The macOS leg, whose host has a GPU, runs wai-pack-gpu's clippy, its kernels against
their references and its mutants, and wai-pack's fabric differential with the `gpu`
feature, with WAI_PACK_GPU_REQUIRE set so that an absent adapter fails rather than
skips; each step requires its report lines. The paths include wai/wai-pack-gpu. The
test-count floors gain --test=fabric and raise --lib to the target's count.
Co-Authored-By: Claude Opus 5.5 <[email protected]>