ver0.5

echo-memory.plugin.src/skills/echo-memory/references/vault-layout.md

@@ -1,15 +1,12 @@
 # Vault Layout & Frontmatter Conventions
 
-Mirrors the canonical conventions defined in the vault's own `STRUCTURE.md` and `BOOTSTRAP.md`. If those change, they are the source of truth.
+**This document is canonical.** The ECHO vault holds data only — there are no `CLAUDE.md` / `STRUCTURE.md` / `BOOTSTRAP.md` / `index.md` control docs in it. Layout, taxonomy, and frontmatter conventions live here in the plugin; the bootstrap procedure (`references/bootstrap.md`) builds the tree below into any empty vault.
 
 ## Folder Map (root-addressed)
 
 ```
 /vault/
-├── CLAUDE.md          ← operating contract + session protocol
-├── STRUCTURE.md       ← layout, taxonomy, frontmatter standard
-├── BOOTSTRAP.md       ← preflight/repair manifest (read first)
-├── spinup.md  index.md  README.md
+├── README.md          ← thin human signpost (NOT read for routing)
 ├── inbox/
 │   ├── captures/      ← quick captures (inbox.md), date-prefixed lines
 │   ├── imports/       ← raw imported material
@@ -36,6 +33,7 @@ Mirrors the canonical conventions defined in the vault's own `STRUCTURE.md` and
 ├── reviews/           ← weekly / monthly / quarterly / annual
 ├── archive/           ← notes / projects / imports
 └── _agent/
+    ├── echo-vault.md  ← bootstrap marker: schema_version + bootstrap date (plugin-owned; the "is this vault set up?" probe)
     ├── context/       ← current-context.md and task bundles
     ├── memory/
     │   ├── working/   ← transient, time-boxed