Finish migrating all db.session.get() + abort(404) patterns to the modern
Flask-SQLAlchemy 3.x db.get_or_404() helper across all files modified by
this PR.
Changes:
- admin/routes.py: 3 instances converted
- admin_accounts/routes.py: 3 instances converted
- connections/routes.py: 2 instances converted
- notifications/routes.py: 1 instance converted
- user_details.py: 1 instance converted (also removed unnecessary abort import)
This completes the migration started in the previous commit, ensuring
consistent use of the Flask-SQLAlchemy 3.x pattern throughout the PR.
Total conversions in PR: 17 instances (7 wizard + 10 other files)
- Added `MediaUserDetails` and `UserLibraryAccess` data classes for consistent user information representation.
- Implemented `get_user_details` method in various media clients (Emby, Jellyfin, Kavita, Komga, Plex, Romm) to return standardized user details.
- Updated `get_user` methods in media clients to maintain backward compatibility while leveraging the new user details structure.
- Enhanced user listing and synchronization processes to include policy attributes and library access information.
- Improved user interface templates to display user policies and account information more effectively.
- Added human-readable date formatting for expiration and creation dates in user-related templates.
