feat: migrate snowflake ids and refresh migrations

src/Domain/TakeoutSaaS.Domain/Products/Entities/Product.cs

@@ -11,12 +11,12 @@ public sealed class Product : MultiTenantEntityBase
     /// <summary>
     /// 所属门店。
     /// </summary>
-    public Guid StoreId { get; set; }
+    public long StoreId { get; set; }
 
     /// <summary>
     /// 所属分类。
     /// </summary>
-    public Guid CategoryId { get; set; }
+    public long CategoryId { get; set; }
 
     /// <summary>
     /// 商品编码。

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductAddonGroup.cs

@@ -11,7 +11,7 @@ public sealed class ProductAddonGroup : MultiTenantEntityBase
     /// <summary>
     /// 所属商品。
     /// </summary>
-    public Guid ProductId { get; set; }
+    public long ProductId { get; set; }
 
     /// <summary>
     /// 分组名称。

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductAddonOption.cs

@@ -10,7 +10,7 @@ public sealed class ProductAddonOption : MultiTenantEntityBase
     /// <summary>
     /// 所属加料分组。
     /// </summary>
-    public Guid AddonGroupId { get; set; }
+    public long AddonGroupId { get; set; }
 
     /// <summary>
     /// 选项名称。

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductAttributeGroup.cs

@@ -11,7 +11,12 @@ public sealed class ProductAttributeGroup : MultiTenantEntityBase
     /// <summary>
     /// 关联门店，可为空表示所有门店共享。
     /// </summary>
-    public Guid? StoreId { get; set; }
+    public long? StoreId { get; set; }
+
+    /// <summary>
+    /// 所属商品标识。
+    /// </summary>
+    public long ProductId { get; set; }
 
     /// <summary>
     /// 分组名称，例如“辣度”“份量”。

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductAttributeOption.cs

@@ -10,7 +10,7 @@ public sealed class ProductAttributeOption : MultiTenantEntityBase
     /// <summary>
     /// 所属规格组。
     /// </summary>
-    public Guid AttributeGroupId { get; set; }
+    public long AttributeGroupId { get; set; }
 
     /// <summary>
     /// 选项名称。

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductCategory.cs

@@ -10,7 +10,7 @@ public sealed class ProductCategory : MultiTenantEntityBase
     /// <summary>
     /// 所属门店。
     /// </summary>
-    public Guid StoreId { get; set; }
+    public long StoreId { get; set; }
 
     /// <summary>
     /// 分类名称。

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductMediaAsset.cs

@@ -11,7 +11,7 @@ public sealed class ProductMediaAsset : MultiTenantEntityBase
     /// <summary>
     /// 商品标识。
     /// </summary>
-    public Guid ProductId { get; set; }
+    public long ProductId { get; set; }
 
     /// <summary>
     /// 媒体类型。

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductPricingRule.cs

@@ -11,7 +11,7 @@ public sealed class ProductPricingRule : MultiTenantEntityBase
     /// <summary>
     /// 所属商品。
     /// </summary>
-    public Guid ProductId { get; set; }
+    public long ProductId { get; set; }
 
     /// <summary>
     /// 策略类型。
@@ -42,4 +42,9 @@ public sealed class ProductPricingRule : MultiTenantEntityBase
     /// 生效星期（JSON 数组）。
     /// </summary>
     public string? WeekdaysJson { get; set; }
+
+    /// <summary>
+    /// 排序值。
+    /// </summary>
+    public int SortOrder { get; set; } = 100;
 }

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductSku.cs

@@ -10,7 +10,7 @@ public sealed class ProductSku : MultiTenantEntityBase
     /// <summary>
     /// 所属商品标识。
     /// </summary>
-    public Guid ProductId { get; set; }
+    public long ProductId { get; set; }
 
     /// <summary>
     /// SKU 编码。
@@ -46,4 +46,9 @@ public sealed class ProductSku : MultiTenantEntityBase
     /// 规格属性 JSON（记录选项 ID）。
     /// </summary>
     public string AttributesJson { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 排序值。
+    /// </summary>
+    public int SortOrder { get; set; } = 100;
 }

src/Domain/TakeoutSaaS.Domain/Products/Repositories/IProductRepository.cs

@@ -0,0 +1,103 @@
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using TakeoutSaaS.Domain.Products.Entities;
+using TakeoutSaaS.Domain.Products.Enums;
+
+namespace TakeoutSaaS.Domain.Products.Repositories;
+
+/// <summary>
+/// 商品聚合仓储契约。
+/// </summary>
+public interface IProductRepository
+{
+    /// <summary>
+    /// 依据标识获取商品。
+    /// </summary>
+    Task<Product?> FindByIdAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 按分类与状态筛选商品列表。
+    /// </summary>
+    Task<IReadOnlyList<Product>> SearchAsync(long tenantId, long? categoryId, ProductStatus? status, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 获取租户下的商品分类。
+    /// </summary>
+    Task<IReadOnlyList<ProductCategory>> GetCategoriesAsync(long tenantId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 获取商品 SKU。
+    /// </summary>
+    Task<IReadOnlyList<ProductSku>> GetSkusAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 获取商品加料组与选项。
+    /// </summary>
+    Task<IReadOnlyList<ProductAddonGroup>> GetAddonGroupsAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 获取商品加料选项。
+    /// </summary>
+    Task<IReadOnlyList<ProductAddonOption>> GetAddonOptionsAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 获取商品规格组与选项。
+    /// </summary>
+    Task<IReadOnlyList<ProductAttributeGroup>> GetAttributeGroupsAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 获取商品规格选项。
+    /// </summary>
+    Task<IReadOnlyList<ProductAttributeOption>> GetAttributeOptionsAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 获取商品媒资。
+    /// </summary>
+    Task<IReadOnlyList<ProductMediaAsset>> GetMediaAssetsAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 获取商品定价规则。
+    /// </summary>
+    Task<IReadOnlyList<ProductPricingRule>> GetPricingRulesAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 新增分类。
+    /// </summary>
+    Task AddCategoryAsync(ProductCategory category, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 新增商品。
+    /// </summary>
+    Task AddProductAsync(Product product, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 新增 SKU。
+    /// </summary>
+    Task AddSkusAsync(IEnumerable<ProductSku> skus, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 新增加料组与选项。
+    /// </summary>
+    Task AddAddonGroupsAsync(IEnumerable<ProductAddonGroup> groups, IEnumerable<ProductAddonOption> options, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 新增规格组与选项。
+    /// </summary>
+    Task AddAttributeGroupsAsync(IEnumerable<ProductAttributeGroup> groups, IEnumerable<ProductAttributeOption> options, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 新增媒资。
+    /// </summary>
+    Task AddMediaAssetsAsync(IEnumerable<ProductMediaAsset> assets, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 新增定价规则。
+    /// </summary>
+    Task AddPricingRulesAsync(IEnumerable<ProductPricingRule> rules, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 持久化变更。
+    /// </summary>
+    Task SaveChangesAsync(CancellationToken cancellationToken = default);
+}