feat: 管理端核心实体CRUD补齐

src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/SearchDeliveryOrdersQueryHandler.cs

@@ -0,0 +1,43 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Deliveries.Dto;
+using TakeoutSaaS.Application.App.Deliveries.Queries;
+using TakeoutSaaS.Domain.Deliveries.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Deliveries.Handlers;
+
+/// <summary>
+/// 配送单列表查询处理器。
+/// </summary>
+public sealed class SearchDeliveryOrdersQueryHandler(
+    IDeliveryRepository deliveryRepository,
+    ITenantProvider tenantProvider)
+    : IRequestHandler<SearchDeliveryOrdersQuery, IReadOnlyList<DeliveryOrderDto>>
+{
+    private readonly IDeliveryRepository _deliveryRepository = deliveryRepository;
+    private readonly ITenantProvider _tenantProvider = tenantProvider;
+
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<DeliveryOrderDto>> Handle(SearchDeliveryOrdersQuery request, CancellationToken cancellationToken)
+    {
+        var tenantId = _tenantProvider.GetCurrentTenantId();
+        var orders = await _deliveryRepository.SearchAsync(tenantId, request.Status, request.OrderId, cancellationToken);
+
+        return orders.Select(order => new DeliveryOrderDto
+        {
+            Id = order.Id,
+            TenantId = order.TenantId,
+            OrderId = order.OrderId,
+            Provider = order.Provider,
+            ProviderOrderId = order.ProviderOrderId,
+            Status = order.Status,
+            DeliveryFee = order.DeliveryFee,
+            CourierName = order.CourierName,
+            CourierPhone = order.CourierPhone,
+            DispatchedAt = order.DispatchedAt,
+            PickedUpAt = order.PickedUpAt,
+            DeliveredAt = order.DeliveredAt,
+            FailureReason = order.FailureReason
+        }).ToList();
+    }
+}