feat(saas): implement marketplace and tenant onboarding

Tiku.Api/Contracts/HealthDtos.cs

@@ -6,6 +6,9 @@ namespace Tiku.Api.Contracts;
 /// <param name="Status">服务状态，例如 ok。</param>
 /// <param name="Service">服务名称。</param>
 /// <param name="CheckedAt">检查时间。</param>
+/// <summary>
+/// 健康检查Response请求 DTO。
+/// </summary>
 public sealed record HealthResponseDto(
     string Status,
     string Service,