[BUG] Claude Code does not reply

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?

writing messages in Code I only see my messages with no reply whatsoever, or "thinking" indication.
the side bar shows thousands of code lines changed, even though there was no actions taken.

<img width="1509" height="898" alt="Image" src="https://github.com/user-attachments/assets/378220e5-044b-416b-bb19-09618a4af764" />

What Should Happen?

obviously react in the chat

Error Messages/Logs

Steps to Reproduce

write a message to Claude Code

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Sonnet 4.6

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_