Fix recording artifact readiness race

tests/test_bot.py

@@ -133,6 +133,30 @@ def test_wait_for_file_ready_accepts_valid_wav(tmp_path):
     assert ready is True
 
 
+def test_wait_for_recording_artifacts_ready_accepts_tracks_created_during_wait(tmp_path):
+    meeting = tmp_path / "meeting.wav"
+    meeting.write_bytes(b"not a finalized mixed wav")
+    tracks_dir = tmp_path / "tracks"
+    tracks_dir.mkdir()
+
+    async def create_tracks_later():
+        await asyncio.sleep(0.003)
+        alice = tracks_dir / "track-111.wav"
+        alice.write_bytes(b"alice audio")
+        (tracks_dir / "tracks.json").write_text(
+            '{"tracks":[{"display_name":"Alice","path":"' + str(alice) + '"}]}'
+        )
+
+    async def run_wait():
+        writer = asyncio.create_task(create_tracks_later())
+        try:
+            return await bot.wait_for_recording_artifacts_ready(str(meeting), attempts=20, delay=0.001)
+        finally:
+            await writer
+
+    assert asyncio.run(run_wait()) == "tracks"
+
+
 def test_load_speaker_tracks_resolves_manifest_tracks_next_to_recording(tmp_path):
     meeting = tmp_path / "meeting.wav"
     meeting.write_bytes(b"RIFFdemo")