feat: a held album below the quality you settle for, or holding a video rip, stays wanted for a better copy, and the import replaces the old tracks with their likes and plays carried over (M502 #5524)

- acquisition_settings.upgrade_until (default High quality lossy, Lidarr's
  cutoff, note #5527; "" is off), an "Upgrade until" row under Searching.
- The wanted worker judges held albums hourly: tier per format from size per
  second (the scanner records no bitrate), the album's worst. Below the
  cutoff it is wanted for quality; a video rip among its tracks always.
- The schedule searches upgrades weekly, after open wants; a release no
  better than the copy held is refused ("not_better").
- The import matches each file to the track it would replace (recording,
  then disc/track) and replaces it when it is a rip or the file is a better
  tier: over the same path in one rename, or filed beside it and the old
  track folded in (library.ReplaceTrack: file first, then foldTrackInto).
  Nothing better: the release is set aside.
- Collection › Upgrades (Lidarr's Cutoff Unmet); Suspect sources says when a
  clean copy was looked for instead of Lidarr's search.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/dbtest/reset.go

@@ -191,7 +191,7 @@ func ResetDB(t *testing.T, pool *pgxpool.Pool) {
 	if _, err := pool.Exec(ctx, `
 		UPDATE acquisition_settings
 		   SET auto_grab = DEFAULT, search_interval_hours = DEFAULT, allowed_qualities = DEFAULT, import_root = DEFAULT,
-		       seed_ratio = DEFAULT, seed_days = DEFAULT, stall_hours = DEFAULT,
+		       seed_ratio = DEFAULT, seed_days = DEFAULT, stall_hours = DEFAULT, upgrade_until = DEFAULT,
 		       library_listing_started_at = now(), library_listed_at = now(), library_unlisted = 0,
 		       last_pass_at = NULL, last_pass = DEFAULT, updated_at = DEFAULT`,
 	); err != nil {