chore: add explicit nuxi dependency for ppn

Author: danielroe

playground/package.json

@@ -4,6 +4,7 @@
   "version": "1.0.0",
   "packageManager": "pnpm@9.15.2",
   "dependencies": {
+    "nuxi": "latest",
     "nuxt": "^3.15.1"
   }
 }