Register MusicBrainz as a first-class metadata source alongside Deezer, iTunes, Spotify, Discogs, and Hydrabase. Expose the shared client through metadata services, add the settings option, and expand the MusicBrainz search adapter with source-compatible artist, album, track, and detail methods.
Carry MusicBrainz IDs through similar-artist discovery, recommended artists, artist map serialization, and personalized playlist selection. Update DB migrations and lookup filters so similar_artist_musicbrainz_id is preserved on older schemas and used for source requirements and library exclusion.
Normalize MusicBrainz album adapter output for import context and add regression coverage for registry mapping, typed album conversion, and similar-artist filtering. Verified by user with 120 focused tests passing.
- keep existing /api/image-proxy URLs from being wrapped again
- reuse the shared metadata package instead of duplicating URL logic in web_server.py
- add regression coverage for proxy passthrough and internal URL normalization
- move Spotify status publishing onto auth, disconnect, and rate-limit transitions
- keep dashboard and debug consumers on the shared cached snapshot
- leave only the initial snapshot seed as a fallback probe
- move metadata-source and Spotify status caching out of web_server.py
- keep the public /status payload unchanged while shrinking server-side glue
- centralize invalidation and TTL handling in core/metadata/status.py
- let core.metadata.registry own per-profile Spotify client caching
- register the DB-backed profile credentials provider from web_server.py
- invalidate only the affected profile cache entry on save, delete, and auth
- make web_server.py read and refresh Spotify from core.metadata.registry
- add single-key metadata cache eviction for Spotify reauth
- export the new cache helper through the metadata package shims
- split metadata lookup logic into core/metadata/*
- keep core/metadata_service.py as the legacy barrel
- update tests and artist-detail code to patch concrete modules
- Keep existing metadata_cache and metadata_service at the top level for now
- Move the new branch-local metadata helpers under core/metadata
- Share MusicBrainz release cache state from core.metadata.source and update import sites
