- Removed CalculateAreaGroup and computeArea function as they were no longer needed.
- Updated Floor2DInstance and Zone2DInstance to calculate area and centroid using new utility functions.
- Refactored WallInstances to include Floor2D rendering and improved area display.
- Cleaned up imports and ensured consistent formatting across files.
- Enhanced performance by memoizing calculations for area and centroid.
- Removed deprecated state management for rooms and version history visibility.
