Custom menu links without config.json access

[thcrt]

Hey :)

I want to add a custom menu link to my Jellyfin install. I'm running Jellyfin on a seedbox (ultra.cc) which gives me access to a directory that looks like this:

Code:

.
├── branding.xml
├── cache
├── data
│   ├── data
│   │   ├── jellyfin.db
│   │   └── ...
│   ├── metadata
│   ├── plugins
│   │   └── ...
│   ├── root
│   │   └── default
│   │      ├── Movies
│   │      └── Shows
│   └── transcodes
├── dlna
├── log
├── transcode
├── system.xml
└── ...

As you can see, while I can access some configuration options, config.json isn't available to me.

Is there any way I can locally override it or otherwise add a menu link with what I have available to me?

I know it's unlikely, just wanted to make sure.

Thanks <3