fix(dashboard): disable text editing on widget re-renders in edit mode

Ensure contenteditable and input fields remain disabled when widgets
are re-rendered during edit mode (e.g., during auto-layout, cross-tab
moves, or tab switches). This prevents text editing from interfering
with drag operations.

Previously, disableContentEditing() was only called when entering edit
mode, so any widgets rendered afterward would have editable fields again.
Now, renderWidgetContent() checks if in edit mode and disables editing
on newly rendered widgets.

src/systems/dashboard/dashboardManager.js

@@ -726,6 +726,22 @@ export class DashboardManager {
         } else {
             console.warn(`[DashboardManager] No render function for ${widget.type}`);
         }
+
+        // If in edit mode, disable content editing on this widget
+        if (this.editManager && this.editManager.isEditMode) {
+            const editableElements = element.querySelectorAll('[contenteditable="true"]');
+            editableElements.forEach(el => {
+                el.dataset.wasEditable = 'true';
+                el.contentEditable = 'false';
+            });
+
+            // Also disable input fields
+            const inputElements = element.querySelectorAll('input, textarea');
+            inputElements.forEach(el => {
+                el.dataset.wasEnabled = el.disabled ? 'false' : 'true';
+                el.disabled = true;
+            });
+        }
     }
 
     /**