feat(classification-spine): implement STATE-WP-0065 repo-anchored model

Replace the ad-hoc coordination-domain spine with the Repo Classification
Standard: 14 market domains, classification columns on managed_repos, and
workplans anchored by repo_id (topic_id optional).

- Add Alembic migration d8e9f0a1b2c3 with data backfill and workstream→workplan rename
- Add api/classification.py validation and register-from-classification tooling
- Expose workplan-first REST/MCP surface with legacy workstream aliases
- Add C-24 consistency rule and legacy domain frontmatter mapping
- Update dashboard repos page with category/capability/stake filters
- Update orientation docs; mark STATE-WP-0065 finished

mcp_server/TOOLS.md

@@ -20,6 +20,29 @@ Do not use them as a substitute for formal work definition inside the domain rep
 
 ---
 
+## Workplan terminology (STATE-WP-0065)
+
+**Preferred terms:** workplan, `workplan_id`, `/workplans/…`
+
+**Legacy compatibility:** `workstream`, `workstream_id`, `/workstreams/…`, and
+`create_workstream` / `update_workstream` MCP tools remain available as aliases.
+They call the same implementation as the workplan-named tools and endpoints.
+
+| Preferred (workplan) | Legacy alias (workstream) |
+|---|---|
+| `create_workplan(repo_id, …)` | `create_workstream(repo_id, …)` |
+| `update_workplan` / `update_workplan_status` | `update_workstream` / `update_workstream_status` |
+| `list_workplans` | `list_workstreams` |
+| `create_workplan_dependency` | `create_dependency` |
+| `POST /workplans/` | `POST /workstreams/` (deprecated headers) |
+| `workplan_id` query/body field | `workstream_id` (accepted alias) |
+
+Repo classification filters: `list_repos_by_classification(category?, domain?,
+capability_tag?, business_stake?)` and extended `list_domain_repos(...)` query
+params use `GET /repos/` classification spine fields.
+
+---
+
 ## MCP/REST Parity and Failure Handling
 
 The MCP server is a thin stateless HTTP client over the FastAPI service. On
@@ -28,6 +51,10 @@ endpoint they wrap:
 
 | MCP tool | REST endpoint |
 |---|---|
+| `create_workplan(...)` | `POST /workplans/` |
+| `list_workplans(...)` | `GET /workplans/` |
+| `update_workplan_status(...)` | `PATCH /workplans/{workplan_id}` |
+| `list_repos_by_classification(...)` | `GET /repos/?category=…` |
 | `create_workstream(...)` | `POST /workstreams/` |
 | `create_task(...)` | `POST /tasks/` |
 | `update_task_status(...)` | `PATCH /tasks/{task_id}` |