Account for tab bar height (60px) when calculating maximum Y position
for the draggable bubble. Previously the bubble could be dragged over
the tab bar navigation, now it stays above it.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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>
