fix

lib/features/products/domain/entities/product_stage_entity.dart

@@ -33,7 +33,7 @@ class ProductStageEntity extends Equatable {
 
   /// Get display name for the stage
   /// Returns "No Stage" if stageName is null
-  String get displayName => stageName ?? 'No Stage';
+  String get displayName => stageName ?? 'Không tên';
 
   /// Check if this is a valid stage (has a stage name)
   bool get hasStage => stageName != null && stageName!.isNotEmpty;