[BUG] Claude Code in Claude Desktop needs `/sandbox`.

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?

Claude Code frequently suggests using /sandbox to adjjust settings even though that command doesn't seem to exist in the desktop version of Claude.

What Should Happen?

I'd expect the CLI and Desktop to support the same features, especially if the bot has been trained to suggest using them. (Heh. Also /model which you want me to run below doesn't exist in the desktop app.)

Error Messages/Logs

Steps to Reproduce

Just do something that requires Claude to need to go outside the sandbox.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude 1.1.8359 (64248d) 2026-03-23T22:17:05.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_