- Extract rescan logic into new RescanService (src/server/services/rescan_service.py)
- SchedulerService now only handles APScheduler cron scheduling
- Move scheduler sub-services (folder_rename, folder_scan, key_resolution) to scheduler/ folder
- Keep RescanOrchestrator as backward-compatible alias
- Update all imports across api/, server/, and test files
- Add key_resolution_service.py to resolve provider keys for folders without key/data files
- Search anime provider and match folder names (case-insensitive, exact match required)
- Only save to DB if exactly one match found; otherwise skip
- Add comprehensive unit tests (28 tests)
- Integrate into scheduler_service after nfo_repair scan
- Update ARCHITECTURE.md documentation
