Remove LiveKit integration from chat.tsx
- Remove all LiveKit imports (registerGlobals, LiveKitRoom, useVoiceAssistant, etc.)
- Remove VoiceCallTranscriptHandler component
- Remove voice call state management (callState, isCallActive)
- Remove voice call functions (startVoiceCall, endVoiceCall, handleVoiceTranscript)
- Remove LiveKitRoom component from JSX
- Remove debug panel for voice calls
- Clean up unused imports (Clipboard, Animated, expo-keep-awake, useAuth, useVoiceTranscript, useVoiceCall)
- Remove unused styles (voiceButton, callActiveIndicator, debug panel styles)
- Update initial message text to remove voice call references
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Co-Authored-By: Claude <noreply@anthropic.com>