后台管理系统基础框架：侧边栏布局、9 个页面模块、共享类型和 API 客户端

frontend/app/ops/system/page.tsx

@@ -0,0 +1,12 @@
+import type { Metadata } from "next";
+import { requireOpsAdmin } from "@/lib/ops-admin";
+import { SystemPageClient } from "@/components/ops/system/SystemPageClient";
+
+export const metadata: Metadata = {
+  title: "系统状态 — PolyWeather Ops",
+};
+
+export default async function SystemPage() {
+  const user = await requireOpsAdmin("/ops/system");
+  return <SystemPageClient />;
+}