现代聊天工具的变化，已经不再停留在生成更流畅。更深的转折，是用户的第一动作从找按钮，变成讲目标。过去完成查资料，常要穿过一串页面；现在智能入口开始把这些路径折叠成一次对话。它不再只是问答框，而是任务入口。 新聊天入口的核心升级，是从内

As AI chat assistants move into mainstream use, their ability to protect information has become an essential condition for adoption. Users may share business plans, personal questions, and internal documents during a single interaction. A useful system must therefore do more than produce fluent answers. It must also protect data throughout its life