- Add voice call button in chat input area
- Implement LiveKit room connection with Julia AI agent
- Create full-screen voice call modal with:
- Visual avatar with speaking indicator
- Call duration timer
- Agent state display (listening/thinking/speaking)
- Hang up button
- Add real-time transcription tracking for voice calls
- Keep screen awake during active calls
- Integrate with existing VoiceTranscriptContext for history
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Co-Authored-By: Claude <noreply@anthropic.com>
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