Migrates ~74 call sites away from the playerStore re-export shims that
were kept during M0–E.41 to avoid touching 30+ imports per PR. Now
that the bigger refactor work is done, each helper goes back to its
real home:
- `initAudioListeners`, `installQueueUndoHotkey`, `flushPlayQueuePosition`
→ from their own store modules
- `getPlaybackProgressSnapshot`, `subscribePlaybackProgress`,
`PlaybackProgressSnapshot` → from `playbackProgress`
- `resolveReplayGainDb`, `shuffleArray`, `songToTrack`
→ from `utils/*`
- `_resetQueueUndoStacksForTest`, `consumePendingQueueListScrollTop`,
`registerQueueListScrollTopReader` → from `queueUndo`
- `PlayerState`, `Track` types → from `playerStoreTypes`
Drops the corresponding 13 re-export stubs from `playerStore.ts` and
the now-unused imports. Also drops dead section banners + per-wrapper
comments above one-line action delegates. Trims one stale "(separate
PR)" note in `transportLightActions.ts` since that follow-up landed
in E.39.
`playerStore.ts`: 180 → 112 LOC (−68). Down from Phase E's starting
3732 LOC.
`bootstrap.test.ts` mock target updated from `../store/playerStore`
to `../store/queueUndoHotkey` to keep the spy reachable after the
import change.
Two thematic cuts in one PR:
- `src/store/queueUndoAudioRestore.ts` — `queueUndoRestoreAudioEngine`
(~70 LOC). Reload the Rust audio engine to match a queue-undo
snapshot: audio_play with snapshot track params, optional
audio_seek to the snapshot position, audio_pause if the snapshot
captured a paused state. Generation-guard bails on concurrent
playTrack. Drives recordEnginePlayUrl, setDeferHotCachePrefetch,
and touchHotCacheOnPlayback.
- `src/store/loudnessPrefetch.ts` — `prefetchLoudnessForEnqueuedTracks`.
Warms the loudness cache for the current track + next-N window
after a bulk enqueue, no-op when normalization isn't loudness.
Both file-private; no caller-side changes outside playerStore's own
imports. Removes the unused `collectLoudnessBackfillWindowTrackIds`
import that was only feeding the moved prefetch helper.
11 tests across the two modules pin the orchestration: audio_play
payload + seek-when-near-zero + wantPlaying=false → audio_pause +
generation-mismatch bail + .finally clears the hot-cache gate even
on errors; engine guard + window forwarding + sync-flag for prefetch.
playerStore 2865 → 2779 LOC.
Frank Stellmacher