feat: 添加checkAppId函数以验证上下文中的App ID，并在auth中间件中使用

src/modules/n5/index.ts

@@ -5,7 +5,7 @@ import { IncomingMessage, ServerResponse } from 'http';
 type ProxyOptions = {
   createNotFoundPage: (msg?: string) => any;
 };
-// /n5/:slug
+// /n5/:slug/
 export const N5Proxy = async (req: IncomingMessage, res: ServerResponse, opts?: ProxyOptions) => {
   const { url } = req;
   const _url = new URL(url || '', `http://localhost`);