fix: prune stale analysis queues and cap loudness backfill window (#480)

* fix(analysis): prune stale backfill jobs and limit prefetch window

Drop pending backfill and cpu-seed jobs that are no longer in the active playback queue, and add debug counters for pruned work. Limit loudness backfill scheduling to the current track plus the next five tracks to prevent runaway queue growth in dev sessions.

* chore(analysis): remove unused loudness prefetch parameter

Drop the now-unused incoming-tracks parameter from the loudness prefetch helper and update internal call sites to match the current queue-window scheduling logic.

* docs(changelog): document analysis queue control fix (#480)

Add a short 1.46.0 Fixed entry describing stale backfill pruning, the current+5 loudness backfill window cap, and debug prune counters for diagnostics.

* docs(contributors): add cucadmuh entry for PR #480

Logs the analysis-queue prune + loudness backfill window cap in the
Settings → System → Contributors list.

src/pages/Settings.tsx

@@ -209,6 +209,7 @@ const CONTRIBUTORS = [
       'Shortcuts: action registry, dynamic CLI help, 9 new input targets + F1 help binding (PR #435)',
       'Environment upgrade & hot-cache playback — replay via RAM/disk on same-track and queue-end resume, playback-source icon stays correct after resume/undo/gapless, sidebar new-releases 500-id cap merge, Windows tray double-click fix, lazy-loaded routes, rodio 0.22 migration (PR #463)',
       'Audio: post-sleep stream recovery (Windows + Linux) with poll-gap-armed stall watchdog; preview seekbar freeze + anti-jump on preview end; remove card hover lift and per-card GPU compositing hints (PR #476)',
+      'Analysis queue control: prune stale http-backfill / cpu-seed jobs when tracks leave the playback queue, cap loudness backfill warmup to current + next 5 tracks, plus debug counters for diagnostics (PR #480)',
     ],
   },
   {