近期，Codex、Claude桌面版、Cursor3.0等主流AI Agent产品不约而同采用三栏布局设计，这并非偶然模仿，而是交互模式优化的必然趋势。传统聊天机器人两栏布局仅适合简单问答，而Agent时代AI能自主编程、修改文件、调用工具，用户需直观审查操作结果，因此右侧工作区应运而生。同时，用户使用Agent时间增长，三栏布局减少了频繁切换，提升了效率。
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