Implemented a comprehensive notification system with smart deduplication for LayerForge's "Paste Image" operations. The system prevents duplicate error/warning notifications while providing clear feedback for all clipboard operations including success, failure, and edge cases.
Refactored clipspace handling into ClipspaceUtils with validateAndFixClipspace() and safeClipspacePaste() for consistent, defensive logic. Ensures full backward compatibility with all ComfyUI versions and eliminates duplicated code.
Replaces direct usage of document.createElement('canvas') and manual context setup with the createCanvas utility across multiple utility modules. This change improves code consistency, reduces duplication, and centralizes canvas/context creation logic. Also updates notification usage in ClipboardManager to use showNotification and showInfoNotification utilities.
