[BUG] /terminal-setup says can't be run from windows terminal then suggests running in windows terminal

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?

/terminal-setup
⎿  Terminal setup cannot be run from windows-terminal.

This command configures a convenient Shift+Enter shortcut for multi-line prompts.
Note: You can already use backslash (\) + return to add newlines.

To set up the shortcut (optional):

1. Exit tmux/screen temporarily
2. Run /terminal-setup directly in one of these terminals:

• Windows: Windows Terminal
• IDE: VSCode, Cursor, Windsurf
• Other: Ghostty, WezTerm

1. Return to tmux/screen - settings will persist

I'm on windows in Windows Powershell in the Windows Terminal. I guess it's ok if you don't support it but you don't seem to agree with yourself about whether you do. The initial error message says you don't but then under item 2 it says you do.

What Should Happen?

At least don't disagree with yourself, at most support terminal setup on windows terminal

Error Messages/Logs

Steps to Reproduce

Open windows terminal
install claude with npm i -g @anthropic-ai/claude-code
run claude
type /terminal-setup

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.15 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_