Voice mode broken on Linux after upgrade to 2.1.83

Description

Voice mode (/voice) stopped working entirely after upgrading from 2.1.81 to 2.1.83 on Linux. Neither custom keybindings nor the default space push-to-talk trigger recording.

Steps to reproduce

1. Upgrade to 2.1.83
2. Run /voice to enable voice mode
3. Hold space (default) or any custom voice keybinding — nothing happens

Expected behavior

Holding the push-to-talk key should start recording audio and transcribing speech, as it did in 2.1.81.

Actual behavior

No recording starts. Voice mode appears enabled (/voice toggles on) but push-to-talk is completely unresponsive.

Environment

• Working version: 2.1.81
• Broken version: 2.1.83
• Platform: Linux x64 (Ubuntu, kernel 6.17.0-19-generic)
• Terminal: PyCharm integrated terminal
• Audio tools: sox/rec and arecord available
• Config: voiceEnabled: true in settings.json, custom keybindings.json with alt+v (also tested without custom keybindings)