[BUG] Claude Code CLI chokes on long base64 lines and crashes.

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?

Have a file with a very long line and some MB in size.

Claude Code will choke on it.

What Should Happen?

Claude Code should not choke on it.

Error Messages/Logs

Steps to Reproduce

Just create a file with a very long oneliner.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.5

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_