An Image Upscaler with WebGPU

This ships a tiny 22MB CNN that runs entirely in the browser using WebGPU/ONNX — impressive engineering that delivers instant, private 4x upscaling with a WebAssembly fallback. The UI is minimal but functional (drag-and-drop, GPU/CPU toggle, quantized mode), though the feature set is thin: max 1024px, no batch processing, and little info about model trade-offs or sample comparisons.