feat: implement DTW comparison, add data segmentation and persistence, and update QML UI for file imports and graphing.

src/pygui/__main__.py

@@ -44,9 +44,20 @@ def main() -> int:
     engine.rootContext().setContextProperty("deviceController", device_controller)
 
     # ===== Session Controller (live/review wafer dashboard) =====
-    stream_controller = SessionController()
+    raw_settings_dict = raw_settings.__dict__.copy() if hasattr(raw_settings, '__dict__') else {}
+    stream_controller = SessionController(settings=raw_settings_dict)
     engine.rootContext().setContextProperty("streamController", stream_controller)
 
+    # Persist session state back to settings when it changes
+    def _persist_session_settings():
+        session_state = stream_controller.collect_settings()
+        for k, v in session_state.items():
+            if hasattr(raw_settings, k):
+                setattr(raw_settings, k, v)
+        LocalSettings.save_settings(data_dir, raw_settings)
+
+    stream_controller.settingsChanged.connect(_persist_session_settings)
+
     # ===== QML Startup =====
     # The "ISC" QML module lives alongside this file (src/pygui/ISC), so the
     # package directory is the import path the engine searches for qmldir.