- Fix _resolve_key_via_search to use 'title' instead of 'name'
- Extract key from 'link' field URL (e.g., /anime/stream/naruto -> naruto)
- Skip folders with unresolved keys instead of crashing with 'Series key cannot be empty'
- Update tests to use correct field names (title/link)
SetupService.run() now checks each anime folder for tvshow.nfo,
logo.png, and poster/fanart images instead of using hardcoded
defaults. Provider key resolution via search is unchanged.
Extract SetupService class from initialization_service to handle:
- Scan data/ folder subdirectories
- Extract title and year from folder names (YYYY pattern)
- Create AnimeSeries records in database
- Resolve provider keys via search (single exact match)
Updates _scan_folders_to_database() to delegate to SetupService.run().
Adds comprehensive unit tests for SetupService.
