- Modified SeriesManagerService to create SerieList with skip_load=True
- Changed scan_and_process_nfo() to load series from database instead of filesystem
- Fixed database transaction issue by creating separate session per task
- Verified scans only run once during initial setup, not on normal startup
- Test media scan runs on first startup
- Test media scan skipped on subsequent startup
- Test error handling for flag check/mark
- Test _check_incomplete_series_on_startup behavior
- Test detection of incomplete series
- Test all edge cases (8 tests total)
