add auth, format

lib/features/promotions/presentation/widgets/promotion_card.dart

@@ -25,11 +25,7 @@ class PromotionCard extends StatelessWidget {
   /// Callback when card or detail button is tapped
   final VoidCallback? onTap;
 
-  const PromotionCard({
-    required this.promotion,
-    this.onTap,
-    super.key,
-  });
+  const PromotionCard({required this.promotion, this.onTap, super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -60,9 +56,7 @@ class PromotionCard extends StatelessWidget {
               placeholder: (context, url) => Container(
                 height: 150,
                 color: AppColors.grey100,
-                child: const Center(
-                  child: CircularProgressIndicator(),
-                ),
+                child: const Center(child: CircularProgressIndicator()),
               ),
               errorWidget: (context, url, error) => Container(
                 height: 150,