feat: add admin authenticator 2FA and configurable login email alerts

package.json

@@ -28,7 +28,10 @@
     "lucide-react": "^1.61.0",
     "motion": "^14.6.0",
     "next": "^16.4.3",
+    "nodemailer": "^10.2.1",
+    "otpauth": "^9.5.2",
     "postgres": "^3.4.9",
+    "qrcode": "^1.5.4",
     "react": "^19.3.1",
     "react-dom": "^19.3.1",
     "sharp": "^0.35.5",
@@ -38,9 +41,13 @@
   "devDependencies": {
     "@playwright/test": "^1.64.1",
     "@types/node": "^26.6.5",
+    "@types/nodemailer": "^8.0.2",
+    "@types/qrcode": "^1.5.6",
     "@types/react": "^19.3.0",
     "@types/react-dom": "^19.3.0",
+    "@types/smtp-server": "^3.5.13",
     "prettier": "^3.9.10",
+    "smtp-server": "^3.21.1",
     "typescript": "^7.0.2",
     "vitest": "^5.0.5"
   }