chore: auto-commit (28 archivos)

- app.md
- auth.go
- chat.go
- chat.log
- db.go
- frontend/package.json
- frontend/pnpm-lock.yaml
- frontend/src/App.tsx
- frontend/src/Root.tsx
- frontend/src/api.ts
- ...

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/src/Root.tsx

@@ -0,0 +1,17 @@
+import { Center, Loader } from "@mantine/core";
+import { App } from "./App";
+import { useAuth } from "./auth";
+import { LoginPage } from "./components/LoginPage";
+
+export function Root() {
+  const { user, loading } = useAuth();
+  if (loading) {
+    return (
+      <Center style={{ minHeight: "100vh" }}>
+        <Loader />
+      </Center>
+    );
+  }
+  if (!user) return <LoginPage />;
+  return <App />;
+}