feat(stats): add v1 immersion stats dashboard (#19)

stats/src/main.tsx

@@ -0,0 +1,20 @@
+import { StrictMode } from 'react';
+import { createRoot } from 'react-dom/client';
+import '@fontsource-variable/geist';
+import '@fontsource-variable/geist-mono';
+import { App } from './App';
+import './styles/globals.css';
+
+const isOverlay = new URLSearchParams(window.location.search).has('overlay');
+if (isOverlay) {
+  document.body.classList.add('overlay-mode');
+}
+
+const root = document.getElementById('root');
+if (root) {
+  createRoot(root).render(
+    <StrictMode>
+      <App />
+    </StrictMode>,
+  );
+}