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/src/mkdocs.lib.yml

@@ -63,6 +63,7 @@ nav:
   - Worker & Progress: 07_worker_and_progress.md
   - Human-in-the-Loop: 08_human_in_loop.md
   - Infra Adapters: 09_infra_adaptors.md
+  - Drone Pipelines: 10_drone_pipelines.md
   - Genericity Matrix: 12_genericity_matrix.md
   - Auth Integration: 14_auth_integration.md
   - Library Registry: 13_library_registry.md