- Add POST/GET /skill-registry/skills/:sourceId/:slug/ratings routes
- Import skillRatingService in skill-registry routes
- Add upsertCommunityRatingsStub() in fetcher, called after each skill upsert
- Import communityRatings from schema in fetcher
- Update list() and getById() in skill-registry.ts to LEFT JOIN communityRatings
- Include averageRating, ratingCount, taskCount, avgCostUsd, lastUsedAt in SkillListItem
- Add agentSkills usage aggregation via LEFT JOIN + SUM/AVG/MAX
- Add fire-and-forget recordUsageForAgent call in heartbeat after finalizeAgentStatus
- Dynamic import keeps skill-registry-ratings off critical startup path
- All 44 skill-registry tests pass, full server suite (536) green
- Create skillRegistryRoutes() factory with 6 endpoints
- GET /api/skill-registry/skills (list, includeRemoved support)
- GET /api/skill-registry/skills/:sourceId/:slug (single skill, 404 on missing)
- GET /api/skill-registry/skills/:sourceId/:slug/versions (version history)
- POST /api/skill-registry/fetch (trigger fetchAllSources)
- POST /api/skill-registry/skills/:sourceId/:slug/install (copy to agent dir)
- POST /api/skill-registry/skills/:sourceId/:slug/rollback (restore prior version)
- DELETE /api/skill-registry/skills/:sourceId/:slug (soft-delete)
- assertBoard auth guard on every route
- Mount skillRegistryRoutes() in app.ts after companySkillRoutes
- Update tests to use two-segment path params (sourceId/slug) for Express 5 compatibility
- All 12 route tests pass
