feat：初始化业务目录

src/app/admin/layout.tsx

@@ -0,0 +1,9 @@
+import type { ReactNode } from "react";
+
+export default function AdminSegmentLayout({
+  children,
+}: {
+  children: ReactNode;
+}) {
+  return <div className="flex min-h-full flex-1 flex-col">{children}</div>;
+}