WebGPU Strawberry Cake Soft-Body Slicing

An interactive WebGPU web experience called "Strawberry Cake": a Korean/Japanese-style strawberry cream cake that can be pressed, squeezed, grabbed, and thrown, and sliced repeatedly with a knife into multiple pieces, each keeping a soft wobble. The prompt is a long English spec requiring native WebGPU+WGSL, XPBD volumetric soft-body physics, and a tetrahedral mesh, with Three.js and other libraries and external assets disallowed. Suited to stress-relief interactive pages or physics simulation demos.