[BUG] Keyboard shortcut labels in '?' overlay use Windows/Linux key names on macOS (alt instead of option)

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?

Environment: macOS (tested on Darwin 25.5.0), Claude Code CLI

Actual behavior:
Labels display Windows/Linux naming convention (e.g., alt + p), which is inconsistent with macOS conventions and can confuse users unfamiliar with the alt = option equivalence

Additional context:
The shortcuts function correctly — this is purely a display/labeling issue. macOS users expect option in keyboard shortcut references, consistent with how Apple and most macOS applications document their shortcuts.

What Should Happen?

Expected behavior:
Shortcut labels should use macOS-native key names (e.g., option + p)

Error Messages/Logs

Steps to Reproduce

Steps to reproduce:

1. Open Claude Code in the terminal on macOS
2. Press ? to open the shortcuts overlay

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.181 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_