One activation row; row-major 2- or 4-bit codes at T 256, decoding through a threadgroup codebook with word-aligned lanes (kernels/trellis/down-codebook.ts): trellisScatter's single-row output bit for bit.
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One activation row; row-major 2- or 4-bit codes at T 256, decoding through a threadgroup codebook with word-aligned lanes (kernels/trellis/down-codebook.ts): trellisScatter's single-row output bit for bit.