[BUG] "Context low" reporting extremely inaccurate

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?

[BUG] "Context low" reporting extremely inaccurate

What Should Happen?

Context should be usable.

Error Messages/Logs

Steps to Reproduce

Use claude code.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.12

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

<img width="753" height="329" alt="Image" src="https://github.com/user-attachments/assets/31914ad8-916e-460e-af12-5a18a58f7d12" />