feat: 完成会员消息触达后端模块

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

@@ -27,6 +27,23 @@ public sealed class EfMiniUserRepository(IdentityDbContext dbContext) : IMiniUse
     public Task<MiniUser?> FindByIdAsync(long id, CancellationToken cancellationToken = default)
         => dbContext.MiniUsers.AsNoTracking().FirstOrDefaultAsync(x => x.Id == id, cancellationToken);
 
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<MiniUser>> GetByIdsAsync(
+        IReadOnlyCollection<long> ids,
+        long tenantId,
+        CancellationToken cancellationToken = default)
+    {
+        if (ids.Count == 0)
+        {
+            return [];
+        }
+
+        return await dbContext.MiniUsers
+            .AsNoTracking()
+            .Where(x => x.TenantId == tenantId && ids.Contains(x.Id))
+            .ToListAsync(cancellationToken);
+    }
+
     /// <summary>
     /// 创建或更新小程序用户信息。
     /// </summary>