- INCOMPATIBLE_GENRES / INCOMPATIBLE_TITLE_KEYWORDS removed: a global
blocklist papered over an identity bug (name search returning a
homonym) and punished every user's taste for it.
- artist_guardrail: ArtistLookup seam (mockable), id before text
(qobuz:{id} nodes resolve by id; MBIDs hit the mb_qobuz_artist_match
cache before search_artists), validation relative to the playlist
seeds (shared level-1 genre root or a shared MusicBrainz tag), homonym
tie-break by seed neighbourhood / label, reject when no signal exists.
- suggestions: stable sort by similarity_score desc, dedup keeping the
higher score, THEN truncate (the shuffle threw the score away and the
dedup kept the first hit while claiming the best).
- Eight network-free tests cover the rules; rand is now unused here.
cx
vicrodh
6caab7b71a