The blind 'correct the parent artist's source id from an album/track match'
logic was copy-pasted into four enrichment workers; the Deezer fix only covered
one. AudioDB, Qobuz, and Tidal had the identical bug and would corrupt their own
id columns (and re-corrupt after any cleanup).
All three now gate the correction on a name match between the result's artist
and the parent artist (audiodb reads result['strArtist']; qobuz/tidal thread the
result artist name in from their callers, as Deezer does). Regression tests
cover mismatch-skips and match-corrects for each.
