refactor: 移除租户端简化登录接口及相关依赖

- 移除 /api/tenant/v1/auth/login/simple 接口
- 移除 IAdminAuthService.LoginSimpleAsync 方法
- 移除 AdminAuthService.LoginSimpleAsync 实现
- 移除 IsLikelyPhone 辅助方法
- 清理未使用的 ITenantContextAccessor 和 ITenantRepository 依赖
- 添加 CLAUDE.md 开发规范文件

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

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

@@ -13,11 +13,6 @@ public interface IAdminAuthService
     /// </summary>
     Task<TokenResponse> LoginAsync(AdminLoginRequest request, CancellationToken cancellationToken = default);
 
-    /// <summary>
-    /// 简化登录：支持使用“账号@手机号”自动解析租户后登录。
-    /// </summary>
-    Task<TokenResponse> LoginSimpleAsync(AdminLoginRequest request, CancellationToken cancellationToken = default);
-
     /// <summary>
     /// 刷新 Token。
     /// </summary>

src/Application/TakeoutSaaS.Application/Identity/Services/AdminAuthService.cs

@@ -4,7 +4,6 @@ using TakeoutSaaS.Application.Identity.Contracts;
 using TakeoutSaaS.Domain.Identity.Entities;
 using TakeoutSaaS.Domain.Identity.Enums;
 using TakeoutSaaS.Domain.Identity.Repositories;
-using TakeoutSaaS.Domain.Tenants.Repositories;
 using TakeoutSaaS.Shared.Abstractions.Constants;
 using TakeoutSaaS.Shared.Abstractions.Exceptions;
 using TakeoutSaaS.Shared.Abstractions.Results;
@@ -25,9 +24,7 @@ public sealed class AdminAuthService(
     IPasswordHasher<IdentityUser> passwordHasher,
     IJwtTokenService jwtTokenService,
     IRefreshTokenStore refreshTokenStore,
-    ITenantProvider tenantProvider,
-    ITenantContextAccessor tenantContextAccessor,
-    ITenantRepository tenantRepository) : IAdminAuthService
+    ITenantProvider tenantProvider) : IAdminAuthService
 {
     private const string TenantAdminRoleCode = "tenant-admin";
 
@@ -89,60 +86,6 @@ public sealed class AdminAuthService(
         return await jwtTokenService.CreateTokensAsync(profile, false, cancellationToken);
     }
 
-    /// <summary>
-    /// 简化登录：支持使用“账号@手机号”解析租户后登录。
-    /// </summary>
-    /// <param name="request">登录请求</param>
-    /// <param name="cancellationToken">取消令牌</param>
-    /// <returns>令牌响应</returns>
-    public async Task<TokenResponse> LoginSimpleAsync(AdminLoginRequest request, CancellationToken cancellationToken = default)
-    {
-        // 1. 标准化输入
-        var rawAccount = request.Account?.Trim() ?? string.Empty;
-
-        // 2. 尝试解析 “账号@手机号”
-        var atIndex = rawAccount.LastIndexOf('@');
-        if (atIndex > 0 && atIndex < rawAccount.Length - 1)
-        {
-            var accountPart = rawAccount[..atIndex].Trim();
-            var phonePart = rawAccount[(atIndex + 1)..].Trim();
-
-            if (IsLikelyPhone(phonePart))
-            {
-                if (string.IsNullOrWhiteSpace(accountPart))
-                {
-                    throw new BusinessException(ErrorCodes.BadRequest, "账号格式错误，应为 账号@手机号");
-                }
-
-                var tenantId = await tenantRepository.FindTenantIdByContactPhoneAsync(phonePart, cancellationToken);
-                if (!tenantId.HasValue || tenantId.Value == 0)
-                {
-                    throw new BusinessException(ErrorCodes.Unauthorized, "账号或密码错误");
-                }
-
-                var originalTenant = tenantContextAccessor.Current;
-                tenantContextAccessor.Current = new TenantContext(tenantId.Value, null, "login:simple:contact_phone");
-                try
-                {
-                    return await LoginAsync(new AdminLoginRequest { Account = accountPart, Password = request.Password }, cancellationToken);
-                }
-                finally
-                {
-                    tenantContextAccessor.Current = originalTenant;
-                }
-            }
-        }
-
-        // 3. 未携带手机号时，要求外部已解析租户（Header/Host 等）
-        if (tenantProvider.GetCurrentTenantId() == 0)
-        {
-            throw new BusinessException(ErrorCodes.BadRequest, "缺少租户标识，请使用 账号@手机号 登录");
-        }
-
-        // 4. 走原有登录逻辑
-        return await LoginAsync(new AdminLoginRequest { Account = rawAccount, Password = request.Password }, cancellationToken);
-    }
-
     /// <summary>
     /// 刷新访问令牌：使用刷新令牌获取新的访问令牌和刷新令牌。
     /// </summary>
@@ -398,35 +341,6 @@ public sealed class AdminAuthService(
         await userRepository.SaveChangesAsync(cancellationToken);
     }
 
-    private static bool IsLikelyPhone(string value)
-    {
-        if (string.IsNullOrWhiteSpace(value))
-        {
-            return false;
-        }
-
-        var span = value.AsSpan();
-        if (span[0] == '+')
-        {
-            span = span[1..];
-        }
-
-        if (span.Length < 6 || span.Length > 32)
-        {
-            return false;
-        }
-
-        foreach (var ch in span)
-        {
-            if (!char.IsDigit(ch))
-            {
-                return false;
-            }
-        }
-
-        return true;
-    }
-
     private static IReadOnlyList<MenuNodeDto> BuildMenuTree(
         IReadOnlyList<Domain.Identity.Entities.MenuDefinition> definitions,
         IReadOnlyList<string> permissions)