feat: implement master file configuration, UI indicators, and a Run Comparison tool for the Data tab

src/pygui/backend/visualization/wafer_map_item.py

@@ -347,6 +347,10 @@ class WaferMapItem(QQuickPaintedItem):
             self._thickness_heatmap = None
             return
         field = refine_field(field)
+        # ponytail: RBF overshoots around outlier sensors, inventing values no
+        # sensor produced (e.g. negative diffs when all diffs are positive).
+        # Clamp to the real data range so color only reflects measured values.
+        field = np.clip(field, vs.min(), vs.max())
         if self._shape == "round":
             alpha = ellipse_alpha(*field.shape)
         else:
@@ -467,6 +471,10 @@ class WaferMapItem(QQuickPaintedItem):
             self._heatmap = None
             return
         field = refine_field(field)
+        # ponytail: RBF overshoots around outlier sensors, inventing values no
+        # sensor produced (e.g. negative diffs when all diffs are positive).
+        # Clamp to the real data range so color only reflects measured values.
+        field = np.clip(field, vs.min(), vs.max())
         if self._shape == "round":
             alpha = ellipse_alpha(*field.shape)
         else:
@@ -609,11 +617,11 @@ class WaferMapItem(QQuickPaintedItem):
             font_scale = 0.85
 
         id_font = QFont()
-        id_font.setPointSize(max(4, int(r * font_scale)))
+        id_font.setPointSize(max(9, int(r * font_scale)))
         id_font.setBold(True)
 
         temp_font = QFont()
-        temp_font.setPointSize(max(3, int((r - 1) * font_scale)))
+        temp_font.setPointSize(max(9, int(r * font_scale)))
 
         band_color = {
             "in_range": self._in_range_color,