Fix task refresh after work order close

Keep the linked work order visible in task details and force-refresh tasks immediately after work order changes so the dashboard table updates without a hard refresh.

frontend/src/components/dashboard/FleetDashboardShell.jsx

@@ -566,10 +566,17 @@ export default function FleetDashboardShell({ initialSection = 'dashboard', page
     }, [serviceRecords, selectedTask?.id]);
     const selectedTaskWorkOrders = useMemo(() => {
         if (!selectedTask) return [];
-        // Only open work orders in the dropdown — closed ones cannot receive new tasks.
+        // Keep dropdown focused on open work orders, but preserve the task's already assigned
+        // work order even when it is closed so the reference remains visible/editable in task details.
         // Cross-crane sharing allowed: no vehicle filter.
+        const selectedWorkOrderId = String(selectedTask.work_order || '');
         return [...workOrders]
-            .filter((order) => String(order.status || '').toLowerCase() !== 'closed')
+            .filter((order) => {
+                const orderId = String(order.id || '');
+                const isClosed = String(order.status || '').toLowerCase() === 'closed';
+                if (!isClosed) return true;
+                return selectedWorkOrderId && orderId === selectedWorkOrderId;
+            })
             .sort((a, b) => String(b.date || '').localeCompare(String(a.date || '')));
     }, [selectedTask, workOrders]);
 
@@ -614,7 +621,7 @@ export default function FleetDashboardShell({ initialSection = 'dashboard', page
             await updateWorkOrder(workOrder.id, changes);
             showToast('Nalog je uspješno ažuriran.', 'success');
             await fetchFleetDashboardData({ silent: true });
-            await fetchTasks();
+            await fetchTasks({ force: true });
         } catch (error) {
             showToast(error?.message || 'Ažuriranje naloga nije uspjelo.', 'error');
         }