App reorganization

app/(app)/layout.tsx

@@ -0,0 +1,8 @@
+import type { ReactNode } from "react";
+
+// Signed-in product surfaces (`/create/*`, `/login`, `/profile`) intentionally
+// run without the marketing footer. Per-route chrome (e.g. CreateFlow's own
+// header/footer lockup) is composed in nested layouts.
+export default function AppLayout({ children }: { children: ReactNode }) {
+  return <main className="flex-1">{children}</main>;
+}