feat(frontend): bootstrap React + Vite + Tailwind + Router + Layout

packages/frontend/vite.config.ts

@@ -0,0 +1,11 @@
+import react from '@vitejs/plugin-react';
+import { defineConfig } from 'vite';
+
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    port: 5173,
+    proxy: { '/api': 'http://localhost:3000' },
+  },
+  test: { environment: 'jsdom', setupFiles: ['./src/test-setup.ts'] },
+});