fix(preview): Symphonia format sniff and ranged stream startup (#1006)

* fix(preview): Symphonia format sniff and cluster member stream URLs

Resolve preview container hints from HTTP headers, Subsonic suffix, and
magic-byte sniff after Symphonia 0.6. Route preview streams through
clusterBrowseServerId like main playback; guard CoverArtImage when the
preview cover ref is still loading.

* fix(preview): adapt Symphonia sniff branch for main without cluster routing

Keep formatSuffix and cover-ref guards from the cluster work; use
buildStreamUrl on the active server instead of clusterBrowseServerId.

* fix(preview): use ranged HTTP so preview starts without full-file download

Open preview via RangedHttpSource when the server supports byte ranges;
fall back to buffered download otherwise. Gate in-memory probe with
ProbeSeekGate so Symphonia 0.6 does not scan the entire file before audio.

* docs: CHANGELOG and credits for preview fix PR #1006

* chore: drop PR #1006 from settings credits (minor fix)

* fix(preview): allow clippy too_many_arguments on audio_preview_play

formatSuffix pushed the Tauri command to 8 args; matches other IPC commands.

src/store/previewStore.test.ts

@@ -200,6 +200,12 @@ describe('previewStore — startPreview', () => {
     expect(state.duration).toBe(30);
   });
 
+  it('passes Subsonic suffix as formatSuffix for Symphonia container hints', async () => {
+    await usePreviewStore.getState().startPreview({ ...song('flac-1'), suffix: 'flac' }, 'albums');
+    const call = invokeMock.mock.calls.find(c => c[0] === 'audio_preview_play');
+    expect(call?.[1]).toMatchObject({ formatSuffix: 'flac' });
+  });
+
   it('starts at 0 when the track is too short to need a mid-track seek', async () => {
     // duration <= previewDuration * 1.5 → start at 0.
     await usePreviewStore.getState().startPreview({ ...song(), duration: 30 }, 'suggestions');
@@ -277,7 +283,7 @@ describe('previewStore — startPreview', () => {
       throw new Error('engine offline');
     });
 
-    await expect(usePreviewStore.getState().startPreview(song('song-2'), 'suggestions')).rejects.toThrow(/engine offline/);
+    await usePreviewStore.getState().startPreview(song('song-2'), 'suggestions');
 
     // Only rolls back when the rolled-back id is still the optimistic one.
     const state = usePreviewStore.getState();