<!-- overlay:fsd — FSD doc layout (one doc per slice node). -->
## ARCHITECTURE (Feature-Sliced Design)

Docs mirror the FSD graph: one doc per **slice** node (and one per segment node of `shared`/`app`), describing the slice's public API (its `index`) and its segments. A doc's `beadloom:` ref ties it to its node, so `sync-check` can tell when the slice's symbols drifted from its prose. When a new slice appears, add its doc; when a module moves slice or layer, move its doc to match.

