fix(voice): queue split TTS segments after pause without replacing track

Detect consecutive tts_auto items on the same assistant bubble via listKey (uuid_seg_n / uuid_part_n). When paused, skip the 'clear queue and play latest only' path so later segments enqueue instead of wiping playback. Add regression test.

Co-authored-by: Cursor <cursoragent@cursor.com>

app-expo/tests/features/voice/use-player.test.tsx

@@ -207,4 +207,47 @@ describe('usePlayer', () => {
     expect(play.mock.calls.length).toBeGreaterThan(playCountAfterFirst);
     expect(result.current.currentSource).toBe('file:///latest.mp3');
   });
+
+  test('after pause, next uuid_seg tts_auto queues without replacing current (multi-segment TTS)', async () => {
+    const aid = '78b32c06-d2f9-453b-9cc4-354e68fbcb2d';
+    mockUseAudioPlayerStatus.mockReturnValue({
+      isLoaded: true,
+      playing: false,
+      currentTime: 0.1,
+      duration: 10,
+    });
+    const pause = jest.fn();
+    const play = jest.fn();
+    mockUseAudioPlayer.mockReturnValue({ pause, play });
+
+    const { result } = renderHook(() => usePlayer());
+
+    await act(async () => {
+      await result.current.enqueue({
+        uri: 'file:///seg0.mp3',
+        kind: 'tts_auto',
+        messageRef: { listKey: `${aid}_seg_0` },
+      });
+    });
+
+    expect(result.current.status).toBe('playing');
+    expect(result.current.currentSource).toBe('file:///seg0.mp3');
+
+    act(() => {
+      result.current.pausePlayback();
+    });
+    expect(result.current.status).toBe('paused');
+
+    await act(async () => {
+      await result.current.enqueue({
+        uri: 'file:///seg1.mp3',
+        kind: 'tts_auto',
+        messageRef: { listKey: `${aid}_seg_1` },
+      });
+    });
+
+    expect(result.current.status).toBe('paused');
+    expect(result.current.currentSource).toBe('file:///seg0.mp3');
+    expect(result.current.queueLength).toBe(1);
+  });
 });