{
    "id": "coa-fs-2026-08-03-001",
    "base": "COA-D-20260803-001",
    "date": "2026-08-03",
    "type": "COA Fuel Signal",
    "version": "1.0",
    "city": {
        "name": "札幌",
        "role": "Consumption"
    },
    "delta": {
        "price": "down",
        "supply": "flat",
        "pressure": "down",
        "lag": "flat",
        "silence": "up"
    },
    "trigger": {
        "type": "B",
        "label": "蓄熱"
    },
    "decision": {
        "replenish": "hold",
        "stock": "+1",
        "risk": "medium"
    },
    "silent": "up",
    "tags": [
        "COA",
        "FuelSignal"
    ]
}