Voice troubleshooting agent with a spoken yes/no approval gate

A real run recorded on a local LiveKit server, with sound. The agent diagnoses a slow laptop and a broken business-app sync through a helper app on the user's machine, asks before every change, and rolls one back on request.

• Two-way voice over LiveKit Agents: Groq Whisper speech-to-text, gpt-oss-120b, Kokoro text-to-speech
• Helper app joins only after the user consents and connects outbound, so no ports open on the user's machine
• Fixes live in a modular library (diagnose, apply, rollback); adding a fix means adding one script
• The approval gate is enforced in code: the AI cannot apply anything until the user says a clear "yes". Anything else cancels.
• Every step is logged with before and after state, and any change can be rolled back

The caller's voice is scripted text-to-speech so the run is repeatable. The demo machine is sandboxed: the helper can only touch its own demo folder.