add new functional

package.json

@@ -10,7 +10,8 @@
     "build": "ng build",
     "prewatch": "npm run env:sync",
     "watch": "ng build --watch --configuration development",
-    "test": "ng test"
+    "test": "ng test",
+    "lint": "ng lint"
   },
   "private": true,
   "packageManager": "npm@11.6.2",
@@ -35,11 +36,15 @@
     "@angular/build": "^21.2.6",
     "@angular/cli": "^21.2.6",
     "@angular/compiler-cli": "^21.2.0",
+    "@eslint/js": "^10.0.1",
+    "angular-eslint": "21.3.1",
     "dotenv": "^16.4.7",
+    "eslint": "^10.2.0",
     "jsdom": "^28.0.0",
     "less": "^4.6.4",
     "prettier": "^3.8.1",
     "typescript": "~5.9.2",
+    "typescript-eslint": "^8.58.1",
     "vitest": "^4.0.8"
   }
 }