- New cantaloupe_sync.py module with complete pipeline
- Heuristic Excel column mapping (20+ keyword patterns)
- Diff engine: detects new/changed/removed/unchanged assets
- 5 API endpoints: sync, list batches, view batch, approve, reject
- cantaloupe_sync_batches table with status workflow
- Admin server port changed to 8090
- openpyxl added to requirements.txt