fix: Update positionForm to support new StyleAwareEditor class names

- Fix TypeError when accessing form.style by adding fallback selectors
- Support both legacy (.insertr-edit-form) and new editor class names
- Add null checks to prevent crashes when form element is not found
- Ensure ensureModalVisible works with all editor types

Resolves positioning error when opening style-aware editor interface.

lib/src/ui/editor.js

@@ -373,7 +373,16 @@ export class Editor {
      */
     positionForm(element, overlay) {
         const rect = element.getBoundingClientRect();
-        const form = overlay.querySelector('.insertr-edit-form');
+        // Support both old and new editor formats
+        const form = overlay.querySelector('.insertr-edit-form') || 
+                    overlay.querySelector('.insertr-style-aware-editor') || 
+                    overlay.querySelector('.insertr-fallback-editor');
+        
+        if (!form) {
+            console.error('No form element found in overlay for positioning');
+            return;
+        }
+        
         const viewportWidth = window.innerWidth;
         
         // Calculate optimal width
@@ -409,7 +418,16 @@ export class Editor {
      */
     ensureModalVisible(overlay) {
         requestAnimationFrame(() => {
-            const modal = overlay.querySelector('.insertr-edit-form');
+            // Support both old and new editor formats
+            const modal = overlay.querySelector('.insertr-edit-form') || 
+                         overlay.querySelector('.insertr-style-aware-editor') || 
+                         overlay.querySelector('.insertr-fallback-editor');
+            
+            if (!modal) {
+                console.error('No modal element found for visibility check');
+                return;
+            }
+            
             const modalRect = modal.getBoundingClientRect();
             const viewportHeight = window.innerHeight;