AI聊天系统的变化，已经不只是生成更流畅。关键的转折，是用户的第一动作从切应用，变成说需求。过去完成订票，常要穿过复杂菜单；现在聊天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，是从内容助手走�

With conversational AI entering more professional environments, their ability to protect information has become an essential condition for adoption. Users may share customer records, workplace messages, and research material during a single interaction. A useful system must therefore do more than automate routine communication. It must also limit u