refactor(player): E.42 — migrate playerStore re-exports to direct imports (#607)

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.

src/utils/applySharePaste.ts

@@ -1,8 +1,9 @@
+import { songToTrack } from '../utils/songToTrack';
 import type { NavigateFunction } from 'react-router-dom';
 import type { TFunction } from 'i18next';
 import { getAlbum, getArtist, getSong, type SubsonicSong } from '../api/subsonic';
 import { useAuthStore } from '../store/authStore';
-import { songToTrack, usePlayerStore } from '../store/playerStore';
+import { usePlayerStore } from '../store/playerStore';
 import { findServerIdForShareUrl, type EntitySharePayloadV1 } from './shareLink';
 import { showToast } from './toast';
 

src/utils/buildInfiniteQueueCandidates.test.ts

@@ -6,6 +6,7 @@
  * refactor (2026-05-12). This test pins the artist-first / random-fallback
  * order, the dedup contract against existingIds, and the autoAdded flag.
  */
+import type { Track } from '../store/playerStoreTypes';
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 
 vi.mock('../api/subsonic', () => ({
@@ -26,7 +27,6 @@ import {
   enrichSongsForMixRatingFilter,
   getMixMinRatingsConfigFromAuth,
 } from './mixRatingFilter';
-import type { Track } from '../store/playerStore';
 import { makeSubsonicSong } from '@/test/helpers/factories';
 
 const seed = (overrides: Partial<Track> = {}): Track => ({

src/utils/buildInfiniteQueueCandidates.ts

@@ -1,3 +1,4 @@
+import type { Track } from '../store/playerStoreTypes';
 import { getRandomSongs, getSimilarSongs2, getTopSongs } from '../api/subsonic';
 import {
   enrichSongsForMixRatingFilter,
@@ -6,8 +7,6 @@ import {
 } from './mixRatingFilter';
 import { shuffleArray } from './shuffleArray';
 import { songToTrack } from './songToTrack';
-import type { Track } from '../store/playerStore';
-
 /**
  * Infinite queue source strategy (Instant Mix-like):
  * 1) Prefer artist-driven candidates (Top + Similar) around the current track.

src/utils/luckyMix.ts

@@ -1,3 +1,5 @@
+import type { Track } from '../store/playerStoreTypes';
+import { songToTrack } from '../utils/songToTrack';
 import {
   filterSongsToActiveLibrary,
   getAlbum,
@@ -11,7 +13,7 @@ import {
 import { invoke } from '@tauri-apps/api/core';
 import i18n from '../i18n';
 import { useAuthStore } from '../store/authStore';
-import { songToTrack, usePlayerStore, type Track } from '../store/playerStore';
+import { usePlayerStore } from '../store/playerStore';
 import { useLuckyMixStore } from '../store/luckyMixStore';
 import { isLuckyMixAvailable } from '../hooks/useLuckyMixAvailable';
 import { showToast } from './toast';

src/utils/orbit.ts

@@ -1,3 +1,4 @@
+import { songToTrack } from '../utils/songToTrack';
 import {
   createPlaylist,
   updatePlaylist,
@@ -9,7 +10,7 @@ import {
 } from '../api/subsonic';
 import { useAuthStore } from '../store/authStore';
 import { useOrbitStore } from '../store/orbitStore';
-import { usePlayerStore, songToTrack } from '../store/playerStore';
+import { usePlayerStore } from '../store/playerStore';
 import { encodeSharePayload, decodeOrbitSharePayloadFromText } from './shareLink';
 import {
   makeInitialOrbitState,

src/utils/playAlbum.ts

@@ -1,6 +1,6 @@
 import { getAlbum } from '../api/subsonic';
 import { usePlayerStore } from '../store/playerStore';
-import { songToTrack } from '../store/playerStore';
+import { songToTrack } from './songToTrack';
 import { useOrbitStore } from '../store/orbitStore';
 
 function fadeOut(setVolume: (v: number) => void, from: number, durationMs: number): Promise<void> {

src/utils/playArtistShuffled.ts

@@ -1,6 +1,7 @@
+import { songToTrack } from '../utils/songToTrack';
+import { shuffleArray } from '../utils/shuffleArray';
 import { getAlbum, getArtist } from '../api/subsonic';
-import { shuffleArray, songToTrack, usePlayerStore } from '../store/playerStore';
-
+import { usePlayerStore } from '../store/playerStore';
 /**
  * All tracks from the artist’s albums, shuffled — same idea as Artist page “shuffle play”.
  */

src/utils/playByOpaqueId.ts

@@ -1,8 +1,8 @@
+import { songToTrack } from '../utils/songToTrack';
 import { getAlbum, getSong } from '../api/subsonic';
 import { playAlbum } from './playAlbum';
 import { playArtistShuffled } from './playArtistShuffled';
-import { songToTrack, usePlayerStore } from '../store/playerStore';
-
+import { usePlayerStore } from '../store/playerStore';
 /**
  * `getSong` → `getAlbum` → `getArtist`: one opaque Subsonic id may refer to a track,
  * album, or artist depending on the server.

src/utils/playSong.ts

@@ -1,4 +1,5 @@
-import { usePlayerStore, songToTrack } from '../store/playerStore';
+import { songToTrack } from '../utils/songToTrack';
+import { usePlayerStore } from '../store/playerStore';
 import type { SubsonicSong } from '../api/subsonic';
 
 function fadeOut(setVolume: (v: number) => void, from: number, durationMs: number): Promise<void> {

src/utils/queueIdentity.test.ts

@@ -4,8 +4,8 @@
  * routing through the HTTP source) and the no-op detection in
  * `queuesStructuralEqual` that prevents unnecessary store rewrites.
  */
+import type { Track } from '../store/playerStoreTypes';
 import { describe, expect, it } from 'vitest';
-import type { Track } from '../store/playerStore';
 import {
   normalizeAnalysisTrackId,
   queuesStructuralEqual,

src/utils/queueIdentity.ts

@@ -1,5 +1,4 @@
-import type { Track } from '../store/playerStore';
-
+import type { Track } from '../store/playerStoreTypes';
 /**
  * Strip the `stream:` prefix that some Rust events attach to track ids when
  * they're routed through the HTTP source. Both forms identify the same track,

src/utils/resolveReplayGainDb.test.ts

@@ -5,10 +5,9 @@
  * Originally lived in `playerStore.ts`; extracted in M0 of the frontend
  * refactor (2026-05-12).
  */
+import type { Track } from '../store/playerStoreTypes';
 import { describe, expect, it } from 'vitest';
 import { resolveReplayGainDb } from './resolveReplayGainDb';
-import type { Track } from '../store/playerStore';
-
 describe('resolveReplayGainDb', () => {
   const t = (overrides: Partial<Track> = {}): Track => ({
     id: 'x',

src/utils/resolveReplayGainDb.ts

@@ -1,5 +1,4 @@
-import type { Track } from '../store/playerStore';
-
+import type { Track } from '../store/playerStoreTypes';
 /**
  * Resolve the ReplayGain dB value for a track based on the configured mode.
  * In 'auto' mode, picks album-gain when an adjacent queue neighbour shares the

src/utils/songToTrack.test.ts

@@ -5,9 +5,9 @@
  * playback queue. Originally lived in `playerStore.ts`; extracted in M0 of
  * the frontend refactor (2026-05-12).
  */
+import type { Track } from '../store/playerStoreTypes';
 import { describe, expect, it } from 'vitest';
 import { songToTrack } from './songToTrack';
-import type { Track } from '../store/playerStore';
 import { makeSubsonicSong } from '@/test/helpers/factories';
 
 describe('songToTrack', () => {

src/utils/songToTrack.ts

@@ -1,6 +1,5 @@
+import type { Track } from '../store/playerStoreTypes';
 import type { SubsonicSong } from '../api/subsonic';
-import type { Track } from '../store/playerStore';
-
 export function songToTrack(song: SubsonicSong): Track {
   return {
     id: song.id,