feat: adopt vet as the full-stack reference app in the docs hub

Add react/vet (section: apps) serving its TypeDoc lib site and the
doc-weaver MCP bundle (docs/mcp, port 8013) alongside react-auth,
react-openapi and doc-weaver.

config.yml

@@ -151,6 +151,15 @@ repos:
       lib: site
       api: site
 
+  - name: vet
+    source: ../react/vet
+    title: Vet
+    description: Full-stack reference application — OpenAPI-first FastAPI server paired with the spec-driven React admin client (@aetoskia/react-openapi + @aetoskia/react-auth).
+    section: apps
+    docs:
+      lib: site
+      mcp: { bundle: docs/mcp, server: vet, port: 8013 }
+
 static:
   - kind: wiki
     repo: standards