feat: release design system engine, studio and component contracts

packages/mcp/README.md

@@ -9,3 +9,7 @@ bunx wrnexus-mcp --root=.
 It exposes current routes, components with props/events, database schema files, compiler diagnostics,
 runtime errors, dev-server health, framework documentation and installed packages. Files are resolved
 inside the configured application root and returned as bounded structured JSON.
+
+## Packaging, shared designs and recovery
+
+See [RELEASE.md](RELEASE.md) for installed Studio/MCP usage, deterministic shared design packages, explicit upgrades, storage migration and the local release workflow. Existing APIs and default component behavior remain available.