完善站点运营设置：分路由管理、登录可见评论、邮件模板内联与关闭注册 SSR。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/app/admin/settings/page.tsx

@@ -1,21 +1,28 @@
 import type { Metadata } from "next";
-import { cookies } from "next/headers";
-import { getMeCached, getPublicSettingsCached } from "@/lib/serverData";
-import { authCookieHeader } from "@/lib/cookies";
-import { isSuperOrOwner } from "@/lib/roles";
-import Forbidden from "../Forbidden";
-import SettingsAdmin from "./SettingsAdmin";
+import { redirect } from "next/navigation";
 
 export const metadata: Metadata = {
   title: "站点设置",
 };
 
-export default async function AdminSettingsPage() {
-  const cookie = authCookieHeader(await cookies());
-  const me = await getMeCached(cookie || undefined);
-  if (!me.user || !isSuperOrOwner(me.user.role)) {
-    return <Forbidden text="站点设置仅超级管理员和站长可操作。" />;
-  }
-  const settings = await getPublicSettingsCached();
-  return <SettingsAdmin initial={settings} />;
+interface PageProps {
+  searchParams: Promise<{ section?: string }>;
+}
+
+const LEGACY: Record<string, string> = {
+  basic: "/admin/settings/basic",
+  content: "/admin/settings/access",
+  security: "/admin/settings/access",
+  access: "/admin/settings/access",
+  mail: "/admin/settings/mail",
+  storage: "/admin/settings/storage",
+  filter: "/admin/settings/filter",
+  maintenance: "/admin/settings/maintenance",
+};
+
+/** /admin/settings 与旧 ?section= 统一跳到子路由 */
+export default async function SettingsIndexPage({ searchParams }: PageProps) {
+  const sp = await searchParams;
+  const raw = typeof sp.section === "string" ? sp.section.trim() : "";
+  redirect(LEGACY[raw] || "/admin/settings/basic");
 }