fix(replay): serve admitted AI overlays without revalidation

tests/test_rrd_export.py

@@ -683,6 +683,10 @@ def test_export_preserves_every_decodable_frame_and_source_timeline(tmp_path: Pa
     assert summary["first_decoded_time_ns"] == 600_000_000
     assert summary["last_decoded_time_ns"] == 1_700_000_000
     assert summary["source_sha256"] == _sha256(capture)
+    repeated = export_k1mqtt_to_rrd(capture, tmp_path / "session-repeated.rrd")
+    assert repeated["recording_id"] == summary["recording_id"]
+    assert summary["recording_id"].startswith("k1-")
+    assert len(summary["recording_id"]) == 67
     assert summary["rrd_bytes"] == output.stat().st_size
     assert summary["rrd_sha256"] == _sha256(output)
     assert output.stat().st_size > 0