- Added surgical console logging in '_refresh_file_li_background' to track raw API data vs processed records.
- Refined the ID safety net to only inject missing keys, preventing accidental overwrites of existing relationships.
- Hardened '_process_generic_props' to prevent 'null' random IDs from clobbering clean V3 IDs.
- Restored specific object ID fields to 'properties_to_save' for full IndexedDB synchronization.