Operator decision: the enricher is canonical. No MBID still runs the
provider chain (name-based providers — Deezer/Last.fm — resolve
without an MBID); if every provider returns ErrNotFound the row
settles cover/artist source 'none' at the current sources version
(re-eligible only when the registered provider set changes). It does
NOT skip-and-leave-NULL.
The two _NoMBID_LeavesNull tests predated the name-based providers
(0020 slice) and asserted the old skip→NULL contract. Updated:
- TestEnrichArtist_NoMBID_SettlesNone: stub now returns ErrNotFound
(realistic MBID-only-provider-with-empty-MBID), expect source 'none'.
- TestEnrichAlbum_NoSidecarNoMBID_SettlesNone: empty registry →
allWere404 stays true → expect 'none'.
Last failing cluster from the CI-integration initiative; suite should
now be fully green.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen
412b9e37eb