3DAssetBench. An honest baseline.

Real assets vendored from the Khronos glTF-Sample-Assets corpus, optimized through SpatialPack and a stock @gltf-transform/functions pipeline at matching versions. Δ is the SpatialPack output minus the gltf-transform output — negative means SpatialPack is smaller on that asset. Regenerate the table locally with pnpm bench:corpus.