docs: 提交当前注释更新

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantDetailQueryHandler.cs

@@ -16,6 +16,12 @@ public sealed class GetMerchantDetailQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<GetMerchantDetailQuery, MerchantDetailDto>
 {
+    /// <summary>
+    /// 查询商户详情，包括证照和合同。
+    /// </summary>
+    /// <param name="request">查询请求。</param>
+    /// <param name="cancellationToken">取消标记。</param>
+    /// <returns>商户详情 DTO。</returns>
     public async Task<MerchantDetailDto> Handle(GetMerchantDetailQuery request, CancellationToken cancellationToken)
     {
         // 1. 获取租户上下文并查询商户