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commit b244530ee2a6247b5f930830eeca9dd950da0e7e; Python 3.12.3; unmodified simulator; serial in-process; no sandbox or worker pool.","For each seed, sample_config(ChallengeConfig(), ParameterVariance(), seed=seed) is shared by T then CANDIDATE; load_strategy_factory is called anew before each run.","Only the specified ON line differs; both SHA-256 values match the task.","Differences and statistics use unrounded total_edge values. per_seed, worst, and best differences are rounded to six decimal places. SE is sample standard deviation divided by sqrt(n).","Timing measures SimulationEngine construction and run, excluding strategy module loading.","Engine failed/error fields were checked on every run. All non-spread-4 differences are exactly zero."]}