[BUG] Unable to use /advisor on MacOS

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?

I am trying to use the /advisor command so I can use Sonnet as the primary /model and then it can use the /advisor (Opus) when necessary so that I can save on tokens. This works on the linux machines I use, but doesn't work on my Mac.

When I type /advisor, I get unknown command. See the screenshots.

What Should Happen?

I should be able pair Opus to be an advisor for Sonnet

Error Messages/Logs

❯ /model                                                                               
  ⎿  Set model to Sonnet 4.6
                                                                                       
❯ Unknown command: /advisor

Steps to Reproduce

#claude
/advisor

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.121

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

See screenshots for the error message.

Here's the output from /doctor
Diagnostics
├ Currently running: native (2.1.121)
├ Commit: 16ffea721a0a
├ Platform: darwin-arm64
├ Path: /Users/me/.local/share/claude/versions/2.1.121
├ Config install method: native
└ Search: OK (bundled)

Updates
├ Auto-updates: enabled
├ Auto-update channel: latest
├ Stable version: 2.1.112
└ Latest version: 2.1.121

Version locks
└ 2.1.121: PID 10904 (running)

<img width="591" height="218" alt="Image" src="https://github.com/user-attachments/assets/05183ae5-6637-4fb0-91c9-63a986398dbd" />

<img width="617" height="158" alt="Image" src="https://github.com/user-attachments/assets/20a86f2e-50e7-434b-ac1e-af223e605713" />