{
  "activity": {
    "source": "synthetic Garmin-shaped fixture; not a Garmin API response",
    "status": "stale",
    "steps": null
  },
  "estimate": null,
  "macro_kcal_check": 2220,
  "mode": "offline_fixture_demo",
  "model": {
    "calls": 0,
    "mode": "deterministic_mock"
  },
  "next_action": "Review the synthetic report; no training or dietary prescription is generated.",
  "nutrition": {
    "carbs": 260.0,
    "fat": 80.0,
    "k_mg": 1700.0,
    "kcal": 2220.0,
    "na_mg": 1200.0,
    "protein": 115.0
  },
  "report_date": "2024-03-15",
  "synthetic": true,
  "warnings": []
}