feat(product): 添加商品SKU规格ID存储功能

- 新增specId字段用于存储SKU规格信息
- 优化gong_sku_id字段的数据类型处理
- 增加sku_id和spec_id字段到数据库插入操作
- 完善商品属性值表的数据映射关系

app/services/ThirdParty/AlibabaAgent/ProductService.php

@@ -591,6 +591,7 @@ class ProductService extends AlibabaAgentBaseService
             }
 
             $skuId = $sku['skuId'] ?? '';
+            $specId = $sku['specId'] ?? '';
             $unique = $this->generateUnique($productId, $skuId ?: $skuKey);
 
             Db::name('store_product_attr_value')->insert([
@@ -605,14 +606,16 @@ class ProductService extends AlibabaAgentBaseService
                 'stock'       => $sku['stock'] ?? 9999,
                 'cost_price'  => $sku['costPrice'] ?? 0,
                 'extension_one' => 5,
-                'gong_sku_id' => (string)$skuId,
+                'gong_sku_id' => $skuId,
                 'gong_mer_profit' => 0,
                 'gong_pension'    => 0,
                 'gong_market_price' => $sku['consignPrice'] ?? 0,
                 'plate_mer_profit' => 0,
                 'volume' => 0,
                 'weight' => 0,
-                'dacang_price' => 0
+                'dacang_price' => 0,
+                'sku_id' => $skuId,
+                'spec_id' => $specId
             ]);
         }
     }