feat(marketing): implement flash sale module api and app layer

src/Infrastructure/TakeoutSaaS.Infrastructure/App/Repositories/EfProductRepository.cs

@@ -510,6 +510,29 @@ public sealed class EfProductRepository(TakeoutAppDbContext context) : IProductR
             .ToListAsync(cancellationToken);
     }
 
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<Product>> GetByIdsAsync(
+        long tenantId,
+        long storeId,
+        IReadOnlyCollection<long> productIds,
+        CancellationToken cancellationToken = default)
+    {
+        if (productIds.Count == 0)
+        {
+            return [];
+        }
+
+        return await context.Products
+            .AsNoTracking()
+            .Where(x =>
+                x.TenantId == tenantId &&
+                x.StoreId == storeId &&
+                productIds.Contains(x.Id))
+            .OrderBy(x => x.Name)
+            .ThenBy(x => x.Id)
+            .ToListAsync(cancellationToken);
+    }
+
     /// <inheritdoc />
     public async Task<int> BatchUpdateProductCategoryAsync(long tenantId, long storeId, long categoryId, IReadOnlyCollection<long> productIds, CancellationToken cancellationToken = default)
     {