feat: Add white and black color variants for business cards with precise SVG fills

scripts/generate-business-cards.ts

@@ -103,7 +103,7 @@ END:VCARD`;
       React.createElement(PDFBusinessCard, {
         person,
         qrCodeDataUrl,
-        isWhiteVariant: true,
+        variant: 'white',
       }),
     );
 
@@ -113,6 +113,27 @@ END:VCARD`;
     execSync(gsCommandWhite, { stdio: 'ignore' });
     fs.unlinkSync(rgbPathWhite);
     console.log(`✓ White Variant generated: ${finalFileNameWhite}`);
+
+    // Generate Black Variant
+    const finalFileNameBlack = `KLZ_Visitenkarte_${safeName}_Black.pdf`;
+    const rgbPathBlack = path.join(CONFIG.outputDir, `RGB_${finalFileNameBlack}`);
+    const finalPathBlack = path.join(CONFIG.outputDir, finalFileNameBlack);
+
+    console.log(`- Rendering Black Variant...`);
+    const bufferBlack = await renderToBuffer(
+      React.createElement(PDFBusinessCard, {
+        person,
+        qrCodeDataUrl,
+        variant: 'black',
+      }),
+    );
+
+    fs.writeFileSync(rgbPathBlack, bufferBlack);
+
+    const gsCommandBlack = `gs -dNoOutputFonts -sDEVICE=pdfwrite -o "${finalPathBlack}" "${rgbPathBlack}"`;
+    execSync(gsCommandBlack, { stdio: 'ignore' });
+    fs.unlinkSync(rgbPathBlack);
+    console.log(`✓ Black Variant generated: ${finalFileNameBlack}`);
   }
 }