Summed tag weight rewards a track for carrying many of the user's tags, so
on the deploy two artists whose every track carries the whole lo-fi profile
took all 120 rows of the taste-unheard query. capByAlbumAndArtist ran after
the LIMIT and left 6, and the arm with the lowest skip rate (12% against
~23%) handed its slots to dormant and random.
The query now ranks within album, then within artist over what the album
cap kept, before the LIMIT: the same walk the Go cap makes, so the bucket
fills from as many artists as match. The caps come from the Go constants.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
