feat(standards): add Drone CI standard (PyPI package + Docker deployment)

Document the two `.drone.yml` shapes used across the org, derived from the
repos:

- Type A `python-lib.yaml`: build-and-publish-pypi + backfill-pypi-from-tags
- Type B `service-docker.yaml`: build-and-deploy-service + build-and-deploy-site

- add reference page `10_drone_pipelines`
- vendor `src/templates/drone/` into the MCP bundle (`drone.json`)
- expose `registry://drone` + `list_drone_templates` / `get_drone_template`
- wire `build.py` to vendor drone templates; rebuild nav/index (14 modules)

standards/mcp/nav.json

@@ -44,6 +44,11 @@
     "resource": "docs://modules/infra_adaptors",
     "title": "Infra Adapters"
   },
+  {
+    "module": "drone_pipelines",
+    "resource": "docs://modules/drone_pipelines",
+    "title": "Drone Pipelines"
+  },
   {
     "module": "genericity_matrix",
     "resource": "docs://modules/genericity_matrix",