Borrow matching axis-1 gate/up weights with the same bit width; M must be 1..4.
Return owned lazy SwiGLU output, retaining the input's leading dimensions.
codebook applies at the measured shape: layers pass the choice they resolved
at construction (qualifiedRepresentations), benches and tests the one they compare.
Borrow matching axis-1 gate/up weights with the same bit width; M must be 1..4. Return owned lazy SwiGLU output, retaining the input's leading dimensions.
codebookapplies at the measured shape: layers pass the choice they resolved at construction (qualifiedRepresentations), benches and tests the one they compare.