feat(mindspace): 0630004 空间 UI、聊天连接、微信分享与 Agent 能力

含 MindSpace 三列布局与统计修复、聊天加载态与连接降级、平台页脚标记与 og:site_name 微信卡片、勾选资料删除 Agent 接口及内部话术过滤。

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

src/components/ChatView.tsx

@@ -8,6 +8,7 @@ import { BalanceRing } from './BalanceRing';
 import { HistorySidebar } from './HistorySidebar';
 import { TKMindAvatar } from './TKMindAvatar';
 import { ChatPanel } from './ChatPanel';
+import { ChatLoadingSpinner } from './ChatLoadingSpinner';
 import { WechatBindPrompt } from './WechatBindPrompt';
 import { WechatAccountButton } from './WechatAccountButton';
 import { ChatHeaderMoreMenu } from './ChatHeaderMoreMenu';
@@ -90,6 +91,7 @@ export function ChatView({
     setSidebarOpen(false);
   };
 
+  const isConnectingTitle = !session && chatState !== 'idle';
   const sessionTitle = session
     ? getSessionDisplayName(session)
     : chatState === 'idle'
@@ -145,7 +147,10 @@ export function ChatView({
             <TKMindAvatar size="sm" className="header-brand-avatar" />
             <div>
               <div className="header-title">{user?.displayName ?? 'TKMind'}</div>
-              <div className="header-sub">{sessionTitle}</div>
+              <div className="header-sub">
+                {isConnectingTitle ? <ChatLoadingSpinner /> : null}
+                <span>{sessionTitle}</span>
+              </div>
             </div>
           </div>
           <div className="header-actions header-actions-desktop">