feat: dominium standalone — simulador de campo medio sobre Llimphi

Front-door publicable de dominium: los 9 crates propios como path
members; Llimphi, app-bus, rimay-localize, wawa-config y pluma-notebook
por git-dep al monorepo tawasuyu.git (branch=main). cargo check
--workspace --all-targets pasa exit 0.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

01_yachay/dominium/dominium-core/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "dominium-core"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+publish.workspace = true
+description = "dominium — núcleo del simulador de campo medio: grilla SoA de 5 capas + Lemmings vectoriales + las 6 acciones atómicas. Sin deps gráficas."
+
+[dependencies]
+serde = { workspace = true }
+libm = { workspace = true }
+
+[dev-dependencies]
+serde_json = { workspace = true }