feat: 新增租户审核领取和审核日志接口

- 新增 TenantReviewClaim 和 TenantAuditLog 实体
- 新增 TenantAuditAction 枚举
- 新增审核领取相关接口：GET/POST /review/claim, /review/force-claim, /review/release
- 新增审核日志接口：GET /audits
- 更新 ITenantRepository 和 EfTenantRepository
- 更新 TakeoutAppDbContext 添加 DbSet

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/Domain/TakeoutSaaS.Domain/Tenants/Entities/TenantAuditLog.cs

@@ -0,0 +1,50 @@
+using TakeoutSaaS.Domain.Tenants.Enums;
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Tenants.Entities;
+
+/// <summary>
+/// 租户审核日志。
+/// </summary>
+public sealed class TenantAuditLog : AuditableEntityBase
+{
+    /// <summary>
+    /// 租户 ID。
+    /// </summary>
+    public long TenantId { get; set; }
+
+    /// <summary>
+    /// 操作类型。
+    /// </summary>
+    public TenantAuditAction Action { get; set; }
+
+    /// <summary>
+    /// 操作标题。
+    /// </summary>
+    public string Title { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 操作描述。
+    /// </summary>
+    public string? Description { get; set; }
+
+    /// <summary>
+    /// 操作人 ID。
+    /// </summary>
+    public long? OperatorId { get; set; }
+
+    /// <summary>
+    /// 操作人名称。
+    /// </summary>
+    public string? OperatorName { get; set; }
+
+    /// <summary>
+    /// 操作前状态。
+    /// </summary>
+    public TenantStatus? PreviousStatus { get; set; }
+
+    /// <summary>
+    /// 操作后状态。
+    /// </summary>
+    public TenantStatus? CurrentStatus { get; set; }
+}

src/Domain/TakeoutSaaS.Domain/Tenants/Entities/TenantReviewClaim.cs

@@ -0,0 +1,34 @@
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Tenants.Entities;
+
+/// <summary>
+/// 租户审核领取记录。
+/// </summary>
+public sealed class TenantReviewClaim : AuditableEntityBase
+{
+    /// <summary>
+    /// 租户 ID。
+    /// </summary>
+    public long TenantId { get; set; }
+
+    /// <summary>
+    /// 领取人 ID。
+    /// </summary>
+    public long ClaimedBy { get; set; }
+
+    /// <summary>
+    /// 领取人名称。
+    /// </summary>
+    public string ClaimedByName { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 领取时间。
+    /// </summary>
+    public DateTime ClaimedAt { get; set; }
+
+    /// <summary>
+    /// 释放时间（为空表示未释放）。
+    /// </summary>
+    public DateTime? ReleasedAt { get; set; }
+}

src/Domain/TakeoutSaaS.Domain/Tenants/Enums/TenantAuditAction.cs

@@ -0,0 +1,52 @@
+namespace TakeoutSaaS.Domain.Tenants.Enums;
+
+/// <summary>
+/// 租户审核操作类型。
+/// </summary>
+public enum TenantAuditAction
+{
+    /// <summary>
+    /// 创建租户。
+    /// </summary>
+    Created = 0,
+
+    /// <summary>
+    /// 领取审核。
+    /// </summary>
+    ReviewClaimed = 1,
+
+    /// <summary>
+    /// 释放审核。
+    /// </summary>
+    ReviewReleased = 2,
+
+    /// <summary>
+    /// 强制接管审核。
+    /// </summary>
+    ReviewForceClaimed = 3,
+
+    /// <summary>
+    /// 审核通过。
+    /// </summary>
+    Approved = 4,
+
+    /// <summary>
+    /// 审核驳回。
+    /// </summary>
+    Rejected = 5,
+
+    /// <summary>
+    /// 冻结租户。
+    /// </summary>
+    Frozen = 6,
+
+    /// <summary>
+    /// 解冻租户。
+    /// </summary>
+    Unfrozen = 7,
+
+    /// <summary>
+    /// 更新信息。
+    /// </summary>
+    Updated = 8
+}

src/Domain/TakeoutSaaS.Domain/Tenants/Repositories/ITenantRepository.cs

@@ -137,6 +137,44 @@ public interface ITenantRepository
     /// <param name="cancellationToken">取消标记。</param>
     /// <returns>异步操作任务。</returns>
     Task SaveChangesAsync(CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 获取租户当前有效的审核领取记录。
+    /// </summary>
+    /// <param name="tenantId">租户 ID。</param>
+    /// <param name="cancellationToken">取消标记。</param>
+    /// <returns>审核领取记录，未找到返回 null。</returns>
+    Task<TenantReviewClaim?> GetActiveReviewClaimAsync(long tenantId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 新增审核领取记录。
+    /// </summary>
+    /// <param name="claim">审核领取记录。</param>
+    /// <param name="cancellationToken">取消标记。</param>
+    /// <returns>异步操作任务。</returns>
+    Task AddReviewClaimAsync(TenantReviewClaim claim, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 新增审核日志。
+    /// </summary>
+    /// <param name="auditLog">审核日志。</param>
+    /// <param name="cancellationToken">取消标记。</param>
+    /// <returns>异步操作任务。</returns>
+    Task AddAuditLogAsync(TenantAuditLog auditLog, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 获取租户审核日志列表（分页）。
+    /// </summary>
+    /// <param name="tenantId">租户 ID。</param>
+    /// <param name="page">页码（从 1 开始）。</param>
+    /// <param name="pageSize">每页条数。</param>
+    /// <param name="cancellationToken">取消标记。</param>
+    /// <returns>审核日志列表和总数。</returns>
+    Task<(IReadOnlyList<TenantAuditLog> Items, int TotalCount)> GetAuditLogsAsync(
+        long tenantId,
+        int page,
+        int pageSize,
+        CancellationToken cancellationToken = default);
 }
 
 /// <summary>