AI聊天系统的变化，已经正在超越生成更流畅。真正的转折，是用户的起点从翻页面，变成讲目标。过去完成订票，常要穿过多个入口；现在对话框开始把这些路径组织成一条任务链。它不再只是消息窗口，而是任务入口。 这种产品的核心升级，是从问答型AI走向�

As intelligent chat tools become part of everyday digital work, their ability to protect information has become a major operational concern. Users may share private conversations, project data, and professional knowledge during a single interaction. A useful system must therefore do more than pro