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>

conversation-display.mjs

@@ -25,6 +25,36 @@ export function stripMindSpaceContextPrefix(text) {
   return next;
 }
 
+const ASSISTANT_DELIVERABLE_RE =
+  /\[[^\]]+\]\(https?:\/\/[^)]+\)|https?:\/\/(?:m\.)?[^/\s]*tkmind\.(?:cn|ai)\/MindSpace\//i;
+
+const INTERNAL_ASSISTANT_MARKERS = [
+  /data-mindspace-page-tag/i,
+  /mindspace-cover/i,
+  /\bload_skill\b/i,
+  /static-page-publish/i,
+  /\.agents\/skills/i,
+  /SKILL\.md/i,
+  /注意到技能/u,
+  /技能更新/u,
+  /页脚要用.*platform-brand/u,
+];
+
+/** Agent-only process narration that should not appear in the chat UI. */
+export function isInternalAssistantProcessNarration(text) {
+  const trimmed = String(text ?? '').trim();
+  if (!trimmed) return false;
+  if (ASSISTANT_DELIVERABLE_RE.test(trimmed)) return false;
+  return INTERNAL_ASSISTANT_MARKERS.some((pattern) => pattern.test(trimmed));
+}
+
+export function deriveAssistantFacingText(text) {
+  const trimmed = String(text ?? '').trim();
+  if (!trimmed) return '';
+  if (isInternalAssistantProcessNarration(trimmed)) return '';
+  return trimmed;
+}
+
 /** Strip agent-only prefixes from persisted user message content for UI display. */
 export function deriveUserFacingText(text) {
   let next = String(text ?? '');