AI 영수증 파서

{
  "merchant": {
    "name": "Coffee Shop Downtown",
    "address": "123 Main St, San Francisco, CA",
    "phone": "(555) 123-4567"
  },
  "transaction_date": "2024-01-15",
  "transaction_time": "14:30",
  "receipt_number": "RCP-2024-001234",
  "line_items": [
    {
      "description": "Cappuccino",
      "quantity": "2",
      "unit_price": "$4.50",
      "total": "$9.00"
    },
    {
      "description": "Blueberry Muffin",
      "quantity": "1",
      "unit_price": "$3.25",
      "total": "$3.25"
    }
  ],
  "subtotal": "$12.25",
  "tax": "$1.10",
  "tip": "$2.50",
  "total": "$15.85",
  "payment_method": "Credit Card",
  "card_last_four": "****1234"
}