refactor(playback): move thin-state queue resolver out of utils/library into the feature

The queue-resolver family (queueTrackResolver, queueRestore, queueItemRef,
queueTrackView) runtime-imports usePlayerStore / playerStoreTypes — it is the
playback engine's thin-state queue subsystem, not shared library infra. It sat
in utils/library only because it queries the local index. Co-locate into
features/playback/store so those edges become intra-feature; its remaining deps
(advancedSearchLocal, libraryReady, serverLookup, serverIndexKey, authStore) are
plain core/infra (feature -> infra, no inversion).

Removes 4 of the 6 store/utils -> feature runtime inversions that blocked the
utils/library -> lib move. 8 files moved, 46 consumers rewritten. tsc 0, lint 0,
targeted suites green.

src/features/queue/components/QueueHeader.tsx

@@ -9,11 +9,11 @@ import type { QueueDisplayMode } from '@/store/authStoreTypes';
 import type { DurationMode } from '@/utils/componentHelpers/queuePanelHelpers';
 import { formatLongDuration } from '@/lib/format/formatDuration';
 import { formatClockTime } from '@/lib/format/formatClockTime';
-import { resolveQueueTrack } from '@/utils/library/queueTrackView';
+import { resolveQueueTrack } from '@/features/playback/store/queueTrackView';
 import {
   getQueueResolverVersion,
   subscribeQueueResolver,
-} from '@/utils/library/queueTrackResolver';
+} from '@/features/playback/store/queueTrackResolver';
 
 interface Props {
   queue: QueueItemRef[];

src/features/queue/components/QueueList.tsx

@@ -8,11 +8,11 @@ import { useLuckyMixStore } from '@/store/luckyMixStore';
 import type { QueueItemRef, PlayerState } from '@/features/playback/store/playerStoreTypes';
 import type { QueueDisplayMode } from '@/store/authStoreTypes';
 import { formatTrackTime } from '@/lib/format/formatDuration';
-import { resolveQueueTrack } from '@/utils/library/queueTrackView';
+import { resolveQueueTrack } from '@/features/playback/store/queueTrackView';
 import {
   getQueueResolverVersion,
   subscribeQueueResolver,
-} from '@/utils/library/queueTrackResolver';
+} from '@/features/playback/store/queueTrackResolver';
 import { findQueueItemRefIndex } from '@/features/playback/utils/playback/queueIdentity';
 import type { TimelineDisplayRow } from '@/utils/queue/buildTimelineDisplayRows';
 import { findTimelineScrollLocalIndex } from '@/utils/queue/buildTimelineDisplayRows';

src/features/queue/hooks/useQueueTracks.test.ts

@@ -2,7 +2,7 @@ import { describe, it, expect, beforeEach } from 'vitest';
 import { renderHook } from '@testing-library/react';
 import { usePlayerStore } from '@/features/playback/store/playerStore';
 import type { Track } from '@/features/playback/store/playerStoreTypes';
-import { getCachedTrack, _resetQueueResolverForTest } from '@/utils/library/queueTrackResolver';
+import { getCachedTrack, _resetQueueResolverForTest } from '@/features/playback/store/queueTrackResolver';
 import { seedQueue } from '@/test/helpers/factories';
 import { useQueueTrackAt, useCurrentTrack, useQueueItems } from '@/features/queue/hooks/useQueueTracks';
 

src/features/queue/hooks/useQueueTracks.ts

@@ -1,11 +1,11 @@
 import { useMemo, useSyncExternalStore } from 'react';
 import { usePlayerStore } from '@/features/playback/store/playerStore';
 import type { QueueItemRef, Track } from '@/features/playback/store/playerStoreTypes';
-import { resolveQueueTrack } from '@/utils/library/queueTrackView';
+import { resolveQueueTrack } from '@/features/playback/store/queueTrackView';
 import {
   getQueueResolverVersion,
   subscribeQueueResolver,
-} from '@/utils/library/queueTrackResolver';
+} from '@/features/playback/store/queueTrackResolver';
 
 /**
  * Stable queue selectors (queue thin-state). The store is refs-canonical now: