fix bookstack display error

frontend/src/components/dashboard/BookStackRecentWidget.tsx

@@ -78,7 +78,23 @@ const BookStackRecentWidget: React.FC = () => {
   const configured = data?.configured ?? true;
   const pages = data?.data ?? [];
 
-  if (!configured) return null;
+  if (!configured) {
+    return (
+      <Card sx={{ height: '100%' }}>
+        <CardContent>
+          <Box sx={{ display: 'flex', alignItems: 'center', gap: 1, mb: 2 }}>
+            <MenuBook color="disabled" />
+            <Typography variant="h6" sx={{ flexGrow: 1 }} color="text.secondary">
+              BookStack — Neueste Seiten
+            </Typography>
+          </Box>
+          <Typography variant="body2" color="text.secondary" sx={{ py: 2, textAlign: 'center' }}>
+            BookStack nicht eingerichtet
+          </Typography>
+        </CardContent>
+      </Card>
+    );
+  }
 
   return (
     <Card

frontend/src/components/dashboard/BookStackSearchWidget.tsx

@@ -8,8 +8,10 @@ import {
   Divider,
   CircularProgress,
   InputAdornment,
+  Skeleton,
 } from '@mui/material';
 import { Search, MenuBook } from '@mui/icons-material';
+import { useQuery } from '@tanstack/react-query';
 import { bookstackApi } from '../../services/bookstack';
 import type { BookStackSearchResult } from '../../types/bookstack.types';
 
@@ -63,29 +65,47 @@ const ResultRow: React.FC<{ result: BookStackSearchResult; showDivider: boolean
 const BookStackSearchWidget: React.FC = () => {
   const [query, setQuery] = useState('');
   const [results, setResults] = useState<BookStackSearchResult[]>([]);
-  const [loading, setLoading] = useState(false);
-  const [configured, setConfigured] = useState(true);
+  const [searching, setSearching] = useState(false);
   const debounceRef = useRef<ReturnType<typeof setTimeout> | null>(null);
+  const latestQueryRef = useRef<string>('');
+
+  const { data, isLoading: configLoading } = useQuery({
+    queryKey: ['bookstack-recent'],
+    queryFn: () => bookstackApi.getRecent(),
+    refetchInterval: 5 * 60 * 1000,
+    retry: 1,
+  });
+
+  // undefined while loading, true/false once known
+  const configured = configLoading ? undefined : (data?.configured ?? false);
 
   useEffect(() => {
     if (debounceRef.current) clearTimeout(debounceRef.current);
 
     if (!query.trim()) {
       setResults([]);
-      setLoading(false);
+      setSearching(false);
       return;
     }
 
-    setLoading(true);
+    setSearching(true);
+    const thisQuery = query.trim();
+    latestQueryRef.current = thisQuery;
+
     debounceRef.current = setTimeout(async () => {
       try {
-        const response = await bookstackApi.search(query.trim());
-        setConfigured(response.configured);
-        setResults(response.data);
+        const response = await bookstackApi.search(thisQuery);
+        if (latestQueryRef.current === thisQuery) {
+          setResults(response.data);
+        }
       } catch {
-        setResults([]);
+        if (latestQueryRef.current === thisQuery) {
+          setResults([]);
+        }
       } finally {
-        setLoading(false);
+        if (latestQueryRef.current === thisQuery) {
+          setSearching(false);
+        }
       }
     }, 400);
 
@@ -94,7 +114,37 @@ const BookStackSearchWidget: React.FC = () => {
     };
   }, [query]);
 
-  if (!configured) return null;
+  if (configured === undefined) {
+    return (
+      <Card sx={{ height: '100%' }}>
+        <CardContent>
+          <Box sx={{ display: 'flex', alignItems: 'center', gap: 1, mb: 2 }}>
+            <MenuBook color="primary" />
+            <Skeleton variant="text" width={160} height={32} />
+          </Box>
+          <Skeleton variant="rectangular" height={40} sx={{ borderRadius: 1 }} />
+        </CardContent>
+      </Card>
+    );
+  }
+
+  if (configured === false) {
+    return (
+      <Card sx={{ height: '100%' }}>
+        <CardContent>
+          <Box sx={{ display: 'flex', alignItems: 'center', gap: 1, mb: 2 }}>
+            <MenuBook color="disabled" />
+            <Typography variant="h6" sx={{ flexGrow: 1 }} color="text.secondary">
+              BookStack — Suche
+            </Typography>
+          </Box>
+          <Typography variant="body2" color="text.secondary" sx={{ py: 2, textAlign: 'center' }}>
+            BookStack nicht eingerichtet
+          </Typography>
+        </CardContent>
+      </Card>
+    );
+  }
 
   return (
     <Card
@@ -121,13 +171,13 @@ const BookStackSearchWidget: React.FC = () => {
           InputProps={{
             startAdornment: (
               <InputAdornment position="start">
-                {loading ? <CircularProgress size={16} /> : <Search fontSize="small" />}
+                {searching ? <CircularProgress size={16} /> : <Search fontSize="small" />}
               </InputAdornment>
             ),
           }}
         />
 
-        {!loading && query.trim() && results.length === 0 && (
+        {!searching && query.trim() && results.length === 0 && (
           <Typography variant="body2" color="text.secondary" sx={{ py: 2, textAlign: 'center' }}>
             Keine Ergebnisse für „{query}"
           </Typography>

frontend/src/components/dashboard/index.ts

@@ -4,3 +4,5 @@ export { default as StatsCard } from './StatsCard';
 export { default as DashboardLayout } from './DashboardLayout';
 export { default as PersonalWarningsBanner } from './PersonalWarningsBanner';
 export { default as UpcomingEventsWidget } from './UpcomingEventsWidget';
+export { default as BookStackRecentWidget } from './BookStackRecentWidget';
+export { default as BookStackSearchWidget } from './BookStackSearchWidget';