docs: remove separate browser compatibility documentation

Integrate browser compatibility info directly into README instead of
separate file for better maintainability.

Co-authored-by: openhands <[email protected]>

Author: openhands-agent

BROWSER_COMPATIBILITY.md

@@ -18,8 +18,6 @@ but only supports remote conversations.
 
 This client is **fully browser-compatible** and works without Node.js dependencies. File operations use browser-native APIs like `Blob`, `File`, and `FormData` instead of file system operations. Perfect for web applications, React apps, and other browser-based projects.
 
-See [BROWSER_COMPATIBILITY.md](./BROWSER_COMPATIBILITY.md) for detailed usage examples.
-
 ## Installation
 
 This package is published to GitHub Packages. You have two installation options: