- Thread CRUD: GET /, POST /, GET /:id, PUT /:id, DELETE /:id
- Candidate CRUD: POST /:id/candidates, PUT/DELETE nested candidates
- Resolution: POST /:id/resolve with validation and error handling
- Image cleanup on thread/candidate deletion
- Routes mounted at /api/threads in server index
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
