added GPR

python_app/gui/controllers/app_window_ui_mixin.py

@@ -2,6 +2,7 @@
 
 Layout is intentionally split into two independent plot surfaces:
 - single `PlotWidget` for B-scan heatmap rendering;
+- single `PlotWidget` for GPR accumulator/annotation rendering;
 - stacked magnitude/phase `PlotWidget`s for pass-through traces.
 
 `_set_plot_mode()` switches between these surfaces via `QStackedWidget`.
@@ -26,6 +27,7 @@ import pyqtgraph as pg
 
 from python_app.gui.controllers.sections import (
     build_data_actions_group,
+    build_gpr_config_group,
     build_hardware_actions_group,
     build_pipeline_group,
     build_preprocess_summary_group,
@@ -72,6 +74,7 @@ class AppWindowUiMixin:
         # We create both upfront and only switch active page at runtime.
         self._plot_stack = QStackedWidget(root)
         self._build_bscan_plot_page()
+        self._build_gpr_plot_page()
         self._build_trace_plot_page()
 
         # Default view on startup is pass-through traces.
@@ -121,6 +124,12 @@ class AppWindowUiMixin:
 
         self._plot_stack.addWidget(self._trace_plots_container)
 
+    def _build_gpr_plot_page(self) -> None:
+        """Create GPR page in plot stack."""
+        self._gpr_plot = pg.PlotWidget(background="#0f141c")
+        self._gpr_plot.showGrid(x=True, y=True, alpha=0.2)
+        self._plot_stack.addWidget(self._gpr_plot)
+
     def _build_settings_toggle(self, root_layout: QHBoxLayout) -> None:
         """Create narrow button used to collapse or show settings panel."""
         self._settings_toggle_button = QPushButton("<")
@@ -182,6 +191,7 @@ class AppWindowUiMixin:
             build_data_actions_group(self),
             build_preprocess_summary_group(self),
             build_processing_group(self),
+            build_gpr_config_group(self),
             build_radar_group(self),
             build_switch_group(self),
         ]
@@ -205,12 +215,16 @@ class AppWindowUiMixin:
     def _set_plot_mode(self, mode: str) -> None:
         """Switch visible plot page according to processing mode.
 
-        `bscan`   -> show `self._bscan_plot` (single heatmap surface)
-        otherwise -> show `self._trace_plots_container` (magnitude + phase)
+        `bscan`   -> show `self._bscan_plot`
+        `gpr`     -> show `self._gpr_plot`
+        otherwise -> show `self._trace_plots_container`
         """
         if mode == "bscan":
             self._plot_stack.setCurrentWidget(self._bscan_plot)
             return
+        if mode == "gpr":
+            self._plot_stack.setCurrentWidget(self._gpr_plot)
+            return
         self._plot_stack.setCurrentWidget(self._trace_plots_container)
 
     @staticmethod