Changed tap behavior on the floating call bubble to end the call
instead of maximizing it. Removed the separate small end call button
since it's no longer needed.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Create VoiceCallContext for global voice call state management
- Add FloatingCallBubble component with drag support
- Add minimize button to voice call screen
- Show bubble when call is minimized, tap to return to call
- Button shows active call state with green color
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>