chore: merge branch fix/mobile-kontakt-button and fix og-image.test.ts

tests/og-image.test.ts

@@ -93,11 +93,12 @@ describe('OG Image Generation', () => {
 
     const url = `${BASE_URL}/de/blog/${slug}/opengraph-image`;
     const response = await fetch(url);
+    const responseClone = response.clone();
     await verifyImageResponse(response);
 
     // Verify the image is substantially large (>50KB) to confirm it actually
     // contains the featured photo and isn't just a tiny fallback/text-only image
-    const buffer = await response.clone().arrayBuffer();
+    const buffer = await responseClone.arrayBuffer();
     expect(
       buffer.byteLength,
       `OG image for "${slug}" is suspiciously small (${buffer.byteLength} bytes) — likely missing featured photo`,