feat: Add real-time notification center with WebSocket integration

- Add in-app notification system with database storage
- Implement bell icon component with unread count badge in dashboard header
- Add full Notifications page tab with pagination and filtering (All/Unread/Read)
- Implement real-time WebSocket push notifications to all connected clients
- Add notification API endpoints: GET, PUT /read, DELETE, POST /clear
- Fix critical bug in notificationService where 'status' variable was undefined
- Add Notifications route to App.js routing
- Enhanced UI with notification popup in header and dedicated full-page view
- Auto-reconnect WebSocket with 5s timeout on disconnect
- Support rich notification content with resource details and timestamps

package.json

@@ -12,22 +12,28 @@
     "build:commit": "npm run build && git add -f client/build/ && git commit -m \"Auto-commit built React app\" && git push",
     "install-all": "npm install && cd client && npm install"
   },
-  "keywords": ["monitoring", "uptime", "alerts", "dashboard"],
+  "keywords": [
+    "monitoring",
+    "uptime",
+    "alerts",
+    "dashboard"
+  ],
   "author": "",
   "license": "MIT",
   "dependencies": {
-    "express": "^4.18.2",
-    "cors": "^2.8.5",
-    "better-sqlite3": "^9.2.2",
-    "node-cron": "^3.0.3",
     "axios": "^1.6.2",
-    "nodemailer": "^6.9.7",
+    "better-sqlite3": "^9.2.2",
+    "cors": "^2.8.5",
     "dotenv": "^16.3.1",
+    "express": "^4.18.2",
+    "jsonwebtoken": "^9.0.3",
+    "node-cron": "^3.0.3",
+    "nodemailer": "^6.9.7",
     "ping": "^0.4.4",
     "ws": "^8.17.1"
   },
   "devDependencies": {
-    "nodemon": "^3.0.2",
-    "concurrently": "^8.2.2"
+    "concurrently": "^8.2.2",
+    "nodemon": "^3.0.2"
   }
 }