They said they hacked a Gemini server, Lagrange is a Geminispace browser.

https://github.com/skyjake/lagrange

There is a minimalist browser named Lagrange built for the Gemini protocol (a lightweight alternative to HTTP).

I’m guessing that’s what they refer to.

it's funny because no one brought up LLM including the link posted but you go "...it must be LLM related" :)