feat(admin): add system logs viewer, tabbed data management, fix AT20 sync

frontend/src/pages/AdminDashboard.tsx

@@ -11,6 +11,7 @@ import ServiceModeTab from '../components/admin/ServiceModeTab';
 import PermissionMatrixTab from '../components/admin/PermissionMatrixTab';
 import DataManagementTab from '../components/admin/DataManagementTab';
 import FdiskSyncTab from '../components/admin/FdiskSyncTab';
+import SystemLogsTab from '../components/admin/SystemLogsTab';
 import { usePermissionContext } from '../contexts/PermissionContext';
 
 interface TabPanelProps {
@@ -36,7 +37,7 @@ function SubTabs({ labels, children }: { labels: string[]; children: React.React
   );
 }
 
-const ADMIN_TAB_COUNT = 4;
+const ADMIN_TAB_COUNT = 5;
 
 function AdminDashboard() {
   const navigate = useNavigate();
@@ -66,6 +67,7 @@ function AdminDashboard() {
           <Tab label="System Mitteilungen" />
           <Tab label="Tool Zugriff" />
           <Tab label="Daten" />
+          <Tab label="Debug" />
         </Tabs>
       </Box>
 
@@ -85,8 +87,11 @@ function AdminDashboard() {
         </SubTabs>
       </TabPanel>
       <TabPanel value={tab} index={3}>
-        <SubTabs labels={['Datenverwaltung', 'FDISK Sync']}>
-          {[<DataManagementTab />, <FdiskSyncTab />]}
+        <DataManagementTab />
+      </TabPanel>
+      <TabPanel value={tab} index={4}>
+        <SubTabs labels={['FDISK Sync', 'System Logs']}>
+          {[<FdiskSyncTab />, <SystemLogsTab />]}
         </SubTabs>
       </TabPanel>
     </DashboardLayout>