doc: changed

README.md

@@ -24,7 +24,12 @@
   <a href="README.zh.md">简体中文</a>
 </p>
 
-[![OpenCode Terminal UI](docs/screenshot.png)](https://vibebox.robcholz.com)
+VibeBox is a lightweight, ultra-fast sandbox that lets AI agents run commands, modify files, and execute code freely
+without permission prompts. It is completely isolated using Apple's Virtualization Framework, so your actual system
+stays
+safe with minimal memory and disk usage.
+
+[![VibeBox Terminal UI](docs/screenshot.png)](https://vibebox.robcholz.com)
 
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README.zh.md

@@ -24,7 +24,10 @@
   <a href="README.md">English</a>
 </p>
 
-[![OpenCode Terminal UI](docs/screenshot.png)](https://vibebox.robcholz.com)
+VibeBox 是一个轻量、启动极快的沙盒环境，让 AI Agent 可以直接跑命令、改文件、执行代码，不会不停弹“要不要允许”的提示。它基于
+Apple 的 Virtualization Framework 做到彻底隔离，所以无论 Agent 在里面怎么折腾，你的真实系统都不会被影响；同时做到了低内存和磁盘占用。
+
+[![VibeBox Terminal UI](docs/screenshot.png)](https://vibebox.robcholz.com)
 
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