[BUG] Voice mode doesn't detect Spanish

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?

When I activate /voice mode and speak in English it works great. But if I speak in Spanish it says no speech detected. I used Claude Code to debug it and it says it should work because the speech recognition service is cloude-based and not related to the machine locale? (btw, I'm using Ubuntu 24 and yes, my locale is en_US).

What Should Happen?

Claude should detect voice in Spanish.

Error Messages/Logs

Steps to Reproduce

1. activate /voice mode
2. speak in Spanish
3. no speech detected

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.69

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Other

Additional Information

_No response_