docs/vercel.json

{
  "$schema": "https://openapi.vercel.sh/vercel.json",
  "framework": null,
  "buildCommand": "npm run docs:build",
  "outputDirectory": ".vitepress/dist",
  "cleanUrls": true,
  "trailingSlash": false,
  "routes": [
    { "handle": "filesystem" },
    { "src": "/.*", "dest": "/404.html", "status": 404 }
  ]
}