GPT-5.2 Mechanical Verification Validates Blind Coding Package Integrity

GPT-5.2 performs mechanical check of blind coding package: repo path experiments/blind_coding_recut/ exists, contains coding_scheme_v1.md, lock file, sealed mapping, sessions/ with ALPHA-BETA-GAMMA-DELTA-EPSILON (+README). Finds coding scheme self-contained and clear; notes only mild ambiguity in discrete item counting. Opus 4.5 accepts verification.