Add inline onclick handler as fallback for admin close button

- Added console logging for debugging
- Increased timeout to 100ms to ensure DOM is ready
- Added preventDefault and stopPropagation
- Included inline onclick as fallback method

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

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

index.html

@@ -5907,7 +5907,11 @@
         setTimeout(() => {
             const adminCloseBtn = document.getElementById('adminCloseBtn');
             if (adminCloseBtn) {
-                adminCloseBtn.addEventListener('click', () => {
+                console.log('Admin close button found, attaching listener');
+                adminCloseBtn.addEventListener('click', (e) => {
+                    console.log('Admin close button clicked');
+                    e.preventDefault();
+                    e.stopPropagation();
                     const adminOverlay = document.querySelector('.admin-panel-overlay');
                     if (adminOverlay) {
                         adminOverlay.classList.remove('active');
@@ -5917,8 +5921,10 @@
                     // Switch back to edit tab
                     switchTab('edit');
                 });
+            } else {
+                console.error('Admin close button not found!');
             }
-        }, 0);
+        }, 100);
 
         // Password dialog
         document.getElementById('passwordSubmit').addEventListener('click', checkPassword);
@@ -6334,7 +6340,7 @@
     <div class="admin-panel-overlay" id="adminOverlay">
         <div class="admin-panel-header">
             <h2>⚙️ Admin Settings</h2>
-            <button class="admin-panel-close" id="adminCloseBtn">×</button>
+            <button class="admin-panel-close" id="adminCloseBtn" onclick="document.querySelector('.admin-panel-overlay').classList.remove('active'); document.getElementById('adminTab').classList.remove('active'); switchTab('edit');">×</button>
         </div>
         <div class="admin-panel-content" id="adminContent">
             <div class="section collapsible" data-section="geocache">