Implemented an ESC key handler to allow users to close the fullscreen editor mode using the Escape key. Updated the editor button tooltip and the shortcuts documentation to reflect this new shortcut.
Moved inline CSS from CanvasView.js to a dedicated canvas_view.css file and added dynamic stylesheet loading. Extracted tooltip and shortcut HTML into separate template files and implemented a ResourceManager utility for loading stylesheets and templates. Updated CanvasInteractions.js and CanvasView.js to use the new resource management and template loading approach, improving maintainability and modularity.