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    "final_summary": "Arithmetic mean and population standard deviation (denominator n=5) across the five final logged test_mean values for each game. Descriptive between-run spread, not a confidence interval.",
    "selection_summary": "Arithmetic means and population standard deviations (denominator n=3) of the retained unseen_mean rows within each game/method. The referenced verifier prints integer total / n_seeds, so each retained input is already an integer-truncated batch mean. No significance claim.",
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      "flappy": "pipes",
      "snake": "apples",
      "pacman": "pellets"
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    "evidence_boundary": "These settings describe the committed script, not independently recovered execution manifests for the saved runs.",
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  "limits": [
    "Run labels are parsed from filenames or retained seed fields; source hashes identify saved files, not proof of prospective experimental collection.",
    "Export date is not an experiment execution date. Unrelated dirty visualization files are neither exported nor modified.",
    "Learning curves and selection comparisons are distinct protocols. Their scores must not be combined as one evaluation.",
    "Scores are game-specific and not comparable across games. Population SD summarizes these saved runs only.",
    "No grokking onset, causal explanation, fresh generalization result, or improvement in model quality is asserted."
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}