fix second time

frontend/package.json

@@ -7,7 +7,8 @@
     "dev": "vite",
     "build": "vite build",
     "lint": "eslint .",
-    "preview": "vite preview"
+    "preview": "vite preview",
+    "serve": "serve -s dist -l 4173"
   },
   "dependencies": {
     "@emotion/react": "^11.14.0",
@@ -20,7 +21,8 @@
     "react": "^19.2.0",
     "react-chartjs-2": "^5.3.1",
     "react-dom": "^19.2.0",
-    "react-router-dom": "^7.9.5"
+    "react-router-dom": "^7.9.5",
+    "serve": "^14.2.5"
   },
   "devDependencies": {
     "@eslint/js": "^9.39.1",