[BUG] VSCode Extension `/context` command not work

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?

As the issue title say, /context command not work in VSCode Extension.

I'm using:

• 2.1.66 (Claude Code CLI)
• 2.1.66 (Claude Code VSCode Extension)

<img width="469" height="552" alt="Image" src="https://github.com/user-attachments/assets/d7d5d8db-f0da-4436-b46c-c9006c795488" />

What Should Happen?

the /context command should output the used context and reamin context in VSCode panel.

Error Messages/Logs

Steps to Reproduce

1. Open Claude Code VSCode Extension
2. Random type anything
3. run /context
4. the context info don't output

Repro with multiple models (Opus, Sonet, Haiku).

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.66

Platform

AWS Bedrock

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_