feat: wire ReplayStatsTracker into SessionController + complete GraphView.updateTrend

src/pygui/backend/controllers/session_controller.py

@@ -11,6 +11,7 @@ from pygui.backend.cluster_average import average_clusters, group_sensors_by_rad
 from pygui.backend.data.csv_recorder import CsvRecorder
 from pygui.backend.models.frame import Frame
 from pygui.backend.models.frame_player import FramePlayer, frames_from_wafer_data
+from pygui.backend.models.replay_stats import ReplayStatsTracker
 from pygui.backend.models.sensor_editor import SensorEditor
 from pygui.backend.models.session_model import SessionModel
 from pygui.backend.models.threshold_classifier import ThresholdConfig
@@ -34,6 +35,8 @@ class SessionController(QObject):
     sensorsChanged = Signal()
     loadedFileChanged = Signal()
     clusterAveragingEnabledChanged = Signal()
+    # trend: per-frame avg for live graph
+    trendData = Signal(str)  # JSON array of floats
     # private: marshal a worker-thread frame onto the main thread
     _liveFrame = Signal(object)    # Frame
 
@@ -65,6 +68,7 @@ class SessionController(QObject):
         self._loaded_file: str = ""
         self._cluster_averaging_enabled = False
         self._active_clusters: list[list[int]] = []
+        self._stats_tracker = ReplayStatsTracker()
 
     # ---- properties QML binds to ----
     @Property(str, notify=modeChanged)
@@ -248,6 +252,7 @@ class SessionController(QObject):
             self._active_clusters = group_sensors_by_radius(self._sensors)
         self._player.load(frames)
         self._model.reset()
+        self._stats_tracker.reset()
         self._loaded_file = file_path
         self.loadedFileChanged.emit()
         self.sensorsChanged.emit()
@@ -378,6 +383,7 @@ class SessionController(QObject):
 
         # Clear out any old data from the prev sessions
         self._model.reset()
+        self._stats_tracker.reset()
         self._last = None
         self._last_raw_frame = None
 
@@ -424,6 +430,8 @@ class SessionController(QObject):
     @Slot(object)
     @slot_error_boundary
     def _on_live_frame(self, frame: Frame) -> None:
+        import json
+        self._stats_tracker.track(frame.seq, frame.values)
         # Main thread (queued). Record raw, process edited; mark dirty for repaint.
         self._last_raw_frame = frame
         edited = Frame(seq=frame.seq, time=frame.time,
@@ -432,6 +440,7 @@ class SessionController(QObject):
         if self._recorder.is_recording:
             self._recorder.write(frame)   # always record raw values, never edited
         self._dirty = True
+        self.trendData.emit(json.dumps(self._stats_tracker.get_trend()))
 
     def _flush_repaint(self) -> None:
         if not self._dirty: