{
  "experiment_name": "test_experiment",
  "dataset_snapshot_id": "test_snapshot_001",
  "description": "Minimal fixture manifest for unit tests.",
  "base_config": "configs/backtest/defaults.json",
  "overrides": {
    "risk": {
      "max_positions": 3,
      "per_trade_risk_pct": 0.02
    }
  },
  "splits": [],
  "tags": ["test"],
  "notes": "Test fixture"
}