Added components to article

lib/feature/delivery/overview/presentation/delivery_item.dart

@@ -11,12 +11,12 @@ import '../../detail/service/notes_service.dart';
 
 class DeliveryListItem extends StatelessWidget {
   final Delivery delivery;
-  final double distance;
+  final double? distance;
 
   const DeliveryListItem({
     super.key,
     required this.delivery,
-    required this.distance,
+    this.distance,
   });
 
   void _goToDelivery(BuildContext context) {
@@ -59,11 +59,14 @@ class DeliveryListItem extends StatelessWidget {
           "Pausiert",
         );
       case DeliveryState.ongoing:
+        final distanceLabel = distance != null && !distance!.isNaN
+            ? "${distance!.toStringAsFixed(1)} km"
+            : "–";
         return (
           Theme.of(context).colorScheme.surfaceContainerLow,
           Colors.transparent,
           Icons.local_shipping_outlined,
-          "${distance.toStringAsFixed(1)} km",
+          distanceLabel,
         );
     }
   }