{
  "claim_boundary": "software correctness demonstration; not alpha or market evidence",
  "costs": {
    "borrow_total": 0.0069,
    "commission_total": 0.0781,
    "gross_sharpe": 0.5668,
    "half_spread_total": 0.1562,
    "impact_total": 0.1171,
    "net_sharpe": -0.6753,
    "reconciliation_error": 0.0
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  "execution": {
    "inflation_removed": 21.7121,
    "same_tick_sharpe": 21.886,
    "state_rule": "no fill mutation before scheduled market event",
    "t_plus_1_sharpe": 0.1739
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  "fixture": "deterministic_synthetic_known_ground_truth",
  "leakage": {
    "availability_rule": "available_at <= decision_at",
    "inflation_removed": 20.7004,
    "leaky_sharpe": 20.5276,
    "pit_safe_sharpe": -0.1728,
    "unavailable_rows_blocked": 756
  },
  "observations": 756,
  "schema_version": "microalpha.audit-lab.v1",
  "seed": 20260715,
  "selection": {
    "candidate_count": 128,
    "naive_full_sample_winner": "noise_102",
    "naive_in_sample_sharpe": 1.3802,
    "noise_family_p_value": 0.601,
    "planted_control_p_value": 0.001,
    "test": "centered synchronous max statistic vs zero-return benchmark",
    "walk_forward_oos_sharpe": -1.2781,
    "walk_forward_selected": "noise_089"
  }
}