TransferHistory schema omitted src_fileitem, dest_fileitem and files which
are emitted by to_dict, so the response_model filter stripped the file
size the frontend reads from src_fileitem.size.
- Implement batch AI re-organize endpoint for transfer history with progress tracking
- Add batch_manual_transfer_redo system task template and prompt generation
- Refactor agent_manager to support generic background prompt execution
- Add AIRecommendChain for search result recommendation using agent background prompt
- Update search endpoints to use new AIRecommendChain and remove legacy code
- Enhance test cases for batch manual transfer redo
- Minor code cleanup and style fixes
jxxghp