Artifex/gpu_feature_parity_contract_v1_2.md

GPU Batch01 V1.2 Frozen Validation Contract

All 97 observed Batch01 outputs are evaluated against historical_band_channel.

Evidence Classes

• Donchian and PSAR outputs: exact.
• Bollinger and Keltner outputs: bounded by calibration-only limits.
• Supertrend final output, bands, direction, transitions, and branch predicates: exact; ATR uses supplied fixed bounds.

Frozen Coverage

• bollinger: 36
• donchian: 10
• keltner: 36
• psar: 3
• supertrend: 12

Role Status

Unrecovered strategy roles are UNVERIFIABLE_FROM_RECOVERED_SOURCE; they are recorded but are not parity blockers. Role records: 97.