{
  "_note": "SAMPLE inventory for the read-only Parts Catalog page (ADR-0010). Stock levels are illustrative; prices mirror data/sample_catalog.json. A part is 'low' when stock <= reorder_at. Live decrement on estimate finalize is an explicit stretch, NOT built.",
  "parts": [
    {
      "key": "capacitor",
      "description": "Dual run capacitor",
      "category": "HVAC",
      "unit": "ea",
      "stock": 42,
      "reorder_at": 15
    },
    {
      "key": "contactor",
      "description": "Compressor contactor",
      "category": "HVAC",
      "unit": "ea",
      "stock": 9,
      "reorder_at": 12
    },
    {
      "key": "refrigerant_r410a",
      "description": "R-410A refrigerant",
      "category": "HVAC",
      "unit": "lb",
      "stock": 6,
      "reorder_at": 20
    },
    {
      "key": "labor",
      "description": "Labor",
      "category": "Service",
      "unit": "hr",
      "stock": 0,
      "reorder_at": 0
    },
    {
      "key": "condenser_fan_motor",
      "description": "Condenser fan motor",
      "category": "HVAC",
      "unit": "ea",
      "stock": 5,
      "reorder_at": 3
    },
    {
      "key": "thermostat",
      "description": "Programmable thermostat",
      "category": "Controls",
      "unit": "ea",
      "stock": 18,
      "reorder_at": 8
    },
    {
      "key": "air_filter",
      "description": "Pleated air filter",
      "category": "HVAC",
      "unit": "ea",
      "stock": 120,
      "reorder_at": 40
    },
    {
      "key": "hard_start_kit",
      "description": "Hard start kit",
      "category": "HVAC",
      "unit": "ea",
      "stock": 4,
      "reorder_at": 6
    }
  ]
}