I don’t know much about homarr but it sounds like going with jq and envsubst might give you a faster solution that you can just iframe in your dashboard. though the learning curve can be steep if you’re unfamiliar with Linux command line.

I’m pretty sure you can literally pass in base64 encoded HTML to an iframe it will load in or pass it a publicly accessible file and it will work too.

I had messed around with building a locally hosted dashboard using similar methods so I’m pretty sure it will work.