Refactor code structure for improved readability and maintainability

src/pygui/backend/device_controller.py

@@ -26,6 +26,11 @@ from pygui.serialcomm.data_parser import (
 )
 from pygui.serialcomm.device_service import DeviceService
 from pygui.serialcomm.serial_port import WaferInfo
+from pygui.backend.session_controller import SessionController
+# import pygui.backend.wafer_map_item
+
+stream_controller = SessionController()
+# engine.rootContext().setContextProperty("streamController", stream_controller)
 
 log = logging.getLogger(__name__)
 
@@ -88,8 +93,8 @@ class DeviceController(QObject):
             self.statusRestored.emit()
 
         # Marshal worker-thread results onto the Qt main thread.
-        self._detectFinished.connect(self._handle_detect_finished, Qt.QueuedConnection)
-        self._readFinished.connect(self._handle_read_finished, Qt.QueuedConnection)
+        self._detectFinished.connect(self._handle_detect_finished, Qt.ConnectionType.QueuedConnection)
+        self._readFinished.connect(self._handle_read_finished, Qt.ConnectionType.QueuedConnection)
 
     # ---- Properties ----
     @Property(list, notify=portsUpdated)
@@ -504,7 +509,7 @@ class DeviceController(QObject):
         self._settings.last_csv_path = self._last_csv_path
 
         # Save to disk
-        LocalSettings.save_settings(LocalSettings._settings_path(self._data_dir), self._settings)
+        LocalSettings.save_settings(str(LocalSettings._settings_path(self._data_dir)), self._settings)
 
     # ---- Helpers ----
 

src/pygui/backend/local_settings_model.py

@@ -221,7 +221,7 @@ class LocalSettingsModel(QObject):
         self.waferRetriesChanged.emit()
         self._recompute_derived()
 
-    @Property("QVariantMap", notify=mastersChanged)
+    @Property(dict, notify=mastersChanged)
     def masters(self) -> dict[str, str]:
         return dict(self._masters)