feat: add vehicle edit page, image gallery with upload, print and CSV export

frontend/app/[locale]/fahrzeuge/[id]/bearbeiten/page.tsx

@@ -0,0 +1,15 @@
+import { VehicleEditForm } from '@/components/vehicles/VehicleEditForm';
+
+export default async function FahrzeugBearbeitenPage({
+  params,
+}: {
+  params: Promise<{ locale: string; id: string }>;
+}) {
+  const { id } = await params;
+  return (
+    <div className="max-w-2xl mx-auto p-6">
+      <h1 className="text-2xl font-bold text-text mb-6">Fahrzeug bearbeiten</h1>
+      <VehicleEditForm vehicleId={id} />
+    </div>
+  );
+}

frontend/app/globals.css

@@ -20,3 +20,71 @@ body {
   color: var(--color-text);
   font-family: system-ui, -apple-system, sans-serif;
 }
+
+@media print {
+  body {
+    background: white !important;
+    color: black !important;
+    font-size: 12pt;
+  }
+
+  .print\:hidden {
+    display: none !important;
+  }
+
+  .print\:block {
+    display: block !important;
+  }
+
+  nav,
+  aside,
+  button[class*="print:hidden"],
+  [data-testid="vehicle-actions"],
+  [data-testid="vehicle-images"],
+  [data-testid="upload-image-button"],
+  [data-testid="delete-button"],
+  [data-testid="vehicle-filters"],
+  [data-testid="vehicle-pagination"] {
+    display: none !important;
+  }
+
+  [data-testid="vehicle-detail-fields"] {
+    border: 1px solid #ccc !important;
+    padding: 16px !important;
+  }
+
+  [data-testid="vehicle-detail-fields"] dt {
+    font-weight: bold !important;
+    color: #333 !important;
+  }
+
+  [data-testid="vehicle-detail-fields"] dd {
+    color: black !important;
+  }
+
+  h1[data-testid="vehicle-detail-title"] {
+    font-size: 18pt !important;
+    color: black !important;
+  }
+
+  a {
+    text-decoration: none !important;
+    color: black !important;
+  }
+
+  .bg-surface {
+    background: white !important;
+  }
+
+  .border-border {
+    border-color: #ccc !important;
+  }
+
+  .text-text-muted {
+    color: #555 !important;
+  }
+
+  .text-text {
+    color: black !important;
+  }
+}