refactor: 清理MES端本地product_type冗余代码，对齐WMS主数据架构

1.  移除MES端本地product_type实体、schema及相关CRUD代码，改为通过WMS内部API代理获取物料主数据
2.  更新物料管理粒度逻辑，新增"其他"类型(3)支持，同步更新入库校验规则
3.  修复前端物料选择、库存筛选等页面的类型判断逻辑，统一使用manage_mode区分管理类型
4.  清理静态资源文件冗余的样式代码，调整前端页面展示逻辑
5.  更新帮助文档，修正物料类型的说明描述

bj_power_mes/ent/tx.go

@@ -46,8 +46,6 @@ type Tx struct {
 	ProcessFlow *ProcessFlowClient
 	// ProcessStep is the client for interacting with the ProcessStep builders.
 	ProcessStep *ProcessStepClient
-	// ProductType is the client for interacting with the ProductType builders.
-	ProductType *ProductTypeClient
 	// Role is the client for interacting with the Role builders.
 	Role *RoleClient
 	// SemiFlow is the client for interacting with the SemiFlow builders.
@@ -224,7 +222,6 @@ func (tx *Tx) init() {
 	tx.PlcSendLog = NewPlcSendLogClient(tx.config)
 	tx.ProcessFlow = NewProcessFlowClient(tx.config)
 	tx.ProcessStep = NewProcessStepClient(tx.config)
-	tx.ProductType = NewProductTypeClient(tx.config)
 	tx.Role = NewRoleClient(tx.config)
 	tx.SemiFlow = NewSemiFlowClient(tx.config)
 	tx.Station = NewStationClient(tx.config)