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hashes verified by script before running. Check values match the brief. Simulator at b244530 unmodified, serial, in-process, default ChallengeConfig/ParameterVariance (2000 steps), each (seed,strategy) run once. Overall paired diff -0.223 (se 0.417); spread 3 (target) -0.939 (se 1.756), n=119. Python 3.14.4."}