fix(pdf): revert address footer bottom to 7mm

lib/pdf-business-card.tsx

@@ -367,7 +367,7 @@ const styles = StyleSheet.create({
     justifyContent: 'flex-start',
     alignItems: 'center',
     position: 'absolute',
-    bottom: '10mm', // Pushed up further from the bottom edge
+    bottom: '7mm', // 3mm bleed + 4mm safe margin
     left: '6mm', // Match backContainer paddingLeft for flush alignment
   },
   addressFooterText: {