feat(geplante-nachrichten): scheduled message rule engine with bot delivery, admin UI, and manual trigger

frontend/src/components/admin/ModuleSettingsIssues.tsx

@@ -136,8 +136,8 @@ export default function ModuleSettingsIssues() {
   });
   const deleteStatusMut = useMutation({
     mutationFn: (id: number) => issuesApi.deleteStatus(id),
-    onSuccess: () => { queryClient.invalidateQueries({ queryKey: ['issue-statuses'] }); showSuccess('Status deaktiviert'); },
-    onError: () => showError('Fehler beim Deaktivieren'),
+    onSuccess: () => { queryClient.invalidateQueries({ queryKey: ['issue-statuses'] }); showSuccess('Status gelöscht'); },
+    onError: () => showError('Fehler beim Löschen'),
   });
 
   // ── Priority mutations ──
@@ -153,8 +153,8 @@ export default function ModuleSettingsIssues() {
   });
   const deletePrioMut = useMutation({
     mutationFn: (id: number) => issuesApi.deletePriority(id),
-    onSuccess: () => { queryClient.invalidateQueries({ queryKey: ['issue-priorities'] }); showSuccess('Priorität deaktiviert'); },
-    onError: () => showError('Fehler beim Deaktivieren'),
+    onSuccess: () => { queryClient.invalidateQueries({ queryKey: ['issue-priorities'] }); showSuccess('Priorität gelöscht'); },
+    onError: () => showError('Fehler beim Löschen'),
   });
 
   // ── Type mutations ──
@@ -170,8 +170,8 @@ export default function ModuleSettingsIssues() {
   });
   const deleteTypeMut = useMutation({
     mutationFn: (id: number) => issuesApi.deleteType(id),
-    onSuccess: () => { queryClient.invalidateQueries({ queryKey: ['issue-types'] }); showSuccess('Kategorie deaktiviert'); },
-    onError: () => showError('Fehler beim Deaktivieren'),
+    onSuccess: () => { queryClient.invalidateQueries({ queryKey: ['issue-types'] }); showSuccess('Kategorie gelöscht'); },
+    onError: () => showError('Fehler beim Löschen'),
   });
 
   const flatTypes = useMemo(() => {

frontend/src/components/admin/ToolSettingsNextcloud.tsx

@@ -16,6 +16,8 @@ import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import { usePermissionContext } from '../../contexts/PermissionContext';
 import { useNotification } from '../../contexts/NotificationContext';
 import { toolConfigApi } from '../../services/toolConfig';
+import type { ToolConfig } from '../../types/toolConfig.types';
+import { scheduledMessagesApi } from '../../services/scheduledMessages';
 
 export default function ToolSettingsNextcloud() {
   const queryClient = useQueryClient();
@@ -28,11 +30,16 @@ export default function ToolSettingsNextcloud() {
   });
 
   const [url, setUrl] = useState('');
+  const [botUsername, setBotUsername] = useState('');
+  const [botAppPassword, setBotAppPassword] = useState('');
   const [testResult, setTestResult] = useState<{ success: boolean; message: string; latencyMs: number } | null>(null);
 
   useEffect(() => {
     if (data) {
       setUrl(data.url ?? '');
+      const d = data as unknown as Record<string, unknown>;
+      setBotUsername((d.bot_username as string) ?? '');
+      setBotAppPassword((d.bot_app_password as string) ?? '');
     }
   }, [data]);
 
@@ -45,6 +52,19 @@ export default function ToolSettingsNextcloud() {
     onError: () => showError('Fehler beim Speichern der Konfiguration'),
   });
 
+  const saveBotMutation = useMutation({
+    mutationFn: () =>
+      toolConfigApi.update('nextcloud', {
+        bot_username: botUsername,
+        bot_app_password: botAppPassword,
+      } as unknown as Partial<ToolConfig>),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['tool-config', 'nextcloud'] });
+      showSuccess('Bot-Konfiguration gespeichert');
+    },
+    onError: () => showError('Fehler beim Speichern der Bot-Konfiguration'),
+  });
+
   const testMutation = useMutation({
     mutationFn: () =>
       toolConfigApi.test('nextcloud', { url: url || undefined }),
@@ -61,58 +81,108 @@ export default function ToolSettingsNextcloud() {
   }
 
   return (
-    <Card>
-      <CardContent>
-        <Typography variant="h6" sx={{ mb: 1 }}>Nextcloud</Typography>
-        <Divider sx={{ mb: 2 }} />
+    <Stack spacing={3}>
+      <Card>
+        <CardContent>
+          <Typography variant="h6" sx={{ mb: 1 }}>Nextcloud</Typography>
+          <Divider sx={{ mb: 2 }} />
 
-        {!isFeatureEnabled('nextcloud') && (
-          <Alert severity="warning" sx={{ mb: 2 }}>
-            Dieses Werkzeug befindet sich im Wartungsmodus.
-          </Alert>
-        )}
+          {!isFeatureEnabled('nextcloud') && (
+            <Alert severity="warning" sx={{ mb: 2 }}>
+              Dieses Werkzeug befindet sich im Wartungsmodus.
+            </Alert>
+          )}
 
-        <Stack spacing={2}>
-          <TextField
-            label="URL"
-            value={url}
-            onChange={(e) => setUrl(e.target.value)}
-            size="small"
-            fullWidth
-            placeholder="https://nextcloud.example.com"
-          />
-
-          <Box sx={{ display: 'flex', gap: 2, alignItems: 'center', flexWrap: 'wrap' }}>
-            <Button
-              variant="contained"
+          <Stack spacing={2}>
+            <TextField
+              label="URL"
+              value={url}
+              onChange={(e) => setUrl(e.target.value)}
               size="small"
-              onClick={() => saveMutation.mutate()}
-              disabled={saveMutation.isPending}
-            >
-              Speichern
-            </Button>
-            <Button
-              variant="outlined"
-              size="small"
-              onClick={() => {
-                setTestResult(null);
-                testMutation.mutate();
-              }}
-              disabled={testMutation.isPending}
-            >
-              {testMutation.isPending ? <CircularProgress size={18} sx={{ mr: 1 }} /> : null}
-              Verbindung testen
-            </Button>
-            {testResult && (
-              <Chip
-                label={testResult.success ? `Verbunden (${testResult.latencyMs}ms)` : `Fehler: ${testResult.message}`}
-                color={testResult.success ? 'success' : 'error'}
+              fullWidth
+              placeholder="https://nextcloud.example.com"
+            />
+
+            <Box sx={{ display: 'flex', gap: 2, alignItems: 'center', flexWrap: 'wrap' }}>
+              <Button
+                variant="contained"
                 size="small"
-              />
-            )}
-          </Box>
-        </Stack>
-      </CardContent>
-    </Card>
+                onClick={() => saveMutation.mutate()}
+                disabled={saveMutation.isPending}
+              >
+                Speichern
+              </Button>
+              <Button
+                variant="outlined"
+                size="small"
+                onClick={() => {
+                  setTestResult(null);
+                  testMutation.mutate();
+                }}
+                disabled={testMutation.isPending}
+              >
+                {testMutation.isPending ? <CircularProgress size={18} sx={{ mr: 1 }} /> : null}
+                Verbindung testen
+              </Button>
+              {testResult && (
+                <Chip
+                  label={testResult.success ? `Verbunden (${testResult.latencyMs}ms)` : `Fehler: ${testResult.message}`}
+                  color={testResult.success ? 'success' : 'error'}
+                  size="small"
+                />
+              )}
+            </Box>
+          </Stack>
+
+          <Divider sx={{ my: 2 }} />
+          <Typography variant="subtitle2" gutterBottom>Bot-Konto</Typography>
+          <Stack spacing={2}>
+            <TextField
+              label="Bot-Benutzername"
+              value={botUsername}
+              onChange={(e) => setBotUsername(e.target.value)}
+              fullWidth
+              size="small"
+            />
+            <TextField
+              label="Bot-App-Passwort"
+              type="password"
+              value={botAppPassword}
+              onChange={(e) => setBotAppPassword(e.target.value)}
+              fullWidth
+              size="small"
+            />
+            <Box sx={{ display: 'flex', gap: 2, alignItems: 'center' }}>
+              <Button
+                variant="contained"
+                size="small"
+                onClick={() => saveBotMutation.mutate()}
+                disabled={saveBotMutation.isPending}
+              >
+                Bot speichern
+              </Button>
+              <Button
+                variant="outlined"
+                size="small"
+                onClick={async () => {
+                  try {
+                    const result = await scheduledMessagesApi.getRooms();
+                    if (result.configured) {
+                      showSuccess(`Verbindung erfolgreich (${result.data?.length ?? 0} Räume)`);
+                    } else {
+                      showError('Bot nicht konfiguriert');
+                    }
+                  } catch {
+                    showError('Verbindungstest fehlgeschlagen');
+                  }
+                }}
+              >
+                Verbindung testen
+              </Button>
+            </Box>
+          </Stack>
+        </CardContent>
+      </Card>
+    </Stack>
   );
 }

frontend/src/components/shared/Sidebar.tsx

@@ -29,6 +29,7 @@ import {
   AssignmentTurnedIn,
   AccountBalance as AccountBalanceIcon,
   Checkroom as CheckroomIcon,
+  Schedule,
 } from '@mui/icons-material';
 import { useNavigate, useLocation } from 'react-router-dom';
 import { useQuery } from '@tanstack/react-query';
@@ -134,6 +135,12 @@ const baseNavigationItems: NavigationItem[] = [
     path: '/issues',
     permission: 'issues:view_own',
   },
+  {
+    text: 'Geplante Nachrichten',
+    icon: <Schedule />,
+    path: '/geplante-nachrichten',
+    permission: 'scheduled_messages:view',
+  },
 ];
 
 const adminItem: NavigationItem = {