[BUG] Notification auto setting not working 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?

The claude code notification setting does not work on macOS when set to auto. One has to manually set it to terminal bell (echo -e "\a")

What Should Happen?

bell go ring

Error Messages/Logs

Steps to Reproduce

see above

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

latest

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

VS Code integrated terminal

Additional Information

zsh with ohmyzsh