refactor(wms): 合并库存表为统一inventory，重构业务逻辑

1. 合并inventory_batch与serial_number为统一inventory表，用manage_mode区分结构件批次/精密件SN
2. 移除冗余的material_type字段与相关逻辑
3. 重构库存查询、检验、入库出库等业务逻辑适配新表结构
4. 调整前端路由与菜单，拆分基础数据为区域维护和物料档案
5. 优化入库校验逻辑，避免空单问题
6. 调整Vite构建配置，关闭自动清空输出目录
7. 为各模块添加详细中文注释，统一业务术语
8. 生成并更新Ent自动代码文件

bj_power_mes/frontend/vite.config.js

@@ -7,7 +7,7 @@ export default defineConfig({
   base: './',
   build: {
     outDir: '../public',
-    emptyOutDir: true
+    emptyOutDir: false
   },
   server: {
     port: 7070,

bj_power_mes/public/index.html

@@ -4,6 +4,8 @@
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
   <title>MES 产线控制</title>
+  <!-- 系统图标：产线齿轮（内联 SVG，避免依赖外部文件） -->
+  <link rel="icon" type="image/svg+xml" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'><rect width='32' height='32' rx='6' fill='%231668dc'/><circle cx='16' cy='16' r='4.2' fill='none' stroke='%23fff' stroke-width='2'/><path d='M16 5v3M16 24v3M5 16h3M24 16h3M8.2 8.2l2.1 2.1M21.7 21.7l2.1 2.1M23.8 8.2l-2.1 2.1M10.3 21.7l-2.1 2.1' stroke='%23fff' stroke-width='2' stroke-linecap='round'/></svg>">
   <script type="module" crossorigin src="./assets/index-t_TbkSJL.js"></script>
   <link rel="stylesheet" crossorigin href="./assets/index-vrQAtaxd.css">
 </head>