update

frontend/src/pages/FahrzeugBuchungen.tsx

@@ -48,6 +48,7 @@ import { useNavigate } from 'react-router-dom';
 import { format, parseISO } from 'date-fns';
 import DashboardLayout from '../components/dashboard/DashboardLayout';
 import ChatAwareFab from '../components/shared/ChatAwareFab';
+import GermanDateField from '../components/shared/GermanDateField';
 import ServiceModePage from '../components/shared/ServiceModePage';
 import { useAuth } from '../contexts/AuthContext';
 import { usePermissionContext } from '../contexts/PermissionContext';
@@ -262,22 +263,18 @@ function FahrzeugBuchungen() {
             {/* Filters */}
             <Paper sx={{ p: 2, mb: 2 }}>
               <Stack direction={{ xs: 'column', sm: 'row' }} spacing={2} alignItems="center">
-                <TextField
+                <GermanDateField
                   size="small"
                   label="Von"
-                  type="date"
                   value={filterFrom}
-                  onChange={(e) => setFilterFrom(e.target.value)}
-                  InputLabelProps={{ shrink: true }}
+                  onChange={(iso) => setFilterFrom(iso)}
                   sx={{ minWidth: 160 }}
                 />
-                <TextField
+                <GermanDateField
                   size="small"
                   label="Bis"
-                  type="date"
                   value={filterTo}
-                  onChange={(e) => setFilterTo(e.target.value)}
-                  InputLabelProps={{ shrink: true }}
+                  onChange={(iso) => setFilterTo(iso)}
                   sx={{ minWidth: 160 }}
                 />
                 <FormControl size="small" sx={{ minWidth: 180 }}>