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500 seeds ran both strategies in order candidate then comparator, sequentially in 50-seed chunks, one Python process per chunk, no --sandbox or --workers. Both code hashes verified by script before running. Simulator at the pinned commit unmodified. Strategies were called through a thin pass-through wrapper recording the rival's first quotes; it does not alter state or actions, and the comparator check values reproduced through it. Sums are rounded to 6 decimals in this file; mean_diff and se were computed from unrounded d."}