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_workstation/frontend/vite.config.js

@@ -6,7 +6,7 @@ export default defineConfig({
   plugins: [vue()],
   build: {
     outDir: '../web/static',
-    emptyOutDir: true
+    emptyOutDir: false
   },
   server: {
     port: 8893,

bj_power_workstation/web/static/index.html

@@ -4,6 +4,8 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>工位终端</title>
+    <!-- 系统图标：工位终端屏（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'/><rect x='6' y='7' width='20' height='14' rx='2' fill='none' stroke='%23fff' stroke-width='2'/><path d='M12 25h8M16 21v4' stroke='%23fff' stroke-width='2' stroke-linecap='round'/></svg>">
     <script type="module" crossorigin src="/assets/index-PF1EWCik.js"></script>
     <link rel="stylesheet" crossorigin href="/assets/index-Dz4RGjfJ.css">
   </head>