update

frontend/src/pages/Fahrzeuge.tsx

@@ -2,6 +2,7 @@ import React, { useEffect, useState, useCallback } from 'react';
 import {
   Alert,
   Box,
+  Button,
   Card,
   CardActionArea,
   CardContent,
@@ -20,6 +21,7 @@ import {
   CheckCircle,
   DirectionsCar,
   Error as ErrorIcon,
+  FileDownload,
   PauseCircle,
   School,
   Search,
@@ -328,6 +330,24 @@ function Fahrzeuge() {
     fetchWarnings();
   }, []);
 
+  const handleExportAlerts = useCallback(async () => {
+    try {
+      const blob = await vehiclesApi.exportAlerts();
+      const url = URL.createObjectURL(blob);
+      const a = document.createElement('a');
+      a.href = url;
+      const today = new Date();
+      const dateStr = `${today.getFullYear()}-${String(today.getMonth() + 1).padStart(2, '0')}-${String(today.getDate()).padStart(2, '0')}`;
+      a.download = `pruefungen_${dateStr}.csv`;
+      document.body.appendChild(a);
+      a.click();
+      a.remove();
+      URL.revokeObjectURL(url);
+    } catch {
+      setError('CSV-Export fehlgeschlagen.');
+    }
+  }, []);
+
   const filtered = vehicles.filter((v) => {
     if (!search.trim()) return true;
     const q = search.toLowerCase();
@@ -366,6 +386,14 @@ function Fahrzeuge() {
               </Typography>
             )}
           </Box>
+          <Button
+            variant="outlined"
+            size="small"
+            startIcon={<FileDownload />}
+            onClick={handleExportAlerts}
+          >
+            Prüfungen CSV
+          </Button>
         </Box>
 
         {hasOverdue && (