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/utils/message.ts

@@ -1,7 +1,7 @@
 import type { Message, MessageContent } from '../types';
 import { mergeMessageContent } from '../../message-stream.mjs';
 import { mergeConversationSnapshot as mergeConversationSnapshotCore } from '../../chat-finish-sync.mjs';
-import { deriveUserFacingText } from '../../conversation-display.mjs';
+import { deriveUserFacingText, deriveAssistantFacingText } from '../../conversation-display.mjs';
 import { stripUserAddressPrefix } from './userAddress';
 
 const IMAGE_URL_LINE_RE = /^\[图片\d+]: (.+)$/;
@@ -182,12 +182,22 @@ export function getDisplayText(message: Message): string {
     return stripImageUrlLines(deriveUserFacingText(raw));
   }
   if ('displayText' in message.metadata) {
-    return stripImageUrlLines(message.metadata.displayText ?? '');
+    return stripImageUrlLines(deriveAssistantFacingText(message.metadata.displayText ?? ''));
   }
   const systemText = getSystemNotificationText(message);
   if (systemText) return systemText;
   const visible = getVisibleText(message);
-  return visible;
+  return stripImageUrlLines(deriveAssistantFacingText(visible));
+}
+
+export function shouldShowChatMessage(message: Message): boolean {
+  if (message.role === 'user') return true;
+  if (getDisplayText(message).trim()) return true;
+  if (getThinking(message)) return true;
+  if (getSystemNotificationText(message)) return true;
+  return message.content.some(
+    (item) => item.type === 'toolRequest' || item.type === 'toolResponse' || item.type === 'actionRequired',
+  );
 }
 
 export function pushMessage(messages: Message[], incoming: Message): Message[] {