[BUG] Rust panic bei UTF-8 Emoji-Handling

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

• Tritt auf bei Emojis (⏳, ❌) in Markdown-Dateien
• Error: "byte index 2 is not a char boundary"

What Should Happen?

no error

Error Messages/Logs

Steps to Reproduce

..

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.76

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_