[BUG] Can't enable Fast mode

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 suddenly can't enable Fast mode anymore:

❯ /fast on

⎿ Fast mode unavailable: Fast mode has been disabled by your organization

Meanwhile, my organization settings haven't changed. (It happened in the middle of me coding, and I'm the only member of my organization, so no one changed the settings out from under me.)

<img width="900" height="363" alt="Image" src="https://github.com/user-attachments/assets/ff4f1724-da16-49ed-8d75-6580fba026cc" />

<img width="900" src="https://github.com/user-attachments/assets/cbe18f37-cabd-43dc-bbeb-6c4493dcb908" />

What Should Happen?

I should be able to enable fast mode.

Error Messages/Logs

Steps to Reproduce

1. Start Claude
2. Try to enable fast mode

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Not sure, perhaps v2.1.50?

Claude Code Version

2.1.59 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

<img width="759" height="597" alt="Image" src="https://github.com/user-attachments/assets/d1fbe49e-008a-40bd-897d-3dab4a0a1913" />