- Thread CRUD: create, update, delete with cascade candidate cleanup
- Candidate CRUD: create, update, delete with all item-compatible fields
- getAllThreads with subquery aggregates for candidateCount and price range
- getThreadWithCandidates with candidate+category join
- resolveThread: atomic transaction creating collection item from candidate data
- Category fallback to Uncategorized on resolution if category deleted
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Item CRUD: getAllItems with category join, getById, create, update, delete
- Category CRUD: getAll ordered by name, create, update, delete with reassignment
- Totals: per-category aggregates and global totals via SQL SUM/COUNT
- All 20 service tests passing
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
