I had no idea! Where can I find docs to set this up?
https://github.com/search?q=repo%3Afish-shell%2Ffish-shell%2...
That agency includes interpreting the search results alongside the reply to your original comment.
By asking for the docs? If you found that file already then it’s clear they misunderstood what you are looking for, and also that what you are looking for doesn’t exist.