Three ruff S110 violations replaced with logger.debug calls:
- amazon_client.py:527 duration backfill ASIN search
- amazon_client.py:679 album metadata fetch in _fetch_album_metas
- amazon_worker.py:401 artist image backfill from albums
Background worker matching library artists/albums/tracks to Amazon ASINs
via T2Tunes search. Follows same 6-tier priority queue as Deezer/iTunes/
Spotify/Qobuz/Tidal workers. Backfills artist thumbnails from album cover
stand-ins (T2Tunes exposes no direct artist images).
- core/amazon_worker.py: new AmazonWorker class with full parity
- database/music_database.py: expand _add_amazon_columns to cover
amazon_id/amazon_match_status/amazon_last_attempted on artists,
albums, and tracks (was artists-only)
- web_server.py: import, init, register in enrichment panel, add to
scan pause/resume dicts and rate monitor key map
- helper.js: WHATS_NEW 2.5.3 entry for enrichment worker
