- Added `FolderValidationError` exception handling in the REST API to improve error responses for folder-related operations.
- Refactored several functions in the library routes to remove redundant try-except blocks, simplifying the code and improving readability.
- Updated the `LibraryAgent` model to directly use `folderId` and `Folder.name`, enhancing data consistency.
- These changes improve the overall robustness and maintainability of the library management system.