Card: standardized form

Hero video: 30 fps mp4, labeled acts

Hero video: 30 fps mp4, labeled acts

Hero: three acts (appearance, geometry, fog), 384px

v3: geometry gradients (dual-number interior + shadow and camera silhouette edge sampling)

Add hero

Uploaded using `kernel-builder`.

Per-texel albedo textures with bilinear-footprint adjoints

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Per-texel albedo textures with bilinear-footprint adjoints

Uploaded using `kernel-builder`.

Pure-torch BVH build; drop the numpy dependency

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pathtracer-diff v1: differentiable path tracer source tree