feat: 添加用户权限洞察查询与示例

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

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.EntityFrameworkCore;
@@ -18,4 +19,19 @@ public sealed class EfIdentityUserRepository(IdentityDbContext dbContext) : IIde
 
     public Task<IdentityUser?> FindByIdAsync(long userId, CancellationToken cancellationToken = default)
         => dbContext.IdentityUsers.AsNoTracking().FirstOrDefaultAsync(x => x.Id == userId, cancellationToken);
+
+    public async Task<IReadOnlyList<IdentityUser>> SearchAsync(long tenantId, string? keyword, CancellationToken cancellationToken = default)
+    {
+        var query = dbContext.IdentityUsers
+            .AsNoTracking()
+            .Where(x => x.TenantId == tenantId);
+
+        if (!string.IsNullOrWhiteSpace(keyword))
+        {
+            var normalized = keyword.Trim();
+            query = query.Where(x => x.Account.Contains(normalized) || x.DisplayName.Contains(normalized));
+        }
+
+        return await query.ToListAsync(cancellationToken);
+    }
 }