docs: query comments say what each query selects and why, not how it came to be (#6277)

Rewrites the internal/db/queries comments to rule 32 and regenerates
dbq, whose doc comments and embedded SQL carry them. The bugs behind the
tiered mixes, the md5 order seed, the score bands and the round-robin
arms are restated as the constraint each one enforces; counts from one
library and stale cross-references are gone.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
2026-10-23 12:31:13 -04:00
co-authored by Claude Opus 5.5
parent 7e6228c13f
commit 1d4ef1a23f
100 changed files with 648 additions and 698 deletions
@@ -1,4 +1,4 @@
-- Rotation state for system-playlist sample-history dedup (#415).
-- Rotation state for system-playlist sample-history dedup.
-- One row per (user, playlist_kind). played_track_ids accumulates
-- tracks heard from that playlist in the current rotation; shuffle
-- prefers ids NOT in this set, then resets when the snapshot is