docs: 补全租户与字典模块注释

src/Application/TakeoutSaaS.Application/Identity/Abstractions/IWeChatAuthService.cs

@@ -5,6 +5,12 @@ namespace TakeoutSaaS.Application.Identity.Abstractions;
 /// </summary>
 public interface IWeChatAuthService
 {
+    /// <summary>
+    /// 调用微信接口完成 code2Session 交换。
+    /// </summary>
+    /// <param name="code">临时登录凭证 code。</param>
+    /// <param name="cancellationToken">取消标记。</param>
+    /// <returns>会话信息。</returns>
     Task<WeChatSessionInfo> Code2SessionAsync(string code, CancellationToken cancellationToken = default);
 }
 
@@ -13,7 +19,18 @@ public interface IWeChatAuthService
 /// </summary>
 public sealed class WeChatSessionInfo
 {
+    /// <summary>
+    /// OpenId。
+    /// </summary>
     public string OpenId { get; init; } = string.Empty;
+
+    /// <summary>
+    /// UnionId。
+    /// </summary>
     public string? UnionId { get; init; }
+
+    /// <summary>
+    /// 会话密钥。
+    /// </summary>
     public string SessionKey { get; init; } = string.Empty;
 }