{
  "checked_at_utc": "2026-11-06T11:10:22.409377+00:00",
  "case_count": 23,
  "common_sessions": 4741,
  "annual_review_count": 19,
  "monthly_engine_replay_max_dollar_error": 4.0745362639427185e-10,
  "future_price_perturbation_pre2020_errors": {
    "policy": 0.0,
    "momentum_same_pool": 0.0,
    "momentum_original_pool": 0.0
  },
  "max_self_financing_error": 6.984919309616089e-09,
  "month_starts": 227,
  "limitations": "Windows retrospective research, not Linux replay, clean out-of-sample, paper trading or production deployment. Source/date audit does not remove model historical knowledge.",
  "unit_tests": {
    "command": "python -m unittest test_engine -v",
    "result": "8 passed, observed during this turn",
    "test_file_sha256": "6557546005a19e64f875446a1dda841014070ec07e3feffd6c9a4906bea04323",
    "topics": [
      "next-year and February lag",
      "future source rejection",
      "monthly accounting",
      "same-close return exclusion",
      "lagged momentum",
      "no history backfill",
      "missing dates rejection",
      "merge SPY exposures"
    ]
  }
}