feat: add crop marks variant for print finishing

scripts/generate-business-cards.ts

@@ -143,7 +143,26 @@ END:VCARD`;
     const gsNoTruckCommand = `gs -dNoOutputFonts -sDEVICE=pdfwrite -o "${finalNoTruckPath}" "${tempNoTruckPath}"`;
     execSync(gsNoTruckCommand, { stdio: 'inherit' });
     fs.unlinkSync(tempNoTruckPath);
-    console.log(`✓ No Truck Print File generated: ${noTruckFileName}`);
+    // 4. CROP MARKS PDF (RGB)
+    console.log(`- Rendering Crop Marks Variant (RGB)...`);
+    const cropMarksFileName = `KLZ_Visitenkarte_${safeName}_CropMarks.pdf`;
+    const tempCropMarksPath = path.join(CONFIG.outputDir, `temp_${cropMarksFileName}`);
+    const finalCropMarksPath = path.join(CONFIG.outputDir, cropMarksFileName);
+
+    buffer = await renderToBuffer(
+      React.createElement(PDFBusinessCard, {
+        person,
+        qrCodeDataUrl,
+        variant: 'blue',
+        isViaprinto: false,
+        withCropMarks: true,
+      }),
+    );
+    fs.writeFileSync(tempCropMarksPath, buffer);
+    const gsCropMarksCommand = `gs -dNoOutputFonts -sDEVICE=pdfwrite -o "${finalCropMarksPath}" "${tempCropMarksPath}"`;
+    execSync(gsCropMarksCommand, { stdio: 'inherit' });
+    fs.unlinkSync(tempCropMarksPath);
+    console.log(`✓ Crop Marks Print File generated: ${cropMarksFileName}`);
   }
 }