chore: 设计规格文档 + 销售数据 + 脚本工具 + 根目录 monorepo 配置

- docs/: 设计规格、讨论记录、销售数据、健康管理文档
- scripts/: 辅助脚本
- package.json + pnpm-lock.yaml: monorepo 根配置

package.json

@@ -0,0 +1,10 @@
+{
+  "name": "erp",
+  "private": true,
+  "scripts": {
+    "start:dev": "powershell -ExecutionPolicy Bypass -File ./dev.ps1",
+    "start:stop": "powershell -ExecutionPolicy Bypass -File ./dev.ps1 -Stop",
+    "start:restart": "powershell -ExecutionPolicy Bypass -File ./dev.ps1 -Restart",
+    "start:status": "powershell -ExecutionPolicy Bypass -File ./dev.ps1 -Status"
+  }
+}