feat: 新增租户管理端 TenantApi 并移除旧 API

src/Infrastructure/TakeoutSaaS.Infrastructure/Identity/Persistence/EfIdentityUserRepository.cs

@@ -18,6 +18,24 @@ public sealed class EfIdentityUserRepository(IdentityDbContext dbContext) : IIde
     public Task<IdentityUser?> FindByAccountAsync(string account, CancellationToken cancellationToken = default)
         => dbContext.IdentityUsers.AsNoTracking().FirstOrDefaultAsync(x => x.Account == account, cancellationToken);
 
+    /// <summary>
+    /// 根据租户与账号获取后台用户。
+    /// </summary>
+    /// <param name="tenantId">租户 ID。</param>
+    /// <param name="account">账号。</param>
+    /// <param name="cancellationToken">取消标记。</param>
+    /// <returns>后台用户或 null。</returns>
+    public Task<IdentityUser?> FindByAccountAsync(long tenantId, string account, CancellationToken cancellationToken = default)
+    {
+        // 1. 标准化账号
+        var normalized = account.Trim();
+
+        // 2. 查询用户（强制租户隔离）
+        return dbContext.IdentityUsers
+            .AsNoTracking()
+            .FirstOrDefaultAsync(x => x.TenantId == tenantId && x.Account == normalized, cancellationToken);
+    }
+
     /// <summary>
     /// 判断账号是否存在。
     /// </summary>

src/Infrastructure/TakeoutSaaS.Infrastructure/Identity/Persistence/IdentityDbContext.cs

@@ -6,7 +6,6 @@ using TakeoutSaaS.Infrastructure.Common.Persistence;
 using TakeoutSaaS.Shared.Abstractions.Ids;
 using TakeoutSaaS.Shared.Abstractions.Security;
 using TakeoutSaaS.Shared.Abstractions.Tenancy;
-using Microsoft.AspNetCore.Http;
 
 namespace TakeoutSaaS.Infrastructure.Identity.Persistence;
 
@@ -17,9 +16,8 @@ public sealed class IdentityDbContext(
     DbContextOptions<IdentityDbContext> options,
     ITenantProvider tenantProvider,
     ICurrentUserAccessor? currentUserAccessor = null,
-    IIdGenerator? idGenerator = null,
-    IHttpContextAccessor? httpContextAccessor = null)
-    : TenantAwareDbContext(options, tenantProvider, currentUserAccessor, idGenerator, httpContextAccessor)
+    IIdGenerator? idGenerator = null)
+    : TenantAwareDbContext(options, tenantProvider, currentUserAccessor, idGenerator)
 {
     /// <summary>
     /// 管理后台用户集合。