refactor: reorganize backend modules into sub-packages for models, data, visualization, wafer, and controllers

src/pygui/backend/models/__init__.py

@@ -0,0 +1,19 @@
+# ===== Models Sub-package =====
+from pygui.backend.models.frame import Frame
+from pygui.backend.models.frame_player import FramePlayer, frames_from_wafer_data
+from pygui.backend.models.frame_stats import Stats, compute_stats
+from pygui.backend.models.session_model import SessionModel, SessionUpdate
+from pygui.backend.models.data_model import TemperatureTableModel
+from pygui.backend.models.sensor_editor import SensorEditor
+from pygui.backend.models.threshold_classifier import ThresholdConfig, classify, resolve_bounds
+from pygui.backend.models.stability_detector import StabilityDetector
+
+__all__ = [
+    "Frame", "FramePlayer", "frames_from_wafer_data",
+    "Stats", "compute_stats",
+    "SessionModel", "SessionUpdate",
+    "TemperatureTableModel",
+    "SensorEditor",
+    "ThresholdConfig", "classify", "resolve_bounds",
+    "StabilityDetector",
+]