Fix admin close button by deferring event listener attachment

- Admin panel HTML is created after JavaScript runs
- Used setTimeout to defer event binding until DOM is ready- Close button now properly attaches and functions

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

index.html

@@ -5903,20 +5903,22 @@
         document.getElementById('navTab').addEventListener('click', () => switchTab('navigate'));
         document.getElementById('adminTab').addEventListener('click', () => switchTab('admin'));
 
-        // Admin overlay close button
-        const adminCloseBtn = document.getElementById('adminCloseBtn');
-        if (adminCloseBtn) {
-            adminCloseBtn.addEventListener('click', () => {
-                const adminOverlay = document.querySelector('.admin-panel-overlay');
-                if (adminOverlay) {
-                    adminOverlay.classList.remove('active');
-                }
-                // Remove active class from admin tab
-                document.getElementById('adminTab').classList.remove('active');
-                // Switch back to edit tab
-                switchTab('edit');
-            });
-        }
+        // Admin overlay close button - defer to ensure DOM element exists
+        setTimeout(() => {
+            const adminCloseBtn = document.getElementById('adminCloseBtn');
+            if (adminCloseBtn) {
+                adminCloseBtn.addEventListener('click', () => {
+                    const adminOverlay = document.querySelector('.admin-panel-overlay');
+                    if (adminOverlay) {
+                        adminOverlay.classList.remove('active');
+                    }
+                    // Remove active class from admin tab
+                    document.getElementById('adminTab').classList.remove('active');
+                    // Switch back to edit tab
+                    switchTab('edit');
+                });
+            }
+        }, 0);
 
         // Password dialog
         document.getElementById('passwordSubmit').addEventListener('click', checkPassword);