Revert "refactor: 清理租户API旧模块代码"

This reverts commit 992930a821.

src/Application/TakeoutSaaS.Application/App/Deliveries/Queries/SearchDeliveryOrdersQuery.cs

@@ -0,0 +1,42 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Deliveries.Dto;
+using TakeoutSaaS.Domain.Deliveries.Enums;
+using TakeoutSaaS.Shared.Abstractions.Results;
+
+namespace TakeoutSaaS.Application.App.Deliveries.Queries;
+
+/// <summary>
+/// 配送单列表查询。
+/// </summary>
+public sealed class SearchDeliveryOrdersQuery : IRequest<PagedResult<DeliveryOrderDto>>
+{
+    /// <summary>
+    /// 订单 ID（可选）。
+    /// </summary>
+    public long? OrderId { get; init; }
+
+    /// <summary>
+    /// 配送状态。
+    /// </summary>
+    public DeliveryStatus? Status { get; init; }
+
+    /// <summary>
+    /// 页码。
+    /// </summary>
+    public int Page { get; init; } = 1;
+
+    /// <summary>
+    /// 每页条数。
+    /// </summary>
+    public int PageSize { get; init; } = 20;
+
+    /// <summary>
+    /// 排序字段（createdAt/status/provider）。
+    /// </summary>
+    public string? SortBy { get; init; }
+
+    /// <summary>
+    /// 是否倒序。
+    /// </summary>
+    public bool SortDescending { get; init; } = true;
+}