Added the final components missing from previous commit:
- DebugPanel component (150 lines): Pure client-side debug message management
- DocumentControls component (200 lines): Floating control panel and document actions
These components complete the modular JavaScript architecture refactoring,
providing clean separation of concerns and independent testability.
All components now work together through event-driven communication
while maintaining 100% functionality preservation.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
