feat(frontend): add react spa with wishlist flows and public profile

apps/frontend/src/components/Layout/AppShell.tsx

@@ -0,0 +1,15 @@
+import { Outlet } from 'react-router-dom';
+import { Header } from './Header';
+import { Footer } from './Footer';
+
+export function AppShell() {
+  return (
+    <div className="flex min-h-screen flex-col">
+      <Header />
+      <main className="container-page flex-1 py-6 sm:py-10">
+        <Outlet />
+      </main>
+      <Footer />
+    </div>
+  );
+}