[
  {
    "columnName": "itemName",
    "label": "Item Name",
    "type": "text",
    "width": "260px",
    "placeholder": "Enter item description...",
    "required": true
  },
  {
    "columnName": "category",
    "label": "Category",
    "type": "select",
    "width": "180px",
    "options": ["Fasteners", "Raw Materials", "Extrusions", "Electrical"],
    "required": true
  },
  {
    "columnName": "baseUnit",
    "label": "Base Unit",
    "type": "text",
    "width": "120px",
    "placeholder": "e.g. kgs, pcs, boxes"
  },
  {
    "columnName": "openingRate",
    "label": "Opening Rate",
    "type": "text",
    "width": "150px",
    "placeholder": "e.g. 1200.00/kgs"
  },
  {
    "columnName": "inStock",
    "label": "In Stock",
    "type": "checkbox"
  },
  {
    "columnName": "notes",
    "label": "Specifications / Notes",
    "type": "textarea",
    "placeholder": "Enter technical specifications or notes..."
  }
]