修复库房地址受控展示

为平台库房管理列表和详情增加专用响应处理，在保留全局敏感字段保护的前提下恢复库房自身地址。未填写地址时显示‘未填写’，创建和编辑继续复用原有白名单写入逻辑，不修改数据库及历史数据。补充回归测试、操作日志和项目文档。

backend/api/internal/routers/platform.go

@@ -119,7 +119,9 @@ func registerProductRoute(group *gin.RouterGroup) {
 	producer.DELETE("/:identity", product.DeleteProducerAccount)
 
 	registerRestrictedNoDeleteResource(group, "/product_type", &models.ProductType{}, []string{"code", "name"})
-	registerRestrictedNoDeleteResource(group, "/product_warehouse", &models.ProductWarehouse{}, []string{"code", "name", "address", "manager", "phone"})
+	warehouseFields := []string{"code", "name", "address", "manager", "phone"}
+	_, warehouseCreate, _, warehouseUpdate := common.ResourceHandlers(&models.ProductWarehouse{}, warehouseFields, warehouseFields)
+	registerNoDeleteResource(group, "/product_warehouse", product.ListProductWarehouse, warehouseCreate, product.GetProductWarehouse, warehouseUpdate, &models.ProductWarehouse{})
 
 	infoRelations := []common.ResourceRelation{
 		requiredRelation("producer_account_identity", "producer_account_id", &models.ProducerAccount{}),