another step just a little remaining

client/package.json

@@ -7,11 +7,13 @@
     "dev": "next dev",
     "build": "next build",
     "format": "prettier ./ --write",
-    "lint": "next lint",
+    "lint": "eslint .",
+    "lint:fix": "eslint . --fix",
     "start": "next start",
     "test": "jest --watch",
     "test:ci": "jest --ci",
-    "type": "tsc"
+    "type": "tsc --noEmit",
+    "check": "npm run type && npm run lint"
   },
   "dependencies": {
     "@emotion/cache": "^11.14.0",
@@ -35,6 +37,7 @@
     "stylis-plugin-rtl": "^2.1.1"
   },
   "devDependencies": {
+    "@eslint/eslintrc": "^3.3.5",
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.2",
     "@testing-library/user-event": "^14.6.1",
@@ -43,8 +46,9 @@
     "@types/node": "^25.9.3",
     "@types/react": "^19.2.17",
     "@types/react-dom": "^19.2.3",
-    "eslint": "latest",
-    "eslint-config-next": "latest",
+    "eslint": "^9.39.4",
+    "eslint-config-next": "^16.2.9",
+    "eslint-config-prettier": "^10.1.8",
     "jest": "latest",
     "jest-environment-jsdom": "latest",
     "next-router-mock": "latest",