docs: add GitHub stars badge to README

Author: daniel-lxs

README.md

@@ -4,6 +4,7 @@
   <a href="https://youtube.com/@roocodeyt?feature=shared"><img src="https://img.shields.io/badge/YouTube-FF0000?style=flat&logo=youtube&logoColor=white" alt="YouTube"></a>
   <a href="https://discord.gg/roocode"><img src="https://img.shields.io/badge/Join%20Discord-5865F2?style=flat&logo=discord&logoColor=white" alt="Join Discord"></a>
   <a href="https://www.reddit.com/r/RooCode/"><img src="https://img.shields.io/badge/Join%20r%2FRooCode-FF4500?style=flat&logo=reddit&logoColor=white" alt="Join r/RooCode"></a>
+  <a href="https://github.com/RooCodeInc/Roo-Code"><img src="https://img.shields.io/github/stars/RooCodeInc/Roo-Code?style=flat&logo=github&color=yellow" alt="GitHub Stars"></a>
 </p>
 <p align="center">
   <em>Get help fast → <a href="https://discord.gg/roocode">Join Discord</a> • Prefer async? → <a href="https://www.reddit.com/r/RooCode/">Join r/RooCode</a></em>
@@ -35,7 +36,7 @@
 - [简体中文](locales/zh-CN/README.md)
 - [繁體中文](locales/zh-TW/README.md)
 - ...
-  </details>
+    </details>
 
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