fix: align address footer flush left with contact icon column

lib/pdf-business-card.tsx

@@ -272,10 +272,11 @@ const styles = StyleSheet.create({
   addressFooter: {
     width: '100%',
     flexDirection: 'row',
-    justifyContent: 'center',
+    justifyContent: 'flex-start',
     alignItems: 'center',
     position: 'absolute',
-    bottom: '4mm', // Matched with top margin for perfect symmetry
+    bottom: '4mm',
+    left: '6mm', // Match backContainer paddingLeft for flush alignment
   },
   addressFooterText: {
     fontSize: 6.5,