fix: 问问微信恢复引用编号，日报修复成员头像与 hero 溢出

- 问问微信：Host 分配稳定 citationId 并注入模型上下文，正文 [E#] 与证据按钮同号
- 问问微信：回答返回前校验引用，幻觉编号移除并提示，不再出现不可信的引用按钮
- Agent Hub：收紧「最近会话」快捷路由，内容查询交回 Query Agent

tests/typecheck-baseline.json

@@ -1,11 +1,10 @@
 {
   "note": "测试文件类型检查基线：只允许下降，不允许上升。用 node scripts/typecheck-tests.cjs --update 下调。",
-  "total": 258,
+  "total": 240,
   "files": {
     "tests/component/ai-model-settings.test.tsx": 2,
     "tests/component/ai-search-cache-consent.test.tsx": 3,
     "tests/component/ai-search-knowledge-status-hook.test.tsx": 1,
-    "tests/component/ai-search-query-agent.test.tsx": 18,
     "tests/component/ai-search-run-hook.test.tsx": 1,
     "tests/component/ai-search-workspace-regression.test.tsx": 4,
     "tests/component/database-connection.test.tsx": 2,