feat: full-stack MCP surface — client template, npm CI, 13 repos

- build.py: vendor templates/client into mcp/templates/client with
  client.json manifest (16 kinds); register drone-npm as a third CI shape
  (types: pypi/npm/docker); root *.py stale doc numbers fixed
- registry.py: registry://client resource + list_client_components /
  get_client_component / get_client_template tools; build prompt gains the
  client scaffold step (docs://modules/ui_admin); compliance prompt covers
  npm packages; drone docs describe all three shapes
- repos.json (+mcp): doc-weaver, react-auth, react-openapi (npm Type B,
  package.json version source), vet (app Type C, VERSION)
- docs: 90_drone_pipelines gains Type B npm section; 91_versioning covers
  package.json as a version source; 94_repository_inventory gains the npm
  package table and services/apps Type C; lib index updated

Verified: bundle regen (24 modules, client 16, drone 3, repos 13); registry
client readers exercised against the vendored bundle.

standards/mcp/drone.json

@@ -3,6 +3,7 @@
   "template": "templates/drone",
   "types": [
     "pypi",
+    "npm",
     "docker"
   ],
   "components": [
@@ -12,6 +13,12 @@
       "placeholder": "",
       "description": "Drone pipeline: build + publish a Python package to the private PyPI index."
     },
+    {
+      "kind": "drone-npm",
+      "path": "npm-lib.yaml",
+      "placeholder": "",
+      "description": "Drone pipeline: build + publish an npm package to the private npm registry."
+    },
     {
       "kind": "drone-service",
       "path": "service-docker.yaml",