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    {
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    "nEntriesPost": 11,
    "nSnapshotsPre": 11,
    "nSnapshotsPost": 10,
    "nTrades": 28,
    "nTradesPre": 15,
    "nTradesPost": 13
  },
  "methodology": {
    "eraDefinition": "The season is split into a pre-handover era (the outgoing model) and a post-handover era (the incoming model) on a single account; both eras share the same account, capital, and open positions at the boundary.",
    "boundaryRule": "A decision entry, equity snapshot, or trade with timestamp >= the handover boundary belongs to the POST era; everything earlier is PRE. The inherited book is the set of open positions at the LAST pre-handover equity snapshot.",
    "feeAndRealizedRule": "Fees and realized P&L per era are deltas of the cumulative totalFeesPaid / realizedPnL fields between the last snapshot of the era and the last snapshot before it (the pre era baseline is zero, so the pre era includes amounts already embedded in its first snapshot). Era return is first-to-last snapshot equity of the era; max drawdown is the worst peak-to-trough decline across the era snapshots.",
    "fateRule": "A position is \"closed\" when the first realizing trade (realizedPnL != null) on its symbol after the tracking point exists; its realized P&L is reported only when the trade size matches the tracked position size within the relative tolerance, otherwise realizedPnl is null with a reason. A position present in the latest snapshot with the same symbol and side is \"open\" with that snapshot's unrealized P&L. Anything else is \"untraceable\" — no P&L is ever fabricated.",
    "relativeSizeTolerance": 0.01,
    "decisionToTradeToleranceMs": 600000,
    "sources": [
      "data/decision-history/{modelId}.json (per-cycle decision entries)",
      "data/active/equity-history.json (per-account cycle snapshots: equity, cumulative fees, cumulative realized P&L, open positions)",
      "data/trading-state.json (executed trades filtered to the account)"
    ]
  }
}