- Updated index.html to enhance UI with new elements for hidden shapes and catalog CSVs.
- Changed download button to a button element for better accessibility.
- Modified server.js to improve API endpoints:
- Renamed overlays endpoint to scene for clarity.
- Updated tile rendering endpoints to use atlas instead of tile coordinates.
- Added new endpoint for downloading shape catalog CSV files.
- Removed unused options in build creation.
- Update tile rendering to support both PNG and WebP formats.
- Introduce a loading spinner and progress bar for build feedback.
- Remove the manual build button; builds now trigger automatically on map selection.
- Add a phase plan document outlining future improvements and goals.
