fix checkout again

main.go

@@ -249,20 +249,20 @@ func main() {
 				return
 			}
 			cartId := ToCartId(cookie.Value)
-			_, err = syncedServer.pool.Apply(cartId, getCheckoutOrder(r.Host, cartId))
+			order, err = syncedServer.CreateOrUpdateCheckout(r.Host, cartId)
 			if err != nil {
 				w.WriteHeader(http.StatusInternalServerError)
 				w.Write([]byte(err.Error()))
 			}
 			// v2: Apply now returns *CartGrain; order creation handled inside grain (no payload to unmarshal)
 		} else {
-			prevOrder, err := KlarnaInstance.GetOrder(orderId)
+			order, err = KlarnaInstance.GetOrder(orderId)
 			if err != nil {
 				w.WriteHeader(http.StatusBadRequest)
 				w.Write([]byte(err.Error()))
 				return
 			}
-			order = prevOrder
+
 		}
 		w.Header().Set("Content-Type", "text/html; charset=utf-8")
 		w.Header().Set("Permissions-Policy", "payment=(self \"https://js.stripe.com\" \"https://m.stripe.network\" \"https://js.playground.kustom.co\")")