[BUG] /btw handler doesn't see the images

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?

Images are not received with /btw handler on my end. Details below.

❯ claude --version
2.1.287 (Claude Code)

<img width="947" height="160" alt="Image" src="https://github.com/user-attachments/assets/53904c43-cd10-4f07-ab88-344b3b0b3ccd" />

What Should Happen?

/btw should be able to see the images.

Error Messages/Logs

Steps to Reproduce

1. run /btw
2. attach image

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.287 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Warp

Additional Information

_No response_