Implement floating notification for update alerts

- Created an entirely new floating notification system independent of the main UI
- Positioned notification as fixed element attached directly to the body
- Used bright red styling with high contrast to ensure visibility
- Added redundant notification alongside original update alert
- Implemented try/catch blocks for robust error handling
- Added event listeners for update button in floating notification
- Enhanced force show function to handle both notification types
- Applied fixed position and high z-index to ensure visibility
- Added console logging for better debugging

🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>

public/index.html

@@ -687,8 +687,46 @@
             color: #004085 !important;
             font-weight: bold !important;
         }
+        
+        /* Floating update notification that's impossible to miss */
+        #floating-update-notification {
+            display: none;
+            position: fixed;
+            top: 20px;
+            right: 20px;
+            width: 300px;
+            padding: 15px;
+            background-color: #ff5555;
+            color: white;
+            border: 3px solid #cc0000;
+            border-radius: 5px;
+            box-shadow: 0 0 20px rgba(0,0,0,0.5);
+            z-index: 10000;
+            font-weight: bold;
+            text-align: center;
+        }
+        #floating-update-notification button {
+            margin-top: 10px;
+            padding: 5px 10px;
+            background-color: white;
+            color: #cc0000;
+            border: none;
+            border-radius: 3px;
+            font-weight: bold;
+            cursor: pointer;
+        }
+        #floating-update-notification button:hover {
+            background-color: #eeeeee;
+        }
     </style>
     
+    <!-- Floating update notification (outside normal document flow) -->
+    <div id="floating-update-notification">
+        <div>Update Available!</div>
+        <div id="floating-update-version">New version available</div>
+        <button id="floating-update-button">Update Now</button>
+    </div>
+    
     <!-- JavaScript Files -->
     <script src="/js/system-status.js"></script>
     <script src="/js/app.js"></script>