Add external location handling to stock movement processes

Distribution/Features/PurchaseReturn/PurchaseReturnService.cs

@@ -104,6 +104,8 @@ public class PurchaseReturnService(
                     FK_ItemId = line.FK_ItemId,
                     FromLocationId = warehouseId,
                     FromLocationType = LocationType.Warehouse,
+                    ToLocationId = StockService.ExternalLocationId,
+                    ToLocationType = LocationType.External,
                     Quantity = line.Quantity,
                     Type = MovementType.PurchaseReturn,
                     ReasonCode = request.Reason,

Distribution/Features/Returns/ReturnService.cs

@@ -120,6 +120,8 @@ public class ReturnService(
                 await stockRepo.AddMovementAsync(new StockMovement
                 {
                     FK_ItemId = line.FK_ItemId,
+                    FromLocationId = StockService.ExternalLocationId,
+                    FromLocationType = LocationType.External,
                     ToLocationId = vehicleId,
                     ToLocationType = LocationType.Vehicle,
                     Quantity = line.Quantity,

Distribution/Features/Ride/RideService.cs

@@ -298,7 +298,8 @@ public class RideService(
                     b.LocationId,
                     b.LocationType,
                     b.Quantity,
-                    b.UpdatedAt)).ToList()));
+                    b.UpdatedAt,
+                    ride.Vehicle?.NumberPlate ?? string.Empty)).ToList()));
         }
 
         var openOrders = await rideRepo.GetActiveOrdersByRouteIdAsync(strandedRide.FK_RouteId);

Distribution/Features/Sale/SaleService.cs

@@ -251,6 +251,8 @@ public class SaleService(
                         FK_ItemId = item.FK_ItemId,
                         FromLocationId = vehicleId.Value,
                         FromLocationType = LocationType.Vehicle,
+                        ToLocationId = StockService.ExternalLocationId,
+                        ToLocationType = LocationType.External,
                         Quantity = item.QuantityFulfilled,
                         Type = MovementType.Sale,
                         ReferenceId = order.Id