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

https://github.com/skyjake/lagrange

I also somehow thought a Google Gemini MCP server.

So did I. I know Gemini the protocol exists, but the reality is, in almost every context "Gemini" is so much, much more likely to refer to Google's LLM that I'm taken aback when it doesn't.

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" :)

They were thinking of Google Gemini, not Gemini (protocol), the latter which, although being the older, might have to consider a name change to escape a slow death after Google's hostile name-takeover.