feat(saas): implement marketplace and tenant onboarding

Tiku.Api/Contracts/AssetAccessDtos.cs

@@ -6,15 +6,27 @@ using Tiku.Domain.Content;
 
 namespace Tiku.Api.Contracts;
 
+/// <summary>
+/// 资产访问签名查询参数。
+/// </summary>
 public sealed class AssetAccessQueryDto
 {
+    /// <summary>
+    /// 租户编码。
+    /// </summary>
     [StringLength(100)]
     public string? TenantCode { get; set; }
 
+    /// <summary>
+    /// 有效期秒数。
+    /// </summary>
     [Range(1, 7200)]
     public int? ExpiresInSeconds { get; set; }
 }
 
+/// <summary>
+/// 资产访问签名响应。
+/// </summary>
 public sealed record AssetAccessResponseDto(
     ContentAssetAccessSummaryDto Item,
     AssetAccessPrincipalDto Access,
@@ -34,6 +46,9 @@ public sealed record AssetAccessResponseDto(
     }
 }
 
+/// <summary>
+/// 内容资产访问摘要。
+/// </summary>
 public sealed record ContentAssetAccessSummaryDto(
     Guid Id,
     ContentAssetType AssetType,
@@ -60,11 +75,17 @@ public sealed record ContentAssetAccessSummaryDto(
     }
 }
 
+/// <summary>
+/// 资产访问Principal请求 DTO。
+/// </summary>
 public sealed record AssetAccessPrincipalDto(
     Guid? UserId,
     bool IsMember,
     bool HasSvip);
 
+/// <summary>
+/// SignedStorageUrl请求 DTO。
+/// </summary>
 public sealed record SignedStorageUrlDto(
     string Provider,
     string? Bucket,