pub fn w8a8_decode_available(
kernels: &W8a8Kernels,
w: &W8a8Weight,
rows: usize,
scratch: &W8a8Scratch,
) -> boolExpand description
2026-09-28: The “W8A8 available for this layer and shape” hook: the kernels
of w’s layout resolved, rows is in 1..=W8A8_MAX_ROWS, and the scratch
holds the quantized activation. The declared-precision policy decides
whether W8A8 is wanted; this says whether it can run.