creation

crates/modules/ui_engine/widgets/lapaloma-flow/Cargo.toml

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+[package]
+name = "lapaloma-flow"
+version = { workspace = true }
+edition = { workspace = true }
+license = { workspace = true }
+authors = { workspace = true }
+publish = { workspace = true }
+description = "Lapaloma — diagramas de flujo Sankey: columnas topológicas + barycenter ordering + ribbons como triangle strips de béziers."
+
+[dependencies]
+lapaloma-core = { path = "../../libs/lapaloma-core" }
+lapaloma-render = { path = "../lapaloma-render" }
+gpui = { workspace = true }

crates/modules/ui_engine/widgets/lapaloma-flow/src/lib.rs

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+//! `lapaloma-flow` — diagramas Sankey.
+//!
+//! Pipeline (sección 3.7 del ARCHITECTURE.md):
+//! 1. Columnas via longest-path en el DAG (back-edges drop).
+//! 2. Flow por nodo = max(in_value, out_value).
+//! 3. Barycenter ordering con inversion-count crossings.
+//! 4. Stripes por edge dentro de cada lado del nodo.
+//! 5. Ribbons como triangle-strip de béziers, un draw call por
+//!    ribbon, color por vértice.
+
+#![forbid(unsafe_code)]
+#![allow(dead_code)]
+
+pub mod layout {}
+pub mod ribbon {}
+pub mod element {}