docs: Tutorial step 3: opening the Vite URL returns "Cannot find any route matching" #456

import { devframeViteBridge } from '@devframes/vite/single'
import react from '@vitejs/plugin-react'
import { defineConfig } from 'vite'
import dataInspectorFrame from '../src/node/data-inspector.ts'

export default defineConfig({
  base: './', // relative asset URLs, so the built UI works under any mount path
  build: { outDir: '../dist/client', emptyOutDir: true },
  plugins: [
    react(),
    // Vite serves the page; the bridge answers RPC on the same origin, so
    // `connectDevframe()` just finds it. `auth: false`, see the note below.
    devframeViteBridge(dataInspectorFrame, { base: '/', auth: false }),
  ],
})