transformers

fd5ecc07 - [contracts proof] cpu-arm64 baselines: reproduce failures on a Mac

[contracts proof] cpu-arm64 baselines: reproduce failures on a Mac Copied unchanged from model-integration-contracts (recorded on an Apple M5, merged there in f5b6b79). Checked on a Mac: the branch gives 7 pass + Whisper xfail as in CI, and proof-d-umt5-revert fails with CI's deltas (UMT5 label_logprobs 1.22, training.loss 0.204). Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>