fix(studio): 消除 Finger 实时采集的帧排队

实时处理相机最新帧，并修复重复采样、数组快照和暂停恢复。通过共享模块及相关 Studio 测试。

shared/tests/test_stream_pipeline_acquisition.py

@@ -283,6 +283,8 @@ def test_finger_video_and_camera_use_the_same_packet_path(source, monkeypatch):
         assert opened == [source]
         assert packets
         packet = packets[0]
+        assert packet.valid
+        assert packet.force_calibrated
         assert packet.raw_frame.shape == (8, 8, 3)
         assert packet.processed_frame.shape == (8, 8, 3)
         assert packet.session_id == 1
@@ -300,20 +302,25 @@ def test_finger_video_and_camera_use_the_same_packet_path(source, monkeypatch):
         _restore(saved)
 
 
-@pytest.mark.parametrize("kind", ["box", "finger"])
-def test_a_stopped_session_leaves_no_pipeline_threads(kind):
+@pytest.mark.parametrize(
+    "kind, source", [("box", "0"), ("finger", "recording.mp4"), ("finger", 0)]
+)
+def test_a_stopped_session_leaves_no_pipeline_threads(kind, source):
     """``stop`` must join the three stages: they own the sensor's tracker state."""
     packets: list = []
     saved = _install()
     worker = _worker(kind)
     try:
         worker.add_sink(packets.append)
-        worker.start("0", config_ref=_config(kind))
+        worker.start(source, config_ref=_config(kind))
         deadline = time.perf_counter() + 5.0
         while time.perf_counter() < deadline and not packets:
             time.sleep(0.02)
         assert packets, "the session published nothing to stop"
-        assert _pipeline_threads(), "the fake session did not start the pipeline"
+        if kind == "finger" and source == 0:
+            assert _pipeline_threads() == []
+        else:
+            assert _pipeline_threads(), "the fake session did not start the pipeline"
         worker.stop(wait=True)
         deadline = time.perf_counter() + 5.0
         while time.perf_counter() < deadline and _pipeline_threads():