限定 Autocal 首版为 finger 并验证视频采集路径

明确视频与相机共用采集接口、事件和时间基准；补充针对性回归测试。

shared/tests/test_stream_pipeline_acquisition.py

@@ -250,6 +250,37 @@ def _config(kind: str) -> Path:
     return FINGER_CONFIG if kind == "finger" else BOX_CONFIG
 
 
+@pytest.mark.parametrize("source", ["recording.mp4", 0])
+def test_finger_video_and_camera_use_the_same_packet_path(source, monkeypatch):
+    """Both source forms reach FingerRuntime and publish the same packet contract."""
+    opened: list[str | int] = []
+
+    def open_runtime(cls, **kwargs):
+        opened.append(kwargs["video"])
+        return cls()
+
+    saved = _install()
+    monkeypatch.setattr(_Runtime, "open", classmethod(open_runtime))
+    worker = _worker("finger")
+    packets: list = []
+    try:
+        worker.add_sink(packets.append)
+        worker.start(source, config_ref=FINGER_CONFIG)
+        deadline = time.perf_counter() + 5.0
+        while time.perf_counter() < deadline and not packets:
+            time.sleep(0.02)
+        assert opened == [source]
+        assert packets
+        packet = packets[0]
+        assert packet.raw_frame.shape == (8, 8, 3)
+        assert packet.processed_frame.shape == (8, 8, 3)
+        assert packet.session_id == 1
+        assert packet.frame_id == 0
+    finally:
+        worker.stop(wait=True)
+        _restore(saved)
+
+
 @pytest.mark.parametrize("kind", ["box", "finger"])
 def test_a_stopped_session_leaves_no_pipeline_threads(kind):
     """``stop`` must join the three stages: they own the sensor's tracker state."""