Own-state ("in library") relied on an exact artist-NAME match, so an owned
album whose name differed from the MB canonical (punctuation/locale/feat.)
showed as not-owned even when followed. Capture the MusicBrainz artist MBID
on LibraryItem and prefer it for matching.
- New LibraryItem.artistMbid (migration add_library_artist_mbid). Populated at
import (pipeline) + scan, both of which already hold the resolved target;
the pipeline also now stores rgMbid (it previously didn't). COALESCE on
conflict backfills MBIDs on re-scan without clobbering.
- /api/artists "in library, not followed" matches by artistMbid first, name
case-insensitively as fallback (rows predating the column). Library route
prefers the item's own artistMbid over the release join.
Last.fm/discover own-state still use name-match (they work) — a smaller
follow-up. worker 233, web 186 tests.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Jonathan