add notes

internal/handlers/response/order_inquiry.go

@@ -28,6 +28,7 @@ type OrderItemResponse struct {
 	Price       float64 `json:"price"`
 	Quantity    int     `json:"quantity"`
 	Subtotal    float64 `json:"subtotal"`
+	Notes       string  `json:"notes"`
 }
 
 func mapToOrderItemResponses(items []entity.OrderItem) []OrderItemResponse {
@@ -113,6 +114,7 @@ func MapToOrderItemResponses(items []entity.OrderItem) []OrderItemResponse {
 			Price:       item.Price,
 			Quantity:    item.Quantity,
 			Subtotal:    item.Price * float64(item.Quantity),
+			Notes:       item.Notes,
 		})
 	}
 	return result