Add fallback to 2D loader in DICOM 3D setup on viewport enable failure

anatomy/static/js/anatomy.js

@@ -554,7 +554,22 @@ async function setUpDicom3d(element) {
       //viewportType: Enums.ViewportType.STACK, // Stack viewport for slice stacks
     };
 
+    try {
       renderingEngine.enableElement(viewportInput);
+    } catch (err) {
+      // Some bundlings / integrations (dv3d wrapper) may reject the provided
+      // viewport type (e.g. "Viewport is not a valid type"). In that case
+      // fall back to the 2D cornerstone loader which is more permissive.
+      console.warn('renderingEngine.enableElement failed, falling back to 2D loader:', err);
+      try {
+        dicomViewer.loadCornerstone($(element), null, images, undefined, images.length > 5);
+        element._cornerstone3d = { fallback: 'cornerstone2d', imageCount: images.length };
+        return element._cornerstone3d;
+      } catch (err2) {
+        console.error('2D fallback after enableElement failure also failed:', err2);
+        throw err;
+      }
+    }
 
     const viewport = renderingEngine.getViewport(viewportId);