"""Parity tests: MLX decoder heads vs PyTorch reference (Phase 2). Uses saved backbone features → runs MLX decoder → compares against saved PyTorch coarse predictions. """ import pytest pytestmark = pytest.mark.skip(reason="Phase 2: MLX decoder not yet implemented") def test_alpha_decoder_parity() -> None: """MLX alpha decoder matches PyTorch within tolerance.""" ... def test_fg_decoder_parity() -> None: """MLX foreground decoder matches PyTorch within tolerance.""" ...