dashboard/vercel.json

{
  "rewrites": [
    {
      "source": "/api/(.*)",
      "destination": "https://YOUR_BACKEND_URL.render.com/$1"
    },
    {
      "source": "/ws/(.*)",
      "destination": "wss://YOUR_BACKEND_URL.render.com/ws/$1"
    }
  ],
  "framework": "vite",
  "buildCommand": "npm run build",
  "outputDirectory": "dist"
}