>,
+}
+
+/// Entrada del cache: spans por línea + clave que la generó.
+#[derive(Debug, Clone)]
+pub struct HighlightCache {
+    pub seq: u64,
+    pub language: Language,
+    pub spans: Vec<Vec<Span>>,
+}
+
+impl Default for EditorState {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl EditorState {
+    pub fn new() -> Self {
+        Self {
+            buffer: Buffer::new(),
+            cursor: Cursor::new(),
+            extra_cursors: Vec::new(),
+            diagnostics: Vec::new(),
+            options: EditorOptions::default(),
+            guard_lines: Vec::new(),
+            line_tints: Vec::new(),
+            undo: UndoStack::new(),
+            scroll_offset: 0,
+            edit_seq: 0,
+            pending_input_edits: RefCell::new(Vec::new()),
+            highlight_cache: RefCell::new(None),
+        }
+    }
+
+    /// Devuelve todos los cursores en orden: primary + extras. Útil para
+    /// el render que dibuja un caret + selección por cada uno.
+    pub fn all_cursors(&self) -> impl Iterator<Item = &Cursor> {
+        std::iter::once(&self.cursor).chain(self.extra_cursors.iter())
+    }
+
+    /// Agrega un cursor adicional con caret en `(line, col)`. Si ya hay
+    /// un cursor exactamente ahí, no duplica.
+    pub fn add_cursor_at(&mut self, line: usize, col: usize) {
+        let line = line.min(self.buffer.len_lines().saturating_sub(1));
+        let col = col.min(self.buffer.line_len_chars(line));
+        let pos = Pos::new(line, col);
+        if self.cursor.caret == pos {
+            return;
+        }
+        if self.extra_cursors.iter().any(|c| c.caret == pos) {
+            return;
+        }
+        self.extra_cursors.push(Cursor::at(line, col));
+    }
+
+    /// Colapsa multi-cursor: descarta los `extra_cursors`. No toca el
+    /// primary.
+    pub fn collapse_to_primary(&mut self) {
+        self.extra_cursors.clear();
+    }
+
+    pub fn has_multi_cursor(&self) -> bool {
+        !self.extra_cursors.is_empty()
+    }
+
+    /// Reemplaza los diagnostics del editor. Usado por el client LSP
+    /// cuando recibe `textDocument/publishDiagnostics`.
+    pub fn set_diagnostics(&mut self, diags: Vec<crate::diagnostics::Diagnostic>) {
+        self.diagnostics = diags;
+    }
+
+    pub fn with_options(options: EditorOptions) -> Self {
+        Self {
+            options,
+            ..Self::new()
+        }
+    }
+
+    /// Ajusta `scroll_offset` para que la línea del caret quede dentro
+    /// de `[scroll_offset, scroll_offset + visible_lines)`. Si el caret
+    /// está arriba, scrollea para arriba; si está abajo, scrollea para
+    /// abajo dejando el caret en la última línea visible.
+    pub fn ensure_caret_visible(&mut self, visible_lines: usize) {
+        if visible_lines == 0 {
+            return;
+        }
+        let line = self.cursor.caret.line;
+        if line < self.scroll_offset {
+            self.scroll_offset = line;
+        } else if line >= self.scroll_offset + visible_lines {
+            self.scroll_offset = line + 1 - visible_lines;
+        }
+        // Clampea al rango válido — no scrollear más allá del fin del
+        // buffer (deja la última línea siempre visible).
+        let max_scroll = self.line_count().saturating_sub(1);
+        if self.scroll_offset > max_scroll {
+            self.scroll_offset = max_scroll;
+        }
+    }
+
+    /// Scrollea relativo (positivo = abajo). Clampea a 0..line_count-1.
+    pub fn scroll_by(&mut self, delta: i32) {
+        let new = (self.scroll_offset as i32 + delta).max(0) as usize;
+        let max = self.line_count().saturating_sub(1);
+        self.scroll_offset = new.min(max);
+    }
+
+    pub fn text(&self) -> String {
+        self.buffer.text()
+    }
+
+    pub fn set_text(&mut self, s: &str) {
+        self.buffer.set_text(s);
+        // Las guardas y tintes previos referían al texto viejo:
+        // limpiar. El caller los repuebla cuando reaccione al cambio.
+        self.guard_lines.clear();
+        self.line_tints.clear();
+        // Clampea el caret a la nueva longitud.
+        let last_line = self.buffer.len_lines().saturating_sub(1);
+        let col = self.buffer.line_len_chars(last_line);
+        self.cursor = Cursor::at(last_line, col);
+        self.undo.clear();
+        self.bump_edit_seq();
+        // Cambio masivo de buffer — el árbol cached del highlighter
+        // queda inválido. Lo borramos para forzar full parse próximo.
+        for lang in [Language::Rust, Language::Python] {
+            crate::highlight::invalidate_tree_cache(lang);
+        }
+    }
+
+    /// Incrementa el contador de ediciones — invalidando el cache de
+    /// highlight automáticamente.
+    pub fn bump_edit_seq(&mut self) {
+        self.edit_seq = self.edit_seq.wrapping_add(1);
+    }
+
+    /// Devuelve los spans del highlight cacheados. Si el cache no matchea
+    /// (distinto `edit_seq` o `language`), reparsea con tree-sitter
+    /// incremental — aplica los `pending_input_edits` al tree previo
+    /// antes de parsear, y guarda el nuevo tree.
+    pub fn highlighted_spans(&self, language: Language) -> Vec<Vec<Span>> {
+        if matches!(language, Language::Plain) {
+            return Vec::new();
+        }
+        let mut cache = self.highlight_cache.borrow_mut();
+        if let Some(c) = cache.as_ref() {
+            if c.seq == self.edit_seq && c.language == language {
+                return c.spans.clone();
+            }
+        }
+        // Aplica los InputEdits pending al tree cached antes de parsear
+        // — eso convierte el parseo de "full" a "incremental real".
+        let edits: Vec<tree_sitter::InputEdit> =
+            self.pending_input_edits.borrow_mut().drain(..).collect();
+        crate::highlight::apply_pending_edits(language, &edits);
+
+        let mut h = Highlighter::new(language);
+        let spans = h.highlight(&self.buffer.text());
+        *cache = Some(HighlightCache {
+            seq: self.edit_seq,
+            language,
+            spans: spans.clone(),
+        });
+        spans
+    }
+
+    pub fn is_empty(&self) -> bool {
+        self.buffer.is_empty()
+    }
+
+    pub fn line_count(&self) -> usize {
+        self.buffer.len_lines()
+    }
+
+    /// Posiciona el caret en `(line, col)`, clampeando al rango válido
+    /// del buffer. Colapsa la selección. Usado por el caller cuando el
+    /// usuario clickea en el área de texto.
+    ///
+    /// Si la línea destino está en [`Self::guard_lines`], el caret
+    /// salta a la línea no-guarda más cercana (privilegia hacia
+    /// abajo). Así un click "en la franja entre zonas" aterriza en el
+    /// inicio de la zona siguiente.
+    pub fn set_caret_at(&mut self, line: usize, col: usize) {
+        self.cursor.set_caret(&self.buffer, Pos::new(line, col));
+        if !self.guard_lines.is_empty() {
+            snap_cursor_off_guard(&mut self.cursor, &self.buffer, &self.guard_lines, 0);
+        }
+    }
+
+    /// `true` si la línea `line` figura en `guard_lines`.
+    pub fn is_guard_line(&self, line: usize) -> bool {
+        self.guard_lines.binary_search(&line).is_ok()
+    }
+
+    /// Reemplaza la lista de líneas-guarda. La entrada se ordena y
+    /// deduplica — el caller puede pasarlas en cualquier orden. Tras
+    /// el cambio NO se snappea el caret automáticamente: si tu nueva
+    /// lista deja al caret sobre una guarda, llamá a
+    /// [`Self::snap_off_guards`] explícitamente.
+    pub fn set_guard_lines(&mut self, mut lines: Vec<usize>) {
+        lines.sort_unstable();
+        lines.dedup();
+        self.guard_lines = lines;
+    }
+
+    /// Salta el primary cursor + extras fuera de cualquier línea
+    /// guarda. `dir` orienta la búsqueda: `+1` busca primero abajo,
+    /// `-1` arriba, `0` igual a `+1` (con fallback al opuesto).
+    /// No-op si `guard_lines` está vacío.
+    pub fn snap_off_guards(&mut self, dir: i32) {
+        if self.guard_lines.is_empty() {
+            return;
+        }
+        snap_cursor_off_guard(&mut self.cursor, &self.buffer, &self.guard_lines, dir);
+        for c in &mut self.extra_cursors {
+            snap_cursor_off_guard(c, &self.buffer, &self.guard_lines, dir);
+        }
+    }
+
+    /// Extiende la selección hasta `(line, col)`. Si no había anchor,
+    /// lo planta en el caret actual antes de mover. Usado por drag del
+    /// mouse: cada `Move` del drag llama esto con la nueva pos.
+    pub fn extend_selection_to(&mut self, line: usize, col: usize) {
+        let line = line.min(self.buffer.len_lines().saturating_sub(1));
+        let col = col.min(self.buffer.line_len_chars(line));
+        if self.cursor.anchor.is_none() {
+            self.cursor.anchor = Some(self.cursor.caret);
+        }
+        self.cursor.caret = Pos::new(line, col);
+        self.cursor.desired_col = col;
+    }
+
+    /// Selecciona todo el buffer: anchor en `(0,0)`, caret al final de
+    /// la última línea. Colapsa los multi-cursor extras. Operación de
+    /// sólo-cursor (no edita) — la usan el menú de edición y Ctrl+A.
+    pub fn select_all(&mut self) {
+        self.collapse_to_primary();
+        let last_line = self.buffer.len_lines().saturating_sub(1);
+        let last_col = self.buffer.line_len_chars(last_line);
+        self.cursor.anchor = Some(Pos::ORIGIN);
+        self.cursor.caret = Pos::new(last_line, last_col);
+        self.cursor.desired_col = last_col;
+    }
+
+    /// `true` si hay algo que deshacer (para habilitar "Deshacer" en el
+    /// menú de edición).
+    pub fn can_undo(&self) -> bool {
+        self.undo.can_undo()
+    }
+
+    /// `true` si hay algo que rehacer.
+    pub fn can_redo(&self) -> bool {
+        self.undo.can_redo()
+    }
+
+    /// `true` si hay una selección no-vacía (para habilitar Cortar/
+    /// Copiar/Eliminar en el menú de edición).
+    pub fn has_selection(&self) -> bool {
+        self.cursor.has_selection()
+    }
+
+    /// Texto seleccionado, si hay selección no-vacía. `None` cuando el
+    /// cursor está colapsado.
+    pub fn selected_text(&self) -> Option<String> {
+        if !self.cursor.has_selection() {
+            return None;
+        }
+        let (s, e) = self.cursor.selection_range(&self.buffer);
+        if s == e {
+            return None;
+        }
+        Some(self.buffer.slice(s, e))
+    }
+
+    /// Resultado: `Changed` si la tecla modificó el buffer o el cursor;
+    /// `Ignored` si la tecla no aplica al editor. Útil para que el
+    /// caller decida si rebuildear el view.
+    ///
+    /// Copy/cut/paste (Ctrl+C/X/V) son ignorados — para habilitarlos,
+    /// usá [`Self::apply_key_with_clipboard`] pasando un backend.
+    pub fn apply_key(&mut self, event: &KeyEvent) -> ApplyResult {
+        self.apply_key_with_clipboard(event, &mut NullClipboard)
+    }
+
+    /// Como [`Self::apply_key`] pero con backend de clipboard activo:
+    /// Ctrl+C copia la selección, Ctrl+X la corta, Ctrl+V pega lo que
+    /// haya en el clipboard.
+    pub fn apply_key_with_clipboard(
+        &mut self,
+        event: &KeyEvent,
+        clipboard: &mut dyn Clipboard,
+    ) -> ApplyResult {
+        // Antes de aplicar la tecla guardamos la línea del primary
+        // cursor: si la edición/movimiento termina parando en una
+        // guarda, la dirección del salto es la diferencia
+        // post-pre. Up → snap arriba, Down → snap abajo, click/edit
+        // en el mismo sitio → snap abajo por default.
+        let pre_line = self.cursor.caret.line as i32;
+        let r = self.apply_key_inner(event, clipboard);
+        if r.changed() {
+            self.bump_edit_seq();
+        }
+        if r.touched() && !self.guard_lines.is_empty() && !self.cursor.has_selection() {
+            // Si hay selección viva (shift+arrow / drag) no snappeamos:
+            // el usuario está seleccionando a través de la guarda y
+            // forzar el caret afuera rompería la selección.
+            let dir = (self.cursor.caret.line as i32 - pre_line).signum();
+            self.snap_off_guards(dir);
+        }
+        r
+    }
+
+    fn apply_key_inner(
+        &mut self,
+        event: &KeyEvent,
+        clipboard: &mut dyn Clipboard,
+    ) -> ApplyResult {
+        if event.state != KeyState::Pressed {
+            return ApplyResult::Ignored;
+        }
+        let extending = event.modifiers.shift;
+        let ctrl = event.modifiers.ctrl || event.modifiers.meta;
+        let alt = event.modifiers.alt;
+
+        // Esc colapsa multi-cursor (sin extras = ignorado, el caller
+        // decide qué más hacer — cancelar edit, cerrar find, etc.).
+        if matches!(&event.key, Key::Named(NamedKey::Escape)) {
+            if self.has_multi_cursor() {
+                self.collapse_to_primary();
+                return ApplyResult::CursorMoved;
+            }
+            return ApplyResult::Ignored;
+        }
+
+        // Multi-cursor: Ctrl+Alt+ArrowDown/Up agrega un cursor en la
+        // línea siguiente/anterior usando la misma desired_col. Esc del
+        // caller debería colapsar — no lo manejamos acá porque el caller
+        // puede querer usar Esc para otras cosas (cerrar find, cancelar
+        // edit). El caller chequea has_multi_cursor() antes.
+        if ctrl && alt {
+            match &event.key {
+                Key::Named(NamedKey::ArrowDown) => {
+                    let line = self.cursor.caret.line + 1;
+                    if line < self.buffer.len_lines() {
+                        self.add_cursor_at(line, self.cursor.desired_col);
+                        return ApplyResult::CursorMoved;
+                    }
+                    return ApplyResult::Ignored;
+                }
+                Key::Named(NamedKey::ArrowUp) => {
+                    if self.cursor.caret.line > 0 {
+                        self.add_cursor_at(self.cursor.caret.line - 1, self.cursor.desired_col);
+                        return ApplyResult::CursorMoved;
+                    }
+                    return ApplyResult::Ignored;
+                }
+                _ => {}
+            }
+        }
+
+        let page = self.options.page_size;
+        match &event.key {
+            // Movimiento
+            Key::Named(NamedKey::ArrowLeft) => {
+                if ctrl {
+                    self.apply_move_all(|b, c| c.move_word_left(b, extending));
+                } else {
+                    self.apply_move_all(|b, c| c.move_left(b, extending));
+                }
+                ApplyResult::CursorMoved
+            }
+            Key::Named(NamedKey::ArrowRight) => {
+                if ctrl {
+                    self.apply_move_all(|b, c| c.move_word_right(b, extending));
+                } else {
+                    self.apply_move_all(|b, c| c.move_right(b, extending));
+                }
+                ApplyResult::CursorMoved
+            }
+            Key::Named(NamedKey::ArrowUp) => {
+                self.apply_move_all(|b, c| c.move_up(b, extending));
+                ApplyResult::CursorMoved
+            }
+            Key::Named(NamedKey::ArrowDown) => {
+                self.apply_move_all(|b, c| c.move_down(b, extending));
+                ApplyResult::CursorMoved
+            }
+            Key::Named(NamedKey::Home) => {
+                if ctrl {
+                    self.apply_move_all(|b, c| c.move_doc_start(b, extending));
+                } else {
+                    self.apply_move_all(|b, c| c.move_home(b, extending));
+                }
+                ApplyResult::CursorMoved
+            }
+            Key::Named(NamedKey::End) => {
+                if ctrl {
+                    self.apply_move_all(|b, c| c.move_doc_end(b, extending));
+                } else {
+                    self.apply_move_all(|b, c| c.move_end(b, extending));
+                }
+                ApplyResult::CursorMoved
+            }
+            Key::Named(NamedKey::PageUp) => {
+                self.apply_move_all(|b, c| c.move_page_up(b, extending, page));
+                ApplyResult::CursorMoved
+            }
+            Key::Named(NamedKey::PageDown) => {
+                self.apply_move_all(|b, c| c.move_page_down(b, extending, page));
+                ApplyResult::CursorMoved
+            }
+
+            // Edición
+            Key::Named(NamedKey::Enter) => {
+                if self.options.single_line {
+                    return ApplyResult::Ignored;
+                }
+                self.apply_edit_all(|b, c, _opts| Some(insert_newline_auto_indent(b, c)));
+                ApplyResult::Changed
+            }
+            Key::Named(NamedKey::Backspace) => {
+                if self.apply_edit_all(|b, c, _opts| delete_backward(b, c)) {
+                    ApplyResult::Changed
+                } else {
+                    ApplyResult::Ignored
+                }
+            }
+            Key::Named(NamedKey::Delete) => {
+                if self.apply_edit_all(|b, c, _opts| delete_forward(b, c)) {
+                    ApplyResult::Changed
+                } else {
+                    ApplyResult::Ignored
+                }
+            }
+            Key::Named(NamedKey::Tab) => {
+                let any = if extending {
+                    self.apply_edit_all(|b, c, opts| {
+                        dedent(b, c, opts.tab_to_spaces, opts.indent_size)
+                    })
+                } else {
+                    self.apply_edit_all(|b, c, opts| {
+                        Some(indent_or_insert_tab(b, c, opts.tab_to_spaces, opts.indent_size))
+                    })
+                };
+                if any { ApplyResult::Changed } else { ApplyResult::Ignored }
+            }
+
+            // Clipboard
+            Key::Character(s) if ctrl && s.as_str().eq_ignore_ascii_case("c") => {
+                if let Some(text) = self.selected_text() {
+                    clipboard.set(&text);
+                    ApplyResult::CursorMoved
+                } else {
+                    ApplyResult::Ignored
+                }
+            }
+            Key::Character(s) if ctrl && s.as_str().eq_ignore_ascii_case("x") => {
+                if let Some(text) = self.selected_text() {
+                    clipboard.set(&text);
+                    let d = replace_selection(&mut self.buffer, &mut self.cursor, "");
+                    self.undo.push(d);
+                    ApplyResult::Changed
+                } else {
+                    ApplyResult::Ignored
+                }
+            }
+            Key::Character(s) if ctrl && s.as_str().eq_ignore_ascii_case("v") => {
+                let Some(text) = clipboard.get() else {
+                    return ApplyResult::Ignored;
+                };
+                if text.is_empty() {
+                    return ApplyResult::Ignored;
+                }
+                // En single-line, los `\n` del clipboard se aplanan.
+                let to_insert = if self.options.single_line {
+                    text.replace(['\n', '\r'], " ")
+                } else {
+                    text
+                };
+                let d = replace_selection(&mut self.buffer, &mut self.cursor, &to_insert);
+                self.undo.push(d);
+                ApplyResult::Changed
+            }
+
+            // Undo / Redo
+            Key::Character(s) if ctrl && s.as_str().eq_ignore_ascii_case("z") => {
+                let did = if extending {
+                    self.undo.redo(&mut self.buffer, &mut self.cursor)
+                } else {
+                    self.undo.undo(&mut self.buffer, &mut self.cursor)
+                };
+                if did { ApplyResult::Changed } else { ApplyResult::Ignored }
+            }
+            Key::Character(s) if ctrl && s.as_str().eq_ignore_ascii_case("y") => {
+                let did = self.undo.redo(&mut self.buffer, &mut self.cursor);
+                if did { ApplyResult::Changed } else { ApplyResult::Ignored }
+            }
+
+            // Inserción de chars imprimibles vía event.text (respeta IME +
+            // layouts no-US). Ignoramos cuando ctrl/meta están activos
+            // para no comernos Ctrl+S, Ctrl+C, etc. (eso lo hace el
+            // caller registrando shortcuts).
+            _ => {
+                if ctrl {
+                    return ApplyResult::Ignored;
+                }
+                let Some(text) = event.text.as_ref() else {
+                    return ApplyResult::Ignored;
+                };
+                if text.is_empty() || text.chars().any(|c| c.is_control()) {
+                    return ApplyResult::Ignored;
+                }
+                let text = text.clone();
+                self.apply_edit_all(|b, c, _opts| Some(replace_selection(b, c, &text)));
+                ApplyResult::Changed
+            }
+        }
+    }
+
+    // ----- Multi-cursor helpers -----
+
+    /// Aplica un movimiento (no edita el buffer) a todos los cursores:
+    /// primary + extras. Después dedupa para evitar cursores que terminan
+    /// en el mismo punto.
+    fn apply_move_all<F>(&mut self, mut f: F)
+    where
+        F: FnMut(&Buffer, &mut Cursor),
+    {
+        f(&self.buffer, &mut self.cursor);
+        for c in &mut self.extra_cursors {
+            f(&self.buffer, c);
+        }
+        self.dedupe_cursors();
+    }
+
+    /// Aplica una edición (que puede modificar el buffer) a todos los
+    /// cursores. Procesa en orden de offset descendente para que las
+    /// ediciones tempranas no desplacen las posiciones de las
+    /// posteriores. Devuelve `true` si al menos uno produjo un delta.
+    /// Cada delta también genera un `tree_sitter::InputEdit` que va a
+    /// `pending_input_edits` para alimentar el incremental parsing.
+    fn apply_edit_all<F>(&mut self, mut f: F) -> bool
+    where
+        F: FnMut(&mut Buffer, &mut Cursor, &EditorOptions) -> Option<crate::ops::EditDelta>,
+    {
+        let mut all: Vec<(Option<usize>, usize)> = Vec::with_capacity(1 + self.extra_cursors.len());
+        let p_off = self.buffer.pos_to_offset(self.cursor.caret.line, self.cursor.caret.col);
+        all.push((None, p_off));
+        for (i, c) in self.extra_cursors.iter().enumerate() {
+            let off = self.buffer.pos_to_offset(c.caret.line, c.caret.col);
+            all.push((Some(i), off));
+        }
+        all.sort_by_key(|(_, off)| std::cmp::Reverse(*off));
+
+        let opts = self.options;
+        let mut any = false;
+        for (which, _) in all {
+            let cursor: &mut Cursor = match which {
+                None => &mut self.cursor,
+                Some(i) => &mut self.extra_cursors[i],
+            };
+            // Pre-edit positions del start del delta — necesitamos las
+            // coordenadas BYTE del buffer ANTES de la edición.
+            let start_char = self.buffer.pos_to_offset(cursor.caret.line, cursor.caret.col);
+            // Pero si hay selección, el start real es el min de la sel.
+            let (sel_start, _) = cursor.selection_range(&self.buffer);
+            let start_char = start_char.min(sel_start);
+            let start_byte = self.buffer.char_to_byte(start_char);
+            let start_line = self.buffer.char_to_line(start_char);
+            let start_col_byte = start_byte - self.buffer.line_to_byte(start_line);
+            let pre_pt = tree_sitter::Point { row: start_line, column: start_col_byte };
+
+            if let Some(d) = f(&mut self.buffer, cursor, &opts) {
+                let edit = compute_input_edit(start_byte, pre_pt, &d);
+                self.pending_input_edits.borrow_mut().push(edit);
+                self.undo.push(d);
+                any = true;
+            }
+        }
+        self.dedupe_cursors();
+        any
+    }
+
+    /// Elimina cursores extras que están en la misma posición que el
+    /// primary o que otros extras (después de una edición pueden
+    /// converger).
+    fn dedupe_cursors(&mut self) {
+        let primary = self.cursor.caret;
+        let mut seen: Vec<Pos> = vec![primary];
+        self.extra_cursors.retain(|c| {
+            if seen.contains(&c.caret) {
+                false
+            } else {
+                seen.push(c.caret);
+                true
+            }
+        });
+    }
+}
+
+/// Si `cursor.caret.line` cae sobre una línea presente en `guards`,
+/// mueve el caret a la línea no-guarda más cercana siguiendo `dir`:
+///
+/// - `dir > 0` → busca primero abajo, luego arriba.
+/// - `dir < 0` → busca primero arriba, luego abajo.
+/// - `dir == 0` → equivalente a `dir > 0`.
+///
+/// Colapsa la selección y reposiciona el `col` clampeado al ancho de
+/// la línea destino. `guards` debe estar ordenado ascendente; el
+/// chequeo usa `binary_search`. Si TODAS las líneas son guardas, no
+/// puede hacer nada y el caret queda donde está.
+fn snap_cursor_off_guard(
+    cursor: &mut Cursor,
+    buffer: &Buffer,
+    guards: &[usize],
+    dir: i32,
+) {
+    let n = buffer.len_lines();
+    if n == 0 || guards.is_empty() {
+        return;
+    }
+    let line = cursor.caret.line.min(n - 1);
+    if guards.binary_search(&line).is_err() {
+        return;
+    }
+    // Orden de búsqueda: primero la dirección preferida, luego la opuesta.
+    let primary: i32 = if dir < 0 { -1 } else { 1 };
+    let secondary: i32 = -primary;
+    for d in [primary, secondary] {
+        let mut probe = line as i32 + d;
+        while probe >= 0 && (probe as usize) < n {
+            let p = probe as usize;
+            if guards.binary_search(&p).is_err() {
+                let col = cursor.desired_col.min(buffer.line_len_chars(p));
+                cursor.caret = Pos::new(p, col);
+                cursor.anchor = None;
+                return;
+            }
+            probe += d;
+        }
+    }
+    // Todas las líneas son guardas — no podemos hacer nada útil.
+}
+
+/// Convierte un `EditDelta` + posiciones pre-edit a un `InputEdit` de
+/// tree-sitter. tree-sitter trabaja en bytes y `Point { row, column_byte }`;
+/// el editor trabaja en chars (y col_byte para esto).
+///
+/// `start_byte` y `start_point` son las coords del inicio del delta
+/// ANTES del cambio (el caller las captura).
+fn compute_input_edit(
+    start_byte: usize,
+    start_point: tree_sitter::Point,
+    delta: &crate::ops::EditDelta,
+) -> tree_sitter::InputEdit {
+    let removed_bytes = delta.removed.len();
+    let inserted_bytes = delta.inserted.len();
+
+    let old_end_byte = start_byte + removed_bytes;
+    let new_end_byte = start_byte + inserted_bytes;
+
+    let old_end_point = advance_point(start_point, &delta.removed);
+    let new_end_point = advance_point(start_point, &delta.inserted);
+
+    tree_sitter::InputEdit {
+        start_byte,
+        old_end_byte,
+        new_end_byte,
+        start_position: start_point,
+        old_end_position: old_end_point,
+        new_end_position: new_end_point,
+    }
+}
+
+/// Avanza un Point por el contenido de `text`: cuenta `\n` para filas,
+/// bytes de la última línea para columna.
+fn advance_point(start: tree_sitter::Point, text: &str) -> tree_sitter::Point {
+    let newlines = text.bytes().filter(|b| *b == b'\n').count();
+    if newlines == 0 {
+        tree_sitter::Point {
+            row: start.row,
+            column: start.column + text.len(),
+        }
+    } else {
+        let after_last_nl = text.rsplit('\n').next().unwrap_or("").len();
+        tree_sitter::Point {
+            row: start.row + newlines,
+            column: after_last_nl,
+        }
+    }
+}
+
+/// Resultado de `apply_key`. El caller usa esto para decidir si
+/// rebuildear el view o ignorar.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum ApplyResult {
+    /// La tecla cambió el buffer (o sea, hay edición persistible).
+    Changed,
+    /// Sólo se movió el cursor — el view se redibuja, pero el `source`
+    /// del notebook no cambia.
+    CursorMoved,
+    /// La tecla no aplicaba al editor.
+    Ignored,
+}
+
+impl ApplyResult {
+    pub fn changed(self) -> bool {
+        matches!(self, ApplyResult::Changed)
+    }
+    pub fn touched(self) -> bool {
+        !matches!(self, ApplyResult::Ignored)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use llimphi_ui::Modifiers;
+
+    fn ev(named: NamedKey, shift: bool, ctrl: bool) -> KeyEvent {
+        KeyEvent {
+            key: Key::Named(named),
+            state: KeyState::Pressed,
+            text: None,
+            modifiers: Modifiers { shift, ctrl, alt: false, meta: false },
+            repeat: false,
+        }
+    }
+    fn evtext(s: &str, shift: bool, ctrl: bool) -> KeyEvent {
+        KeyEvent {
+            key: Key::Character(s.into()),
+            state: KeyState::Pressed,
+            text: Some(s.to_owned()),
+            modifiers: Modifiers { shift, ctrl, alt: false, meta: false },
+            repeat: false,
+        }
+    }
+
+    #[test]
+    fn escribir_chars_inserta() {
+        let mut s = EditorState::new();
+        s.apply_key(&evtext("h", false, false));
+        s.apply_key(&evtext("i", false, false));
+        assert_eq!(s.text(), "hi");
+    }
+
+    #[test]
+    fn enter_con_indent_auto() {
+        let mut s = EditorState::new();
+        s.set_text("    hola");
+        s.cursor = Cursor::at(0, 8);
+        s.apply_key(&ev(NamedKey::Enter, false, false));
+        assert_eq!(s.text(), "    hola\n    ");
+    }
+
+    #[test]
+    fn enter_en_single_line_ignorado() {
+        let mut s = EditorState::with_options(EditorOptions {
+            single_line: true,
+            ..Default::default()
+        });
+        s.set_text("a");
+        s.cursor = Cursor::at(0, 1);
+        let r = s.apply_key(&ev(NamedKey::Enter, false, false));
+        assert_eq!(r, ApplyResult::Ignored);
+        assert_eq!(s.text(), "a");
+    }
+
+    #[test]
+    fn tab_inserta_indent() {
+        let mut s = EditorState::new();
+        s.apply_key(&ev(NamedKey::Tab, false, false));
+        assert_eq!(s.text(), "  "); // indent_size por defecto = 2
+    }
+
+    #[test]
+    fn shift_tab_dedenta() {
+        let mut s = EditorState::new();
+        s.set_text("    hola");
+        s.cursor = Cursor::at(0, 4);
+        s.apply_key(&ev(NamedKey::Tab, true, false));
+        // indent_size=2 → quita 2 espacios
+        assert_eq!(s.text(), "  hola");
+    }
+
+    #[test]
+    fn ctrl_z_y_ctrl_y_son_undo_redo() {
+        let mut s = EditorState::new();
+        s.apply_key(&evtext("a", false, false));
+        s.apply_key(&evtext("b", false, false));
+        assert_eq!(s.text(), "ab");
+        s.apply_key(&evtext("z", false, true));
+        assert_eq!(s.text(), "a");
+        s.apply_key(&evtext("y", false, true));
+        assert_eq!(s.text(), "ab");
+    }
+
+    #[test]
+    fn ctrl_shift_z_es_redo() {
+        let mut s = EditorState::new();
+        s.apply_key(&evtext("a", false, false));
+        s.apply_key(&evtext("z", false, true));
+        assert!(s.is_empty());
+        s.apply_key(&evtext("z", true, true));
+        assert_eq!(s.text(), "a");
+    }
+
+    #[test]
+    fn ctrl_arrow_left_salta_palabra() {
+        let mut s = EditorState::new();
+        s.set_text("hola mundo");
+        s.cursor = Cursor::at(0, 10);
+        s.apply_key(&ev(NamedKey::ArrowLeft, false, true));
+        assert_eq!(s.cursor.caret, Pos::new(0, 5)); // inicio de "mundo"
+        s.apply_key(&ev(NamedKey::ArrowLeft, false, true));
+        assert_eq!(s.cursor.caret, Pos::new(0, 0)); // inicio de "hola"
+    }
+
+    #[test]
+    fn shift_arrow_selecciona_y_chars_reemplazan() {
+        let mut s = EditorState::new();
+        s.set_text("abc");
+        s.cursor = Cursor::at(0, 0);
+        s.apply_key(&ev(NamedKey::ArrowRight, true, false));
+        s.apply_key(&ev(NamedKey::ArrowRight, true, false));
+        assert!(s.cursor.has_selection());
+        s.apply_key(&evtext("X", false, false));
+        assert_eq!(s.text(), "Xc");
+    }
+
+    #[test]
+    fn ctrl_chars_se_ignoran_en_input_normal() {
+        // Ctrl+S no debería insertar "s".
+        let mut s = EditorState::new();
+        let r = s.apply_key(&evtext("s", false, true));
+        assert_eq!(r, ApplyResult::Ignored);
+        assert!(s.is_empty());
+    }
+
+    #[test]
+    fn ctrl_c_copia_la_seleccion_al_clipboard() {
+        use crate::clipboard::MemClipboard;
+        let mut s = EditorState::new();
+        s.set_text("hola mundo");
+        s.cursor = Cursor {
+            anchor: Some(Pos::new(0, 0)),
+            caret: Pos::new(0, 4),
+            desired_col: 4,
+        };
+        let mut clip = MemClipboard::new();
+        let r = s.apply_key_with_clipboard(&evtext("c", false, true), &mut clip);
+        assert_eq!(r, ApplyResult::CursorMoved);
+        assert_eq!(clip.get().as_deref(), Some("hola"));
+        // El buffer no cambia.
+        assert_eq!(s.text(), "hola mundo");
+    }
+
+    #[test]
+    fn ctrl_x_corta_y_borra() {
+        use crate::clipboard::MemClipboard;
+        let mut s = EditorState::new();
+        s.set_text("hola mundo");
+        s.cursor = Cursor {
+            anchor: Some(Pos::new(0, 0)),
+            caret: Pos::new(0, 5),
+            desired_col: 5,
+        };
+        let mut clip = MemClipboard::new();
+        let r = s.apply_key_with_clipboard(&evtext("x", false, true), &mut clip);
+        assert_eq!(r, ApplyResult::Changed);
+        assert_eq!(clip.get().as_deref(), Some("hola "));
+        assert_eq!(s.text(), "mundo");
+    }
+
+    #[test]
+    fn ctrl_v_pega_en_el_caret() {
+        use crate::clipboard::MemClipboard;
+        let mut s = EditorState::new();
+        s.set_text("ab");
+        s.cursor = Cursor::at(0, 1);
+        let mut clip = MemClipboard::with("XYZ");
+        s.apply_key_with_clipboard(&evtext("v", false, true), &mut clip);
+        assert_eq!(s.text(), "aXYZb");
+    }
+
+    #[test]
+    fn ctrl_v_aplana_newlines_en_single_line() {
+        use crate::clipboard::MemClipboard;
+        let mut s = EditorState::with_options(EditorOptions {
+            single_line: true,
+            ..Default::default()
+        });
+        let mut clip = MemClipboard::with("a\nb\nc");
+        s.apply_key_with_clipboard(&evtext("v", false, true), &mut clip);
+        assert_eq!(s.text(), "a b c");
+    }
+
+    #[test]
+    fn ensure_caret_visible_scrollea_hacia_abajo() {
+        let mut s = EditorState::new();
+        let lines: String = (0..100).map(|n| format!("line {n}\n")).collect();
+        s.set_text(&lines);
+        s.cursor = Cursor::at(50, 0);
+        s.ensure_caret_visible(20);
+        // Caret en línea 50, visible_lines = 20 → scroll = 50 - 19 = 31.
+        assert_eq!(s.scroll_offset, 31);
+        // El caret debe estar dentro del viewport.
+        assert!(s.cursor.caret.line >= s.scroll_offset);
+        assert!(s.cursor.caret.line < s.scroll_offset + 20);
+    }
+
+    #[test]
+    fn ensure_caret_visible_scrollea_hacia_arriba() {
+        let mut s = EditorState::new();
+        let lines: String = (0..100).map(|n| format!("line {n}\n")).collect();
+        s.set_text(&lines);
+        s.scroll_offset = 50;
+        s.cursor = Cursor::at(5, 0);
+        s.ensure_caret_visible(20);
+        assert_eq!(s.scroll_offset, 5);
+    }
+
+    #[test]
+    fn ensure_caret_visible_no_mueve_si_ya_visible() {
+        let mut s = EditorState::new();
+        let lines: String = (0..50).map(|n| format!("line {n}\n")).collect();
+        s.set_text(&lines);
+        s.scroll_offset = 10;
+        s.cursor = Cursor::at(15, 0);
+        s.ensure_caret_visible(20);
+        assert_eq!(s.scroll_offset, 10);
+    }
+
+    #[test]
+    fn input_edits_se_acumulan_y_drenan_en_highlight() {
+        use crate::highlight::Language;
+        let mut s = EditorState::new();
+        s.set_text("fn main() {}");
+        // Set_text invalida pero NO pushea InputEdit (es replace_all).
+        // Después de una edit normal, sí debería haber 1 pending.
+        s.cursor = Cursor::at(0, 12);
+        s.apply_key(&evtext("x", false, false));
+        assert_eq!(s.pending_input_edits.borrow().len(), 1);
+        // El parse drena los pending.
+        let _ = s.highlighted_spans(Language::Rust);
+        assert!(s.pending_input_edits.borrow().is_empty());
+    }
+
+    #[test]
+    fn input_edit_multilinea_calcula_rows_correctamente() {
+        let mut s = EditorState::new();
+        s.set_text("ab");
+        s.cursor = Cursor::at(0, 2);
+        s.apply_key(&ev(NamedKey::Enter, false, false));
+        let edits = s.pending_input_edits.borrow().clone();
+        assert_eq!(edits.len(), 1);
+        let e = &edits[0];
+        // Insertó "\n" (auto-indent vacío porque no había indent) →
+        // new_end_position debe estar en row=1, col=0.
+        assert_eq!(e.start_byte, 2);
+        assert_eq!(e.new_end_position.row, 1);
+        assert_eq!(e.new_end_position.column, 0);
+    }
+
+    #[test]
+    fn edit_seq_se_incrementa_solo_con_cambios() {
+        let mut s = EditorState::new();
+        let seq0 = s.edit_seq;
+        s.apply_key(&ev(NamedKey::ArrowRight, false, false)); // CursorMoved
+        assert_eq!(s.edit_seq, seq0, "movimiento no debería bumpear");
+        s.apply_key(&evtext("a", false, false)); // Changed
+        assert!(s.edit_seq > seq0);
+    }
+
+    #[test]
+    fn highlight_cache_reuse_cuando_seq_no_cambia() {
+        use crate::highlight::Language;
+        let mut s = EditorState::new();
+        s.set_text("fn main() {}");
+        let _ = s.highlighted_spans(Language::Rust);
+        let seq_before = s.edit_seq;
+        let _ = s.highlighted_spans(Language::Rust);
+        // Sin edición → seq igual → cache hit (no asserción directa
+        // posible sin mock, pero al menos el seq no cambia).
+        assert_eq!(s.edit_seq, seq_before);
+    }
+
+    #[test]
+    fn multi_cursor_insert_aplica_a_todos() {
+        let mut s = EditorState::new();
+        s.set_text("ab\ncd\nef");
+        // Cursor primary al final de "ab", extras al final de "cd" y "ef".
+        s.cursor = Cursor::at(0, 2);
+        s.add_cursor_at(1, 2);
+        s.add_cursor_at(2, 2);
+        s.apply_key(&evtext("!", false, false));
+        assert_eq!(s.text(), "ab!\ncd!\nef!");
+    }
+
+    #[test]
+    fn multi_cursor_backspace_aplica_a_todos() {
+        let mut s = EditorState::new();
+        s.set_text("ab\ncd\nef");
+        s.cursor = Cursor::at(0, 2);
+        s.add_cursor_at(1, 2);
+        s.add_cursor_at(2, 2);
+        s.apply_key(&ev(NamedKey::Backspace, false, false));
+        assert_eq!(s.text(), "a\nc\ne");
+    }
+
+    #[test]
+    fn dedupe_cursors_remueve_solapados() {
+        let mut s = EditorState::new();
+        s.set_text("abc");
+        s.cursor = Cursor::at(0, 1);
+        s.add_cursor_at(0, 1); // exacto primary → no se agrega
+        s.add_cursor_at(0, 2);
+        // El primer add no agregó nada; el segundo sí.
+        assert_eq!(s.extra_cursors.len(), 1);
+    }
+
+    #[test]
+    fn collapse_to_primary_descarta_extras() {
+        let mut s = EditorState::new();
+        s.set_text("abc");
+        s.cursor = Cursor::at(0, 0);
+        s.add_cursor_at(0, 1);
+        s.add_cursor_at(0, 2);
+        assert!(s.has_multi_cursor());
+        s.collapse_to_primary();
+        assert!(!s.has_multi_cursor());
+    }
+
+    #[test]
+    fn highlight_cache_invalida_con_cambio_de_lenguaje() {
+        use crate::highlight::Language;
+        let mut s = EditorState::new();
+        s.set_text("def f(): pass");
+        let py = s.highlighted_spans(Language::Python);
+        let rs = s.highlighted_spans(Language::Rust);
+        // Distinto lenguaje → spans distintos (al menos el conteo o
+        // las categorías difieren).
+        assert!(py != rs || s.is_empty());
+    }
+
+    #[test]
+    fn scroll_by_clampea_a_rango_valido() {
+        let mut s = EditorState::new();
+        let lines: String = (0..10).map(|n| format!("line {n}\n")).collect();
+        s.set_text(&lines);
+        s.scroll_by(-100);
+        assert_eq!(s.scroll_offset, 0);
+        s.scroll_by(1000);
+        assert!(s.scroll_offset < 11);
+    }
+
+    fn estado_con_guardas(texto: &str, guards: Vec<usize>) -> EditorState {
+        let mut s = EditorState::new();
+        s.set_text(texto);
+        s.set_guard_lines(guards);
+        s
+    }
+
+    #[test]
+    fn guarda_set_caret_at_en_linea_vacia_salta_hacia_abajo() {
+        // "abc\n\ndef" → líneas: "abc", "", "def". La 1 es guarda.
+        let mut s = estado_con_guardas("abc\n\ndef", vec![1]);
+        s.set_caret_at(1, 0);
+        // El caret no puede quedar en la línea 1 (guarda) — salta a 2.
+        assert_eq!(s.cursor.caret, Pos::new(2, 0));
+    }
+
+    #[test]
+    fn guarda_sin_linea_abajo_salta_arriba() {
+        // Todas las líneas después de la 0 son guardas: el snap solo
+        // puede ir hacia arriba.
+        let mut s = estado_con_guardas("abc\n\n", vec![1, 2]);
+        s.set_caret_at(1, 0);
+        assert_eq!(s.cursor.caret.line, 0);
+    }
+
+    #[test]
+    fn guarda_arrow_down_atraviesa_la_separacion() {
+        let mut s = estado_con_guardas("abc\n\ndef", vec![1]);
+        s.cursor = Cursor::at(0, 0);
+        // Down debería terminar en línea 2, no en la 1 (guarda).
+        s.apply_key(&ev(NamedKey::ArrowDown, false, false));
+        assert_eq!(s.cursor.caret.line, 2);
+    }
+
+    #[test]
+    fn guarda_arrow_up_atraviesa_la_separacion() {
+        let mut s = estado_con_guardas("abc\n\ndef", vec![1]);
+        s.cursor = Cursor::at(2, 1);
+        s.apply_key(&ev(NamedKey::ArrowUp, false, false));
+        assert_eq!(s.cursor.caret.line, 0);
+    }
+
+    #[test]
+    fn set_text_limpia_guardas() {
+        // Tras `set_text`, las guardas anteriores ya no son válidas:
+        // el caller las repuebla. La función las limpia.
+        let mut s = estado_con_guardas("abc\n\ndef", vec![1]);
+        assert_eq!(s.guard_lines, vec![1]);
+        s.set_text("nuevo");
+        assert!(s.guard_lines.is_empty());
+    }
+
+    #[test]
+    fn sin_guardas_set_caret_at_en_blank_se_queda() {
+        // Con `guard_lines` vacío, comportamiento clásico: el caret
+        // puede caer en cualquier línea sin snap.
+        let mut s = EditorState::new();
+        s.set_text("abc\n\ndef");
+        s.set_caret_at(1, 0);
+        assert_eq!(s.cursor.caret, Pos::new(1, 0));
+    }
+
+    #[test]
+    fn guarda_shift_arrow_extiende_seleccion_a_traves() {
+        // Con selección viva atravesando la guarda, NO snapear: el
+        // usuario está seleccionando texto multi-zona.
+        let mut s = estado_con_guardas("abc\n\ndef", vec![1]);
+        s.cursor = Cursor::at(0, 3);
+        s.apply_key(&ev(NamedKey::ArrowDown, true, false));
+        // El caret puede quedar en la línea 1 mientras hay selección
+        // viva — el snap se inhibe.
+        assert!(s.cursor.has_selection());
+        assert_eq!(s.cursor.caret.line, 1);
+    }
+
+    #[test]
+    fn set_guard_lines_ordena_y_deduplica() {
+        let mut s = EditorState::new();
+        s.set_text("a\nb\nc\nd\ne");
+        s.set_guard_lines(vec![3, 1, 1, 3]);
+        assert_eq!(s.guard_lines, vec![1, 3]);
+    }
+
+    #[test]
+    fn guarda_no_es_solo_blank_puede_ser_cualquiera() {
+        // Una guarda no tiene que ser una línea vacía — el widget no
+        // mira el contenido, sólo el índice. Una línea con texto
+        // marcada como guarda igual repele al caret.
+        let mut s = EditorState::new();
+        s.set_text("aaa\nbbb\nccc");
+        s.set_guard_lines(vec![1]); // línea "bbb" es guarda
+        s.set_caret_at(1, 0);
+        assert!(s.cursor.caret.line != 1);
+    }
+
+    #[test]
+    fn ctrl_c_sin_seleccion_es_ignorado() {
+        use crate::clipboard::MemClipboard;
+        let mut s = EditorState::new();
+        s.set_text("hola");
+        s.cursor = Cursor::at(0, 4);
+        let mut clip = MemClipboard::new();
+        let r = s.apply_key_with_clipboard(&evtext("c", false, true), &mut clip);
+        assert_eq!(r, ApplyResult::Ignored);
+        assert!(clip.get().is_none());
+    }
+}
diff --git a/widgets/text-editor/src/view.rs b/widgets/text-editor/src/view.rs
new file mode 100644
index 0000000..556a39f
--- /dev/null
+++ b/widgets/text-editor/src/view.rs
@@ -0,0 +1,855 @@
+//! Render del editor. Layout: gutter izquierdo (line numbers) + área
+//! principal (texto + selección como rects + caret bloque). El scroll
+//! vertical es implícito por viewport — el caller decide cuántas líneas
+//! caben en el `height` que pasa.
+//!
+//! Limitaciones del PMV de render:
+//! - **Char width fijo** — asume fuente monoespaciada y un ancho de
+//!   carácter en píxeles fijo. Para CJK / proportional el caret y la
+//!   selección se desalinean. Para texto ASCII monoespaciado es exacto.
+//! - **Selección multilínea** se pinta como un rect por línea afectada
+//!   (sin "rio" continuo); estilo Sublime Text / antiguo, lectura clara.
+//! - **Sin syntax highlight todavía** — eso vive en su propio bloque y
+//!   requiere `llimphi-text` rich (Vec<Run>); aquí cada línea va
+//!   monocolor `fg_text`.
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, percent, FlexDirection, Position, Rect, Size, Style},
+    AlignItems,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+
+use crate::cursor::Pos;
+use crate::diagnostics::{Diagnostic, Severity};
+use crate::highlight::{Language, Span, SyntaxPalette, TokenKind};
+use crate::state::EditorState;
+
+/// Paleta del editor. Defaults dark.
+#[derive(Debug, Clone, Copy)]
+pub struct EditorPalette {
+    pub bg: Color,
+    pub bg_gutter: Color,
+    pub bg_selection: Color,
+    pub bg_current_line: Color,
+    pub fg_text: Color,
+    pub fg_line_number: Color,
+    pub fg_line_number_active: Color,
+    pub caret: Color,
+    /// Fondo del bracket bajo el cursor + su par. Un acento sutil.
+    pub bg_bracket_pair: Color,
+    /// Fondo de cada match del find activo.
+    pub bg_match: Color,
+    /// Subrayado de diagnostic — Error.
+    pub diag_error: Color,
+    /// Subrayado de diagnostic — Warning.
+    pub diag_warning: Color,
+    /// Subrayado de diagnostic — Information.
+    pub diag_info: Color,
+    /// Subrayado de diagnostic — Hint.
+    pub diag_hint: Color,
+}
+
+impl Default for EditorPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl EditorPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        // Reutilizamos slots del theme; los que no existen como semánticos
+        // se derivan con `mix`/transparencia conceptual.
+        Self {
+            bg: t.bg_input,
+            bg_gutter: t.bg_panel,
+            bg_selection: t.bg_selected,
+            bg_current_line: t.bg_panel_alt,
+            fg_text: t.fg_text,
+            fg_line_number: t.fg_muted,
+            fg_line_number_active: t.fg_text,
+            caret: t.accent,
+            bg_bracket_pair: t.bg_button_hover,
+            bg_match: t.bg_button_hover,
+            diag_error: t.fg_destructive,
+            diag_warning: Color::from_rgb8(229, 192, 123),
+            diag_info: Color::from_rgb8(97, 175, 239),
+            diag_hint: t.fg_muted,
+        }
+    }
+}
+
+/// Cómo renderizar la columna izquierda del editor.
+///
+/// - [`GutterStyle::Numbers`] es el comportamiento clásico de IDE:
+///   "1", "2", "3"… alineados a la derecha del gutter.
+/// - [`GutterStyle::Phantom`] suprime los números y dibuja en su lugar
+///   un tick **muy sutil** por línea (un pequeño segmento horizontal
+///   con baja opacidad). Sirve para prosa narrativa donde el número de
+///   línea es ruido — la línea sigue estando, pero "fingiendo no
+///   estar". El gutter en este modo se acorta a un sliver fino.
+#[derive(Debug, Clone, Copy, Default, PartialEq, Eq)]
+pub enum GutterStyle {
+    #[default]
+    Numbers,
+    Phantom,
+}
+
+/// Métricas del editor — todo derivado del `font_size`. Cambiar la
+/// fuente requiere recalcular `char_width` empíricamente para la mono
+/// que use llimphi-text; los valores acá son razonables para
+/// `font_size = 12` con la mono default de parley.
+#[derive(Debug, Clone, Copy)]
+pub struct EditorMetrics {
+    pub font_size: f32,
+    /// Alto de cada línea en píxeles (font_size * line_height_ratio).
+    pub line_height: f32,
+    /// Ancho promedio de un char (mono). Si la fuente no es mono, esto
+    /// es sólo una aproximación.
+    pub char_width: f32,
+    /// Ancho del gutter (incluye padding interno).
+    pub gutter_width: f32,
+    /// Cómo se pinta el gutter. Default [`GutterStyle::Numbers`] — el
+    /// comportamiento clásico se conserva para callers existentes.
+    pub gutter_style: GutterStyle,
+    /// Si `true`, cada línea **guarda** (índices en
+    /// `EditorState::guard_lines`) recibe un segmento horizontal con
+    /// baja opacidad atravesando su centro — un divisor fantasma que
+    /// sugiere "acá termina un bloque" sin gritar. Sin guardas, esto
+    /// no hace nada visible. Default `false`: comportamiento IDE
+    /// clásico.
+    pub phantom_guard_lines: bool,
+}
+
+impl Default for EditorMetrics {
+    fn default() -> Self {
+        Self::for_font_size(12.0)
+    }
+}
+
+impl EditorMetrics {
+    pub const fn for_font_size(font_size: f32) -> Self {
+        Self {
+            font_size,
+            line_height: font_size * 1.4,
+            char_width: font_size * 0.6,
+            gutter_width: font_size * 3.5,
+            gutter_style: GutterStyle::Numbers,
+            phantom_guard_lines: false,
+        }
+    }
+
+    /// Variante "prosa": gutter fantasma (ticks sutiles, sin números) +
+    /// divisores fantasma en cada guarda. Ancho del gutter reducido a
+    /// un sliver porque ya no necesita acomodar dígitos.
+    ///
+    /// Pensado para editores narrativos tipo `cuerpo_ide` donde el
+    /// número de línea es ruido y las junctions están marcadas como
+    /// guardas.
+    pub const fn prosa(font_size: f32) -> Self {
+        Self {
+            font_size,
+            line_height: font_size * 1.4,
+            char_width: font_size * 0.6,
+            gutter_width: font_size * 1.0,
+            gutter_style: GutterStyle::Phantom,
+            phantom_guard_lines: true,
+        }
+    }
+
+    /// Convierte coords locales del **área de contenido** (no del gutter)
+    /// a `(line, col)` absolutas en el buffer. `local_x` se mide desde el
+    /// borde izquierdo del área de texto (sin el padding interno de 4 px);
+    /// `local_y` desde la primera línea visible.
+    ///
+    /// Devuelve coordenadas siempre dentro del buffer — el caller
+    /// generalmente las pasa a `EditorState::set_caret_at` que clampea
+    /// `col` al ancho real de la línea.
+    pub fn screen_to_pos(self, local_x: f32, local_y: f32, scroll_offset: usize) -> (usize, usize) {
+        let line_local = (local_y / self.line_height).max(0.0) as usize;
+        let col = ((local_x - 4.0).max(0.0) / self.char_width).round() as usize;
+        (scroll_offset + line_local, col)
+    }
+}
+
+/// Render principal sin syntax highlight — todas las líneas visibles
+/// en `palette.fg_text`. `visible_lines` es cuántas líneas mostrar como
+/// máximo en el viewport.
+///
+/// `on_pointer` se invoca con el evento del mouse dentro del área de
+/// texto (no del gutter): el caller decide cómo mover el caret /
+/// extender selección. Ver [`PointerEvent`].
+pub fn text_editor_view<Msg: Clone + 'static>(
+    state: &EditorState,
+    palette: &EditorPalette,
+    metrics: EditorMetrics,
+    visible_lines: usize,
+    on_pointer: impl Fn(PointerEvent) -> Option<Msg> + Send + Sync + Clone + 'static,
+) -> View<Msg> {
+    text_editor_view_highlighted(
+        state,
+        palette,
+        metrics,
+        visible_lines,
+        Language::Plain,
+        on_pointer,
+    )
+}
+
+/// Evento de mouse que el view envía al caller dentro del área de texto.
+/// El caller convierte `(x, y)` con [`EditorMetrics::screen_to_pos`] y
+/// aplica `set_caret_at` (Click) o `extend_selection_to` (Drag).
+///
+/// `Drag` entrega `initial` (pos del press inicial, constante durante el
+/// drag) + `delta` (delta desde el evento anterior). El caller debe
+/// acumular el delta — el view no mantiene state. Patrón típico:
+/// `accum += (dx, dy); actual = (initial_x + accum.0, initial_y + accum.1)`.
+#[derive(Debug, Clone, Copy)]
+pub enum PointerEvent {
+    Click { x: f32, y: f32 },
+    Drag { initial_x: f32, initial_y: f32, dx: f32, dy: f32 },
+}
+
+/// Render con syntax highlight + **viewport scrolling**: sólo se renderizan
+/// las líneas en `[state.scroll_offset, scroll_offset + visible_lines)`.
+///
+/// `visible_lines` es cuántas líneas máximo dibujamos por frame; el caller
+/// se asegura de tener un container con altura ≥ `visible_lines * line_height`
+/// o aplica clip propio. Para archivos grandes (1000+ líneas), el cap es
+/// crítico — sin él generaríamos miles de Views y wgpu rechazaría el bind
+/// group por `max_*_buffer_binding_size`.
+///
+/// Recomendación para el caller: tras cada edición, llamar a
+/// [`EditorState::ensure_caret_visible`] con el mismo `visible_lines` para
+/// que el viewport siga al caret.
+pub fn text_editor_view_highlighted<Msg: Clone + 'static>(
+    state: &EditorState,
+    palette: &EditorPalette,
+    metrics: EditorMetrics,
+    visible_lines: usize,
+    language: Language,
+    on_pointer: impl Fn(PointerEvent) -> Option<Msg> + Send + Sync + Clone + 'static,
+) -> View<Msg> {
+    text_editor_view_full(
+        state,
+        palette,
+        metrics,
+        visible_lines,
+        language,
+        &[],
+        on_pointer,
+    )
+}
+
+/// Como [`text_editor_view_highlighted`] + `match_ranges` para pintar
+/// las ocurrencias de un find activo. Cada par `(char_start, char_end)`
+/// es un rango de chars globales del buffer.
+pub fn text_editor_view_full<Msg: Clone + 'static>(
+    state: &EditorState,
+    palette: &EditorPalette,
+    metrics: EditorMetrics,
+    visible_lines: usize,
+    language: Language,
+    match_ranges: &[(usize, usize)],
+    on_pointer: impl Fn(PointerEvent) -> Option<Msg> + Send + Sync + Clone + 'static,
+) -> View<Msg> {
+    let caret = state.cursor.caret;
+    let syntax = crate::syntax_palette_dark(&llimphi_theme::Theme::dark());
+
+    let visible = visible_lines.max(1).min(200);
+    let line_count = state.line_count();
+    let scroll = state.scroll_offset.min(line_count.saturating_sub(1));
+    let end_line = (scroll + visible).min(line_count);
+    let height = (end_line - scroll) as f32 * metrics.line_height;
+
+    // Memoizado por `edit_seq` — sólo reparseamos cuando el buffer
+    // realmente cambió o cambia el `Language`.
+    let spans = state.highlighted_spans(language);
+
+    let gutter = build_gutter(state, scroll, end_line, caret.line, metrics, palette);
+    let content = build_content(
+        state,
+        palette,
+        metrics,
+        height,
+        scroll,
+        end_line,
+        spans,
+        &syntax,
+        match_ranges,
+        on_pointer,
+    );
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size { width: percent(1.0_f32), height: length(height) },
+        ..Default::default()
+    })
+    .fill(palette.bg)
+    .clip(true)
+    .children(vec![gutter, content])
+}
+
+fn build_gutter<Msg: Clone + 'static>(
+    state: &EditorState,
+    scroll: usize,
+    end_line: usize,
+    active_line: usize,
+    metrics: EditorMetrics,
+    palette: &EditorPalette,
+) -> View<Msg> {
+    let count = end_line.saturating_sub(scroll);
+    let mut children: Vec<View<Msg>> = Vec::with_capacity(count);
+    for n in scroll..end_line {
+        // Las líneas-guarda son separadores estructurales entre zonas
+        // de texto: ni se numeran ni se pueden escribir. El espacio
+        // se preserva (la línea sigue existiendo), pero el gutter las
+        // saltea — visualmente la numeración "rompe" en cada zona.
+        // Si `guard_lines` está vacío, este check es siempre `false`
+        // y la numeración cubre todas las líneas (modo IDE clásico).
+        if state.is_guard_line(n) {
+            continue;
+        }
+        let color = if n == active_line {
+            palette.fg_line_number_active
+        } else {
+            palette.fg_line_number
+        };
+        let y = (n - scroll) as f32 * metrics.line_height;
+        match metrics.gutter_style {
+            GutterStyle::Numbers => {
+                let label = (n + 1).to_string();
+                children.push(
+                    View::new(Style {
+                        position: Position::Absolute,
+                        inset: Rect {
+                            left: length(0.0_f32),
+                            top: length(y),
+                            right: length(4.0_f32),
+                            bottom: auto(),
+                        },
+                        size: Size {
+                            width: length(metrics.gutter_width - 4.0),
+                            height: length(metrics.line_height),
+                        },
+                        align_items: Some(AlignItems::Center),
+                        ..Default::default()
+                    })
+                    .text_aligned(label, metrics.font_size * 0.85, color, Alignment::End),
+                );
+            }
+            GutterStyle::Phantom => {
+                // Tick fantasma — un segmento horizontal corto centrado
+                // verticalmente en la línea, con la opacidad bajada.
+                // La línea activa queda un pelín más visible.
+                let alpha = if n == active_line { 0.35 } else { 0.12 };
+                let tick_w = (metrics.gutter_width * 0.5).max(3.0);
+                let tick_h = 1.0_f32;
+                let tick_y = y + (metrics.line_height - tick_h) * 0.5;
+                let tick_x = (metrics.gutter_width - tick_w) * 0.5;
+                children.push(
+                    View::new(Style {
+                        position: Position::Absolute,
+                        inset: Rect {
+                            left: length(tick_x),
+                            top: length(tick_y),
+                            right: auto(),
+                            bottom: auto(),
+                        },
+                        size: Size {
+                            width: length(tick_w),
+                            height: length(tick_h),
+                        },
+                        ..Default::default()
+                    })
+                    .fill(with_alpha(color, alpha)),
+                );
+            }
+        }
+    }
+
+    // En modo Phantom el gutter es un sliver: no aplicamos `fill` —
+    // se mezcla con el fondo del editor. El gutter "está sin estar".
+    let bg = match metrics.gutter_style {
+        GutterStyle::Numbers => palette.bg_gutter,
+        GutterStyle::Phantom => palette.bg,
+    };
+    View::new(Style {
+        size: Size {
+            width: length(metrics.gutter_width),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(bg)
+    .clip(true)
+    .children(children)
+}
+
+/// Devuelve `c` con la opacidad multiplicada por `alpha` (clamp 0..1).
+fn with_alpha(c: Color, alpha: f32) -> Color {
+    let rgba = c.to_rgba8();
+    let a = ((alpha.clamp(0.0, 1.0)) * (rgba.a as f32)) as u8;
+    Color::from_rgba8(rgba.r, rgba.g, rgba.b, a)
+}
+
+fn build_content<Msg: Clone + 'static>(
+    state: &EditorState,
+    palette: &EditorPalette,
+    metrics: EditorMetrics,
+    height: f32,
+    scroll: usize,
+    end_line: usize,
+    spans_per_line: Vec<Vec<Span>>,
+    syntax: &SyntaxPalette,
+    match_ranges: &[(usize, usize)],
+    on_pointer: impl Fn(PointerEvent) -> Option<Msg> + Send + Sync + Clone + 'static,
+) -> View<Msg> {
+    let caret = state.cursor.caret;
+    let mut children: Vec<View<Msg>> = Vec::new();
+
+    // 0) Tintes por línea — la capa más baja, debajo de todo el resto.
+    //    Pinta un rect del ancho completo del área de contenido por
+    //    cada línea con tinte asignado. El caller elige el alpha — el
+    //    widget no lo modula. Si la línea cae fuera de viewport o no
+    //    tiene tinte, no se pinta nada.
+    for n in scroll..end_line {
+        if let Some(Some(c)) = state.line_tints.get(n) {
+            children.push(line_tint(n - scroll, *c, metrics));
+        }
+    }
+
+    // 1) Fondo del renglón activo — sólo el del primary cursor.
+    if caret.line >= scroll && caret.line < end_line {
+        children.push(line_highlight(caret.line - scroll, metrics, palette));
+    }
+
+    // 1b) Highlight de matches del find.
+    for (s, e) in match_ranges {
+        children.extend(match_rects(state, *s, *e, scroll, end_line, metrics, palette));
+    }
+
+    // 2) Selección — por cada cursor que tenga selección.
+    for c in state.all_cursors() {
+        if c.has_selection() {
+            children.extend(selection_rects_for_cursor(
+                state, c, scroll, end_line, metrics, palette,
+            ));
+        }
+    }
+
+    // 2b) Bracket pair bajo el primary cursor — si visible.
+    if let Some((a, b)) = crate::bracket::find_bracket_pair(&state.buffer, &state.cursor) {
+        if a.line >= scroll && a.line < end_line {
+            children.push(bracket_highlight(crate::cursor::Pos::new(a.line - scroll, a.col), metrics, palette));
+        }
+        if b.line >= scroll && b.line < end_line {
+            children.push(bracket_highlight(crate::cursor::Pos::new(b.line - scroll, b.col), metrics, palette));
+        }
+    }
+
+    // 3) Texto — sólo las líneas en viewport.
+    //    Si `phantom_guard_lines` está activo, cada guarda recibe un
+    //    divisor fantasma (segmento horizontal con baja opacidad)
+    //    atravesando su centro — sin texto, sólo un susurro visual.
+    for n in scroll..end_line {
+        let text = state.buffer.line(n);
+        let text = text.trim_end_matches('\n').to_owned();
+        let local_line = n - scroll;
+        if metrics.phantom_guard_lines && state.is_guard_line(n) {
+            children.push(phantom_guard_divider(local_line, metrics, palette));
+            continue;
+        }
+        if let Some(line_spans) = spans_per_line.get(n) {
+            children.push(line_text_tokens(local_line, &text, line_spans, metrics, palette, syntax));
+        } else {
+            children.push(line_text_plain(local_line, text, metrics, palette));
+        }
+    }
+
+    // 3b) Diagnostics — subrayado bajo el rango, color por severity.
+    for d in &state.diagnostics {
+        children.extend(diagnostic_underline(d, scroll, end_line, metrics, palette));
+    }
+
+    // 4) Caret — uno por cursor, sólo si visible.
+    for c in state.all_cursors() {
+        let p = c.caret;
+        if p.line >= scroll && p.line < end_line {
+            let local = crate::cursor::Pos::new(p.line - scroll, p.col);
+            children.push(caret_rect(local, metrics, palette));
+        }
+    }
+
+    let click_cb = on_pointer.clone();
+    let drag_cb = on_pointer;
+    View::new(Style {
+        flex_grow: 1.0,
+        size: Size { width: percent(1.0_f32), height: length(height) },
+        ..Default::default()
+    })
+    .fill(palette.bg)
+    .clip(true)
+    .on_click_at(move |x, y, _w, _h| click_cb(PointerEvent::Click { x, y }))
+    .draggable_at(move |phase, dx, dy, lx, ly| match phase {
+        llimphi_ui::DragPhase::Move => drag_cb(PointerEvent::Drag {
+            initial_x: lx,
+            initial_y: ly,
+            dx,
+            dy,
+        }),
+        llimphi_ui::DragPhase::End => None,
+    })
+    .children(children)
+}
+
+/// Rect de tinte para una línea. Cubre el ancho completo y el alto
+/// exacto de la línea, pintado al color literal pasado (el caller
+/// elige el alpha). Posición absoluta dentro del área de contenido.
+fn line_tint<Msg: Clone + 'static>(
+    line: usize,
+    color: Color,
+    metrics: EditorMetrics,
+) -> View<Msg> {
+    View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(0.0_f32),
+            top: length(line as f32 * metrics.line_height),
+            right: length(0.0_f32),
+            bottom: auto(),
+        },
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(metrics.line_height),
+        },
+        ..Default::default()
+    })
+    .fill(color)
+}
+
+fn line_highlight<Msg: Clone + 'static>(
+    line: usize,
+    metrics: EditorMetrics,
+    palette: &EditorPalette,
+) -> View<Msg> {
+    View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(0.0_f32),
+            top: length(line as f32 * metrics.line_height),
+            right: length(0.0_f32),
+            bottom: auto(),
+        },
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(metrics.line_height),
+        },
+        ..Default::default()
+    })
+    .fill(palette.bg_current_line)
+}
+
+/// Línea-fantasma para una guarda: un segmento horizontal con baja
+/// opacidad atravesando el centro vertical de la línea. Ancho
+/// limitado para que parezca un susurro y no una regla. Color derivado
+/// de `fg_line_number` que ya está pensado como "muted".
+fn phantom_guard_divider<Msg: Clone + 'static>(
+    line: usize,
+    metrics: EditorMetrics,
+    palette: &EditorPalette,
+) -> View<Msg> {
+    let h = 1.0_f32;
+    let y = line as f32 * metrics.line_height + (metrics.line_height - h) * 0.5;
+    // Largo visual del divisor — generoso pero no infinito.
+    let w = 320.0_f32;
+    View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(8.0_f32),
+            top: length(y),
+            right: auto(),
+            bottom: auto(),
+        },
+        size: Size {
+            width: length(w),
+            height: length(h),
+        },
+        ..Default::default()
+    })
+    .fill(with_alpha(palette.fg_line_number, 0.18))
+}
+
+fn line_text_plain<Msg: Clone + 'static>(
+    line: usize,
+    text: String,
+    metrics: EditorMetrics,
+    palette: &EditorPalette,
+) -> View<Msg> {
+    View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(4.0_f32),
+            top: length(line as f32 * metrics.line_height),
+            right: auto(),
+            bottom: auto(),
+        },
+        size: Size {
+            width: length(2000.0_f32),
+            height: length(metrics.line_height),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .text_aligned(text, metrics.font_size, palette.fg_text, Alignment::Start)
+}
+
+/// Renderiza una línea como secuencia de Views absolutos posicionados,
+/// cada uno con el color de su span. El posicionamiento horizontal usa
+/// `char_width` (mono); para fuentes proporcionales habría que medir
+/// cada token con parley (TODO).
+fn line_text_tokens<Msg: Clone + 'static>(
+    line: usize,
+    text: &str,
+    spans: &[Span],
+    metrics: EditorMetrics,
+    palette: &EditorPalette,
+    syntax: &SyntaxPalette,
+) -> View<Msg> {
+    // char-col → byte-offset: parley rangea por bytes, los spans por chars.
+    let mut byte_at: Vec<usize> = Vec::with_capacity(text.len() + 1);
+    let mut acc = 0usize;
+    byte_at.push(0);
+    for ch in text.chars() {
+        acc += ch.len_utf8();
+        byte_at.push(acc);
+    }
+    let nchars = byte_at.len() - 1;
+
+    // Un run de color por span no-Other (el default_color cubre el resto).
+    let mut runs: Vec<(usize, usize, Color)> = Vec::with_capacity(spans.len());
+    for span in spans {
+        if span.start_col >= nchars || matches!(span.kind, TokenKind::Other) {
+            continue;
+        }
+        let end = span.end_col.min(nchars);
+        if end <= span.start_col {
+            continue;
+        }
+        runs.push((byte_at[span.start_col], byte_at[end], syntax.color(span.kind)));
+    }
+
+    // Una sola línea shapeada de una vez, multicolor, en lugar de un nodo
+    // (+ layout parley) por token. El `+4` de gutter va en el inset del nodo.
+    View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(4.0_f32),
+            top: length(line as f32 * metrics.line_height),
+            right: auto(),
+            bottom: auto(),
+        },
+        size: Size { width: length(2000.0_f32), height: length(metrics.line_height) },
+        ..Default::default()
+    })
+    .text_runs(
+        text.to_string(),
+        metrics.font_size,
+        palette.fg_text,
+        runs,
+        Alignment::Start,
+    )
+}
+
+fn caret_rect<Msg: Clone + 'static>(
+    caret: Pos,
+    metrics: EditorMetrics,
+    palette: &EditorPalette,
+) -> View<Msg> {
+    let x = 4.0 + caret.col as f32 * metrics.char_width;
+    let y = caret.line as f32 * metrics.line_height;
+    View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(x),
+            top: length(y + 2.0),
+            right: auto(),
+            bottom: auto(),
+        },
+        size: Size { width: length(2.0_f32), height: length(metrics.line_height - 4.0) },
+        ..Default::default()
+    })
+    .fill(palette.caret)
+}
+
+fn bracket_highlight<Msg: Clone + 'static>(
+    pos: Pos,
+    metrics: EditorMetrics,
+    palette: &EditorPalette,
+) -> View<Msg> {
+    let x = 4.0 + pos.col as f32 * metrics.char_width;
+    let y = pos.line as f32 * metrics.line_height;
+    View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(x),
+            top: length(y),
+            right: auto(),
+            bottom: auto(),
+        },
+        size: Size { width: length(metrics.char_width), height: length(metrics.line_height) },
+        ..Default::default()
+    })
+    .fill(palette.bg_bracket_pair)
+}
+
+fn diagnostic_underline<Msg: Clone + 'static>(
+    d: &Diagnostic,
+    scroll: usize,
+    end_viewport: usize,
+    metrics: EditorMetrics,
+    palette: &EditorPalette,
+) -> Vec<View<Msg>> {
+    let color = match d.severity {
+        Severity::Error => palette.diag_error,
+        Severity::Warning => palette.diag_warning,
+        Severity::Information => palette.diag_info,
+        Severity::Hint => palette.diag_hint,
+    };
+    let mut out: Vec<View<Msg>> = Vec::new();
+    let first = d.range.start.line.max(scroll);
+    let last = d.range.end.line.min(end_viewport.saturating_sub(1));
+    if first > last {
+        return out;
+    }
+    for line in first..=last {
+        let col_start = if line == d.range.start.line { d.range.start.col } else { 0 };
+        let col_end = if line == d.range.end.line {
+            d.range.end.col
+        } else {
+            // Fin de línea — extendemos 1 char extra para visualizar el wrap.
+            col_start + 1
+        };
+        if col_end <= col_start {
+            continue;
+        }
+        let x = 4.0 + col_start as f32 * metrics.char_width;
+        let w = (col_end - col_start) as f32 * metrics.char_width;
+        // Subrayado de 1.5 px al final de la línea.
+        let y = (line - scroll) as f32 * metrics.line_height + metrics.line_height - 2.0;
+        out.push(
+            View::new(Style {
+                position: Position::Absolute,
+                inset: Rect {
+                    left: length(x),
+                    top: length(y),
+                    right: auto(),
+                    bottom: auto(),
+                },
+                size: Size { width: length(w), height: length(1.5_f32) },
+                ..Default::default()
+            })
+            .fill(color),
+        );
+    }
+    out
+}
+
+fn match_rects<Msg: Clone + 'static>(
+    state: &EditorState,
+    start_off: usize,
+    end_off: usize,
+    scroll: usize,
+    end_viewport: usize,
+    metrics: EditorMetrics,
+    palette: &EditorPalette,
+) -> Vec<View<Msg>> {
+    if start_off == end_off {
+        return vec![];
+    }
+    let (start_line, start_col) = state.buffer.offset_to_pos(start_off);
+    let (end_line, end_col) = state.buffer.offset_to_pos(end_off);
+    let mut out: Vec<View<Msg>> = Vec::new();
+    let first = start_line.max(scroll);
+    let last = end_line.min(end_viewport.saturating_sub(1));
+    if first > last {
+        return out;
+    }
+    for line in first..=last {
+        let line_len = state.buffer.line_len_chars(line);
+        let col_start = if line == start_line { start_col } else { 0 };
+        let col_end = if line == end_line { end_col } else { line_len };
+        if col_end <= col_start {
+            continue;
+        }
+        let x = 4.0 + col_start as f32 * metrics.char_width;
+        let w = (col_end - col_start) as f32 * metrics.char_width;
+        let local_y = (line - scroll) as f32 * metrics.line_height;
+        out.push(
+            View::new(Style {
+                position: Position::Absolute,
+                inset: Rect {
+                    left: length(x),
+                    top: length(local_y),
+                    right: auto(),
+                    bottom: auto(),
+                },
+                size: Size { width: length(w), height: length(metrics.line_height) },
+                ..Default::default()
+            })
+            .fill(palette.bg_match),
+        );
+    }
+    out
+}
+
+fn selection_rects_for_cursor<Msg: Clone + 'static>(
+    state: &EditorState,
+    cursor: &crate::cursor::Cursor,
+    scroll: usize,
+    end_viewport: usize,
+    metrics: EditorMetrics,
+    palette: &EditorPalette,
+) -> Vec<View<Msg>> {
+    let (start_off, end_off) = cursor.selection_range(&state.buffer);
+    if start_off == end_off {
+        return vec![];
+    }
+    let (start_line, start_col) = state.buffer.offset_to_pos(start_off);
+    let (end_line, end_col) = state.buffer.offset_to_pos(end_off);
+
+    let mut out: Vec<View<Msg>> = Vec::new();
+    let first = start_line.max(scroll);
+    let last = end_line.min(end_viewport.saturating_sub(1));
+    if first > last {
+        return out;
+    }
+    for line in first..=last {
+        let line_len = state.buffer.line_len_chars(line);
+        let col_start = if line == start_line { start_col } else { 0 };
+        let col_end = if line == end_line { end_col } else { line_len };
+        let x = 4.0 + col_start as f32 * metrics.char_width;
+        let extra = if line < end_line { 1.0 } else { 0.0 };
+        let w = ((col_end - col_start) as f32 + extra) * metrics.char_width;
+        if w <= 0.0 {
+            continue;
+        }
+        let local_y = (line - scroll) as f32 * metrics.line_height;
+        out.push(
+            View::new(Style {
+                position: Position::Absolute,
+                inset: Rect {
+                    left: length(x),
+                    top: length(local_y),
+                    right: auto(),
+                    bottom: auto(),
+                },
+                size: Size { width: length(w), height: length(metrics.line_height) },
+                ..Default::default()
+            })
+            .fill(palette.bg_selection),
+        );
+    }
+    out
+}
diff --git a/widgets/text-input/Cargo.toml b/widgets/text-input/Cargo.toml
new file mode 100644
index 0000000..272da9a
--- /dev/null
+++ b/widgets/text-input/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-widget-text-input"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-text-input — input de texto single-line para Llimphi. Wrappea el llimphi-widget-text-editor en modo single_line para heredar selección con shift+arrows, undo/redo, word-jump con Ctrl, sin perder la API compacta original."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-widget-text-editor = { workspace = true }
diff --git a/widgets/text-input/LEEME.md b/widgets/text-input/LEEME.md
new file mode 100644
index 0000000..9f9f233
--- /dev/null
+++ b/widgets/text-input/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-text-input
+
+> Input single-line para [llimphi](../../README.md).
+
+Reusa partes del [`text-editor`](../text-editor/README.md) pero con UI ajustada: sin multi-line, sin syntax, con placeholder, foco azul, enter dispara `Msg::Submit`.
diff --git a/widgets/text-input/README.md b/widgets/text-input/README.md
new file mode 100644
index 0000000..72a655d
--- /dev/null
+++ b/widgets/text-input/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-text-input
+
+> Single-line input for [llimphi](../../README.md).
+
+Reuses parts of [`text-editor`](../text-editor/README.md) but with tuned UI: no multi-line, no syntax, with placeholder, blue focus, enter fires `Msg::Submit`.
diff --git a/widgets/text-input/src/lib.rs b/widgets/text-input/src/lib.rs
new file mode 100644
index 0000000..5da19b5
--- /dev/null
+++ b/widgets/text-input/src/lib.rs
@@ -0,0 +1,270 @@
+//! `llimphi-widget-text-input` — input de texto single-line para Llimphi.
+//!
+//! Después del refactor 2026-05-25, [`TextInputState`] es un wrapper fino
+//! sobre [`llimphi_widget_text_editor::EditorState`] con
+//! `options.single_line = true` + un flag `masked` para passwords. La
+//! API pública (`new`, `masked`, `text`, `set_text`, `clear`, `apply_key`,
+//! `is_empty`, `push_str`, `pop`, `is_masked`) se mantiene salvo que
+//! `text()` ahora devuelve `String` (antes `&str`) — los callers que
+//! hacían `.text().trim().to_string()` siguen funcionando idénticos.
+//!
+//! Beneficios heredados del editor: selección con Shift+arrows, undo/
+//! redo con Ctrl+Z/Y, salto de palabra con Ctrl+arrows, Home/End,
+//! Delete (además de Backspace). Tab/Enter siguen ignorados (single_line).
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{KeyEvent, View};
+use llimphi_widget_text_editor::{EditorOptions, EditorState};
+
+/// Paleta del input. Defaults son una variante dark con borde tenue que
+/// se enciende al focar, equivalente conceptual al `nahual-theme` dark.
+#[derive(Debug, Clone, Copy)]
+pub struct TextInputPalette {
+    pub bg: Color,
+    pub bg_focus: Color,
+    pub border: Color,
+    pub border_focus: Color,
+    pub fg_text: Color,
+    pub fg_placeholder: Color,
+}
+
+impl Default for TextInputPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl TextInputPalette {
+    /// Construye la paleta desde un `Theme` semántico.
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg: t.bg_input,
+            bg_focus: t.bg_input_focus,
+            border: t.border,
+            border_focus: t.border_focus,
+            fg_text: t.fg_text,
+            fg_placeholder: t.fg_placeholder,
+        }
+    }
+}
+
+/// Estado del input. Wrappea un `EditorState` single-line.
+#[derive(Debug, Clone, Default)]
+pub struct TextInputState {
+    inner: EditorState,
+    masked: bool,
+}
+
+impl TextInputState {
+    /// Input vacío visible (texto plano).
+    pub fn new() -> Self {
+        Self {
+            inner: EditorState::with_options(EditorOptions {
+                single_line: true,
+                ..EditorOptions::default()
+            }),
+            masked: false,
+        }
+    }
+
+    /// Input enmascarado — para campos de contraseña.
+    pub fn masked() -> Self {
+        Self { masked: true, ..Self::new() }
+    }
+
+    /// Texto actual. Devuelve `String` (antes `&str` — el rope no expone
+    /// slice borrowed sin clone). Para evitar copias innecesarias, los
+    /// callers que sólo necesitan derivar `.trim()` o `.is_empty()`
+    /// pueden hacerlo directo sobre el `String` devuelto.
+    pub fn text(&self) -> String {
+        self.inner.text()
+    }
+
+    pub fn is_empty(&self) -> bool {
+        self.inner.is_empty()
+    }
+
+    pub fn is_masked(&self) -> bool {
+        self.masked
+    }
+
+    pub fn clear(&mut self) {
+        self.inner.set_text("");
+    }
+
+    pub fn set_text(&mut self, s: impl Into<String>) {
+        let s = s.into();
+        self.inner.set_text(&s);
+    }
+
+    pub fn push_str(&mut self, s: &str) {
+        let combined = format!("{}{}", self.inner.text(), s);
+        self.inner.set_text(&combined);
+    }
+
+    pub fn pop(&mut self) -> Option<char> {
+        let mut t = self.inner.text();
+        let ch = t.pop()?;
+        self.inner.set_text(&t);
+        Some(ch)
+    }
+
+    /// Aplica una tecla al estado. Devuelve `true` si cambió el contenido
+    /// **o** sólo se movió el cursor (cualquier cosa que requiera repintar).
+    pub fn apply_key(&mut self, event: &KeyEvent) -> bool {
+        self.inner.apply_key(event).touched()
+    }
+
+    /// Acceso de bajo nivel al editor interno — útil si el caller
+    /// quiere consultar cursor/selección o aplicar ops avanzadas.
+    pub fn editor(&self) -> &EditorState {
+        &self.inner
+    }
+    pub fn editor_mut(&mut self) -> &mut EditorState {
+        &mut self.inner
+    }
+}
+
+/// Compone el input box: borde de 1 px (rect padre coloreado), relleno
+/// interno, texto o placeholder, caret simulado al final si está focado.
+/// Click sobre el box emite `on_focus` (típicamente `Msg::Focus(Field)`).
+pub fn text_input_view<Msg: Clone + 'static>(
+    state: &TextInputState,
+    placeholder: &str,
+    focused: bool,
+    palette: &TextInputPalette,
+    on_focus: Msg,
+) -> View<Msg> {
+    let raw = state.text();
+    let is_empty = raw.is_empty();
+    let shown = if is_empty {
+        placeholder.to_string()
+    } else if state.masked {
+        "•".repeat(raw.chars().count())
+    } else {
+        raw
+    };
+    // El cambio de bg al focus ya transmite "este es el activo"; sin
+    // caret glyph (la fuente default rendea cuadrados de fallback).
+    let display = shown;
+    let text_color = if is_empty {
+        palette.fg_placeholder
+    } else {
+        palette.fg_text
+    };
+    let (bg, border) = if focused {
+        (palette.bg_focus, palette.border_focus)
+    } else {
+        (palette.bg, palette.border)
+    };
+
+    let inner = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        padding: Rect {
+            left: length(10.0_f32),
+            right: length(10.0_f32),
+            top: length(6.0_f32),
+            bottom: length(6.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .fill(bg)
+    .radius(3.0)
+    .text_aligned(display, 13.0, text_color, Alignment::Start);
+
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(34.0_f32),
+        },
+        padding: Rect {
+            left: length(1.0_f32),
+            right: length(1.0_f32),
+            top: length(1.0_f32),
+            bottom: length(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(border)
+    .radius(4.0)
+    .on_click(on_focus)
+    .children(vec![inner])
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use llimphi_ui::{Key, KeyState, NamedKey};
+
+    fn key_press(key: Key, text: Option<&str>) -> KeyEvent {
+        KeyEvent {
+            key,
+            state: KeyState::Pressed,
+            text: text.map(|s| s.to_string()),
+            modifiers: Default::default(),
+            repeat: false,
+        }
+    }
+
+    #[test]
+    fn apply_key_inserts_printable_chars() {
+        let mut s = TextInputState::new();
+        let ev = key_press(Key::Character("a".into()), Some("a"));
+        assert!(s.apply_key(&ev));
+        assert_eq!(s.text(), "a");
+    }
+
+    #[test]
+    fn apply_key_backspace_pops() {
+        let mut s = TextInputState::new();
+        s.set_text("hola");
+        let ev = key_press(Key::Named(NamedKey::Backspace), None);
+        assert!(s.apply_key(&ev));
+        assert_eq!(s.text(), "hol");
+    }
+
+    #[test]
+    fn enter_ignorado_en_single_line() {
+        let mut s = TextInputState::new();
+        s.set_text("hola");
+        let enter = key_press(Key::Named(NamedKey::Enter), None);
+        assert!(!s.apply_key(&enter));
+        assert_eq!(s.text(), "hola");
+    }
+
+    #[test]
+    fn masked_state_is_masked() {
+        let s = TextInputState::masked();
+        assert!(s.is_masked());
+    }
+
+    #[test]
+    fn flecha_izquierda_mueve_cursor() {
+        // El refactor agrega esta capacidad — antes no había movimiento.
+        let mut s = TextInputState::new();
+        s.set_text("hola");
+        let arr = key_press(Key::Named(NamedKey::ArrowLeft), None);
+        assert!(s.apply_key(&arr));
+        assert_eq!(s.editor().cursor.caret.col, 3);
+    }
+
+    #[test]
+    fn push_str_y_pop_funcionan() {
+        let mut s = TextInputState::new();
+        s.push_str("hola");
+        assert_eq!(s.text(), "hola");
+        assert_eq!(s.pop(), Some('a'));
+        assert_eq!(s.text(), "hol");
+    }
+}
diff --git a/widgets/theme-switcher/Cargo.toml b/widgets/theme-switcher/Cargo.toml
new file mode 100644
index 0000000..a310cb7
--- /dev/null
+++ b/widgets/theme-switcher/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "llimphi-widget-theme-switcher"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-theme-switcher — botón que cicla los presets de `llimphi_theme::Theme`. Análogo Llimphi del `nahual-widget-theme-switcher` GPUI: el caller lifta `Msg::ChangeTheme(Theme)` y reasigna el theme en su Model."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+
+[[example]]
+name = "theme_switcher_demo"
+path = "examples/theme_switcher_demo.rs"
diff --git a/widgets/theme-switcher/LEEME.md b/widgets/theme-switcher/LEEME.md
new file mode 100644
index 0000000..74271fb
--- /dev/null
+++ b/widgets/theme-switcher/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-theme-switcher
+
+> Selector de tema para [llimphi](../../README.md).
+
+Botón que cicla Dark → Light → Aurora → Sunset, escribe la preferencia en `wawa-config`. Useful en el panel del escritorio.
diff --git a/widgets/theme-switcher/README.md b/widgets/theme-switcher/README.md
new file mode 100644
index 0000000..14e358c
--- /dev/null
+++ b/widgets/theme-switcher/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-theme-switcher
+
+> Theme selector for [llimphi](../../README.md).
+
+Button that cycles Dark → Light → Aurora → Sunset, writes the preference to `wawa-config`. Useful in the desktop panel.
diff --git a/widgets/theme-switcher/examples/theme_switcher_demo.rs b/widgets/theme-switcher/examples/theme_switcher_demo.rs
new file mode 100644
index 0000000..157391e
--- /dev/null
+++ b/widgets/theme-switcher/examples/theme_switcher_demo.rs
@@ -0,0 +1,153 @@
+//! Showcase de `llimphi-widget-theme-switcher`.
+//!
+//! Una ventana con el switcher en la cabecera + un sample de paneles
+//! que cambian de color al ciclar. Validación visual de que el theme
+//! propaga a la UI: al hacer click en el switcher, los paneles se
+//! repintan con el siguiente preset.
+//!
+//! Corré: `cargo run -p llimphi-widget-theme-switcher --example theme_switcher_demo --release`.
+
+use llimphi_theme::Theme;
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, AlignItems, FlexDirection, JustifyContent, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{App, Handle, View};
+use llimphi_widget_theme_switcher::theme_switcher_view;
+
+#[derive(Clone, Debug)]
+enum Msg {
+    ChangeTheme(Theme),
+}
+
+struct Model {
+    theme: Theme,
+}
+
+struct Showcase;
+
+impl App for Showcase {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · theme-switcher"
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        Model {
+            theme: Theme::dark(),
+        }
+    }
+
+    fn update(model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
+        let mut m = model;
+        match msg {
+            Msg::ChangeTheme(t) => m.theme = t,
+        }
+        m
+    }
+
+    fn view(model: &Model) -> View<Msg> {
+        let switcher = theme_switcher_view(&model.theme, Msg::ChangeTheme);
+
+        let header = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(48.0_f32),
+            },
+            flex_direction: FlexDirection::Row,
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(JustifyContent::SpaceBetween),
+            padding: Rect {
+                left: length(16.0_f32),
+                right: length(16.0_f32),
+                top: length(0.0_f32),
+                bottom: length(0.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(model.theme.bg_panel)
+        .children(vec![
+            View::new(Style {
+                size: Size {
+                    width: length(220.0_f32),
+                    height: length(32.0_f32),
+                },
+                ..Default::default()
+            })
+            .text_aligned(
+                format!("Preset actual: {}", model.theme.name),
+                13.0,
+                model.theme.fg_text,
+                Alignment::Start,
+            ),
+            switcher,
+        ]);
+
+        let card_a = sample_card("Panel principal", &model.theme, model.theme.bg_panel);
+        let card_b = sample_card(
+            "Strip alternativo",
+            &model.theme,
+            model.theme.bg_panel_alt,
+        );
+        let card_c = sample_card("Input focado", &model.theme, model.theme.bg_input_focus);
+
+        let body = View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            padding: Rect {
+                left: length(24.0_f32),
+                right: length(24.0_f32),
+                top: length(24.0_f32),
+                bottom: length(24.0_f32),
+            },
+            gap: Size {
+                width: length(0.0_f32),
+                height: length(14.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(model.theme.bg_app)
+        .children(vec![card_a, card_b, card_c]);
+
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(model.theme.bg_app)
+        .children(vec![header, body])
+    }
+}
+
+fn sample_card(label: &str, theme: &Theme, bg: llimphi_ui::llimphi_raster::peniko::Color) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(60.0_f32),
+        },
+        padding: Rect {
+            left: length(14.0_f32),
+            right: length(14.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .fill(bg)
+    .radius(6.0)
+    .text_aligned(label.to_string(), 13.0, theme.fg_text, Alignment::Start)
+}
+
+fn main() {
+    llimphi_ui::run::<Showcase>();
+}
diff --git a/widgets/theme-switcher/src/lib.rs b/widgets/theme-switcher/src/lib.rs
new file mode 100644
index 0000000..560fa9a
--- /dev/null
+++ b/widgets/theme-switcher/src/lib.rs
@@ -0,0 +1,179 @@
+//! `llimphi-widget-theme-switcher` — botón que rota los presets de
+//! [`llimphi_theme::Theme`].
+//!
+//! Análogo Llimphi del `nahual-widget-theme-switcher` GPUI. Diferencia
+//! estructural: GPUI lleva el theme en un `Global` y el switcher lo
+//! reemplaza con `cx.set_global`; Llimphi no tiene globals — el caller
+//! guarda el theme en su `Model` y reasigna en su `update`. El widget
+//! sólo emite `on_change(next_theme)` cuando el botón se clickea, donde
+//! `next_theme` es el siguiente preset de [`Theme::next_after`].
+//!
+//! El label del botón muestra el nombre del preset actual con un signo
+//! de rotación (`Tema: Dark ▸`). Los colores salen del `Theme` actual
+//! para que el switcher sea coherente con el resto de la UI.
+//!
+//! # Uso
+//!
+//! ```ignore
+//! use llimphi_widget_theme_switcher::theme_switcher_view;
+//!
+//! // En App::view:
+//! let switcher = theme_switcher_view(&model.theme, Msg::ChangeTheme);
+//! ```
+//!
+//! `Msg::ChangeTheme(Theme)` lo define la app; en `update`:
+//!
+//! ```ignore
+//! Msg::ChangeTheme(t) => { model.theme = t; }
+//! ```
+
+#![forbid(unsafe_code)]
+
+use llimphi_theme::Theme;
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, AlignItems, JustifyContent, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+
+/// Paleta del switcher. Por default replica el patrón del switcher de
+/// nahual: `bg_panel_alt` + hover `bg_row_hover`, texto `fg_text`.
+#[derive(Debug, Clone, Copy)]
+pub struct ThemeSwitcherPalette {
+    pub bg: Color,
+    pub bg_hover: Color,
+    pub fg: Color,
+    pub radius: f64,
+}
+
+impl Default for ThemeSwitcherPalette {
+    fn default() -> Self {
+        Self::from_theme(&Theme::dark())
+    }
+}
+
+impl ThemeSwitcherPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            bg: t.bg_panel_alt,
+            bg_hover: t.bg_row_hover,
+            fg: t.fg_text,
+            radius: 3.0,
+        }
+    }
+}
+
+/// Compone el switcher: chip con texto `Tema: <nombre> ▸`. Click rota
+/// al siguiente preset y emite `on_change(next)`.
+///
+/// Toma el `current` por referencia para no clonar el `Theme` entero
+/// (es `Copy`, pero la API se mantiene consistente con `Palette::from_theme`).
+/// La paleta se deriva del `current` para que el chip use el mismo set
+/// de colores que el resto de la UI.
+pub fn theme_switcher_view<Msg: Clone + 'static>(
+    current: &Theme,
+    on_change: impl Fn(Theme) -> Msg,
+) -> View<Msg> {
+    let palette = ThemeSwitcherPalette::from_theme(current);
+    theme_switcher_styled(current, &palette, on_change)
+}
+
+/// Variante con paleta explícita — útil cuando la app quiere un look
+/// distinto al default (botón destacado, accent del switcher fijo, etc.).
+pub fn theme_switcher_styled<Msg: Clone + 'static>(
+    current: &Theme,
+    palette: &ThemeSwitcherPalette,
+    on_change: impl Fn(Theme) -> Msg,
+) -> View<Msg> {
+    let next = Theme::next_after(current.name);
+    let label = format!("Tema: {} ▸", current.name);
+
+    View::new(Style {
+        size: Size {
+            width: length(140.0_f32),
+            height: length(26.0_f32),
+        },
+        padding: Rect {
+            left: length(10.0_f32),
+            right: length(10.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        ..Default::default()
+    })
+    .fill(palette.bg)
+    .hover_fill(palette.bg_hover)
+    .radius(palette.radius)
+    .text_aligned(label, 11.0, palette.fg, Alignment::Start)
+    .on_click(on_change(next))
+}
+
+/// Variante de tamaño flexible — toma el ancho dado por el padre y se
+/// adapta al alto natural del slot. Útil dentro de toolbars con flexbox.
+pub fn theme_switcher_flex<Msg: Clone + 'static>(
+    current: &Theme,
+    palette: &ThemeSwitcherPalette,
+    on_change: impl Fn(Theme) -> Msg,
+) -> View<Msg> {
+    let next = Theme::next_after(current.name);
+    let label = format!("Tema: {} ▸", current.name);
+
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(26.0_f32),
+        },
+        padding: Rect {
+            left: length(10.0_f32),
+            right: length(10.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .fill(palette.bg)
+    .hover_fill(palette.bg_hover)
+    .radius(palette.radius)
+    .text_aligned(label, 11.0, palette.fg, Alignment::Start)
+    .on_click(on_change(next))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[derive(Debug, Clone, PartialEq)]
+    enum Msg {
+        Change(&'static str),
+    }
+
+    #[test]
+    fn switcher_constructs_with_a_default_theme() {
+        let t = Theme::dark();
+        let _v = theme_switcher_view::<Msg>(&t, |th| Msg::Change(th.name));
+        // Si el constructor no panicó, el widget queda armado.
+    }
+
+    #[test]
+    fn palette_from_theme_matches_panel_alt_slots() {
+        let t = Theme::dark();
+        let p = ThemeSwitcherPalette::from_theme(&t);
+        // No comparamos por igualdad de Color (no implementa PartialEq);
+        // sí garantizamos que la paleta derivó del theme — radius default.
+        assert_eq!(p.radius, 3.0);
+    }
+
+    #[test]
+    fn on_change_receives_the_next_preset() {
+        // Verificación funcional independiente: la rotación que verá el
+        // handler coincide con `Theme::next_after`.
+        let current = Theme::dark();
+        let expected_next = Theme::next_after(current.name).name;
+        assert_eq!(expected_next, "Light");
+    }
+}
diff --git a/widgets/tiled/Cargo.toml b/widgets/tiled/Cargo.toml
new file mode 100644
index 0000000..7001e75
--- /dev/null
+++ b/widgets/tiled/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "llimphi-widget-tiled"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-tiled — grid auto cols×rows con title bar por tile. Análogo Llimphi al `nahual-widget-tiled` GPUI (sin drag-to-swap todavía: requiere drop-targets globales que llimphi-ui aún no expone)."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+
+[[example]]
+name = "tiled_demo"
+path = "examples/tiled_demo.rs"
diff --git a/widgets/tiled/LEEME.md b/widgets/tiled/LEEME.md
new file mode 100644
index 0000000..6803870
--- /dev/null
+++ b/widgets/tiled/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-tiled
+
+> Tiled window manager dentro de la app para [llimphi](../../README.md).
+
+Splits anidados horizontal/vertical sin overlap (estilo i3/sway intra-app). Atajos para split/swap/cerrar. Usado por `nada` cuando se abren múltiples buffers.
diff --git a/widgets/tiled/README.md b/widgets/tiled/README.md
new file mode 100644
index 0000000..6f5a5e1
--- /dev/null
+++ b/widgets/tiled/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-tiled
+
+> Intra-app tiled window manager for [llimphi](../../README.md).
+
+Nested horizontal/vertical splits without overlap (i3/sway-style inside one app). Shortcuts for split/swap/close. Used by `nada` when multiple buffers are open.
diff --git a/widgets/tiled/examples/tiled_demo.rs b/widgets/tiled/examples/tiled_demo.rs
new file mode 100644
index 0000000..07e775f
--- /dev/null
+++ b/widgets/tiled/examples/tiled_demo.rs
@@ -0,0 +1,218 @@
+//! Showcase de `llimphi-widget-tiled` con drag-to-swap. Cinco paneles
+//! heterogéneos; arrastrá la title bar de uno sobre otro para
+//! intercambiarlos. El destino se ilumina mientras está bajo el cursor.
+//!
+//! Corré con: `cargo run -p llimphi-widget-tiled --example tiled_demo --release`.
+
+use llimphi_theme::Theme;
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{App, Handle, View};
+use llimphi_widget_tiled::{tiled_view_reorderable, TileSpec, TiledPalette};
+
+#[derive(Clone, Copy, PartialEq, Eq)]
+enum TileId {
+    Logs,
+    Metrics,
+    Alerts,
+    Uptime,
+    Queue,
+}
+
+#[derive(Clone)]
+enum Msg {
+    Swap { from: usize, to: usize },
+}
+
+struct Model {
+    tiles: Vec<TileId>,
+}
+
+struct Showcase;
+
+impl App for Showcase {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · tiled showcase (drag titles para intercambiar)"
+    }
+
+    fn initial_size() -> (u32, u32) {
+        (1100, 720)
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        Model {
+            tiles: vec![
+                TileId::Logs,
+                TileId::Metrics,
+                TileId::Alerts,
+                TileId::Uptime,
+                TileId::Queue,
+            ],
+        }
+    }
+
+    fn update(model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
+        let mut m = model;
+        match msg {
+            Msg::Swap { from, to } => {
+                if from != to && from < m.tiles.len() && to < m.tiles.len() {
+                    m.tiles.swap(from, to);
+                }
+            }
+        }
+        m
+    }
+
+    fn view(model: &Model) -> View<Msg> {
+        let theme = Theme::dark();
+        let palette = TiledPalette::from_theme(&theme);
+
+        let tiles: Vec<TileSpec<Msg>> = model
+            .tiles
+            .iter()
+            .map(|id| match id {
+                TileId::Logs => TileSpec {
+                    label: "logs".into(),
+                    content: log_body(&theme),
+                },
+                TileId::Metrics => TileSpec {
+                    label: "métricas".into(),
+                    content: metrics_body(&theme),
+                },
+                TileId::Alerts => TileSpec {
+                    label: "alertas".into(),
+                    content: alerts_body(&theme),
+                },
+                TileId::Uptime => TileSpec {
+                    label: "uptime".into(),
+                    content: uptime_body(&theme),
+                },
+                TileId::Queue => TileSpec {
+                    label: "queue".into(),
+                    content: queue_body(&theme),
+                },
+            })
+            .collect();
+
+        tiled_view_reorderable(
+            tiles,
+            |from, to| Some(Msg::Swap { from, to }),
+            &palette,
+        )
+    }
+}
+
+fn padded(text: &str, size: f32, color: Color, align: Alignment) -> View<Msg> {
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        flex_grow: 1.0,
+        padding: Rect {
+            left: length(14.0_f32),
+            right: length(14.0_f32),
+            top: length(10.0_f32),
+            bottom: length(10.0_f32),
+        },
+        ..Default::default()
+    })
+    .text_aligned(text.to_string(), size, color, align)
+}
+
+fn log_body(theme: &Theme) -> View<Msg> {
+    padded(
+        "[12:01:33] boot\n[12:01:34] config ok\n[12:01:35] esperando eventos…\n[12:02:01] cliente 1 conectó\n[12:02:02] cliente 2 conectó",
+        12.0,
+        theme.fg_text,
+        Alignment::Start,
+    )
+}
+
+fn metrics_body(theme: &Theme) -> View<Msg> {
+    let stat = |label: &str, value: &str, color: Color| -> View<Msg> {
+        let label_view = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(14.0_f32),
+            },
+            ..Default::default()
+        })
+        .text_aligned(label.to_string(), 10.0, theme.fg_muted, Alignment::Start);
+        let value_view = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(28.0_f32),
+            },
+            ..Default::default()
+        })
+        .text_aligned(value.to_string(), 22.0, color, Alignment::Start);
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            flex_grow: 1.0,
+            ..Default::default()
+        })
+        .children(vec![label_view, value_view])
+    };
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        gap: Size {
+            width: length(12.0_f32),
+            height: length(0.0_f32),
+        },
+        padding: Rect {
+            left: length(14.0_f32),
+            right: length(14.0_f32),
+            top: length(10.0_f32),
+            bottom: length(10.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![
+        stat("cpu", "37%", theme.accent),
+        stat("ram", "1.2 G", theme.fg_text),
+        stat("net", "12 kB/s", theme.fg_text),
+    ])
+}
+
+fn alerts_body(theme: &Theme) -> View<Msg> {
+    padded(
+        "● info: dos clientes online\n● warn: latencia 250 ms\n● ok: backup nocturno verde",
+        12.0,
+        theme.fg_text,
+        Alignment::Start,
+    )
+}
+
+fn uptime_body(theme: &Theme) -> View<Msg> {
+    padded("4d 12h 33m", 26.0, theme.accent, Alignment::Center)
+}
+
+fn queue_body(theme: &Theme) -> View<Msg> {
+    padded(
+        "pending: 7\nin-flight: 2\ndone (24h): 1842",
+        13.0,
+        theme.fg_text,
+        Alignment::Start,
+    )
+}
+
+fn main() {
+    llimphi_ui::run::<Showcase>();
+}
diff --git a/widgets/tiled/src/lib.rs b/widgets/tiled/src/lib.rs
new file mode 100644
index 0000000..4ab1422
--- /dev/null
+++ b/widgets/tiled/src/lib.rs
@@ -0,0 +1,322 @@
+//! `llimphi-widget-tiled` — grilla auto cols×rows de tiles con title
+//! bar fija arriba.
+//!
+//! Cada tile es un panel rectangular con:
+//! - una franja superior (20 px) con `bg_panel_alt` + label centrado a
+//!   la izquierda en `fg_muted`;
+//! - un cuerpo flex que aloja el `View<Msg>` provisto por el caller.
+//!
+//! La grilla se calcula como `cols = ⌈√n⌉`, `rows = ⌈n/cols⌉` — mismo
+//! algoritmo que el `nahual-widget-tiled` GPUI. Las celdas son
+//! equipesos: `flex_grow = 1` sobre ambos ejes.
+//!
+//! ## Variantes
+//!
+//! - [`tiled_view`] — grilla estática, sin reordenamiento.
+//! - [`tiled_view_reorderable`] — drag-to-swap: arrastrar la title bar
+//!   de un tile y soltar sobre otro emite `on_reorder(from, to)`. El
+//!   tile destino se ilumina (`drop_hover_fill` = `accent`) mientras
+//!   el cursor está sobre él durante el drag. Usa los primitives
+//!   `drag_payload` + `on_drop` + `drop_hover_fill` de `llimphi-ui`.
+//! - [`tiled_view_cols`] / [`tiled_view_reorderable_cols`] — fuerzan el
+//!   número de columnas (útil para sidebars verticales: `cols = 1`).
+
+#![forbid(unsafe_code)]
+
+use std::sync::Arc;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Dimension, FlexDirection, Size, Style},
+    Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{DragPhase, View};
+
+const TITLE_BAR_HEIGHT: f32 = 20.0;
+const TITLE_TEXT_SIZE: f32 = 10.0;
+const TILE_GAP: f32 = 4.0;
+const TILE_PADDING: f32 = 4.0;
+
+/// Paleta del tiled.
+#[derive(Debug, Clone, Copy)]
+pub struct TiledPalette {
+    /// Fondo del container outer (visible en los gaps entre tiles).
+    pub bg_outer: Color,
+    /// Fondo del cuerpo del tile.
+    pub bg_tile: Color,
+    /// Fondo de la title bar del tile.
+    pub bg_title: Color,
+    /// Color del label de la title bar.
+    pub fg_title: Color,
+    /// Color del tile destino durante un drag (drop hover).
+    pub bg_drop_hover: Color,
+}
+
+impl Default for TiledPalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl TiledPalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_outer: t.bg_app,
+            bg_tile: t.bg_panel,
+            bg_title: t.bg_panel_alt,
+            fg_title: t.fg_muted,
+            bg_drop_hover: t.bg_selected,
+        }
+    }
+}
+
+/// Un tile de la grilla: label que va en la title bar + view del cuerpo.
+pub struct TileSpec<Msg> {
+    pub label: String,
+    pub content: View<Msg>,
+}
+
+type ReorderFn<Msg> = Arc<dyn Fn(usize, usize) -> Option<Msg> + Send + Sync>;
+
+/// Construye una grilla estática (sin drag-to-swap). Equivalente a
+/// [`tiled_view_reorderable`] sin handler de reorder.
+pub fn tiled_view<Msg>(tiles: Vec<TileSpec<Msg>>, palette: &TiledPalette) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+{
+    build(tiles, palette, None, None)
+}
+
+/// Construye una grilla con drag-to-swap. Arrastrar la title bar de un
+/// tile y soltar sobre otro invoca `on_reorder(from_index, to_index)`;
+/// el `Msg` retornado se dispatchea al `update` antes de cerrar el
+/// drag. El caller es responsable de filtrar `from == to`.
+pub fn tiled_view_reorderable<Msg, F>(
+    tiles: Vec<TileSpec<Msg>>,
+    on_reorder: F,
+    palette: &TiledPalette,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+    F: Fn(usize, usize) -> Option<Msg> + Send + Sync + 'static,
+{
+    build(tiles, palette, Some(Arc::new(on_reorder)), None)
+}
+
+/// Como [`tiled_view`] pero con número fijo de columnas. Útil para
+/// sidebars verticales (`cols = 1`) o filas horizontales (`cols = n`)
+/// donde el algoritmo auto-sqrt no sirve. `cols.max(1)` se aplica por
+/// seguridad.
+pub fn tiled_view_cols<Msg>(
+    tiles: Vec<TileSpec<Msg>>,
+    cols: usize,
+    palette: &TiledPalette,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+{
+    build(tiles, palette, None, Some(cols))
+}
+
+/// Como [`tiled_view_reorderable`] pero con número fijo de columnas.
+pub fn tiled_view_reorderable_cols<Msg, F>(
+    tiles: Vec<TileSpec<Msg>>,
+    cols: usize,
+    on_reorder: F,
+    palette: &TiledPalette,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+    F: Fn(usize, usize) -> Option<Msg> + Send + Sync + 'static,
+{
+    build(tiles, palette, Some(Arc::new(on_reorder)), Some(cols))
+}
+
+fn build<Msg>(
+    tiles: Vec<TileSpec<Msg>>,
+    palette: &TiledPalette,
+    on_reorder: Option<ReorderFn<Msg>>,
+    cols_override: Option<usize>,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+{
+    let n = tiles.len();
+    if n == 0 {
+        return View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(palette.bg_outer)
+        .text(
+            "(tiled vacío)".to_string(),
+            11.0,
+            palette.fg_title,
+        );
+    }
+
+    let cols = cols_override
+        .map(|c| c.max(1))
+        .unwrap_or_else(|| ((n as f32).sqrt().ceil() as usize).max(1));
+    let rows = (n + cols - 1) / cols;
+
+    let mut tiles_iter = tiles.into_iter().enumerate();
+    let mut rows_views: Vec<View<Msg>> = Vec::with_capacity(rows);
+
+    for _r in 0..rows {
+        let mut cells: Vec<View<Msg>> = Vec::with_capacity(cols);
+        for _c in 0..cols {
+            let cell = match tiles_iter.next() {
+                Some((idx, tile)) => tile_view(idx, tile, palette, on_reorder.clone()),
+                None => empty_cell_view(palette),
+            };
+            cells.push(cell);
+        }
+        rows_views.push(row_view(cells));
+    }
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        gap: Size {
+            width: length(0.0_f32),
+            height: length(TILE_GAP),
+        },
+        padding: Rect {
+            left: length(TILE_PADDING),
+            right: length(TILE_PADDING),
+            top: length(TILE_PADDING),
+            bottom: length(TILE_PADDING),
+        },
+        ..Default::default()
+    })
+    .fill(palette.bg_outer)
+    .children(rows_views)
+}
+
+fn row_view<Msg>(cells: Vec<View<Msg>>) -> View<Msg> {
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: Dimension::auto(),
+        },
+        flex_grow: 1.0,
+        flex_basis: length(0.0_f32),
+        min_size: Size {
+            width: length(0.0_f32),
+            height: length(0.0_f32),
+        },
+        gap: Size {
+            width: length(TILE_GAP),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(cells)
+}
+
+fn tile_view<Msg>(
+    idx: usize,
+    tile: TileSpec<Msg>,
+    palette: &TiledPalette,
+    on_reorder: Option<ReorderFn<Msg>>,
+) -> View<Msg>
+where
+    Msg: Clone + Send + Sync + 'static,
+{
+    let mut title = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(TITLE_BAR_HEIGHT),
+        },
+        flex_shrink: 0.0,
+        padding: Rect {
+            left: length(8.0_f32),
+            right: length(8.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.bg_title)
+    .text_aligned(tile.label, TITLE_TEXT_SIZE, palette.fg_title, Alignment::Start);
+
+    // Si hay reorder, la title bar arrastra con payload = idx.
+    if on_reorder.is_some() {
+        // Handler trivial: tiled no usa dx/dy. Devuelve None.
+        title = title
+            .draggable(|_phase: DragPhase, _dx: f32, _dy: f32| None)
+            .drag_payload(idx as u64);
+    }
+
+    let body = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: Dimension::auto(),
+        },
+        flex_grow: 1.0,
+        min_size: Size {
+            width: length(0.0_f32),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![tile.content]);
+
+    let mut tile_view = View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: Dimension::auto(),
+            height: percent(1.0_f32),
+        },
+        flex_grow: 1.0,
+        flex_basis: length(0.0_f32),
+        min_size: Size {
+            width: length(0.0_f32),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.bg_tile)
+    .radius(4.0)
+    .clip(true)
+    .children(vec![title, body]);
+
+    // Drop target: si hay reorder, este tile entero recibe drops.
+    if let Some(reorder) = on_reorder {
+        let to_idx = idx;
+        tile_view = tile_view
+            .on_drop(move |from: u64| (reorder)(from as usize, to_idx))
+            .drop_hover_fill(palette.bg_drop_hover);
+    }
+
+    tile_view
+}
+
+fn empty_cell_view<Msg>(palette: &TiledPalette) -> View<Msg>
+where
+    Msg: Clone + 'static,
+{
+    View::new(Style {
+        size: Size {
+            width: Dimension::auto(),
+            height: percent(1.0_f32),
+        },
+        flex_grow: 1.0,
+        flex_basis: length(0.0_f32),
+        min_size: Size {
+            width: length(0.0_f32),
+            height: length(0.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.bg_outer)
+}
diff --git a/widgets/timeline/Cargo.toml b/widgets/timeline/Cargo.toml
new file mode 100644
index 0000000..5c930f3
--- /dev/null
+++ b/widgets/timeline/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-timeline"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-timeline — barra de progreso/scrub clickeable (seek absoluto). El widget es stateless: el caller pasa la fracción de avance y un handler fracción→Msg."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/timeline/src/lib.rs b/widgets/timeline/src/lib.rs
new file mode 100644
index 0000000..d6ebda8
--- /dev/null
+++ b/widgets/timeline/src/lib.rs
@@ -0,0 +1,154 @@
+//! `llimphi-widget-timeline` — barra de progreso/scrub clickeable.
+//!
+//! Pattern análogo a `llimphi-widget-slider`/`-progress`: el widget **no
+//! mantiene estado**. El caller guarda la posición actual en su `Model`,
+//! le pasa la **fracción de avance** (`0.0..=1.0` = posición/duración) y un
+//! handler `Fn(f32) -> Option<Msg>` que recibe la fracción **donde el
+//! usuario clickeó** (scrub absoluto, estilo VLC). El widget no sabe de
+//! tiempo ni de duración: sólo pinta el avance y reporta dónde se clickeó
+//! como fracción del ancho de la barra (`on_click_at`). Quien mapea esa
+//! fracción a un seek concreto es la app.
+//!
+//! ```text
+//!   [ ██████████▏░░░░░░░░░░░░ ]
+//!        recorrido  playhead   resto
+//! ```
+//!
+//! Uso típico (reproductor):
+//!
+//! ```ignore
+//! let frac = pos.as_secs_f64() / dur.as_secs_f64();
+//! timeline_view(frac as f32, &TimelinePalette::default(), |f| {
+//!     Some(Msg::Command(MediaCommand::SeekTo { fraction: f }))
+//! })
+//! ```
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::prelude::{length, percent, Size, Style};
+use llimphi_ui::llimphi_raster::kurbo::{Affine, Rect};
+use llimphi_ui::llimphi_raster::peniko::{Color, Fill};
+use llimphi_ui::View;
+
+/// Paleta + dimensiones del timeline. Las medidas viajan acá (igual que
+/// `SliderPalette`) porque definen cómo se ve la barra — el caller no
+/// toca el `Style` directamente.
+#[derive(Debug, Clone, Copy)]
+pub struct TimelinePalette {
+    /// Color de la pista de fondo (el track entero).
+    pub track: Color,
+    /// Color del tramo recorrido (de 0 al playhead).
+    pub fill: Color,
+    /// Color del playhead (la barrita vertical en la posición actual).
+    pub knob: Color,
+    /// Alto total del widget en pixels.
+    pub height: f32,
+    /// Radio de las esquinas del track.
+    pub radius: f64,
+}
+
+impl Default for TimelinePalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl TimelinePalette {
+    /// Construye la paleta desde un `Theme` semántico.
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            track: t.bg_button,
+            fill: t.accent,
+            knob: t.fg_text,
+            height: 14.0,
+            radius: 7.0,
+        }
+    }
+}
+
+/// Compone una barra de progreso clickeable.
+///
+/// `progress` es la fracción recorrida (`0.0..=1.0`); se clampea. El
+/// handler `on_seek` recibe la fracción `0.0..=1.0` donde el usuario
+/// clickeó (`local_x / ancho`) y devuelve el `Msg` a despachar (o `None`
+/// para ignorar el click). El widget es stateless: redibujá pasando un
+/// `progress` nuevo en cada frame y el playhead avanza solo.
+pub fn timeline_view<Msg, F>(progress: f32, palette: &TimelinePalette, on_seek: F) -> View<Msg>
+where
+    Msg: 'static,
+    F: Fn(f32) -> Option<Msg> + Send + Sync + 'static,
+{
+    let p = progress.clamp(0.0, 1.0);
+    let fill_color = palette.fill;
+    let knob_color = palette.knob;
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(palette.height),
+        },
+        ..Default::default()
+    })
+    .fill(palette.track)
+    .radius(palette.radius)
+    .paint_with(move |scene, _ts, rect| {
+        if rect.w <= 2.0 || rect.h <= 2.0 {
+            return;
+        }
+        let pad: f32 = 2.0;
+        let x0 = rect.x + pad;
+        let y0 = rect.y + pad;
+        let w = (rect.w - 2.0 * pad).max(1.0);
+        let h = (rect.h - 2.0 * pad).max(1.0);
+        // Tramo recorrido.
+        let fw = (w * p).max(0.0);
+        if fw > 0.5 {
+            let fill = Rect::new(x0 as f64, y0 as f64, (x0 + fw) as f64, (y0 + h) as f64);
+            scene.fill(Fill::NonZero, Affine::IDENTITY, fill_color, None, &fill);
+        }
+        // Playhead — fina barra vertical en la posición actual.
+        let kx = x0 + fw;
+        let kw: f32 = 3.0;
+        let knob = Rect::new(
+            (kx - kw * 0.5) as f64,
+            y0 as f64,
+            (kx + kw * 0.5) as f64,
+            (y0 + h) as f64,
+        );
+        scene.fill(Fill::NonZero, Affine::IDENTITY, knob_color, None, &knob);
+    })
+    .on_click_at(move |lx, _ly, w, _h| {
+        if w <= 0.0 {
+            return None;
+        }
+        on_seek((lx / w).clamp(0.0, 1.0))
+    })
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    // Msg de prueba: el handler reporta la fracción clickeada.
+    #[derive(Debug, PartialEq)]
+    struct Seek(f32);
+
+    #[test]
+    fn from_theme_usa_colores_semanticos() {
+        let t = llimphi_theme::Theme::dark();
+        let p = TimelinePalette::from_theme(&t);
+        assert_eq!(p.track, t.bg_button);
+        assert_eq!(p.fill, t.accent);
+        assert_eq!(p.knob, t.fg_text);
+    }
+
+    #[test]
+    fn construye_sin_panic_en_extremos() {
+        // El widget se arma para fracciones fuera de rango (se clampea
+        // internamente al pintar) sin reventar.
+        let pal = TimelinePalette::default();
+        let _ = timeline_view(-0.5, &pal, |f| Some(Seek(f)));
+        let _ = timeline_view(0.0, &pal, |f| Some(Seek(f)));
+        let _ = timeline_view(1.0, &pal, |f| Some(Seek(f)));
+        let _ = timeline_view(2.0, &pal, |f| Some(Seek(f)));
+    }
+}
diff --git a/widgets/toast/Cargo.toml b/widgets/toast/Cargo.toml
new file mode 100644
index 0000000..754ef7f
--- /dev/null
+++ b/widgets/toast/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "llimphi-widget-toast"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-toast — notificaciones efímeras apiladas bottom-right. Severidades info/success/warning/error. Auto-dismiss configurable. Render-only; el ciclo de vida lo maneja la app."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
+llimphi-icons = { workspace = true }
diff --git a/widgets/toast/src/lib.rs b/widgets/toast/src/lib.rs
new file mode 100644
index 0000000..52e6b76
--- /dev/null
+++ b/widgets/toast/src/lib.rs
@@ -0,0 +1,238 @@
+//! `llimphi-widget-toast` — notificaciones efímeras apiladas.
+//!
+//! Cuatro severidades (Info / Success / Warning / Error) con color
+//! semántico hardcoded — un Error debe leerse rojo aunque la app esté
+//! en tema "sunset". Cada toast lleva un icono de `llimphi-icons` y
+//! un texto corto.
+//!
+//! El widget es **render-only**: recibe una lista de [`Toast`]s ya
+//! filtrados por la app (los que aún no expiraron) y los apila en la
+//! esquina bottom-right. El ciclo de vida (push, auto-dismiss tras
+//! `duration`, dismiss manual al click) lo maneja la app desde su
+//! `update`/`spawn`.
+//!
+//! Patrón típico:
+//! 1. App tiene `Vec<Toast>` en el modelo + `next_id: u64`.
+//! 2. Para pushear: agregar Toast con `expires_at = Instant::now() + dur`
+//!    + `handle.spawn(move || { sleep(dur); Msg::ToastExpire(id) })`.
+//! 3. `view_overlay` filtra los no expirados y los pasa a `toast_stack_view`.
+
+#![forbid(unsafe_code)]
+
+use std::time::Instant;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, percent, FlexDirection, Position, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_icons::{icon_view, Icon};
+use llimphi_theme::radius;
+
+/// Severidad del toast — define color e icono.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum ToastKind {
+    Info,
+    Success,
+    Warning,
+    Error,
+}
+
+impl ToastKind {
+    /// Color de fondo (semántico, no dependiente del theme).
+    pub fn bg(self) -> Color {
+        match self {
+            ToastKind::Info => Color::from_rgba8(28, 56, 88, 245),
+            ToastKind::Success => Color::from_rgba8(28, 72, 44, 245),
+            ToastKind::Warning => Color::from_rgba8(88, 64, 20, 245),
+            ToastKind::Error => Color::from_rgba8(96, 32, 32, 245),
+        }
+    }
+
+    /// Color del trazo y del texto principal.
+    pub fn fg(self) -> Color {
+        match self {
+            ToastKind::Info => Color::from_rgba8(180, 220, 250, 255),
+            ToastKind::Success => Color::from_rgba8(180, 240, 200, 255),
+            ToastKind::Warning => Color::from_rgba8(250, 220, 160, 255),
+            ToastKind::Error => Color::from_rgba8(250, 200, 200, 255),
+        }
+    }
+
+    pub fn icon(self) -> Icon {
+        match self {
+            ToastKind::Info => Icon::Info,
+            ToastKind::Success => Icon::Check,
+            ToastKind::Warning => Icon::Warning,
+            ToastKind::Error => Icon::Error,
+        }
+    }
+}
+
+/// Un toast en cola. La app mantiene `Vec<Toast>` y descarta los
+/// expirados antes de pasarlos al render.
+#[derive(Debug, Clone)]
+pub struct Toast {
+    /// Id estable para que la app pueda correlacionar con su Msg de
+    /// dismiss (`Msg::ToastDismiss(u64)`).
+    pub id: u64,
+    pub kind: ToastKind,
+    pub text: String,
+    /// Cuándo expira. El render no chequea esto — sólo apila lo que
+    /// recibe; la app filtra antes.
+    pub expires_at: Instant,
+}
+
+const TOAST_W: f32 = 320.0;
+const TOAST_H: f32 = 44.0;
+const ICON_BOX: f32 = 24.0;
+const GAP: f32 = 8.0;
+const MARGIN: f32 = 16.0;
+/// Ancho del "rail" de severidad en el edge izquierdo. 3px es el sweet
+/// spot — visible al pasar sin chocar con el icono. Look Linear/Slack.
+const RAIL_W: f32 = 3.0;
+
+/// Apila los toasts en la esquina bottom-right del viewport. `on_click`
+/// se construye por toast vía `make_dismiss(id)`. Devuelve un `View`
+/// para colgar de `view_overlay`.
+pub fn toast_stack_view<Msg, F>(
+    toasts: &[Toast],
+    viewport: (f32, f32),
+    make_dismiss: F,
+) -> View<Msg>
+where
+    Msg: Clone + 'static,
+    F: Fn(u64) -> Msg,
+{
+    let n = toasts.len() as f32;
+    let stack_h = n * TOAST_H + (n - 1.0).max(0.0) * GAP;
+    let stack_y = (viewport.1 - stack_h - MARGIN).max(MARGIN);
+    let stack_x = (viewport.0 - TOAST_W - MARGIN).max(MARGIN);
+
+    let children: Vec<View<Msg>> = toasts
+        .iter()
+        .map(|t| single_toast_view(t, make_dismiss(t.id)))
+        .collect();
+
+    let stack = View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(stack_x),
+            top: length(stack_y),
+            right: auto(),
+            bottom: auto(),
+        },
+        size: Size {
+            width: length(TOAST_W),
+            height: length(stack_h.max(0.0)),
+        },
+        flex_direction: FlexDirection::Column,
+        gap: Size {
+            width: length(0.0_f32),
+            height: length(GAP),
+        },
+        ..Default::default()
+    })
+    .children(children);
+
+    View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .children(vec![stack])
+}
+
+fn single_toast_view<Msg: Clone + 'static>(toast: &Toast, on_dismiss: Msg) -> View<Msg> {
+    let bg = toast.kind.bg();
+    let fg = toast.kind.fg();
+    let icon = toast.kind.icon();
+
+    // Rail de severidad: stripe del color fg semántico (más brillante
+    // que el bg) en el edge izquierdo. Visible al pasar el ojo sin
+    // chocar con el icono — refuerza la severidad para usuarios que ya
+    // están mirando a otra parte de la UI.
+    let rail = View::new(Style {
+        size: Size {
+            width: length(RAIL_W),
+            height: percent(1.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(fg);
+
+    let icon_cell = View::new(Style {
+        size: Size {
+            width: length(ICON_BOX),
+            height: length(ICON_BOX),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .children(vec![icon_view(icon, fg, 1.6)]);
+
+    let text = View::new(Style {
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        flex_grow: 1.0,
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .text_aligned(toast.text.clone(), 12.0, fg, Alignment::Start);
+
+    View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(TOAST_H),
+        },
+        align_items: Some(AlignItems::Center),
+        // El rail vive en el edge — sin padding-left propio para que
+        // pegue al borde; el padding del contenido arranca después.
+        padding: Rect {
+            left: length(0.0_f32),
+            right: length(12.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        gap: Size {
+            width: length(10.0_f32),
+            height: length(0.0_f32),
+        },
+        flex_shrink: 0.0,
+        ..Default::default()
+    })
+    .fill(bg)
+    .radius(radius::MD)
+    .clip(true)
+    .on_click(on_dismiss)
+    .children(vec![rail, icon_cell, text])
+}
+
+/// Helper de construcción para uso inmediato:
+/// `Toast::info(1, "guardado", Duration::from_secs(3))`.
+impl Toast {
+    pub fn info(id: u64, text: impl Into<String>, dur: std::time::Duration) -> Self {
+        Self { id, kind: ToastKind::Info, text: text.into(), expires_at: Instant::now() + dur }
+    }
+    pub fn success(id: u64, text: impl Into<String>, dur: std::time::Duration) -> Self {
+        Self { id, kind: ToastKind::Success, text: text.into(), expires_at: Instant::now() + dur }
+    }
+    pub fn warning(id: u64, text: impl Into<String>, dur: std::time::Duration) -> Self {
+        Self { id, kind: ToastKind::Warning, text: text.into(), expires_at: Instant::now() + dur }
+    }
+    pub fn error(id: u64, text: impl Into<String>, dur: std::time::Duration) -> Self {
+        Self { id, kind: ToastKind::Error, text: text.into(), expires_at: Instant::now() + dur }
+    }
+
+    pub fn is_alive(&self, now: Instant) -> bool {
+        now < self.expires_at
+    }
+}
diff --git a/widgets/tooltip/Cargo.toml b/widgets/tooltip/Cargo.toml
new file mode 100644
index 0000000..362e079
--- /dev/null
+++ b/widgets/tooltip/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-tooltip"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-tooltip — tooltip flotante posicionado por anchor + viewport. Render-only: la app decide cuándo abrir (típico: hover-after-delay manejado en update)."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/tooltip/src/lib.rs b/widgets/tooltip/src/lib.rs
new file mode 100644
index 0000000..52d0cb6
--- /dev/null
+++ b/widgets/tooltip/src/lib.rs
@@ -0,0 +1,166 @@
+//! `llimphi-widget-tooltip` — tooltip flotante con anchor + clamping.
+//!
+//! Render puro: el widget recibe el anchor (típicamente bottom-center
+//! del elemento que lo dispara), el viewport y el texto, y devuelve un
+//! `View<Msg>` posicionado en absolute para colgarlo de `view_overlay`.
+//! La app es responsable de:
+//! 1. Detectar el hover sobre el elemento via `View::on_pointer_enter`
+//!    + un `Tween`/delay para evitar tooltips que parpadean al pasar.
+//! 2. Guardar el `Option<TooltipSpec>` en su modelo.
+//! 3. Devolverlo desde `view_overlay`.
+//! 4. Cerrarlo con `View::on_pointer_leave` sobre el mismo elemento.
+//!
+//! No se incluye scrim — el tooltip es informativo, no modal: los
+//! clicks atraviesan al árbol principal. (Para popovers con
+//! interacción, usar `llimphi-widget-modal` o el `context-menu`).
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{auto, length, FlexDirection, Position, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::View;
+use llimphi_theme::{radius, Theme};
+
+/// Paleta del tooltip — fondo "glass panel" oscuro, texto claro.
+#[derive(Debug, Clone, Copy)]
+pub struct TooltipPalette {
+    pub bg: Color,
+    pub fg: Color,
+    pub border: Color,
+}
+
+impl TooltipPalette {
+    pub fn from_theme(t: &Theme) -> Self {
+        Self {
+            bg: t.bg_app,
+            fg: t.fg_text,
+            border: t.border,
+        }
+    }
+}
+
+/// Lado preferido al que se coloca el tooltip respecto del anchor.
+/// Si no entra en el viewport por ese lado, el clamping lo empuja al
+/// lado contrario (no recortado).
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+pub enum Side {
+    Top,
+    #[default]
+    Bottom,
+    Left,
+    Right,
+}
+
+/// Spec para [`tooltip_view`].
+#[derive(Debug, Clone)]
+pub struct TooltipSpec {
+    /// Punto de origen — típicamente el centro del elemento que dispara.
+    pub anchor: (f32, f32),
+    /// Tamaño actual de la ventana, para clamping.
+    pub viewport: (f32, f32),
+    /// Lado preferido respecto del anchor.
+    pub side: Side,
+    pub text: String,
+    pub palette: TooltipPalette,
+}
+
+const PAD_X: f32 = 8.0;
+const PAD_Y: f32 = 5.0;
+const GAP: f32 = 6.0;
+const FONT_SIZE: f32 = 11.5;
+/// Ancho aproximado de un carácter (estimación zonal — Llimphi
+/// todavía no expone medición previa al layout). Sirve para clampear
+/// tooltips largos a un ancho razonable.
+const CHAR_W_APPROX: f32 = 6.5;
+const MAX_W: f32 = 280.0;
+
+pub fn tooltip_view<Msg: Clone + 'static>(spec: TooltipSpec) -> View<Msg> {
+    let TooltipSpec { anchor, viewport, side, text, palette } = spec;
+
+    // Tamaño estimado del tooltip — Llimphi resuelve layout pero el
+    // posicionamiento absolute necesita un x,y; estimamos con el ancho
+    // del texto y limitamos al MAX_W. Ancho real puede diferir un
+    // píxel — al ojo es invisible.
+    let est_w = (text.chars().count() as f32 * CHAR_W_APPROX + PAD_X * 2.0).min(MAX_W);
+    let est_h = FONT_SIZE * 1.3 + PAD_Y * 2.0;
+
+    // Posicionamiento respecto del anchor.
+    let (raw_x, raw_y) = match side {
+        Side::Bottom => (anchor.0 - est_w * 0.5, anchor.1 + GAP),
+        Side::Top => (anchor.0 - est_w * 0.5, anchor.1 - GAP - est_h),
+        Side::Right => (anchor.0 + GAP, anchor.1 - est_h * 0.5),
+        Side::Left => (anchor.0 - GAP - est_w, anchor.1 - est_h * 0.5),
+    };
+
+    // Clamping al viewport (margen 4px para no pegarse al borde).
+    let margin = 4.0;
+    let x = raw_x
+        .min((viewport.0 - est_w - margin).max(margin))
+        .max(margin);
+    let y = raw_y
+        .min((viewport.1 - est_h - margin).max(margin))
+        .max(margin);
+
+    let panel = View::new(Style {
+        position: Position::Absolute,
+        inset: Rect {
+            left: length(x),
+            top: length(y),
+            right: auto(),
+            bottom: auto(),
+        },
+        size: Size {
+            width: length(est_w),
+            height: length(est_h),
+        },
+        flex_direction: FlexDirection::Column,
+        align_items: Some(AlignItems::FlexStart),
+        padding: Rect {
+            left: length(PAD_X),
+            right: length(PAD_X),
+            top: length(PAD_Y),
+            bottom: length(PAD_Y),
+        },
+        ..Default::default()
+    })
+    .fill(palette.bg)
+    .radius(radius::SM)
+    .text_aligned(text, FONT_SIZE, palette.fg, Alignment::Start);
+
+    // Wrapper invisible que ocupa toda la pantalla — el panel ya está
+    // posicionado en absolute, pero `view_overlay` espera un único root
+    // que cubre la ventana. Sin scrim ni intercept de clicks.
+    View::new(Style {
+        size: Size {
+            width: llimphi_ui::llimphi_layout::taffy::prelude::percent(1.0_f32),
+            height: llimphi_ui::llimphi_layout::taffy::prelude::percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    // Borde sutil pintado vía un nodo separado: pintamos el panel sobre
+    // un rect 1px más grande coloreado con `border` — barato y consistente
+    // con cómo el context-menu hace su borde.
+    .children(vec![
+        View::new(Style {
+            position: Position::Absolute,
+            inset: Rect {
+                left: length(x - 1.0),
+                top: length(y - 1.0),
+                right: auto(),
+                bottom: auto(),
+            },
+            size: Size {
+                width: length(est_w + 2.0),
+                height: length(est_h + 2.0),
+            },
+            ..Default::default()
+        })
+        .fill(palette.border)
+        .radius(radius::SM + 1.0),
+        panel,
+    ])
+}
diff --git a/widgets/tree/Cargo.toml b/widgets/tree/Cargo.toml
new file mode 100644
index 0000000..8c44804
--- /dev/null
+++ b/widgets/tree/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-tree"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-tree — árbol con expand/collapse y selección. Análogo Llimphi al `nahual-widget-tree` GPUI. El caller mantiene el set de nodos expandidos y el seleccionado en su Model; el widget aplana el árbol en filas con indentación y emite Msg al togglear o seleccionar."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/tree/LEEME.md b/widgets/tree/LEEME.md
new file mode 100644
index 0000000..16a6346
--- /dev/null
+++ b/widgets/tree/LEEME.md
@@ -0,0 +1,5 @@
+# llimphi-widget-tree
+
+> Árbol jerárquico para [llimphi](../../README.md).
+
+Tree-view con expand/collapse, virtualización (filas no visibles no se montan), drag-and-drop opcional. Lazy-load por nodo cuando los hijos son caros. Usado por file-explorer, sidebar de docs, etc.
diff --git a/widgets/tree/README.md b/widgets/tree/README.md
new file mode 100644
index 0000000..b510b5c
--- /dev/null
+++ b/widgets/tree/README.md
@@ -0,0 +1,5 @@
+# llimphi-widget-tree
+
+> Hierarchical tree for [llimphi](../../README.md).
+
+Tree-view with expand/collapse, virtualization (off-screen rows aren't mounted), optional drag-and-drop. Lazy-load per node when children are expensive. Used by file-explorer, doc sidebar, etc.
diff --git a/widgets/tree/examples/tree_demo.rs b/widgets/tree/examples/tree_demo.rs
new file mode 100644
index 0000000..4a7ad7d
--- /dev/null
+++ b/widgets/tree/examples/tree_demo.rs
@@ -0,0 +1,207 @@
+//! Showcase de `llimphi-widget-tree`: jerarquía con expand/collapse +
+//! selección. Click en ▸/▾ togglea; click en el resto de la fila
+//! selecciona.
+//!
+//! Corré con: `cargo run -p llimphi-widget-tree --example tree_demo --release`.
+
+use std::collections::HashSet;
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, Rect,
+};
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{App, Handle, View};
+use llimphi_theme::Theme;
+use llimphi_widget_tree::{tree_view, TreePalette, TreeRow, TreeSpec};
+
+#[derive(Clone)]
+enum Msg {
+    Toggle(u32),
+    Select(u32),
+}
+
+struct Model {
+    /// Set de ids expandidos.
+    expanded: HashSet<u32>,
+    selected: Option<u32>,
+}
+
+struct Showcase;
+
+/// Estructura estática del árbol — `(id, parent_id, label)`. `parent_id =
+/// 0` significa raíz.
+const TREE: &[(u32, u32, &str)] = &[
+    (1, 0, "00_unanchay (PERCIBIR)"),
+    (10, 1, "pluma"),
+    (101, 10, "core"),
+    (102, 10, "graph"),
+    (103, 10, "render-plan"),
+    (104, 10, "editor-llimphi"),
+    (11, 1, "khipu"),
+    (12, 1, "rimay"),
+    (13, 1, "puriy"),
+    (131, 13, "core"),
+    (132, 13, "engine"),
+    (2, 0, "01_yachay (CONOCER)"),
+    (20, 2, "cosmos"),
+    (21, 2, "dominium"),
+    (22, 2, "nakui"),
+    (3, 0, "02_ruway (HACER)"),
+    (30, 3, "llimphi"),
+    (301, 30, "hal"),
+    (302, 30, "raster"),
+    (303, 30, "layout"),
+    (304, 30, "text"),
+    (305, 30, "ui"),
+    (306, 30, "widgets/"),
+    (3061, 306, "button"),
+    (3062, 306, "list"),
+    (3063, 306, "splitter"),
+    (3064, 306, "tabs"),
+    (3065, 306, "text-input"),
+    (3066, 306, "tree"),
+    (31, 3, "mirada"),
+    (32, 3, "nahual"),
+    (4, 0, "03_ukupacha (RAÍZ)"),
+];
+
+impl App for Showcase {
+    type Model = Model;
+    type Msg = Msg;
+
+    fn title() -> &'static str {
+        "llimphi · tree showcase"
+    }
+
+    fn initial_size() -> (u32, u32) {
+        (560, 720)
+    }
+
+    fn init(_: &Handle<Msg>) -> Model {
+        let mut expanded = HashSet::new();
+        // Raíces abiertas por default.
+        expanded.insert(1);
+        expanded.insert(3);
+        expanded.insert(30);
+        Model {
+            expanded,
+            selected: None,
+        }
+    }
+
+    fn update(model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
+        let mut m = model;
+        match msg {
+            Msg::Toggle(id) => {
+                if !m.expanded.remove(&id) {
+                    m.expanded.insert(id);
+                }
+            }
+            Msg::Select(id) => {
+                m.selected = Some(id);
+            }
+        }
+        m
+    }
+
+    fn view(model: &Model) -> View<Msg> {
+        let theme = Theme::dark();
+        let palette = TreePalette::from_theme(&theme);
+
+        let rows = flatten_visible(&model.expanded, model.selected);
+        let tree = tree_view(TreeSpec {
+            rows,
+            row_height: 22.0,
+            indent_px: 16.0,
+            palette,
+            guides: true,
+        });
+
+        // Header con info de la selección.
+        let header_text = match model.selected {
+            Some(id) => format!("seleccionado: id {id}"),
+            None => "(click en una fila para seleccionar)".to_string(),
+        };
+        let header = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(28.0_f32),
+            },
+            padding: Rect {
+                left: length(12.0_f32),
+                right: length(12.0_f32),
+                top: length(0.0_f32),
+                bottom: length(0.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            ..Default::default()
+        })
+        .fill(theme.bg_panel_alt)
+        .text_aligned(header_text, 12.0, theme.fg_muted, Alignment::Start);
+
+        let tree_pane = View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            flex_grow: 1.0,
+            ..Default::default()
+        })
+        .children(vec![tree]);
+
+        View::new(Style {
+            flex_direction: FlexDirection::Column,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            ..Default::default()
+        })
+        .fill(theme.bg_app)
+        .children(vec![header, tree_pane])
+    }
+}
+
+/// Aplana el árbol estático respetando el set expandido. Profundidad
+/// inferida de la cadena de parents.
+fn flatten_visible(expanded: &HashSet<u32>, selected: Option<u32>) -> Vec<TreeRow<Msg>> {
+    let mut out = Vec::new();
+    visit(0, 0, expanded, selected, &mut out);
+    out
+}
+
+fn visit(
+    parent_id: u32,
+    depth: usize,
+    expanded: &HashSet<u32>,
+    selected: Option<u32>,
+    out: &mut Vec<TreeRow<Msg>>,
+) {
+    for (id, p, label) in TREE {
+        if *p != parent_id {
+            continue;
+        }
+        let has_children = TREE.iter().any(|(_, pp, _)| *pp == *id);
+        let is_expanded = expanded.contains(id);
+        out.push(TreeRow {
+            label: label.to_string(),
+            depth,
+            has_children,
+            expanded: is_expanded,
+            selected: selected == Some(*id),
+            on_toggle: Msg::Toggle(*id),
+            on_select: Msg::Select(*id),
+            icon: None,
+            on_context: None,
+            editor: None,
+        });
+        if has_children && is_expanded {
+            visit(*id, depth + 1, expanded, selected, out);
+        }
+    }
+}
+
+fn main() {
+    llimphi_ui::run::<Showcase>();
+}
diff --git a/widgets/tree/src/lib.rs b/widgets/tree/src/lib.rs
new file mode 100644
index 0000000..dfa6a14
--- /dev/null
+++ b/widgets/tree/src/lib.rs
@@ -0,0 +1,345 @@
+//! `llimphi-widget-tree` — árbol con expand/collapse y selección.
+//!
+//! Análogo Llimphi al `nahual-widget-tree` GPUI. No mantiene estado
+//! propio: el `Model` del App lleva el set de nodos expandidos + el
+//! seleccionado, le pasa al widget la lista aplanada de filas (sólo
+//! las visibles según el estado de expansión) y maneja los Msg de
+//! toggle/select.
+//!
+//! Aplanar el árbol vive del lado del caller para no imponer una
+//! representación específica (recursiva, plana con paths, etc.).
+//!
+//! Cada fila lleva su `depth` (para indentar), `has_children` (para
+//! decidir si dibujar la flecha ▸/▾) y `expanded` (cuál de las dos).
+//! Click en la flecha → `on_toggle`; click en el resto de la fila →
+//! `on_select`; click derecho → `on_context` (si lo trae).
+//!
+//! Extras opcionales: un **icono gráfico** por fila (`icon`, cualquier
+//! `View` — típicamente un mini-canvas vectorial) entre el chevron y el
+//! label, y **líneas guía** de indentación (`TreeSpec::guides`).
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, Dimension, FlexDirection, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::kurbo::{Affine, Line as KurboLine, Stroke};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::llimphi_text::Alignment;
+use llimphi_ui::{PaintRect, View};
+
+/// Paleta del árbol — un subset del `Theme` semántico, igual que los
+/// otros widgets de Llimphi.
+#[derive(Debug, Clone, Copy)]
+pub struct TreePalette {
+    pub bg_panel: Color,
+    pub bg_selected: Color,
+    pub bg_hover: Color,
+    pub fg_text: Color,
+    pub fg_muted: Color,
+    pub fg_chevron: Color,
+    /// Color de las líneas guía de indentación.
+    pub guide: Color,
+}
+
+impl Default for TreePalette {
+    fn default() -> Self {
+        Self::from_theme(&llimphi_theme::Theme::dark())
+    }
+}
+
+impl TreePalette {
+    pub fn from_theme(t: &llimphi_theme::Theme) -> Self {
+        Self {
+            bg_panel: t.bg_panel,
+            bg_selected: t.bg_selected,
+            bg_hover: t.bg_row_hover,
+            fg_text: t.fg_text,
+            fg_muted: t.fg_muted,
+            fg_chevron: t.fg_muted,
+            guide: t.border,
+        }
+    }
+}
+
+/// Una fila del árbol — ya posicionada en la lista plana visible.
+pub struct TreeRow<Msg> {
+    pub label: String,
+    /// Nivel de anidación (0 = raíz). Se traduce a indentación visual.
+    pub depth: usize,
+    /// Si el nodo tiene hijos. `false` = hoja; no se dibuja el chevron.
+    pub has_children: bool,
+    /// Estado actual del nodo. Ignorado si `has_children = false`.
+    pub expanded: bool,
+    /// Si esta fila es la seleccionada.
+    pub selected: bool,
+    /// Msg al hacer click en el chevron. Sólo se usa si `has_children`.
+    pub on_toggle: Msg,
+    /// Msg al hacer click en la fila (label o área alrededor).
+    pub on_select: Msg,
+    /// Icono gráfico opcional (cualquier `View`, p.ej. un mini-canvas
+    /// vectorial) que se pinta entre el chevron y el label.
+    pub icon: Option<View<Msg>>,
+    /// Msg al hacer click derecho sobre la fila (menú contextual). `None`
+    /// = sin menú contextual.
+    pub on_context: Option<Msg>,
+    /// Edición in-situ: si es `Some`, la fila se renderea con este
+    /// `View` (típicamente un `text_input_view`) en el lugar del label,
+    /// en vez del texto sólo-lectura. El chevron y la indentación se
+    /// mantienen; el editor ocupa el slot elástico del label y no se le
+    /// cablea `on_select` (las teclas las rutea el App). `None` = fila
+    /// normal de sólo-lectura.
+    pub editor: Option<View<Msg>>,
+}
+
+impl<Msg> TreeRow<Msg> {
+    /// Constructor mínimo (sin icono / contexto / editor) — azúcar para
+    /// callers que sólo quieren label + toggle + select.
+    pub fn new(
+        label: impl Into<String>,
+        depth: usize,
+        has_children: bool,
+        expanded: bool,
+        selected: bool,
+        on_toggle: Msg,
+        on_select: Msg,
+    ) -> Self {
+        Self {
+            label: label.into(),
+            depth,
+            has_children,
+            expanded,
+            selected,
+            on_toggle,
+            on_select,
+            icon: None,
+            on_context: None,
+            editor: None,
+        }
+    }
+
+    pub fn with_icon(mut self, icon: View<Msg>) -> Self {
+        self.icon = Some(icon);
+        self
+    }
+
+    pub fn with_context(mut self, msg: Msg) -> Self {
+        self.on_context = Some(msg);
+        self
+    }
+
+    pub fn with_editor(mut self, editor: View<Msg>) -> Self {
+        self.editor = Some(editor);
+        self
+    }
+}
+
+/// Especificación completa del árbol a renderear.
+pub struct TreeSpec<Msg> {
+    pub rows: Vec<TreeRow<Msg>>,
+    pub row_height: f32,
+    pub indent_px: f32,
+    pub palette: TreePalette,
+    /// Dibujar líneas guía verticales de indentación.
+    pub guides: bool,
+}
+
+impl<Msg> TreeSpec<Msg> {
+    /// Spec con valores por defecto sensatos (row 22, indent 14, sin
+    /// guías) — sólo hay que pasar filas y paleta.
+    pub fn new(rows: Vec<TreeRow<Msg>>, palette: TreePalette) -> Self {
+        Self {
+            rows,
+            row_height: 22.0,
+            indent_px: 14.0,
+            palette,
+            guides: false,
+        }
+    }
+}
+
+/// Compone el árbol como `View<Msg>`. El contenedor activa `clip` para
+/// que filas que excedan el rect se recorten — usar dentro de un panel
+/// del tamaño deseado.
+pub fn tree_view<Msg: Clone + 'static>(spec: TreeSpec<Msg>) -> View<Msg> {
+    let TreeSpec {
+        rows,
+        row_height,
+        indent_px,
+        palette,
+        guides,
+    } = spec;
+
+    let children: Vec<View<Msg>> = rows
+        .into_iter()
+        .map(|row| tree_row_view(row, row_height, indent_px, guides, &palette))
+        .collect();
+
+    View::new(Style {
+        flex_direction: FlexDirection::Column,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        padding: Rect {
+            left: length(0.0_f32),
+            right: length(0.0_f32),
+            top: length(4.0_f32),
+            bottom: length(4.0_f32),
+        },
+        ..Default::default()
+    })
+    .fill(palette.bg_panel)
+    .clip(true)
+    .children(children)
+}
+
+fn tree_row_view<Msg: Clone + 'static>(
+    row: TreeRow<Msg>,
+    height: f32,
+    indent_px: f32,
+    guides: bool,
+    palette: &TreePalette,
+) -> View<Msg> {
+    let bg = if row.selected {
+        palette.bg_selected
+    } else {
+        palette.bg_panel
+    };
+    let indent = (row.depth as f32) * indent_px;
+
+    // Chevron a la izquierda — 16px de ancho, ▸ si colapsado, ▾ si
+    // expandido. Si es hoja, espacio en blanco del mismo ancho para que
+    // los labels alineen. ASCII puro (`v`/`>`) por compat de fuentes.
+    let chevron_label = if row.has_children {
+        if row.expanded {
+            "v"
+        } else {
+            ">"
+        }
+    } else {
+        " "
+    };
+    let chevron_msg = if row.has_children {
+        Some(row.on_toggle)
+    } else {
+        None
+    };
+    let mut chevron = View::new(Style {
+        size: Size {
+            width: length(16.0_f32),
+            height: length(height),
+        },
+        align_items: Some(AlignItems::Center),
+        justify_content: Some(JustifyContent::Center),
+        ..Default::default()
+    })
+    .text_aligned(
+        chevron_label.to_string(),
+        12.0,
+        palette.fg_chevron,
+        Alignment::Center,
+    );
+    if let Some(msg) = chevron_msg {
+        chevron = chevron.hover_fill(palette.bg_hover).on_click(msg);
+    }
+
+    let mut row_children: Vec<View<Msg>> = vec![chevron];
+
+    // Icono gráfico opcional, entre chevron y label.
+    if let Some(icon) = row.icon {
+        row_children.push(
+            View::new(Style {
+                size: Size {
+                    width: length(20.0_f32),
+                    height: length(height),
+                },
+                flex_shrink: 0.0,
+                align_items: Some(AlignItems::Center),
+                justify_content: Some(JustifyContent::Center),
+                ..Default::default()
+            })
+            .children(vec![icon]),
+        );
+    }
+
+    // Slot elástico del label: editor in-situ si la fila lo trae, o el
+    // texto sólo-lectura clickeable en su defecto. Alto `auto` para que el
+    // `align_items: Center` de la fila lo centre verticalmente.
+    let label = if let Some(editor) = row.editor {
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: length(height),
+            },
+            flex_grow: 1.0,
+            padding: Rect {
+                left: length(4.0_f32),
+                right: length(8.0_f32),
+                top: length(0.0_f32),
+                bottom: length(0.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            ..Default::default()
+        })
+        .children(vec![editor])
+    } else {
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: Dimension::auto(),
+            },
+            flex_grow: 1.0,
+            padding: Rect {
+                left: length(4.0_f32),
+                right: length(8.0_f32),
+                top: length(0.0_f32),
+                bottom: length(0.0_f32),
+            },
+            ..Default::default()
+        })
+        .text_aligned(row.label, 12.0, palette.fg_text, Alignment::Start)
+        .on_click(row.on_select)
+    };
+    row_children.push(label);
+
+    let mut v = View::new(Style {
+        flex_direction: FlexDirection::Row,
+        size: Size {
+            width: percent(1.0_f32),
+            height: length(height),
+        },
+        padding: Rect {
+            left: length(8.0_f32 + indent),
+            right: length(0.0_f32),
+            top: length(0.0_f32),
+            bottom: length(0.0_f32),
+        },
+        align_items: Some(AlignItems::Center),
+        ..Default::default()
+    })
+    .fill(bg)
+    .hover_fill(palette.bg_hover)
+    .children(row_children);
+
+    // Líneas guía de indentación, pintadas por debajo de los hijos.
+    if guides && row.depth > 0 {
+        let guide = palette.guide;
+        let depth = row.depth;
+        v = v.paint_with(move |scene, _ts, rect: PaintRect| {
+            let stroke = Stroke::new(1.0);
+            for k in 0..depth {
+                let x = (rect.x + 8.0 + k as f32 * indent_px + 7.0) as f64;
+                let line = KurboLine::new((x, rect.y as f64), (x, (rect.y + rect.h) as f64));
+                scene.stroke(&stroke, Affine::IDENTITY, guide, None, &line);
+            }
+        });
+    }
+
+    if let Some(ctx) = row.on_context {
+        v = v.on_right_click(ctx);
+    }
+
+    v
+}
diff --git a/widgets/wawa-mark/Cargo.toml b/widgets/wawa-mark/Cargo.toml
new file mode 100644
index 0000000..974fe10
--- /dev/null
+++ b/widgets/wawa-mark/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "llimphi-widget-wawa-mark"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "llimphi-widget-wawa-mark — sello vectorial de wawa: rombo con degradado azul índigo → púrpura profundo + 'W' implícita en trazo blanco continuo + Merkle Core luminoso en la sutura. Sin tipografía, todo geometría."
+
+[dependencies]
+llimphi-ui = { workspace = true }
+llimphi-theme = { workspace = true }
diff --git a/widgets/wawa-mark/examples/wawa_mark_demo.rs b/widgets/wawa-mark/examples/wawa_mark_demo.rs
new file mode 100644
index 0000000..c048e84
--- /dev/null
+++ b/widgets/wawa-mark/examples/wawa_mark_demo.rs
@@ -0,0 +1,85 @@
+//! Demo del sello wawa. Tres tamaños sobre fondo oscuro neutro.
+//!
+//! `cargo run -p llimphi-widget-wawa-mark --example wawa_mark_demo --release`
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{length, percent, FlexDirection, Size, Style},
+    AlignItems, JustifyContent, Rect,
+};
+use llimphi_ui::llimphi_raster::peniko::Color;
+use llimphi_ui::{App, Handle, View};
+use llimphi_widget_wawa_mark::{wawa_mark_view, WawaMarkPalette};
+
+struct Demo;
+
+impl App for Demo {
+    type Model = ();
+    type Msg = ();
+
+    fn title() -> &'static str {
+        "wawa · sello"
+    }
+
+    fn initial_size() -> (u32, u32) {
+        (820, 420)
+    }
+
+    fn init(_: &Handle<Self::Msg>) {}
+    fn update(model: Self::Model, _: Self::Msg, _: &Handle<Self::Msg>) -> Self::Model {
+        model
+    }
+
+    fn view(_: &Self::Model) -> View<Self::Msg> {
+        let palette = WawaMarkPalette::default();
+
+        let frame = |side: f32| -> View<()> {
+            View::new(Style {
+                size: Size {
+                    width: length(side),
+                    height: length(side),
+                },
+                align_items: Some(AlignItems::Center),
+                justify_content: Some(JustifyContent::Center),
+                ..Default::default()
+            })
+            .children(vec![wawa_mark_view(&palette)])
+        };
+
+        let row = View::new(Style {
+            flex_direction: FlexDirection::Row,
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            align_items: Some(AlignItems::Center),
+            justify_content: Some(JustifyContent::SpaceEvenly),
+            gap: Size {
+                width: length(24.0_f32),
+                height: length(0.0_f32),
+            },
+            ..Default::default()
+        })
+        .children(vec![frame(72.0), frame(160.0), frame(288.0)]);
+
+        View::new(Style {
+            size: Size {
+                width: percent(1.0_f32),
+                height: percent(1.0_f32),
+            },
+            padding: Rect {
+                left: length(32.0_f32),
+                right: length(32.0_f32),
+                top: length(32.0_f32),
+                bottom: length(32.0_f32),
+            },
+            ..Default::default()
+        })
+        // Fondo grafito neutro para que el rombo destaque sin competir.
+        .fill(Color::from_rgba8(18, 18, 22, 255))
+        .children(vec![row])
+    }
+}
+
+fn main() {
+    llimphi_ui::run::<Demo>();
+}
diff --git a/widgets/wawa-mark/src/lib.rs b/widgets/wawa-mark/src/lib.rs
new file mode 100644
index 0000000..1618ba2
--- /dev/null
+++ b/widgets/wawa-mark/src/lib.rs
@@ -0,0 +1,306 @@
+//! `llimphi-widget-wawa-mark` — sello vectorial del SO wawa.
+//!
+//! ## Spec (revisión 2026-05-29)
+//!
+//! Identidad nominal **implícita**: el rombo de fondo lleva la paleta
+//! oficial (Azul Índigo / Púrpura Profundo) y los trazos blancos forman
+//! las letras **"WA"** pero geométricamente — no son tipografía, son
+//! aristas internas que rebotan en los mismos 45° del rombo, así dan
+//! sensación de facetas talladas dentro del diamante.
+//!
+//! ### Composición
+//!
+//! 1. **Rombo de fondo** — degradado vertical inmaculado, sin sutura
+//!    visible: índigo arriba, púrpura abajo. El degradado lineal cubre
+//!    toda la altura del rombo (no sólo la mitad), de modo que el cambio
+//!    de tono es continuo.
+//! 2. **Trazo "WA"** — un único `BezPath` con dos subtrazos:
+//!    - **W** (izquierda): zigzag de 4 segmentos, todos a 45° (matching
+//!      las aristas del rombo). Picos en la sutura azul/púrpura
+//!      (y = 0.50), valles en y = 0.60. Cinco vértices, cuatro segmentos.
+//!    - **A** (derecha): triángulo abierto formado por dos legs a 45°
+//!      + un crossbar horizontal a mitad de altura. Tres segmentos.
+//!    Las strokes diagonales (6 de las 7) son paralelas a las aristas
+//!    del rombo, por eso "leen" como filos cortados del diamante en vez
+//!    de letras pintadas encima.
+//! 3. **Merkle Core** — punto luminoso con halo en el pico central de
+//!    la W (sobre la sutura, donde azul y púrpura se encuentran). Es el
+//!    nodo raíz que amarra el sistema.
+//!
+//! ### Geometría (en coords normalizadas `[0, 1] × [0, 1]` del rect)
+//!
+//! ```text
+//!                            Top
+//!                             ◇
+//!                            / \
+//!                           /   \              ← azul índigo
+//!                          /     \
+//!                P0    P2★    P4 A1
+//!                  ●─.   ●  .─●  ●─.  .─●     ← y = 0.50 (sutura)
+//!                     ╲ ╱ ╲ ╱     ╲      ╱
+//!                      ╳   ╳       ╲────╱     ← crossbar A (y=0.55)
+//!                     ╱ ╲ ╱ ╲     ╱      ╲
+//!                  ●─'   ●  '─●  ●─'    '─●  ← y = 0.60 (valles/pies)
+//!                P1    P3    A0    A2
+//!                          ↑
+//!                          gap entre W y A
+//!     Left  ◇─────────────────────────────────◇  Right
+//!                          (sutura, y = 0.50)
+//!                          /
+//!                         /
+//!                        /                     ← púrpura profundo
+//!                       /
+//!                      ◇
+//!                    Bottom
+//! ```
+//!
+//! Las strokes diagonales todas a slope ±1, igual que las aristas del
+//! rombo. El crossbar de la A es la única horizontal — concesión mínima
+//! a la legibilidad de la letra, queda subordinado al patrón diamante.
+//!
+//! ## Uso
+//!
+//! ```ignore
+//! use llimphi_widget_wawa_mark::{wawa_mark_view, WawaMarkPalette};
+//!
+//! // En un view:
+//! View::new(Style { size: Size { width: length(128.0), height: length(128.0) }, ..Default::default() })
+//!     .children(vec![wawa_mark_view(&WawaMarkPalette::default())])
+//! ```
+//!
+//! El widget rellena el rect del padre — pasarle un tamaño cuadrado para
+//! que el rombo no se distorsione (lo respeta igual, pero queda mejor
+//! cuadrado).
+
+#![forbid(unsafe_code)]
+
+use llimphi_ui::llimphi_layout::taffy::{
+    prelude::{percent, Size, Style},
+    Position,
+};
+use llimphi_ui::llimphi_raster::kurbo::{Affine, BezPath, Circle, Point, Stroke};
+use llimphi_ui::llimphi_raster::peniko::{color::AlphaColor, Color, Fill, Gradient, Mix};
+use llimphi_ui::View;
+
+/// Paleta del sello. Los defaults corresponden a la especificación
+/// oficial (Azul Índigo + Púrpura Profundo + trazo blanco + acento
+/// cyan-eléctrico para el Merkle Core).
+#[derive(Debug, Clone, Copy)]
+pub struct WawaMarkPalette {
+    /// Color superior del degradado (tope del rombo).
+    pub indigo: Color,
+    /// Color inferior del degradado (base del rombo).
+    pub purple: Color,
+    /// Color del trazo de la 'W' implícita.
+    pub stroke: Color,
+    /// Color del Merkle Core (nodo central). Halo se deriva con alpha
+    /// reducido del mismo color.
+    pub core: Color,
+}
+
+impl Default for WawaMarkPalette {
+    fn default() -> Self {
+        Self {
+            // Azul Índigo profundo — saturación alta, valor medio.
+            indigo: Color::from_rgba8(46, 56, 168, 255),
+            // Púrpura Profundo — más violeta, valor menor.
+            purple: Color::from_rgba8(76, 32, 122, 255),
+            // Blanco con leve calidez para no quemar contra el púrpura.
+            stroke: Color::from_rgba8(240, 240, 248, 255),
+            // Cyan eléctrico — el "color del cursor del osciloscopio".
+            core: Color::from_rgba8(120, 240, 255, 255),
+        }
+    }
+}
+
+/// Construye el `View` que pinta el sello dentro del rect del padre.
+/// El widget se posiciona absolute al 100% del padre — pasarle un
+/// contenedor con tamaño cuadrado para evitar distorsión.
+pub fn wawa_mark_view<Msg: Clone + 'static>(palette: &WawaMarkPalette) -> View<Msg> {
+    let p = *palette;
+    View::new(Style {
+        position: Position::Absolute,
+        size: Size {
+            width: percent(1.0_f32),
+            height: percent(1.0_f32),
+        },
+        ..Default::default()
+    })
+    .paint_with(move |scene, _ts, rect| paint_mark(scene, rect, &p))
+}
+
+/// Pintor puro — recibe el `Scene`, el rect de pintura y la paleta.
+/// Expuesto por separado para que apps avanzadas puedan reusar el
+/// painter dentro de canvas custom (splash de boot, about box, etc.)
+/// sin pasar por la fachada `View`.
+pub fn paint_mark(
+    scene: &mut llimphi_ui::llimphi_raster::vello::Scene,
+    rect: llimphi_ui::PaintRect,
+    palette: &WawaMarkPalette,
+) {
+    // Encajamos el rombo en el menor de los lados del rect, centrado.
+    // Así el sello mantiene su proporción incluso si el rect no es
+    // cuadrado (pero degrada gracilmente).
+    let side = rect.w.min(rect.h) as f64;
+    let cx = rect.x as f64 + rect.w as f64 * 0.5;
+    let cy = rect.y as f64 + rect.h as f64 * 0.5;
+    let half = side * 0.5;
+
+    // === 1) Rombo de fondo con degradado vertical ===
+    //
+    // Construimos el rombo como BezPath (4 segmentos rectos) en coords
+    // absolutas. El degradado lineal va de (cx, top) a (cx, bot) — toda
+    // la altura del rombo — para que el cambio de tono sea continuo y
+    // sin sutura visible.
+    let top = Point::new(cx, cy - half);
+    let right = Point::new(cx + half, cy);
+    let bot = Point::new(cx, cy + half);
+    let left = Point::new(cx - half, cy);
+
+    let mut rhombus = BezPath::new();
+    rhombus.move_to(top);
+    rhombus.line_to(right);
+    rhombus.line_to(bot);
+    rhombus.line_to(left);
+    rhombus.close_path();
+
+    let gradient = Gradient::new_linear(top, bot)
+        .with_stops([palette.indigo, palette.purple].as_slice());
+
+    scene.fill(Fill::NonZero, Affine::IDENTITY, &gradient, None, &rhombus);
+
+    // === 2) "WA" implícita ===
+    //
+    // Coords en porcentaje del rombo (origen = esquina top-left del bbox
+    // del rombo = (cx-half, cy-half), unidad = side). Toda stroke diagonal
+    // tiene |dy/dx| = 1 (paralela a las aristas del rombo) — por eso lee
+    // como faceta del diamante en vez de letra dibujada encima.
+    let coord = |fx: f64, fy: f64| -> Point {
+        Point::new(
+            cx - half + fx * side,
+            cy - half + fy * side,
+        )
+    };
+
+    // Unidad de escala: span vertical de las letras. dx==dy en cada leg
+    // hace que las strokes corran a 45° exactos (mismo ángulo que las
+    // aristas del rombo). Probado para que WA quede inscrita con holgura
+    // en el rombo a cualquier escala — al achicar (32px) sigue legible,
+    // al ampliar (300px) no se ve disperso.
+    let unit: f64 = 0.10;
+    // Línea de picos en la sutura azul/púrpura.
+    let top_y = 0.50;
+    // Línea de valles/pies en el cuadrante púrpura inferior.
+    let bot_y = top_y + unit;
+
+    // ---- W (zigzag de 4 segmentos) ----
+    // Centramos la composición WA: span total ≈ 0.61 (W 0.36 + gap 0.03
+    // + A 0.18 + holgura). Empezamos en x = 0.19 para que el centro
+    // óptico de WA caiga cerca de x = 0.50.
+    let w_left = 0.20;
+    let p0 = coord(w_left + 0.0 * unit, top_y);
+    let p1 = coord(w_left + 1.0 * unit, bot_y);
+    let p2 = coord(w_left + 2.0 * unit, top_y);
+    let p3 = coord(w_left + 3.0 * unit, bot_y);
+    let p4 = coord(w_left + 4.0 * unit, top_y);
+
+    // ---- A (legs + crossbar) ----
+    // Gap entre W y A — apenas un respiro para que no se confundan en
+    // un solo zigzag.
+    let gap = 0.04;
+    let a_left = w_left + 4.0 * unit + gap;
+    let a0 = coord(a_left + 0.0 * unit, bot_y);
+    let a1 = coord(a_left + 1.0 * unit, top_y);
+    let a2 = coord(a_left + 2.0 * unit, bot_y);
+    // Crossbar a mitad de altura, en el tercio interno de cada leg para
+    // que no toque las puntas (queda más A que H).
+    let cross_y = (top_y + bot_y) * 0.5 + 0.005; // un toque debajo del medio óptico
+    let c_offset = 0.30 * unit;
+    let cb0 = coord(a_left + 0.0 * unit + c_offset, cross_y);
+    let cb1 = coord(a_left + 2.0 * unit - c_offset, cross_y);
+
+    // Un único BezPath con cuatro subtrazos (move_to abre subtrazo nuevo).
+    let mut wa = BezPath::new();
+    // W
+    wa.move_to(p0);
+    wa.line_to(p1);
+    wa.line_to(p2);
+    wa.line_to(p3);
+    wa.line_to(p4);
+    // A — legs.
+    wa.move_to(a0);
+    wa.line_to(a1);
+    wa.line_to(a2);
+    // A — crossbar (horizontal, único trazo no diagonal).
+    wa.move_to(cb0);
+    wa.line_to(cb1);
+
+    // Espesor escalable: ~2.0% del lado del rombo. Levemente más fino
+    // que la W sola, porque ahora hay 7 strokes en vez de 4 y conviene
+    // bajar densidad.
+    let stroke_w = (side * 0.020).max(1.0);
+    let stroke = Stroke::new(stroke_w)
+        .with_join(llimphi_ui::llimphi_raster::kurbo::Join::Miter)
+        .with_caps(llimphi_ui::llimphi_raster::kurbo::Cap::Butt);
+
+    scene.stroke(
+        &stroke,
+        Affine::IDENTITY,
+        palette.stroke,
+        None,
+        &wa,
+    );
+
+    // === 3) Merkle Core ===
+    //
+    // Sobre P2 — pico central de la W, en la sutura exacta entre azul y
+    // púrpura. Halo amplio semi-transparente + núcleo opaco compacto
+    // dan sensación de glow sin blur real.
+    let core_r = (side * 0.018).max(1.2);
+    let halo_r = core_r * 2.6;
+    let halo_color = with_alpha(palette.core, 0.30);
+    scene.push_layer(Mix::Normal, 1.0, Affine::IDENTITY, &Circle::new(p2, halo_r));
+    scene.fill(
+        Fill::NonZero,
+        Affine::IDENTITY,
+        halo_color,
+        None,
+        &Circle::new(p2, halo_r),
+    );
+    scene.pop_layer();
+    scene.fill(
+        Fill::NonZero,
+        Affine::IDENTITY,
+        palette.core,
+        None,
+        &Circle::new(p2, core_r),
+    );
+}
+
+/// Devuelve `color` con su alpha multiplicado por `mult` (no reemplazado).
+/// Mantenemos la cromaticidad intacta.
+fn with_alpha(color: Color, mult: f32) -> Color {
+    let [r, g, b, a] = color.components;
+    AlphaColor::new([r, g, b, a * mult])
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn default_palette_has_distinct_indigo_and_purple() {
+        let p = WawaMarkPalette::default();
+        assert_ne!(p.indigo.components, p.purple.components);
+        assert_ne!(p.stroke.components, p.core.components);
+    }
+
+    #[test]
+    fn with_alpha_multiplies_not_replaces() {
+        let c = Color::from_rgba8(100, 100, 100, 255);
+        let halved = with_alpha(c, 0.5);
+        assert!((halved.components[3] - 0.5).abs() < 1e-3);
+        // RGB intactos.
+        assert!((halved.components[0] - c.components[0]).abs() < 1e-3);
+    }
+}