chore(box): snapshot in-progress auth + user-learning WIP before deploy

Captures uncommitted work present on the live droplet so origin/main can be integrated and the new control toolbar deployed. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/main.tsx

@@ -1,13 +1,24 @@
 import { StrictMode } from 'react';
 import { createRoot } from 'react-dom/client';
+import { ClerkProvider } from '@clerk/react';
+import { shadcn } from '@clerk/ui/themes';
 import App from './App.js';
 import './index.css';
+import '@clerk/ui/themes/shadcn.css';
 import { TooltipProvider } from '@/components/ui/tooltip';
 
+const clerkPublishableKey = import.meta.env.VITE_CLERK_PUBLISHABLE_KEY;
+
+if (!clerkPublishableKey) {
+  throw new Error('Missing VITE_CLERK_PUBLISHABLE_KEY');
+}
+
 createRoot(document.getElementById('root')!).render(
   <StrictMode>
-    <TooltipProvider>
-      <App />
-    </TooltipProvider>
+    <ClerkProvider publishableKey={clerkPublishableKey} appearance={{ theme: shadcn }}>
+      <TooltipProvider>
+        <App />
+      </TooltipProvider>
+    </ClerkProvider>
   </StrictMode>,
 );