add check-format script and use it in CI

.github/workflows/ci.yml

@@ -66,5 +66,5 @@ jobs:
 
     - run: npm ci
     - run: npm run lint
-    - run: npm run format
+    - run: npm run check-format
     

frontend/package.json

@@ -14,7 +14,8 @@
     "lint:oxlint": "oxlint . --fix -D correctness --ignore-path .gitignore",
     "lint:eslint": "eslint . --fix",
     "lint": "run-s lint:*",
-    "format": "prettier --write src/"
+    "format": "prettier --write src/",
+    "check-format": "prettier --check src"
   },
   "dependencies": {
     "@primeuix/themes": "^1.0.0",