Revert "refactor: 清理租户API旧模块代码"

This reverts commit 992930a821.

src/Domain/TakeoutSaaS.Domain/Identity/Repositories/IMiniUserRepository.cs

@@ -0,0 +1,37 @@
+using TakeoutSaaS.Domain.Identity.Entities;
+
+namespace TakeoutSaaS.Domain.Identity.Repositories;
+
+/// <summary>
+/// 小程序用户仓储契约。
+/// </summary>
+public interface IMiniUserRepository
+{
+    /// <summary>
+    /// 根据微信 OpenId 查找小程序用户。
+    /// </summary>
+    /// <param name="openId">微信 OpenId</param>
+    /// <param name="cancellationToken">取消令牌</param>
+    /// <returns>小程序用户，如果不存在则返回 null</returns>
+    Task<MiniUser?> FindByOpenIdAsync(string openId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 根据用户 ID 查找小程序用户。
+    /// </summary>
+    /// <param name="id">用户 ID</param>
+    /// <param name="cancellationToken">取消令牌</param>
+    /// <returns>小程序用户，如果不存在则返回 null</returns>
+    Task<MiniUser?> FindByIdAsync(long id, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 创建或更新小程序用户（如果 OpenId 已存在则更新，否则创建）。
+    /// </summary>
+    /// <param name="openId">微信 OpenId</param>
+    /// <param name="unionId">微信 UnionId（可选）</param>
+    /// <param name="nickname">昵称</param>
+    /// <param name="avatar">头像地址（可选）</param>
+    /// <param name="tenantId">租户 ID</param>
+    /// <param name="cancellationToken">取消令牌</param>
+    /// <returns>创建或更新后的小程序用户</returns>
+    Task<MiniUser> CreateOrUpdateAsync(string openId, string? unionId, string? nickname, string? avatar, long tenantId, CancellationToken cancellationToken = default);
+}