- Introduced a new `CANVAS_GUIDE.md` file detailing the Canvas system, including core concepts, usage patterns, and features such as tile painting, selection, and custom overlays.
- Created `CANVAS_REFACTORING_STATUS.md` to summarize the current state of refactoring efforts, including completed tasks and outstanding issues.
- Enhanced `overworld_editor` functionality by implementing critical fixes for rectangle selection and painting, ensuring proper handling of large map boundaries.
- Updated `canvas_utils.h` to include configuration options for rectangle clamping, preventing wrapping issues during tile selection.
- Refactored `canvas.cc` and `canvas.h` to improve method signatures and documentation, facilitating better understanding and usage of the Canvas API.
- Improved overall documentation structure for clarity and ease of access, consolidating multiple files into focused references.
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