feat: 商品模块重构 - 区分实物/虚拟商品，新增属性管理

- ProductGoodsEntity: 删除price/unit/categoryId，新增type(商品类型)和extra(扩展属性JSON)
- ProductAttributeEntity: 新增属性管理实体(name/type/options/status)
- ProductAttributeMapper/Service/ServiceImpl: 属性CRUD
- AdminProductAttributeController: Admin端属性管理接口
- AppProductAttributeController: App端属性列表接口

src/main/java/com/cool/modules/product/controller/admin/AdminProductAttributeController.java

@@ -0,0 +1,21 @@
+package com.cool.modules.product.controller.admin;
+
+import cn.hutool.json.JSONObject;
+import com.cool.core.annotation.CoolRestController;
+import com.cool.core.base.BaseController;
+import com.cool.modules.product.entity.ProductAttributeEntity;
+import com.cool.modules.product.service.ProductAttributeService;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.servlet.http.HttpServletRequest;
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+@Tag(name = "商品属性管理", description = "商品属性管理")
+@CoolRestController(api = {"add", "delete", "update", "page", "info"})
+public class AdminProductAttributeController extends BaseController<ProductAttributeService, ProductAttributeEntity> {
+
+    @Override
+    protected void init(HttpServletRequest request, JSONObject requestParams) {
+        setPageOption(createOp());
+    }
+}

src/main/java/com/cool/modules/product/controller/app/AppProductAttributeController.java

@@ -0,0 +1,26 @@
+package com.cool.modules.product.controller.app;
+
+import cn.hutool.json.JSONObject;
+import com.cool.core.annotation.CoolRestController;
+import com.cool.core.request.R;
+import com.cool.modules.product.entity.ProductAttributeEntity;
+import com.cool.modules.product.service.ProductAttributeService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestAttribute;
+
+@RequiredArgsConstructor
+@Tag(name = "商品属性", description = "App端商品属性")
+@CoolRestController
+public class AppProductAttributeController {
+
+    private final ProductAttributeService productAttributeService;
+
+    @Operation(summary = "属性列表")
+    @GetMapping("/list")
+    public R list(@RequestAttribute JSONObject requestParams) {
+        return R.ok(productAttributeService.list(requestParams, null));
+    }
+}

src/main/java/com/cool/modules/product/entity/ProductAttributeEntity.java

@@ -0,0 +1,25 @@
+package com.cool.modules.product.entity;
+
+import com.cool.core.base.TenantEntity;
+import com.mybatisflex.annotation.Table;
+import com.cool.core.annotation.ColumnDefine;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+@Table(value = "product_attribute", comment = "商品属性表")
+public class ProductAttributeEntity extends TenantEntity<ProductAttributeEntity> {
+
+    @ColumnDefine(comment = "属性名称", notNull = true)
+    private String name;
+
+    @ColumnDefine(comment = "值类型 0:文本 1:数字 2:选择 3:日期", defaultValue = "0")
+    private Integer type;
+
+    @ColumnDefine(comment = "选项值(type=2时存JSON)", type = "text")
+    private String options;
+
+    @ColumnDefine(comment = "状态 0:禁用 1:启用", defaultValue = "1")
+    private Integer status;
+}

src/main/java/com/cool/modules/product/entity/ProductGoodsEntity.java

@@ -14,20 +14,17 @@ public class ProductGoodsEntity extends TenantEntity<ProductGoodsEntity> {
     @ColumnDefine(comment = "商品名称", notNull = true)
     private String name;
 
-    @ColumnDefine(comment = "价格")
-    private Double price;
-
-    @ColumnDefine(comment = "单位")
-    private String unit;
-
     @ColumnDefine(comment = "图片")
     private String image;
 
     @ColumnDefine(comment = "描述", type = "text")
     private String description;
 
-    @ColumnDefine(comment = "分类ID", type = "bigint")
-    private Long categoryId;
+    @ColumnDefine(comment = "商品类型 0:实物商品 1:虚拟商品", defaultValue = "0")
+    private Integer type;
+
+    @ColumnDefine(comment = "扩展属性", type = "text")
+    private String extra;
 
     @ColumnDefine(comment = "状态 0:下架 1:上架", defaultValue = "1")
     private Integer status;

src/main/java/com/cool/modules/product/mapper/ProductAttributeMapper.java

@@ -0,0 +1,7 @@
+package com.cool.modules.product.mapper;
+
+import com.mybatisflex.core.BaseMapper;
+import com.cool.modules.product.entity.ProductAttributeEntity;
+
+public interface ProductAttributeMapper extends BaseMapper<ProductAttributeEntity> {
+}

src/main/java/com/cool/modules/product/service/ProductAttributeService.java

@@ -0,0 +1,7 @@
+package com.cool.modules.product.service;
+
+import com.cool.core.base.BaseService;
+import com.cool.modules.product.entity.ProductAttributeEntity;
+
+public interface ProductAttributeService extends BaseService<ProductAttributeEntity> {
+}

src/main/java/com/cool/modules/product/service/impl/ProductAttributeServiceImpl.java

@@ -0,0 +1,12 @@
+package com.cool.modules.product.service.impl;
+
+import com.cool.core.base.BaseServiceImpl;
+import com.cool.modules.product.entity.ProductAttributeEntity;
+import com.cool.modules.product.mapper.ProductAttributeMapper;
+import com.cool.modules.product.service.ProductAttributeService;
+import org.springframework.stereotype.Service;
+
+@Service
+public class ProductAttributeServiceImpl extends BaseServiceImpl<ProductAttributeMapper, ProductAttributeEntity> implements
+    ProductAttributeService {
+}