Implemented musicFolderId parameter support for Subsonic API Search2 and Search3 endpoints, completing multi-library functionality across all Subsonic endpoints.
Key changes:
- Added musicFolderId parameter handling to Search2 and Search3 endpoints
- Updated search logic to filter results by specified library or all accessible libraries when parameter not provided
- Added proper error handling for invalid/inaccessible musicFolderId values
- Refactored SearchableRepository interface to support library filtering with variadic QueryOptions
- Updated repository implementations (Album, Artist, MediaFile) to handle library filtering in search operations
- Added comprehensive test coverage with robust assertions verifying library filtering works correctly
- Enhanced mock repositories to capture QueryOptions for test validation
Signed-off-by: Deluan <deluan@navidrome.org>
1aa48de4eb