feat(state-hub): add Extension Points and Technical Debt tracking
New entity types (DB tables, API routers, Pydantic schemas, Alembic
migration a3f1c2d4e5b6):
- extension_points: ep_id, domain, title, ep_type, status, priority,
location, description, topic_id, workstream_id
- technical_debt: td_id, domain, title, debt_type, severity, status,
location, description, topic_id, workstream_id
MCP server: 6 new tools — register_extension_point, list_extension_points,
update_ep_status, register_technical_debt, list_technical_debt,
update_td_status (each write emits a progress_event)
Dashboard: two new pages (extensions.md, techdept.md) with KPI sidebar,
charts, urgent-items section, and filterable card lists. Both added to
nav in observablehq.config.js.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
tegwick
090a206f3d