Scene Editor

📋 Changelog

• Added performance benchmark page comparing single canvas vector render vs. multi-canvas DOM compositing.
• Added real-time metrics: FPS, JS draw duration, DOM node counts, and resolution.
• Added setting sliders for entities count (22-1000), animations, bounds, and caching.

• Integrated WYSIWYG scene layout editor (drag, scale, rotate, export).
• Added OffscreenCanvas buffer raster cache to main loop.

• Initial release of 2D parametric vector curve portal.