feat: 实时消息与管理端运营能力

新增群聊/私信与公共 WebSocket 总线，站长用户内容档案，并将通知与待审角标改为推送驱动；同步精简管理仪表盘并修复主题换肤 DOM 冲突。

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

frontend/app/post/[id]/page.tsx

@@ -33,7 +33,7 @@ import PostToc, { type TocItem } from "@/components/PostToc";
 import MobilePostBar from "@/components/MobilePostBar";
 import Avatar from "@/components/Avatar";
 import RoleBadge from "@/components/RoleBadge";
-import { isStaff } from "@/lib/roles";
+import { canModerateBoard } from "@/lib/roles";
 import { IconComment, IconEye } from "@/components/Icons";
 
 interface PageProps {
@@ -340,7 +340,7 @@ export default async function PostDetailPage({ params, searchParams }: PageProps
 
   // 非公开帖（待审/未通过）仅作者本人与管理团队可看，顶部给出醒目状态
   const isPublished = post.status === "published";
-  const canSeeStatus = !!me.user && (me.user.id === post.user.id || isStaff(me.user.role));
+  const canSeeStatus = !!me.user && (me.user.id === post.user.id || canModerateBoard(me.user, post.board_id));
 
   const jsonLd = {
     "@context": "https://schema.org",