scaffold: modern rewrite skeleton (backend + frontend PWA) + roadmap

modern/frontend/src/App.jsx

@@ -0,0 +1,10 @@
+import React from 'react'
+
+export default function App(){
+  return (
+    <div style={{padding:20,fontFamily:'system-ui, sans-serif'}}>
+      <h1>LifeRPG Modern</h1>
+      <p>Welcome — frontend scaffold. Connect to backend at <code>/api/v1</code>.</p>
+    </div>
+  )
+}

modern/frontend/src/main.jsx

@@ -0,0 +1,9 @@
+import React from 'react'
+import { createRoot } from 'react-dom/client'
+import App from './App'
+
+createRoot(document.getElementById('root')).render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+)