[
  {
    "field": "decision_family",
    "meaning": "Derived public buyer/agent decision route, such as corrugated boxes, labels, mailers, bags, film, cushioning, or warehouse supplies."
  },
  {
    "field": "size_band",
    "meaning": "Broad dimensional-volume band derived from public length, width, and height fields when available."
  },
  {
    "field": "dimensional_weight_lb",
    "meaning": "Reference dimensional weight computed as cubic inches divided by 139; not a freight quote."
  },
  {
    "field": "inventory_band",
    "meaning": "Broad inventory band for discovery. Live inventory must be confirmed before buyer handoff."
  }
]