feat(admin-api): 实现 TD-001 和 TD-002 后端接口

TD-001 - PUT /api/admin/v1/tenants/{tenantId}:
- 新增 UpdateTenantCommand + UpdateTenantCommandHandler
- Controller 新增 Update 端点（tenant:update 权限）
- 校验：租户存在、name 非空、name/contactPhone 冲突返回 409
- 仓储扩展：ITenantRepository.ExistsByNameAsync

TD-002 - GET /api/admin/v1/tenants/{tenantId}/quota-usage-history:
- 新增 CQRS Query/Handler/DTO/Validator
- 支持分页（Page>=1, PageSize 1~100）
- 支持时间范围和 QuotaType 过滤
- 新增 tenant_quota_usage_histories 表（含迁移）
- 写入点：CheckTenantQuotaCommandHandler + PurchaseQuotaPackageCommandHandler

构建验证：dotnet build 通过
数据库迁移：已应用 20251218121053_AddTenantQuotaUsageHistories

src/Application/TakeoutSaaS.Application/App/Tenants/Validators/GetTenantQuotaUsageHistoryQueryValidator.cs

@@ -0,0 +1,27 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Tenants.Queries;
+
+namespace TakeoutSaaS.Application.App.Tenants.Validators;
+
+/// <summary>
+/// 租户配额使用历史查询验证器。
+/// </summary>
+public sealed class GetTenantQuotaUsageHistoryQueryValidator : AbstractValidator<GetTenantQuotaUsageHistoryQuery>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public GetTenantQuotaUsageHistoryQueryValidator()
+    {
+        RuleFor(x => x.TenantId).GreaterThan(0);
+        RuleFor(x => x.Page).GreaterThanOrEqualTo(1);
+        RuleFor(x => x.PageSize).InclusiveBetween(1, 100);
+
+        // (空行后) 时间范围校验
+        When(x => x.StartDate.HasValue && x.EndDate.HasValue, () =>
+        {
+            RuleFor(x => x.EndDate!.Value).GreaterThanOrEqualTo(x => x.StartDate!.Value);
+        });
+    }
+}
+