Fixed 'Add Section' button to properly activate drawing mode

index.html

@@ -2191,8 +2191,21 @@
         // --- Variant Management UI ---
         window.startNewPath = (id) => {
             const layer = routeLayers[id];
-            if (layer && layer.editor) {
+            if (layer) {
-                layer.editor.newPath();
+                // Activate drawing state
+                state.isDrawing = true;
+                state.isMeasuring = false;
+                updateToolCursors();
+                
+                // Ensure edit mode is on
+                if (!layer.editor) layer.enableEdit();
+                
+                // Trigger new path drawing
+                if (layer.editor) {
+                    layer.editor.newPath();
+                } else {
+                    console.error("Editor not found on layer", id);
+                }
             }
         };