feat: 管理端核心实体CRUD补齐

src/Application/TakeoutSaaS.Application/App/Stores/Handlers/GetStoreByIdQueryHandler.cs

@@ -0,0 +1,52 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Stores.Dto;
+using TakeoutSaaS.Application.App.Stores.Queries;
+using TakeoutSaaS.Domain.Stores.Entities;
+using TakeoutSaaS.Domain.Stores.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Stores.Handlers;
+
+/// <summary>
+/// 门店详情查询处理器。
+/// </summary>
+public sealed class GetStoreByIdQueryHandler(
+    IStoreRepository storeRepository,
+    ITenantProvider tenantProvider)
+    : IRequestHandler<GetStoreByIdQuery, StoreDto?>
+{
+    private readonly IStoreRepository _storeRepository = storeRepository;
+    private readonly ITenantProvider _tenantProvider = tenantProvider;
+
+    /// <inheritdoc />
+    public async Task<StoreDto?> Handle(GetStoreByIdQuery request, CancellationToken cancellationToken)
+    {
+        var tenantId = _tenantProvider.GetCurrentTenantId();
+        var store = await _storeRepository.FindByIdAsync(request.StoreId, tenantId, cancellationToken);
+        return store == null ? null : MapToDto(store);
+    }
+
+    private static StoreDto MapToDto(Store store) => new()
+    {
+        Id = store.Id,
+        TenantId = store.TenantId,
+        MerchantId = store.MerchantId,
+        Code = store.Code,
+        Name = store.Name,
+        Phone = store.Phone,
+        ManagerName = store.ManagerName,
+        Status = store.Status,
+        Province = store.Province,
+        City = store.City,
+        District = store.District,
+        Address = store.Address,
+        Longitude = store.Longitude,
+        Latitude = store.Latitude,
+        Announcement = store.Announcement,
+        Tags = store.Tags,
+        DeliveryRadiusKm = store.DeliveryRadiusKm,
+        SupportsDineIn = store.SupportsDineIn,
+        SupportsPickup = store.SupportsPickup,
+        SupportsDelivery = store.SupportsDelivery
+    };
+}