load prev state

cmd/checkout/klarna-handlers.go

@@ -257,7 +257,7 @@ func (a *CheckoutPoolServer) getGrainFromKlarnaOrder(ctx context.Context, order
 	if !ok {
 		return nil, fmt.Errorf("invalid cart id in order reference: %s", order.MerchantReference1)
 	}
-	grain, err := a.Get(ctx, uint64(cartId))
+	grain, err := a.getAnywhere(ctx, uint64(cartId))
 	if err != nil {
 		return nil, fmt.Errorf("failed to get cart grain: %w", err)
 	}

cmd/checkout/main.go

@@ -79,6 +79,11 @@ func main() {
 			grainSpawns.Inc()
 
 			ret := checkout.NewCheckoutGrain(id, 0, 0, time.Now(), nil) // version to be set later
+			// Load persisted events/state for this checkout if present
+			if err := diskStorage.LoadEvents(ctx, id, ret); err != nil {
+				// Return the grain along with error (e.g., not found) so callers can decide
+				return ret, err
+			}
 			return ret, nil
 		},
 		Destroy: func(grain actor.Grain[checkout.CheckoutGrain]) error {