[BUG] voice mode: Voice stream error: Connection closed: code 1008 — Unsupported language

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?

claude code version 2.1.68

<img width="420" height="199" alt="Image" src="https://github.com/user-attachments/assets/18704b2d-2ac0-41c6-b195-4f182983bf6d" />

What Should Happen?

voice mode should work

Error Messages/Logs

stream error: Connection closed: code 1008 — Unsupported language

Steps to Reproduce

turn on voice mode use /voice
press space

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.68

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

ghostty