feat: add issue kanban/attachments/deadlines, dashboard widget DnD, and checklisten system

frontend/src/pages/FahrzeugDetail.tsx

@@ -77,7 +77,9 @@ import {
 import type { AusruestungListItem } from '../types/equipment.types';
 import { AusruestungStatus, AusruestungStatusLabel } from '../types/equipment.types';
 import { usePermissions } from '../hooks/usePermissions';
+import { usePermissionContext } from '../contexts/PermissionContext';
 import { useNotification } from '../contexts/NotificationContext';
+import FahrzeugChecklistTab from '../components/fahrzeuge/FahrzeugChecklistTab';
 
 // ── Tab Panel ─────────────────────────────────────────────────────────────────
 
@@ -880,6 +882,7 @@ function FahrzeugDetail() {
   const { id } = useParams<{ id: string }>();
   const navigate = useNavigate();
   const { isAdmin, canChangeStatus, canManageMaintenance } = usePermissions();
+  const { hasPermission } = usePermissionContext();
   const notification = useNotification();
 
   const [vehicle, setVehicle]     = useState<FahrzeugDetailType | null>(null);
@@ -1035,6 +1038,7 @@ function FahrzeugDetail() {
             />
             <Tab label="Einsätze" />
             <Tab label={`Ausrüstung${vehicleEquipment.length > 0 ? ` (${vehicleEquipment.length})` : ''}`} />
+            {hasPermission('checklisten:view') && <Tab label="Checklisten" />}
           </Tabs>
         </Box>
 
@@ -1071,6 +1075,12 @@ function FahrzeugDetail() {
           <AusruestungTab equipment={vehicleEquipment} vehicleId={vehicle.id} />
         </TabPanel>
 
+        {hasPermission('checklisten:view') && (
+          <TabPanel value={activeTab} index={4}>
+            <FahrzeugChecklistTab fahrzeugId={vehicle.id} />
+          </TabPanel>
+        )}
+
         {/* Delete confirmation dialog */}
         <Dialog open={deleteDialogOpen} onClose={() => !deleteLoading && setDeleteDialogOpen(false)}>
           <DialogTitle>Fahrzeug löschen</DialogTitle>