Motion capture: profile support, FPS config, persistent tracking, window state

Profile integration:
- CameraDevice.get_save_config() serialises camera_index, simulate,
  resolution, fps — cameras now persist in .labdaq profiles
- ProfileManager.register/unregister_device_factory() lets plugins
  register their device classes for profile restoration without
  core → plugin dependency
- MotionCapturePlugin registers CameraDevice factory on load/unload

Camera configuration:
- Add Frame Rate combo to CameraPanel (Default/15/24/30/60/120 fps)
  defaults to 30 fps; flows through to CAP_PROP_FPS on connect
- tracker.start() accepts fps param alongside existing resolution

Tracking persistence:
- CameraTracker.is_running() — checks thread alive state
- MotionCaptureWindow initialises _connected from tracker.is_running()
  so reopening the window resumes the live feed without restarting
  the camera or losing the active tracking state

Window state:
- Plugin saves px_per_mm + camera_idx when window closes
- Reopened window restores saved values and syncs mode/shape UI
  from tracker state via restore_ui_state() (signals blocked to
  avoid resetting tracker)
- Window type changed to Qt.WindowType.Window for independent
  close button on all Linux WMs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/plugins/motion_capture/camera_panel.py b/plugins/motion_capture/camera_panel.py
index 5e25f7f..279945e 100644
--- a/plugins/motion_capture/camera_panel.py
+++ b/plugins/motion_capture/camera_panel.py
@@ -21,6 +21,15 @@ _RESOLUTIONS = {
     "2560 × 1440": (2560, 1440),
 }
 
+_FPS = {
+    "Default": None,
+    "15 fps":  15,
+    "24 fps":  24,
+    "30 fps":  30,
+    "60 fps":  60,
+    "120 fps": 120,
+}
+
 
 class CameraScanThread(QThread):
     cameras_found = pyqtSignal(list)   # list of (index: int, label: str)
@@ -64,7 +73,14 @@ class CameraPanel(QWidget):
         form.setContentsMargins(0, 0, 0, 0)
         self.res_cb = QComboBox()
         self.res_cb.addItems(list(_RESOLUTIONS.keys()))
+        self.res_cb.setCurrentText("1280 × 720")
         form.addRow("Resolution:", self.res_cb)
+
+        self.fps_cb = QComboBox()
+        self.fps_cb.addItems(list(_FPS.keys()))
+        self.fps_cb.setCurrentText("30 fps")
+        form.addRow("Frame Rate:", self.fps_cb)
+
         lay.addLayout(form)
 
         note = QLabel(
@@ -91,9 +107,11 @@ class CameraPanel(QWidget):
         resolution: Optional[Tuple[int, int]] = _RESOLUTIONS.get(
             self.res_cb.currentText()
         )
+        fps: Optional[int] = _FPS.get(self.fps_cb.currentText())
         return CameraDevice(
             device_id=device_id,
             camera_index=self._selected_index,
             simulate=self._simulate,
             resolution=resolution,
+            fps=fps,
         )