feat: 增加分页排序与FluentValidation

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

@@ -18,4 +18,24 @@ public sealed class SearchDeliveryOrdersQuery : IRequest<IReadOnlyList<DeliveryO
     /// 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;
 }