feat(map): add edge-center delta stats, thickness overlay, and layout fix

- Add edge-center sensor pair tables and delta calculations per wafer family.
- Parse and interpolate wafer thickness CSV data for offscreen visualization.
- Refactor ReadoutPanel layout using Item + anchors to fix right-margin clipping.
- Compact E-C Delta text format to fit standard sidebar width.
- Add pytest suite covering delta calculations, layout pairs, and thickness CSV.

src/pygui/ISC/Tabs/components/WaferMapView.qml

@@ -9,6 +9,7 @@ Item {
     property bool showLabels: true
     property alias showExtremes: map.showExtremes
     property alias showThickness: map.showThickness
+    property alias hasThickness: map.hasThickness
 
     WaferMapItem {
         id: map
@@ -66,4 +67,8 @@ Item {
     function exportImage(filePath, extra) {
         return map.export_image(filePath, extra || "");
     }
+
+    function loadThickness(filePath) {
+        return map.loadThickness(filePath);
+    }
 }