feat: add ads/sponsor/captcha modules and polish home & chat UI

frontend/app/admin/ads/page.tsx

@@ -0,0 +1,56 @@
+import type { Metadata } from "next";
+import { Suspense } from "react";
+import { cookies } from "next/headers";
+import AdsAdmin from "./AdsAdmin";
+import { authCookieHeader } from "@/lib/cookies";
+import {
+  fetchAdminAds,
+  fetchAdminAdsConfig,
+  fetchAdminSponsorsConfig,
+  type AdConfig,
+  type AdRecord,
+  type SponsorsConfig,
+} from "@/lib/api";
+import { getMeCached } from "@/lib/serverData";
+import { isAdminOrAbove } from "@/lib/roles";
+import Forbidden from "../Forbidden";
+
+export const metadata: Metadata = {
+  title: "推广与赞助",
+};
+
+export default async function AdminAdsPage() {
+  const cookie = authCookieHeader(await cookies());
+  const me = await getMeCached(cookie || undefined);
+  if (!me.user || !isAdminOrAbove(me.user.role)) {
+    return <Forbidden text="推广与赞助管理仅管理员及以上角色可操作。" />;
+  }
+
+  let ads: AdRecord[] = [];
+  let cfg: AdConfig | null = null;
+  let sponsors: SponsorsConfig | null = null;
+  let initError = "";
+  try {
+    const [list, config, sp] = await Promise.all([
+      fetchAdminAds(cookie || undefined),
+      fetchAdminAdsConfig(cookie || undefined),
+      fetchAdminSponsorsConfig(cookie || undefined),
+    ]);
+    ads = list.ads ?? [];
+    cfg = config;
+    sponsors = sp;
+  } catch (e) {
+    initError = e instanceof Error ? e.message : "加载失败";
+  }
+
+  return (
+    <Suspense fallback={<p className="meta px-1 py-6">加载中…</p>}>
+      <AdsAdmin
+        initialAds={ads}
+        initialConfig={cfg}
+        initialSponsors={sponsors}
+        initError={initError}
+      />
+    </Suspense>
+  );
+}