build: add dev startup scripts and project docs

添加了Windows的start.bat和Linux/macOS的start.sh一键启动脚本，补充了完整的项目README文档，同时修复了前端类型文件的导入路径问题

frontend/next-env.d.ts

@@ -1,7 +1,7 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
-import "./.next/types/root-params.d.ts";
+import "./.next/dev/types/routes.d.ts";
+import "./.next/dev/types/root-params.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.