diff --git a/src/Api/TakeoutSaaS.AdminApi/Controllers/ProductsController.cs b/src/Api/TakeoutSaaS.AdminApi/Controllers/ProductsController.cs
index 4fd43b3..3eb9fe1 100644
--- a/src/Api/TakeoutSaaS.AdminApi/Controllers/ProductsController.cs
+++ b/src/Api/TakeoutSaaS.AdminApi/Controllers/ProductsController.cs
@@ -171,4 +171,89 @@ public sealed class ProductsController(IMediator mediator) : BaseApiController
             ? ApiResponse<ProductDto>.Error(ErrorCodes.NotFound, "商品不存在")
             : ApiResponse<ProductDto>.Ok(result);
     }
+
+    /// <summary>
+    /// 替换商品 SKU。
+    /// </summary>
+    [HttpPut("{productId:long}/skus")]
+    [PermissionAuthorize("product-sku:update")]
+    [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<ProductSkuDto>>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<IReadOnlyList<ProductSkuDto>>> ReplaceSkus(long productId, [FromBody] ReplaceProductSkusCommand command, CancellationToken cancellationToken)
+    {
+        if (command.ProductId == 0)
+        {
+            command = command with { ProductId = productId };
+        }
+
+        var result = await mediator.Send(command, cancellationToken);
+        return ApiResponse<IReadOnlyList<ProductSkuDto>>.Ok(result);
+    }
+
+    /// <summary>
+    /// 替换商品规格。
+    /// </summary>
+    [HttpPut("{productId:long}/attributes")]
+    [PermissionAuthorize("product-attr:update")]
+    [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<ProductAttributeGroupDto>>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<IReadOnlyList<ProductAttributeGroupDto>>> ReplaceAttributes(long productId, [FromBody] ReplaceProductAttributesCommand command, CancellationToken cancellationToken)
+    {
+        if (command.ProductId == 0)
+        {
+            command = command with { ProductId = productId };
+        }
+
+        var result = await mediator.Send(command, cancellationToken);
+        return ApiResponse<IReadOnlyList<ProductAttributeGroupDto>>.Ok(result);
+    }
+
+    /// <summary>
+    /// 替换商品加料。
+    /// </summary>
+    [HttpPut("{productId:long}/addons")]
+    [PermissionAuthorize("product-addon:update")]
+    [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<ProductAddonGroupDto>>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<IReadOnlyList<ProductAddonGroupDto>>> ReplaceAddons(long productId, [FromBody] ReplaceProductAddonsCommand command, CancellationToken cancellationToken)
+    {
+        if (command.ProductId == 0)
+        {
+            command = command with { ProductId = productId };
+        }
+
+        var result = await mediator.Send(command, cancellationToken);
+        return ApiResponse<IReadOnlyList<ProductAddonGroupDto>>.Ok(result);
+    }
+
+    /// <summary>
+    /// 替换商品媒资。
+    /// </summary>
+    [HttpPut("{productId:long}/media")]
+    [PermissionAuthorize("product-media:update")]
+    [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<ProductMediaAssetDto>>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<IReadOnlyList<ProductMediaAssetDto>>> ReplaceMedia(long productId, [FromBody] ReplaceProductMediaCommand command, CancellationToken cancellationToken)
+    {
+        if (command.ProductId == 0)
+        {
+            command = command with { ProductId = productId };
+        }
+
+        var result = await mediator.Send(command, cancellationToken);
+        return ApiResponse<IReadOnlyList<ProductMediaAssetDto>>.Ok(result);
+    }
+
+    /// <summary>
+    /// 替换商品价格策略。
+    /// </summary>
+    [HttpPut("{productId:long}/pricing-rules")]
+    [PermissionAuthorize("product-pricing:update")]
+    [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<ProductPricingRuleDto>>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<IReadOnlyList<ProductPricingRuleDto>>> ReplacePricingRules(long productId, [FromBody] ReplaceProductPricingRulesCommand command, CancellationToken cancellationToken)
+    {
+        if (command.ProductId == 0)
+        {
+            command = command with { ProductId = productId };
+        }
+
+        var result = await mediator.Send(command, cancellationToken);
+        return ApiResponse<IReadOnlyList<ProductPricingRuleDto>>.Ok(result);
+    }
 }
diff --git a/src/Api/TakeoutSaaS.AdminApi/appsettings.Seed.Development.json b/src/Api/TakeoutSaaS.AdminApi/appsettings.Seed.Development.json
index 47d4125..1af6231 100644
--- a/src/Api/TakeoutSaaS.AdminApi/appsettings.Seed.Development.json
+++ b/src/Api/TakeoutSaaS.AdminApi/appsettings.Seed.Development.json
@@ -113,6 +113,16 @@
             "product:update",
             "product:delete",
             "product:publish",
+            "product-sku:read",
+            "product-sku:update",
+            "product-attr:read",
+            "product-attr:update",
+            "product-addon:read",
+            "product-addon:update",
+            "product-media:read",
+            "product-media:update",
+            "product-pricing:read",
+            "product-pricing:update",
             "order:create",
             "order:read",
             "order:update",
@@ -197,6 +207,17 @@
             "product:read",
             "product:update",
             "product:delete",
+            "product:publish",
+            "product-sku:read",
+            "product-sku:update",
+            "product-attr:read",
+            "product-attr:update",
+            "product-addon:read",
+            "product-addon:update",
+            "product-media:read",
+            "product-media:update",
+            "product-pricing:read",
+            "product-pricing:update",
             "order:create",
             "order:read",
             "order:update",
@@ -242,6 +263,17 @@
             "product:create",
             "product:read",
             "product:update",
+            "product:publish",
+            "product-sku:read",
+            "product-sku:update",
+            "product-attr:read",
+            "product-attr:update",
+            "product-addon:read",
+            "product-addon:update",
+            "product-media:read",
+            "product-media:update",
+            "product-pricing:read",
+            "product-pricing:update",
             "order:create",
             "order:read",
             "order:update",
@@ -331,6 +363,17 @@
             "product:read",
             "product:update",
             "product:delete",
+            "product:publish",
+            "product-sku:read",
+            "product-sku:update",
+            "product-attr:read",
+            "product-attr:update",
+            "product-addon:read",
+            "product-addon:update",
+            "product-media:read",
+            "product-media:update",
+            "product-pricing:read",
+            "product-pricing:update",
             "order:create",
             "order:read",
             "order:update",
diff --git a/src/Api/TakeoutSaaS.MiniApi/Controllers/MenusController.cs b/src/Api/TakeoutSaaS.MiniApi/Controllers/MenusController.cs
new file mode 100644
index 0000000..549db99
--- /dev/null
+++ b/src/Api/TakeoutSaaS.MiniApi/Controllers/MenusController.cs
@@ -0,0 +1,38 @@
+using System;
+using MediatR;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using TakeoutSaaS.Application.App.Products.Dto;
+using TakeoutSaaS.Application.App.Products.Queries;
+using TakeoutSaaS.Shared.Abstractions.Results;
+using TakeoutSaaS.Shared.Web.Api;
+
+namespace TakeoutSaaS.MiniApi.Controllers;
+
+/// <summary>
+/// 小程序端菜单查询。
+/// </summary>
+[ApiVersion("1.0")]
+[Authorize]
+[Route("api/mini/v{version:apiVersion}/stores/{storeId:long}/menu")]
+public sealed class MenusController(IMediator mediator) : BaseApiController
+{
+    /// <summary>
+    /// 获取门店菜单（含分类与商品详情）。
+    /// </summary>
+    [HttpGet]
+    [ProducesResponseType(typeof(ApiResponse<StoreMenuDto>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<StoreMenuDto>> GetMenu(long storeId, [FromQuery] DateTime? updatedAfter, CancellationToken cancellationToken)
+    {
+        // 1. 组装查询
+        var query = new GetStoreMenuQuery
+        {
+            StoreId = storeId,
+            UpdatedAfter = updatedAfter
+        };
+        // 2. 拉取菜单
+        var result = await mediator.Send(query, cancellationToken);
+        return ApiResponse<StoreMenuDto>.Ok(result);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductAddonsCommand.cs b/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductAddonsCommand.cs
new file mode 100644
index 0000000..41ec401
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductAddonsCommand.cs
@@ -0,0 +1,20 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Products.Dto;
+
+namespace TakeoutSaaS.Application.App.Products.Commands;
+
+/// <summary>
+/// 替换商品加料命令。
+/// </summary>
+public sealed record ReplaceProductAddonsCommand : IRequest<IReadOnlyList<ProductAddonGroupDto>>
+{
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    public long ProductId { get; init; }
+
+    /// <summary>
+    /// 加料组。
+    /// </summary>
+    public IReadOnlyList<ProductAddonGroupDto> AddonGroups { get; init; } = [];
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductAttributesCommand.cs b/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductAttributesCommand.cs
new file mode 100644
index 0000000..4ec120f
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductAttributesCommand.cs
@@ -0,0 +1,20 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Products.Dto;
+
+namespace TakeoutSaaS.Application.App.Products.Commands;
+
+/// <summary>
+/// 替换商品规格命令。
+/// </summary>
+public sealed record ReplaceProductAttributesCommand : IRequest<IReadOnlyList<ProductAttributeGroupDto>>
+{
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    public long ProductId { get; init; }
+
+    /// <summary>
+    /// 规格组。
+    /// </summary>
+    public IReadOnlyList<ProductAttributeGroupDto> AttributeGroups { get; init; } = [];
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductMediaCommand.cs b/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductMediaCommand.cs
new file mode 100644
index 0000000..6e099a0
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductMediaCommand.cs
@@ -0,0 +1,20 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Products.Dto;
+
+namespace TakeoutSaaS.Application.App.Products.Commands;
+
+/// <summary>
+/// 替换商品媒资命令。
+/// </summary>
+public sealed record ReplaceProductMediaCommand : IRequest<IReadOnlyList<ProductMediaAssetDto>>
+{
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    public long ProductId { get; init; }
+
+    /// <summary>
+    /// 媒资列表。
+    /// </summary>
+    public IReadOnlyList<ProductMediaAssetDto> MediaAssets { get; init; } = [];
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductPricingRulesCommand.cs b/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductPricingRulesCommand.cs
new file mode 100644
index 0000000..067b11f
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductPricingRulesCommand.cs
@@ -0,0 +1,20 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Products.Dto;
+
+namespace TakeoutSaaS.Application.App.Products.Commands;
+
+/// <summary>
+/// 替换商品价格策略命令。
+/// </summary>
+public sealed record ReplaceProductPricingRulesCommand : IRequest<IReadOnlyList<ProductPricingRuleDto>>
+{
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    public long ProductId { get; init; }
+
+    /// <summary>
+    /// 价格策略。
+    /// </summary>
+    public IReadOnlyList<ProductPricingRuleDto> PricingRules { get; init; } = [];
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductSkusCommand.cs b/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductSkusCommand.cs
new file mode 100644
index 0000000..8f82fdf
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Commands/ReplaceProductSkusCommand.cs
@@ -0,0 +1,20 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Products.Dto;
+
+namespace TakeoutSaaS.Application.App.Products.Commands;
+
+/// <summary>
+/// 替换商品 SKU 命令。
+/// </summary>
+public sealed record ReplaceProductSkusCommand : IRequest<IReadOnlyList<ProductSkuDto>>
+{
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    public long ProductId { get; init; }
+
+    /// <summary>
+    /// SKU 列表。
+    /// </summary>
+    public IReadOnlyList<ProductSkuDto> Skus { get; init; } = [];
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductCategoryMenuDto.cs b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductCategoryMenuDto.cs
new file mode 100644
index 0000000..d758957
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductCategoryMenuDto.cs
@@ -0,0 +1,48 @@
+using System.Collections.Generic;
+using System.Text.Json.Serialization;
+using TakeoutSaaS.Shared.Abstractions.Serialization;
+
+namespace TakeoutSaaS.Application.App.Products.Dto;
+
+/// <summary>
+/// 门店菜单分类 DTO。
+/// </summary>
+public sealed record ProductCategoryMenuDto
+{
+    /// <summary>
+    /// 分类 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long Id { get; init; }
+
+    /// <summary>
+    /// 门店 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long StoreId { get; init; }
+
+    /// <summary>
+    /// 分类名称。
+    /// </summary>
+    public string Name { get; init; } = string.Empty;
+
+    /// <summary>
+    /// 分类描述。
+    /// </summary>
+    public string? Description { get; init; }
+
+    /// <summary>
+    /// 排序。
+    /// </summary>
+    public int SortOrder { get; init; }
+
+    /// <summary>
+    /// 是否启用。
+    /// </summary>
+    public bool IsEnabled { get; init; }
+
+    /// <summary>
+    /// 分类下商品列表。
+    /// </summary>
+    public IReadOnlyList<ProductDetailDto> Products { get; init; } = [];
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Dto/StoreMenuDto.cs b/src/Application/TakeoutSaaS.Application/App/Products/Dto/StoreMenuDto.cs
new file mode 100644
index 0000000..5429d43
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Dto/StoreMenuDto.cs
@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Text.Json.Serialization;
+using TakeoutSaaS.Shared.Abstractions.Serialization;
+
+namespace TakeoutSaaS.Application.App.Products.Dto;
+
+/// <summary>
+/// 门店菜单数据传输对象。
+/// </summary>
+public sealed record StoreMenuDto
+{
+    /// <summary>
+    /// 门店 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long StoreId { get; init; }
+
+    /// <summary>
+    /// 分类与商品集合。
+    /// </summary>
+    public IReadOnlyList<ProductCategoryMenuDto> Categories { get; init; } = [];
+
+    /// <summary>
+    /// 菜单生成时间（UTC）。
+    /// </summary>
+    public DateTime GeneratedAt { get; init; }
+
+    /// <summary>
+    /// 客户端请求的增量时间（UTC）。
+    /// </summary>
+    public DateTime? UpdatedAfter { get; init; }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductDetailQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductDetailQueryHandler.cs
index 5445bb0..828f1c8 100644
--- a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductDetailQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductDetailQueryHandler.cs
@@ -37,21 +37,25 @@ public sealed class GetProductDetailQueryHandler(
         await Task.WhenAll(skusTask, attrGroupsTask, attrOptionsTask, addonGroupsTask, addonOptionsTask, mediaTask, pricingTask);
 
         // 3. 组装 DTO
-        var attrOptions = attrOptionsTask.Result.ToLookup(x => x.AttributeGroupId);
-        var addonOptions = addonOptionsTask.Result.ToLookup(x => x.AddonGroupId);
-
+        var skus = await skusTask;
+        var attrGroups = await attrGroupsTask;
+        var attrOptions = (await attrOptionsTask).ToLookup(x => x.AttributeGroupId);
+        var addonGroups = await addonGroupsTask;
+        var addonOptions = (await addonOptionsTask).ToLookup(x => x.AddonGroupId);
+        var mediaAssets = await mediaTask;
+        var pricingRules = await pricingTask;
         var detail = new ProductDetailDto
         {
             Product = ProductMapping.ToDto(product),
-            Skus = skusTask.Result.Select(ProductMapping.ToDto).ToList(),
-            AttributeGroups = attrGroupsTask.Result
+            Skus = skus.Select(ProductMapping.ToDto).ToList(),
+            AttributeGroups = attrGroups
                 .Select(g => ProductMapping.ToDto(g, attrOptions[g.Id].ToList()))
                 .ToList(),
-            AddonGroups = addonGroupsTask.Result
+            AddonGroups = addonGroups
                 .Select(g => ProductMapping.ToDto(g, addonOptions[g.Id].ToList()))
                 .ToList(),
-            MediaAssets = mediaTask.Result.Select(ProductMapping.ToDto).ToList(),
-            PricingRules = pricingTask.Result.Select(ProductMapping.ToDto).ToList()
+            MediaAssets = mediaAssets.Select(ProductMapping.ToDto).ToList(),
+            PricingRules = pricingRules.Select(ProductMapping.ToDto).ToList()
         };
 
         return detail;
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetStoreMenuQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetStoreMenuQueryHandler.cs
new file mode 100644
index 0000000..bde1465
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetStoreMenuQueryHandler.cs
@@ -0,0 +1,136 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using MediatR;
+using Microsoft.Extensions.Logging;
+using TakeoutSaaS.Application.App.Products.Dto;
+using TakeoutSaaS.Application.App.Products.Queries;
+using TakeoutSaaS.Domain.Products.Entities;
+using TakeoutSaaS.Domain.Products.Enums;
+using TakeoutSaaS.Domain.Products.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Products.Handlers;
+
+/// <summary>
+/// 门店菜单查询处理器。
+/// </summary>
+public sealed class GetStoreMenuQueryHandler(
+    IProductRepository productRepository,
+    ITenantProvider tenantProvider,
+    ILogger<GetStoreMenuQueryHandler> logger)
+    : IRequestHandler<GetStoreMenuQuery, StoreMenuDto>
+{
+    /// <inheritdoc />
+    public async Task<StoreMenuDto> Handle(GetStoreMenuQuery request, CancellationToken cancellationToken)
+    {
+        // 1. 准备上下文
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var updatedAfterUtc = request.UpdatedAfter?.ToUniversalTime();
+        // 2. 获取分类
+        var categories = await productRepository.GetCategoriesByStoreAsync(tenantId, request.StoreId, true, cancellationToken);
+        // 3. 读取上架商品（支持增量）
+        var products = await productRepository.SearchAsync(tenantId, request.StoreId, null, ProductStatus.OnSale, cancellationToken, updatedAfterUtc);
+        if (products.Count == 0)
+        {
+            logger.LogInformation("门店 {StoreId} 没有上架商品，返回空菜单", request.StoreId);
+            return new StoreMenuDto
+            {
+                StoreId = request.StoreId,
+                GeneratedAt = DateTime.UtcNow,
+                UpdatedAfter = updatedAfterUtc,
+                Categories = categories
+                    .OrderBy(x => x.SortOrder)
+                    .Select(category => new ProductCategoryMenuDto
+                    {
+                        Id = category.Id,
+                        StoreId = category.StoreId,
+                        Name = category.Name,
+                        Description = category.Description,
+                        SortOrder = category.SortOrder,
+                        IsEnabled = category.IsEnabled,
+                        Products = []
+                    })
+                    .ToList()
+            };
+        }
+
+        // 4. 并发加载子表数据
+        var productIds = products.Select(x => x.Id).ToList();
+        var skusTask = productRepository.GetSkusByProductIdsAsync(productIds, tenantId, cancellationToken);
+        var attributeGroupsTask = productRepository.GetAttributeGroupsByProductIdsAsync(productIds, tenantId, cancellationToken);
+        var addonGroupsTask = productRepository.GetAddonGroupsByProductIdsAsync(productIds, tenantId, cancellationToken);
+        var mediaTask = productRepository.GetMediaAssetsByProductIdsAsync(productIds, tenantId, cancellationToken);
+        var pricingTask = productRepository.GetPricingRulesByProductIdsAsync(productIds, tenantId, cancellationToken);
+        await Task.WhenAll(skusTask, attributeGroupsTask, addonGroupsTask, mediaTask, pricingTask);
+        var attributeGroups = await attributeGroupsTask;
+        var addonGroups = await addonGroupsTask;
+        // 批量读取规格与加料选项
+        var attributeOptionsTask = attributeGroups.Count == 0
+            ? Task.FromResult<IReadOnlyList<ProductAttributeOption>>(Array.Empty<ProductAttributeOption>())
+            : productRepository.GetAttributeOptionsByGroupIdsAsync(attributeGroups.Select(x => x.Id).ToList(), tenantId, cancellationToken);
+        var addonOptionsTask = addonGroups.Count == 0
+            ? Task.FromResult<IReadOnlyList<ProductAddonOption>>(Array.Empty<ProductAddonOption>())
+            : productRepository.GetAddonOptionsByGroupIdsAsync(addonGroups.Select(x => x.Id).ToList(), tenantId, cancellationToken);
+        await Task.WhenAll(attributeOptionsTask, addonOptionsTask);
+
+        // 5. 建立查找表
+        var skuLookup = (await skusTask).ToLookup(x => x.ProductId);
+        var attrGroupLookup = attributeGroups.ToLookup(x => x.ProductId);
+        var attrOptionLookup = (await attributeOptionsTask).ToLookup(x => x.AttributeGroupId);
+        var addonGroupLookup = addonGroups.ToLookup(x => x.ProductId);
+        var addonOptionLookup = (await addonOptionsTask).ToLookup(x => x.AddonGroupId);
+        var mediaLookup = (await mediaTask).ToLookup(x => x.ProductId);
+        var pricingLookup = (await pricingTask).ToLookup(x => x.ProductId);
+        // 6. 组装商品详情
+        var productDetails = products.ToDictionary(
+            product => product.Id,
+            product =>
+            {
+                var attributeDtos = attrGroupLookup[product.Id]
+                    .Select(group => ProductMapping.ToDto(group, attrOptionLookup[group.Id].ToList()))
+                    .ToList();
+                var addonDtos = addonGroupLookup[product.Id]
+                    .Select(group => ProductMapping.ToDto(group, addonOptionLookup[group.Id].ToList()))
+                    .ToList();
+                return new ProductDetailDto
+                {
+                    Product = ProductMapping.ToDto(product),
+                    Skus = skuLookup[product.Id].Select(ProductMapping.ToDto).ToList(),
+                    AttributeGroups = attributeDtos,
+                    AddonGroups = addonDtos,
+                    MediaAssets = mediaLookup[product.Id].Select(ProductMapping.ToDto).ToList(),
+                    PricingRules = pricingLookup[product.Id].Select(ProductMapping.ToDto).ToList()
+                };
+            });
+        // 7. 组装分类菜单
+        var productsByCategory = products.ToLookup(x => x.CategoryId);
+        var categoryMenu = categories
+            .OrderBy(x => x.SortOrder)
+            .Select(category =>
+            {
+                var categoryProducts = productsByCategory[category.Id]
+                    .Select(p => productDetails[p.Id])
+                    .ToList();
+                return new ProductCategoryMenuDto
+                {
+                    Id = category.Id,
+                    StoreId = category.StoreId,
+                    Name = category.Name,
+                    Description = category.Description,
+                    SortOrder = category.SortOrder,
+                    IsEnabled = category.IsEnabled,
+                    Products = categoryProducts
+                };
+            })
+            .ToList();
+        return new StoreMenuDto
+        {
+            StoreId = request.StoreId,
+            GeneratedAt = DateTime.UtcNow,
+            UpdatedAfter = updatedAfterUtc,
+            Categories = categoryMenu
+        };
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductAddonsCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductAddonsCommandHandler.cs
new file mode 100644
index 0000000..af61144
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductAddonsCommandHandler.cs
@@ -0,0 +1,74 @@
+using MediatR;
+using Microsoft.Extensions.Logging;
+using TakeoutSaaS.Application.App.Products.Commands;
+using TakeoutSaaS.Application.App.Products.Dto;
+using TakeoutSaaS.Domain.Products.Entities;
+using TakeoutSaaS.Domain.Products.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Constants;
+using TakeoutSaaS.Shared.Abstractions.Exceptions;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Products.Handlers;
+
+/// <summary>
+/// 替换加料处理器。
+/// </summary>
+public sealed class ReplaceProductAddonsCommandHandler(
+    IProductRepository productRepository,
+    ITenantProvider tenantProvider,
+    ILogger<ReplaceProductAddonsCommandHandler> logger)
+    : IRequestHandler<ReplaceProductAddonsCommand, IReadOnlyList<ProductAddonGroupDto>>
+{
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductAddonGroupDto>> Handle(ReplaceProductAddonsCommand request, CancellationToken cancellationToken)
+    {
+        // 1. 校验商品
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var product = await productRepository.FindByIdAsync(request.ProductId, tenantId, cancellationToken);
+        if (product is null)
+        {
+            throw new BusinessException(ErrorCodes.NotFound, "商品不存在");
+        }
+
+        // 2. 校验组名唯一
+        var names = request.AddonGroups.Select(x => x.Name.Trim()).ToList();
+        if (names.Count != names.Distinct(StringComparer.OrdinalIgnoreCase).Count())
+        {
+            throw new BusinessException(ErrorCodes.Conflict, "加料组名称重复");
+        }
+
+        // 3. 替换
+        await productRepository.RemoveAddonGroupsAsync(request.ProductId, tenantId, cancellationToken);
+        // 重新插入组
+        var groupEntities = request.AddonGroups.Select(g => new ProductAddonGroup
+        {
+            ProductId = request.ProductId,
+            Name = g.Name.Trim(),
+            MinSelect = g.MinSelect,
+            MaxSelect = g.MaxSelect,
+            SortOrder = g.SortOrder
+        }).ToList();
+        await productRepository.AddAddonGroupsAsync(groupEntities, [], cancellationToken);
+        await productRepository.SaveChangesAsync(cancellationToken);
+        // 重新建立组与请求的映射
+        var groupIdLookup = groupEntities.Zip(request.AddonGroups, (entity, dto) => (entity, dto))
+            .ToDictionary(x => x.dto, x => x.entity.Id);
+        // 构建选项实体
+        var optionEntities = request.AddonGroups
+            .SelectMany(dto => dto.Options.Select(o => new ProductAddonOption
+            {
+                AddonGroupId = groupIdLookup[dto],
+                Name = o.Name.Trim(),
+                ExtraPrice = o.ExtraPrice,
+                SortOrder = o.SortOrder
+            }))
+            .ToList();
+        await productRepository.AddAddonGroupsAsync([], optionEntities, cancellationToken);
+        await productRepository.SaveChangesAsync(cancellationToken);
+        logger.LogInformation("替换商品 {ProductId} 加料组 {Count} 个", request.ProductId, groupEntities.Count);
+
+        return groupEntities
+            .Select(g => ProductMapping.ToDto(g, optionEntities.Where(o => o.AddonGroupId == g.Id).ToList()))
+            .ToList();
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductAttributesCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductAttributesCommandHandler.cs
new file mode 100644
index 0000000..9cef4d1
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductAttributesCommandHandler.cs
@@ -0,0 +1,77 @@
+using MediatR;
+using Microsoft.Extensions.Logging;
+using TakeoutSaaS.Application.App.Products.Commands;
+using TakeoutSaaS.Application.App.Products.Dto;
+using TakeoutSaaS.Domain.Products.Entities;
+using TakeoutSaaS.Domain.Products.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Constants;
+using TakeoutSaaS.Shared.Abstractions.Exceptions;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Products.Handlers;
+
+/// <summary>
+/// 替换规格处理器。
+/// </summary>
+public sealed class ReplaceProductAttributesCommandHandler(
+    IProductRepository productRepository,
+    ITenantProvider tenantProvider,
+    ILogger<ReplaceProductAttributesCommandHandler> logger)
+    : IRequestHandler<ReplaceProductAttributesCommand, IReadOnlyList<ProductAttributeGroupDto>>
+{
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductAttributeGroupDto>> Handle(ReplaceProductAttributesCommand request, CancellationToken cancellationToken)
+    {
+        // 1. 校验商品
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var product = await productRepository.FindByIdAsync(request.ProductId, tenantId, cancellationToken);
+        if (product is null)
+        {
+            throw new BusinessException(ErrorCodes.NotFound, "商品不存在");
+        }
+
+        // 2. 组名唯一
+        var groupNames = request.AttributeGroups.Select(x => x.Name.Trim()).ToList();
+        if (groupNames.Count != groupNames.Distinct(StringComparer.OrdinalIgnoreCase).Count())
+        {
+            throw new BusinessException(ErrorCodes.Conflict, "规格组名称重复");
+        }
+
+        // 3. 替换
+        await productRepository.RemoveAttributeGroupsAsync(request.ProductId, tenantId, cancellationToken);
+
+        var groupEntities = request.AttributeGroups.Select(g => new ProductAttributeGroup
+        {
+            ProductId = request.ProductId,
+            Name = g.Name.Trim(),
+            SelectionType = (Domain.Products.Enums.AttributeSelectionType)g.SelectionType,
+            SortOrder = g.SortOrder
+        }).ToList();
+
+        // 4. 持久化（分批保障 FK 正确）
+        await productRepository.AddAttributeGroupsAsync(groupEntities, [], cancellationToken);
+        await productRepository.SaveChangesAsync(cancellationToken);
+
+        // 重新建立选项的 GroupId 映射
+        var groupIdLookup = groupEntities.Zip(request.AttributeGroups, (entity, dto) => (entity, dto))
+            .ToDictionary(x => x.dto, x => x.entity.Id);
+
+        var optionEntities = request.AttributeGroups
+            .SelectMany(dto => dto.Options.Select(o => new ProductAttributeOption
+            {
+                AttributeGroupId = groupIdLookup[dto],
+                Name = o.Name.Trim(),
+                SortOrder = o.SortOrder
+            }))
+            .ToList();
+
+        await productRepository.AddAttributeGroupsAsync([], optionEntities, cancellationToken);
+        await productRepository.SaveChangesAsync(cancellationToken);
+        logger.LogInformation("替换商品 {ProductId} 规格组 {GroupCount} 个", request.ProductId, groupEntities.Count);
+
+        // 5. 返回 DTO
+        return groupEntities
+            .Select(g => ProductMapping.ToDto(g, optionEntities.Where(o => o.AttributeGroupId == g.Id).ToList()))
+            .ToList();
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductMediaCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductMediaCommandHandler.cs
new file mode 100644
index 0000000..4c704f4
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductMediaCommandHandler.cs
@@ -0,0 +1,51 @@
+using MediatR;
+using Microsoft.Extensions.Logging;
+using TakeoutSaaS.Application.App.Products.Commands;
+using TakeoutSaaS.Application.App.Products.Dto;
+using TakeoutSaaS.Domain.Products.Entities;
+using TakeoutSaaS.Domain.Products.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Constants;
+using TakeoutSaaS.Shared.Abstractions.Exceptions;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Products.Handlers;
+
+/// <summary>
+/// 替换媒资处理器。
+/// </summary>
+public sealed class ReplaceProductMediaCommandHandler(
+    IProductRepository productRepository,
+    ITenantProvider tenantProvider,
+    ILogger<ReplaceProductMediaCommandHandler> logger)
+    : IRequestHandler<ReplaceProductMediaCommand, IReadOnlyList<ProductMediaAssetDto>>
+{
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductMediaAssetDto>> Handle(ReplaceProductMediaCommand request, CancellationToken cancellationToken)
+    {
+        // 1. 校验商品
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var product = await productRepository.FindByIdAsync(request.ProductId, tenantId, cancellationToken);
+        if (product is null)
+        {
+            throw new BusinessException(ErrorCodes.NotFound, "商品不存在");
+        }
+
+        // 2. 替换
+        await productRepository.RemoveMediaAssetsAsync(request.ProductId, tenantId, cancellationToken);
+
+        var assets = request.MediaAssets.Select(a => new ProductMediaAsset
+        {
+            ProductId = request.ProductId,
+            MediaType = a.MediaType,
+            Url = a.Url.Trim(),
+            Caption = a.Caption?.Trim(),
+            SortOrder = a.SortOrder
+        }).ToList();
+
+        await productRepository.AddMediaAssetsAsync(assets, cancellationToken);
+        await productRepository.SaveChangesAsync(cancellationToken);
+        logger.LogInformation("替换商品 {ProductId} 媒资 {Count} 条", request.ProductId, assets.Count);
+
+        return assets.Select(ProductMapping.ToDto).ToList();
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductPricingRulesCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductPricingRulesCommandHandler.cs
new file mode 100644
index 0000000..8c02739
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductPricingRulesCommandHandler.cs
@@ -0,0 +1,52 @@
+using MediatR;
+using Microsoft.Extensions.Logging;
+using TakeoutSaaS.Application.App.Products.Commands;
+using TakeoutSaaS.Application.App.Products.Dto;
+using TakeoutSaaS.Domain.Products.Entities;
+using TakeoutSaaS.Domain.Products.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Constants;
+using TakeoutSaaS.Shared.Abstractions.Exceptions;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Products.Handlers;
+
+/// <summary>
+/// 替换价格策略处理器。
+/// </summary>
+public sealed class ReplaceProductPricingRulesCommandHandler(
+    IProductRepository productRepository,
+    ITenantProvider tenantProvider,
+    ILogger<ReplaceProductPricingRulesCommandHandler> logger)
+    : IRequestHandler<ReplaceProductPricingRulesCommand, IReadOnlyList<ProductPricingRuleDto>>
+{
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductPricingRuleDto>> Handle(ReplaceProductPricingRulesCommand request, CancellationToken cancellationToken)
+    {
+        // 1. 校验商品
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var product = await productRepository.FindByIdAsync(request.ProductId, tenantId, cancellationToken);
+        if (product is null)
+        {
+            throw new BusinessException(ErrorCodes.NotFound, "商品不存在");
+        }
+
+        // 2. 替换
+        await productRepository.RemovePricingRulesAsync(request.ProductId, tenantId, cancellationToken);
+
+        var rules = request.PricingRules.Select(r => new ProductPricingRule
+        {
+            ProductId = request.ProductId,
+            RuleType = r.RuleType,
+            ConditionsJson = r.ConditionsJson.Trim(),
+            Price = r.Price,
+            WeekdaysJson = r.WeekdaysJson,
+            SortOrder = 0
+        }).ToList();
+
+        await productRepository.AddPricingRulesAsync(rules, cancellationToken);
+        await productRepository.SaveChangesAsync(cancellationToken);
+        logger.LogInformation("替换商品 {ProductId} 价格策略 {Count} 条", request.ProductId, rules.Count);
+
+        return rules.Select(ProductMapping.ToDto).ToList();
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductSkusCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductSkusCommandHandler.cs
new file mode 100644
index 0000000..9f62d45
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/ReplaceProductSkusCommandHandler.cs
@@ -0,0 +1,61 @@
+using MediatR;
+using Microsoft.Extensions.Logging;
+using TakeoutSaaS.Application.App.Products.Commands;
+using TakeoutSaaS.Application.App.Products.Dto;
+using TakeoutSaaS.Domain.Products.Entities;
+using TakeoutSaaS.Domain.Products.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Constants;
+using TakeoutSaaS.Shared.Abstractions.Exceptions;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Products.Handlers;
+
+/// <summary>
+/// 替换 SKU 处理器。
+/// </summary>
+public sealed class ReplaceProductSkusCommandHandler(
+    IProductRepository productRepository,
+    ITenantProvider tenantProvider,
+    ILogger<ReplaceProductSkusCommandHandler> logger)
+    : IRequestHandler<ReplaceProductSkusCommand, IReadOnlyList<ProductSkuDto>>
+{
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductSkuDto>> Handle(ReplaceProductSkusCommand request, CancellationToken cancellationToken)
+    {
+        // 1. 校验商品存在
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var product = await productRepository.FindByIdAsync(request.ProductId, tenantId, cancellationToken);
+        if (product is null)
+        {
+            throw new BusinessException(ErrorCodes.NotFound, "商品不存在");
+        }
+
+        // 2. 校验 SKU 唯一性
+        var codes = request.Skus.Select(x => x.SkuCode.Trim()).ToList();
+        if (codes.Count != codes.Distinct(StringComparer.OrdinalIgnoreCase).Count())
+        {
+            throw new BusinessException(ErrorCodes.Conflict, "SKU 编码重复");
+        }
+
+        // 3. 替换
+        await productRepository.RemoveSkusAsync(request.ProductId, tenantId, cancellationToken);
+        var entities = request.Skus.Select(x => new ProductSku
+        {
+            ProductId = request.ProductId,
+            SkuCode = x.SkuCode.Trim(),
+            Barcode = x.Barcode?.Trim(),
+            Price = x.Price,
+            OriginalPrice = x.OriginalPrice,
+            StockQuantity = x.StockQuantity,
+            Weight = x.Weight,
+            AttributesJson = x.AttributesJson ?? string.Empty,
+            SortOrder = x.SortOrder
+        }).ToList();
+
+        await productRepository.AddSkusAsync(entities, cancellationToken);
+        await productRepository.SaveChangesAsync(cancellationToken);
+        logger.LogInformation("替换商品 {ProductId} 的 SKU 数量 {Count}", request.ProductId, entities.Count);
+
+        return entities.Select(ProductMapping.ToDto).ToList();
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Queries/GetStoreMenuQuery.cs b/src/Application/TakeoutSaaS.Application/App/Products/Queries/GetStoreMenuQuery.cs
new file mode 100644
index 0000000..472806b
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Queries/GetStoreMenuQuery.cs
@@ -0,0 +1,21 @@
+using System;
+using MediatR;
+using TakeoutSaaS.Application.App.Products.Dto;
+
+namespace TakeoutSaaS.Application.App.Products.Queries;
+
+/// <summary>
+/// 获取门店菜单查询。
+/// </summary>
+public sealed record GetStoreMenuQuery : IRequest<StoreMenuDto>
+{
+    /// <summary>
+    /// 门店 ID。
+    /// </summary>
+    public long StoreId { get; init; }
+
+    /// <summary>
+    /// 增量时间（UTC）。
+    /// </summary>
+    public DateTime? UpdatedAfter { get; init; }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductAddonsCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductAddonsCommandValidator.cs
new file mode 100644
index 0000000..37f52a8
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductAddonsCommandValidator.cs
@@ -0,0 +1,31 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Products.Commands;
+
+namespace TakeoutSaaS.Application.App.Products.Validators;
+
+/// <summary>
+/// 替换加料验证器。
+/// </summary>
+public sealed class ReplaceProductAddonsCommandValidator : AbstractValidator<ReplaceProductAddonsCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public ReplaceProductAddonsCommandValidator()
+    {
+        RuleFor(x => x.ProductId).GreaterThan(0);
+        RuleForEach(x => x.AddonGroups).ChildRules(group =>
+        {
+            group.RuleFor(x => x.Name).NotEmpty().MaximumLength(64);
+            group.RuleFor(x => x.MinSelect).GreaterThanOrEqualTo(0);
+            group.RuleFor(x => x.MaxSelect).GreaterThanOrEqualTo(x => x.MinSelect);
+            group.RuleFor(x => x.SortOrder).GreaterThanOrEqualTo(0);
+            group.RuleForEach(x => x.Options).ChildRules(opt =>
+            {
+                opt.RuleFor(x => x.Name).NotEmpty().MaximumLength(64);
+                opt.RuleFor(x => x.ExtraPrice).GreaterThanOrEqualTo(0).When(x => x.ExtraPrice.HasValue);
+                opt.RuleFor(x => x.SortOrder).GreaterThanOrEqualTo(0);
+            });
+        });
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductAttributesCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductAttributesCommandValidator.cs
new file mode 100644
index 0000000..7cc5e10
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductAttributesCommandValidator.cs
@@ -0,0 +1,28 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Products.Commands;
+
+namespace TakeoutSaaS.Application.App.Products.Validators;
+
+/// <summary>
+/// 替换规格验证器。
+/// </summary>
+public sealed class ReplaceProductAttributesCommandValidator : AbstractValidator<ReplaceProductAttributesCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public ReplaceProductAttributesCommandValidator()
+    {
+        RuleFor(x => x.ProductId).GreaterThan(0);
+        RuleForEach(x => x.AttributeGroups).ChildRules(group =>
+        {
+            group.RuleFor(x => x.Name).NotEmpty().MaximumLength(64);
+            group.RuleFor(x => x.SortOrder).GreaterThanOrEqualTo(0);
+            group.RuleForEach(x => x.Options).ChildRules(opt =>
+            {
+                opt.RuleFor(x => x.Name).NotEmpty().MaximumLength(64);
+                opt.RuleFor(x => x.SortOrder).GreaterThanOrEqualTo(0);
+            });
+        });
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductMediaCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductMediaCommandValidator.cs
new file mode 100644
index 0000000..fa27cb7
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductMediaCommandValidator.cs
@@ -0,0 +1,24 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Products.Commands;
+
+namespace TakeoutSaaS.Application.App.Products.Validators;
+
+/// <summary>
+/// 替换媒资验证器。
+/// </summary>
+public sealed class ReplaceProductMediaCommandValidator : AbstractValidator<ReplaceProductMediaCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public ReplaceProductMediaCommandValidator()
+    {
+        RuleFor(x => x.ProductId).GreaterThan(0);
+        RuleForEach(x => x.MediaAssets).ChildRules(asset =>
+        {
+            asset.RuleFor(x => x.Url).NotEmpty().MaximumLength(512);
+            asset.RuleFor(x => x.Caption).MaximumLength(256);
+            asset.RuleFor(x => x.SortOrder).GreaterThanOrEqualTo(0);
+        });
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductPricingRulesCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductPricingRulesCommandValidator.cs
new file mode 100644
index 0000000..5cdac59
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductPricingRulesCommandValidator.cs
@@ -0,0 +1,23 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Products.Commands;
+
+namespace TakeoutSaaS.Application.App.Products.Validators;
+
+/// <summary>
+/// 替换价格策略验证器。
+/// </summary>
+public sealed class ReplaceProductPricingRulesCommandValidator : AbstractValidator<ReplaceProductPricingRulesCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public ReplaceProductPricingRulesCommandValidator()
+    {
+        RuleFor(x => x.ProductId).GreaterThan(0);
+        RuleForEach(x => x.PricingRules).ChildRules(rule =>
+        {
+            rule.RuleFor(x => x.Price).GreaterThan(0);
+            rule.RuleFor(x => x.ConditionsJson).NotEmpty();
+        });
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductSkusCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductSkusCommandValidator.cs
new file mode 100644
index 0000000..7e4a387
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Validators/ReplaceProductSkusCommandValidator.cs
@@ -0,0 +1,26 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Products.Commands;
+
+namespace TakeoutSaaS.Application.App.Products.Validators;
+
+/// <summary>
+/// 替换 SKU 验证器。
+/// </summary>
+public sealed class ReplaceProductSkusCommandValidator : AbstractValidator<ReplaceProductSkusCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public ReplaceProductSkusCommandValidator()
+    {
+        RuleFor(x => x.ProductId).GreaterThan(0);
+        RuleForEach(x => x.Skus).ChildRules(sku =>
+        {
+            sku.RuleFor(x => x.SkuCode).NotEmpty().MaximumLength(64);
+            sku.RuleFor(x => x.Price).GreaterThan(0);
+            sku.RuleFor(x => x.OriginalPrice).GreaterThan(0).When(x => x.OriginalPrice.HasValue);
+            sku.RuleFor(x => x.StockQuantity).GreaterThanOrEqualTo(0).When(x => x.StockQuantity.HasValue);
+            sku.RuleFor(x => x.SortOrder).GreaterThanOrEqualTo(0);
+        });
+    }
+}
diff --git a/src/Domain/TakeoutSaaS.Domain/Products/Repositories/IProductRepository.cs b/src/Domain/TakeoutSaaS.Domain/Products/Repositories/IProductRepository.cs
index 833f555..451c535 100644
--- a/src/Domain/TakeoutSaaS.Domain/Products/Repositories/IProductRepository.cs
+++ b/src/Domain/TakeoutSaaS.Domain/Products/Repositories/IProductRepository.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
@@ -19,48 +20,88 @@ public interface IProductRepository
     /// <summary>
     /// 按分类与状态筛选商品列表。
     /// </summary>
-    Task<IReadOnlyList<Product>> SearchAsync(long tenantId, long? storeId, long? categoryId, ProductStatus? status, CancellationToken cancellationToken = default);
+    Task<IReadOnlyList<Product>> SearchAsync(long tenantId, long? storeId, long? categoryId, ProductStatus? status, CancellationToken cancellationToken = default, DateTime? updatedAfter = null);
 
     /// <summary>
     /// 获取租户下的商品分类。
     /// </summary>
     Task<IReadOnlyList<ProductCategory>> GetCategoriesAsync(long tenantId, CancellationToken cancellationToken = default);
 
+    /// <summary>
+    /// 获取门店商品分类。
+    /// </summary>
+    Task<IReadOnlyList<ProductCategory>> GetCategoriesByStoreAsync(long tenantId, long storeId, bool onlyEnabled = true, CancellationToken cancellationToken = default);
+
     /// <summary>
     /// 获取商品 SKU。
     /// </summary>
     Task<IReadOnlyList<ProductSku>> GetSkusAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
 
+    /// <summary>
+    /// 批量获取商品 SKU。
+    /// </summary>
+    Task<IReadOnlyList<ProductSku>> GetSkusByProductIdsAsync(IReadOnlyCollection<long> productIds, long tenantId, CancellationToken cancellationToken = default);
+
     /// <summary>
     /// 获取商品加料组与选项。
     /// </summary>
     Task<IReadOnlyList<ProductAddonGroup>> GetAddonGroupsAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
 
+    /// <summary>
+    /// 批量获取商品加料组。
+    /// </summary>
+    Task<IReadOnlyList<ProductAddonGroup>> GetAddonGroupsByProductIdsAsync(IReadOnlyCollection<long> productIds, long tenantId, CancellationToken cancellationToken = default);
+
     /// <summary>
     /// 获取商品加料选项。
     /// </summary>
     Task<IReadOnlyList<ProductAddonOption>> GetAddonOptionsAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
 
+    /// <summary>
+    /// 批量获取商品加料选项。
+    /// </summary>
+    Task<IReadOnlyList<ProductAddonOption>> GetAddonOptionsByGroupIdsAsync(IReadOnlyCollection<long> addonGroupIds, long tenantId, CancellationToken cancellationToken = default);
+
     /// <summary>
     /// 获取商品规格组与选项。
     /// </summary>
     Task<IReadOnlyList<ProductAttributeGroup>> GetAttributeGroupsAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
 
+    /// <summary>
+    /// 批量获取商品规格组。
+    /// </summary>
+    Task<IReadOnlyList<ProductAttributeGroup>> GetAttributeGroupsByProductIdsAsync(IReadOnlyCollection<long> productIds, long tenantId, CancellationToken cancellationToken = default);
+
     /// <summary>
     /// 获取商品规格选项。
     /// </summary>
     Task<IReadOnlyList<ProductAttributeOption>> GetAttributeOptionsAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
 
+    /// <summary>
+    /// 批量获取商品规格选项。
+    /// </summary>
+    Task<IReadOnlyList<ProductAttributeOption>> GetAttributeOptionsByGroupIdsAsync(IReadOnlyCollection<long> attributeGroupIds, long tenantId, CancellationToken cancellationToken = default);
+
     /// <summary>
     /// 获取商品媒资。
     /// </summary>
     Task<IReadOnlyList<ProductMediaAsset>> GetMediaAssetsAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
 
+    /// <summary>
+    /// 批量获取商品媒资。
+    /// </summary>
+    Task<IReadOnlyList<ProductMediaAsset>> GetMediaAssetsByProductIdsAsync(IReadOnlyCollection<long> productIds, long tenantId, CancellationToken cancellationToken = default);
+
     /// <summary>
     /// 获取商品定价规则。
     /// </summary>
     Task<IReadOnlyList<ProductPricingRule>> GetPricingRulesAsync(long productId, long tenantId, CancellationToken cancellationToken = default);
 
+    /// <summary>
+    /// 批量获取商品定价规则。
+    /// </summary>
+    Task<IReadOnlyList<ProductPricingRule>> GetPricingRulesByProductIdsAsync(IReadOnlyCollection<long> productIds, long tenantId, CancellationToken cancellationToken = default);
+
     /// <summary>
     /// 新增分类。
     /// </summary>
diff --git a/src/Infrastructure/TakeoutSaaS.Infrastructure/App/Repositories/EfProductRepository.cs b/src/Infrastructure/TakeoutSaaS.Infrastructure/App/Repositories/EfProductRepository.cs
index 41d6ace..8d0ae9c 100644
--- a/src/Infrastructure/TakeoutSaaS.Infrastructure/App/Repositories/EfProductRepository.cs
+++ b/src/Infrastructure/TakeoutSaaS.Infrastructure/App/Repositories/EfProductRepository.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Linq;
 using Microsoft.EntityFrameworkCore;
 using TakeoutSaaS.Domain.Products.Entities;
@@ -27,7 +28,7 @@ public sealed class EfProductRepository(TakeoutAppDbContext context) : IProductR
     }
 
     /// <inheritdoc />
-    public async Task<IReadOnlyList<Product>> SearchAsync(long tenantId, long? storeId, long? categoryId, ProductStatus? status, CancellationToken cancellationToken = default)
+    public async Task<IReadOnlyList<Product>> SearchAsync(long tenantId, long? storeId, long? categoryId, ProductStatus? status, CancellationToken cancellationToken = default, DateTime? updatedAfter = null)
     {
         var query = context.Products
             .AsNoTracking()
@@ -48,6 +49,11 @@ public sealed class EfProductRepository(TakeoutAppDbContext context) : IProductR
             query = query.Where(x => x.Status == status.Value);
         }
 
+        if (updatedAfter.HasValue)
+        {
+            query = query.Where(x => (x.UpdatedAt ?? x.CreatedAt) >= updatedAfter.Value);
+        }
+
         var products = await query
             .OrderBy(x => x.Name)
             .ToListAsync(cancellationToken);
@@ -67,6 +73,22 @@ public sealed class EfProductRepository(TakeoutAppDbContext context) : IProductR
         return categories;
     }
 
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductCategory>> GetCategoriesByStoreAsync(long tenantId, long storeId, bool onlyEnabled = true, CancellationToken cancellationToken = default)
+    {
+        var query = context.ProductCategories
+            .AsNoTracking()
+            .Where(x => x.TenantId == tenantId && x.StoreId == storeId);
+        if (onlyEnabled)
+        {
+            query = query.Where(x => x.IsEnabled);
+        }
+        var categories = await query
+            .OrderBy(x => x.SortOrder)
+            .ToListAsync(cancellationToken);
+        return categories;
+    }
+
     /// <inheritdoc />
     public async Task<IReadOnlyList<ProductSku>> GetSkusAsync(long productId, long tenantId, CancellationToken cancellationToken = default)
     {
@@ -79,6 +101,21 @@ public sealed class EfProductRepository(TakeoutAppDbContext context) : IProductR
         return skus;
     }
 
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductSku>> GetSkusByProductIdsAsync(IReadOnlyCollection<long> productIds, long tenantId, CancellationToken cancellationToken = default)
+    {
+        if (productIds.Count == 0)
+        {
+            return Array.Empty<ProductSku>();
+        }
+        var skus = await context.ProductSkus
+            .AsNoTracking()
+            .Where(x => x.TenantId == tenantId && productIds.Contains(x.ProductId))
+            .OrderBy(x => x.SortOrder)
+            .ToListAsync(cancellationToken);
+        return skus;
+    }
+
     /// <inheritdoc />
     public async Task<IReadOnlyList<ProductAddonGroup>> GetAddonGroupsAsync(long productId, long tenantId, CancellationToken cancellationToken = default)
     {
@@ -91,6 +128,21 @@ public sealed class EfProductRepository(TakeoutAppDbContext context) : IProductR
         return groups;
     }
 
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductAddonGroup>> GetAddonGroupsByProductIdsAsync(IReadOnlyCollection<long> productIds, long tenantId, CancellationToken cancellationToken = default)
+    {
+        if (productIds.Count == 0)
+        {
+            return Array.Empty<ProductAddonGroup>();
+        }
+        var groups = await context.ProductAddonGroups
+            .AsNoTracking()
+            .Where(x => x.TenantId == tenantId && productIds.Contains(x.ProductId))
+            .OrderBy(x => x.SortOrder)
+            .ToListAsync(cancellationToken);
+        return groups;
+    }
+
     /// <inheritdoc />
     public async Task<IReadOnlyList<ProductAddonOption>> GetAddonOptionsAsync(long productId, long tenantId, CancellationToken cancellationToken = default)
     {
@@ -114,6 +166,21 @@ public sealed class EfProductRepository(TakeoutAppDbContext context) : IProductR
         return options;
     }
 
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductAddonOption>> GetAddonOptionsByGroupIdsAsync(IReadOnlyCollection<long> addonGroupIds, long tenantId, CancellationToken cancellationToken = default)
+    {
+        if (addonGroupIds.Count == 0)
+        {
+            return Array.Empty<ProductAddonOption>();
+        }
+        var options = await context.ProductAddonOptions
+            .AsNoTracking()
+            .Where(x => x.TenantId == tenantId && addonGroupIds.Contains(x.AddonGroupId))
+            .OrderBy(x => x.SortOrder)
+            .ToListAsync(cancellationToken);
+        return options;
+    }
+
     /// <inheritdoc />
     public async Task<IReadOnlyList<ProductAttributeGroup>> GetAttributeGroupsAsync(long productId, long tenantId, CancellationToken cancellationToken = default)
     {
@@ -126,6 +193,21 @@ public sealed class EfProductRepository(TakeoutAppDbContext context) : IProductR
         return groups;
     }
 
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductAttributeGroup>> GetAttributeGroupsByProductIdsAsync(IReadOnlyCollection<long> productIds, long tenantId, CancellationToken cancellationToken = default)
+    {
+        if (productIds.Count == 0)
+        {
+            return Array.Empty<ProductAttributeGroup>();
+        }
+        var groups = await context.ProductAttributeGroups
+            .AsNoTracking()
+            .Where(x => x.TenantId == tenantId && productIds.Contains(x.ProductId))
+            .OrderBy(x => x.SortOrder)
+            .ToListAsync(cancellationToken);
+        return groups;
+    }
+
     /// <inheritdoc />
     public async Task<IReadOnlyList<ProductAttributeOption>> GetAttributeOptionsAsync(long productId, long tenantId, CancellationToken cancellationToken = default)
     {
@@ -149,6 +231,21 @@ public sealed class EfProductRepository(TakeoutAppDbContext context) : IProductR
         return options;
     }
 
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductAttributeOption>> GetAttributeOptionsByGroupIdsAsync(IReadOnlyCollection<long> attributeGroupIds, long tenantId, CancellationToken cancellationToken = default)
+    {
+        if (attributeGroupIds.Count == 0)
+        {
+            return Array.Empty<ProductAttributeOption>();
+        }
+        var options = await context.ProductAttributeOptions
+            .AsNoTracking()
+            .Where(x => x.TenantId == tenantId && attributeGroupIds.Contains(x.AttributeGroupId))
+            .OrderBy(x => x.SortOrder)
+            .ToListAsync(cancellationToken);
+        return options;
+    }
+
     /// <inheritdoc />
     public async Task<IReadOnlyList<ProductMediaAsset>> GetMediaAssetsAsync(long productId, long tenantId, CancellationToken cancellationToken = default)
     {
@@ -161,6 +258,21 @@ public sealed class EfProductRepository(TakeoutAppDbContext context) : IProductR
         return assets;
     }
 
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductMediaAsset>> GetMediaAssetsByProductIdsAsync(IReadOnlyCollection<long> productIds, long tenantId, CancellationToken cancellationToken = default)
+    {
+        if (productIds.Count == 0)
+        {
+            return Array.Empty<ProductMediaAsset>();
+        }
+        var assets = await context.ProductMediaAssets
+            .AsNoTracking()
+            .Where(x => x.TenantId == tenantId && productIds.Contains(x.ProductId))
+            .OrderBy(x => x.SortOrder)
+            .ToListAsync(cancellationToken);
+        return assets;
+    }
+
     /// <inheritdoc />
     public async Task<IReadOnlyList<ProductPricingRule>> GetPricingRulesAsync(long productId, long tenantId, CancellationToken cancellationToken = default)
     {
@@ -173,6 +285,21 @@ public sealed class EfProductRepository(TakeoutAppDbContext context) : IProductR
         return rules;
     }
 
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<ProductPricingRule>> GetPricingRulesByProductIdsAsync(IReadOnlyCollection<long> productIds, long tenantId, CancellationToken cancellationToken = default)
+    {
+        if (productIds.Count == 0)
+        {
+            return Array.Empty<ProductPricingRule>();
+        }
+        var rules = await context.ProductPricingRules
+            .AsNoTracking()
+            .Where(x => x.TenantId == tenantId && productIds.Contains(x.ProductId))
+            .OrderBy(x => x.SortOrder)
+            .ToListAsync(cancellationToken);
+        return rules;
+    }
+
     /// <inheritdoc />
     public Task AddCategoryAsync(ProductCategory category, CancellationToken cancellationToken = default)
     {