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in-process, no sandbox or workers. Fresh loader.load_strategy_factory for each run, BASE then CANDIDATE with the same sampled config and seed. All aggregates and extrema use unrounded paired differences; per_seed differences rounded to six decimals. retail_diff and arb_diff are paired mean differences. check_values lists BASE total_edge for seeds 700000, 700001, 700002, 700003 in order. seconds_per_simulation includes strategy loading and engine execution, excludes configuration sampling and result writing. seeds.end is inclusive."}