jpxgmn无法使用

### 路由地址

```routes
/jpxgmn/weekly
/jpxgmn/search/:kw
/jpxgmn/tab/:tab?
```

### 完整路由地址

```fullroutes
/jpxgmn/weekly
/jpxgmn/search/aaa
/jpxgmn/tab/new
```

### 相关文档

https://docs.rsshub.app/zh/routes/jpxgmn

### 预期是什么？

正常抓取

### 实际发生了什么？

由于mei8.vip从发布页改成了直接301重定向，

所有已经不能正常使用

### 部署

自建

### 部署相关信息

Vercel

### 额外信息

```shell
Looks like something went wrong
Helpful Information

Error Message:
FetchError: [GET] "http://": Failed to parse URL from http:// (Invalid URL)

Route: /jpxgmn/weekly

Full Route: /jpxgmn/weekly

Node Version: v24.18.0

Git Hash: d629c66a

Git Date:
```

### 这不是重复的 issue

- [x] 我已经搜索了 [现有 issue](https://github.com/DIYgod/RSSHub/issues)，以确保该错误尚未被报告。

Start with the /jpxgmn/weekly, /jpxgmn/search/:kw, and /jpxgmn/tab/:tab? route entry points and compare them with the related documentation at docs.rsshub.app/zh/routes/jpxgmn. Reproduce the failure on the listed Vercel deployment and trace the mei8.vip redirect behavior; done means all three documented routes fetch successfully.

Written by the indexing model from the issue text.