{"key":"ma-fresh-3","idea":"Measure-only: MA (C) vs B_RC (K) on fresh seeds 921000..921499, paired, per competitor spread; spread-1 difference is 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all seeds)"},"notes":"Simulator b244530, default config, 2000 steps, single process, no --workers/--sandbox. All 4 K check values match. d=C-K. Overall +0.113\u00b10.221 (n=500). By spread: s1 +1.443\u00b10.783 n=119 wins MA; s2 -0.930\u00b10.252 n=126 wins B_RC; s3 +0.015\u00b10.354 n=135 wins MA; s4 +0.000\u00b10.000 n=120 wins tie(d=0 all seeds). Spread-1 diff is P's. Winner=sign of mean; only s2 exceeds 2se. No tuning, no code changes."}