{"key": "s3-midsize-b", "idea": "d-s3-mid-size-up: larger desired size at rival level at middle probabilities, spread 3, vs comparator N", "candidate_sha256": "1317a49c96f2085e904ffdf7e19ba0d968e30f3f0019a404586c42316602248e", "comparator_sha256": "bf0d179f3e47d28819f6fa7e0d25548c2ced43374c216d36460b00a26a26ffae", "seeds": {"start": 431000, "end": 431499}, "n": 500, "complete": true, "missing_seeds": [], "failures": [], "check_values": [17.116002, 20.017111, 2.390311, 241.484752], "python_version": "3.12.3", "seconds_per_simulation": 0.559, "overall": {"n": 500, "sum_d": 22.110275, "sum_d2": 96.045378, "mean_diff": 0.04422054903759989, "se": 0.019520057940022296, "comparator_mean": 90.7981984582868, "candidate_mean": 90.8424190073244, "retail_diff": 0.10119866377779374, "arb_diff": -0.0569781147419981}, "by_spread": {"1": {"n": 120, "sum_d": 0.0, "sum_d2": 0.0, "mean_diff": 0.0, "se": 0.0, "comparator_mean": 47.845470400452506, "candidate_mean": 47.845470400452506, "retail_diff": 0.0, 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0.0], [431489, 2, 0.0], [431490, 1, 0.0], [431491, 1, 0.0], [431492, 3, 0.232219], [431493, 3, 0.697327], [431494, 1, 0.0], [431495, 1, 0.0], [431496, 4, 0.0], [431497, 1, 0.0], [431498, 1, 0.0], [431499, 2, 0.0]], "notes": "Sim commit b244530 unmodified, default config, single process. Both hashes verified before running. N check values reproduced. s=competitor spread_ticks; first rival quote gap equalled 2s-1 on all seeds. One record per strategy per seed, no failures."}