naming

Webshop.Infrastructure/Repositories/ProductRepository.cs

@@ -28,8 +28,13 @@ namespace Webshop.Infrastructure.Repositories
 
         public async Task AddProductAsync(Product product)
         {
-            _context.Products.Add(product);
-            await _context.SaveChangesAsync(); // Wichtig: Änderungen speichern
+            await _context.Products.AddAsync(product);
+            await _context.SaveChangesAsync();
+        }
+
+        public async Task<bool> ProductExistsBySlugAsync(string slug)
+        {
+            return await _context.Products.AnyAsync(p => p.Slug == slug);
         }
 
         public async Task UpdateProductAsync(Product product)