chore: 同步当前开发内容

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

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+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using TakeoutSaaS.Application.Identity.Contracts;
+
+namespace TakeoutSaaS.Application.Identity.Abstractions;
+
+/// <summary>
+/// 管理后台认证服务。
+/// </summary>
+public interface IAdminAuthService
+{
+    Task<TokenResponse> LoginAsync(AdminLoginRequest request, CancellationToken cancellationToken = default);
+    Task<TokenResponse> RefreshTokenAsync(RefreshTokenRequest request, CancellationToken cancellationToken = default);
+    Task<CurrentUserProfile> GetProfileAsync(Guid userId, CancellationToken cancellationToken = default);
+}

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

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+using System.Threading;
+using System.Threading.Tasks;
+using TakeoutSaaS.Application.Identity.Contracts;
+
+namespace TakeoutSaaS.Application.Identity.Abstractions;
+
+/// <summary>
+/// JWT 令牌服务契约。
+/// </summary>
+public interface IJwtTokenService
+{
+    Task<TokenResponse> CreateTokensAsync(CurrentUserProfile profile, bool isNewUser = false, CancellationToken cancellationToken = default);
+}

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

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+using System.Threading;
+using System.Threading.Tasks;
+
+namespace TakeoutSaaS.Application.Identity.Abstractions;
+
+/// <summary>
+/// 登录限流器。
+/// </summary>
+public interface ILoginRateLimiter
+{
+    Task EnsureAllowedAsync(string key, CancellationToken cancellationToken = default);
+    Task ResetAsync(string key, CancellationToken cancellationToken = default);
+}

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

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+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using TakeoutSaaS.Application.Identity.Contracts;
+
+namespace TakeoutSaaS.Application.Identity.Abstractions;
+
+/// <summary>
+/// 小程序认证服务。
+/// </summary>
+public interface IMiniAuthService
+{
+    Task<TokenResponse> LoginWithWeChatAsync(WeChatLoginRequest request, CancellationToken cancellationToken = default);
+    Task<TokenResponse> RefreshTokenAsync(RefreshTokenRequest request, CancellationToken cancellationToken = default);
+    Task<CurrentUserProfile> GetProfileAsync(Guid userId, CancellationToken cancellationToken = default);
+}

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

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+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using TakeoutSaaS.Application.Identity.Models;
+
+namespace TakeoutSaaS.Application.Identity.Abstractions;
+
+/// <summary>
+/// 刷新令牌存储。
+/// </summary>
+public interface IRefreshTokenStore
+{
+    Task<RefreshTokenDescriptor> IssueAsync(Guid userId, DateTime expiresAt, CancellationToken cancellationToken = default);
+    Task<RefreshTokenDescriptor?> GetAsync(string refreshToken, CancellationToken cancellationToken = default);
+    Task RevokeAsync(string refreshToken, CancellationToken cancellationToken = default);
+}

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

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+using System.Threading;
+using System.Threading.Tasks;
+
+namespace TakeoutSaaS.Application.Identity.Abstractions;
+
+/// <summary>
+/// 微信 code2Session 服务契约。
+/// </summary>
+public interface IWeChatAuthService
+{
+    Task<WeChatSessionInfo> Code2SessionAsync(string code, CancellationToken cancellationToken = default);
+}
+
+/// <summary>
+/// 微信会话信息。
+/// </summary>
+public sealed class WeChatSessionInfo
+{
+    public string OpenId { get; init; } = string.Empty;
+    public string? UnionId { get; init; }
+    public string SessionKey { get; init; } = string.Empty;
+}