security + reponsive

package.json

@@ -6,6 +6,8 @@
   "scripts": {
     "start": "node backend/server.js",
     "dev": "nodemon backend/server.js",
+    "test": "node --test",
+    "check": "node --check backend/server.js && node --check public/js/app.js && npm audit",
     "build:css": "tailwindcss -c tailwind.config.js -i ./public/css/tailwind.css -o ./public/css/main.css --minify",
     "watch:css": "tailwindcss -c tailwind.config.js -i ./public/css/tailwind.css -o ./public/css/main.css --watch"
   },
@@ -17,15 +19,20 @@
   ],
   "author": "",
   "license": "MIT",
+  "engines": {
+    "node": ">=22.0.0"
+  },
   "dependencies": {
     "bcrypt": "^6.0.0",
     "cors": "^2.8.5",
     "dotenv": "^16.3.1",
-    "express": "^4.18.2",
-    "mssql": "^9.1.1",
-    "multer": "^2.1.1",
-    "nodemailer": "^8.0.4",
-    "xlsx": "^0.18.5"
+    "express": "^5.2.1",
+    "express-rate-limit": "^8.6.0",
+    "helmet": "^8.3.0",
+    "mssql": "^12.7.0",
+    "multer": "^2.2.0",
+    "nodemailer": "^9.0.3",
+    "xlsx": "https://cdn.sheetjs.com/xlsx-0.20.3/xlsx-0.20.3.tgz"
   },
   "devDependencies": {
     "@tailwindcss/container-queries": "^0.1.1",