feat: add guided exploration and share user-started MCP backend

tests/unit/test_plugin_recording.py

@@ -101,6 +101,14 @@ def argument(command, option):
     return command[command.index(option) + 1]
 
 
+def test_software_capture_avoids_first_frame_lookahead_delay(tmp_path):
+    command = build_capture_command(
+        "ffmpeg", source(), RecordingConfig(), tmp_path / "clip.mp4", "libx264"
+    )
+    assert argument(command, "-tune") == "zerolatency"
+    assert argument(command, "-b:v") == "1500k"
+
+
 def test_archive_command_keeps_physical_capture_and_limits_encoded_output(tmp_path):
     command = build_capture_command(
         "ffmpeg", source(), RecordingConfig(), tmp_path / "video.mp4", "libx264"