Mark Fulfillment as Delivered

curl -X POST 'http://localhost:9000/vendor/orders/order_01HXYZABCDEF/fulfillments/ful_01HXYZABCDEF/mark-as-delivered' \
  -H 'Authorization: Bearer <token>' \
  -H 'x-seller-id: <seller_id>'

const { order } =
  await client.vendor.orders.$id.fulfillments.$fulfillment_id.markAsDelivered.mutate({
    $id: "order_01HXYZABCDEF",
    $fulfillment_id: "ful_01HXYZABCDEF",
  })

{
  "order": {
    "id": "order_01HXYZABCDEF",
    "display_id": 42,
    "status": "pending",
    "fulfillments": [
      {
        "id": "ful_01HXYZABCDEF",
        "shipped_at": "2026-06-04T10:00:00.000Z",
        "delivered_at": "2026-06-06T09:30:00.000Z"
      }
    ]
  }
}