I use https://github.com/nuxt-modules/mdc with a Nuxt Content project. Also looked at https://markdoc.dev
Looking at "Google AI Ultra" it looks like I get this Jules thing, Gemini App, Notebook, etc. But if I want Gemini CLI, then I've got to go through the GCP hellscape of trying to create subscriptions, billing accounts then buying Google Code Assist or something, but then I can't get the Gemini app.
Then of course, this Google AI gives me YouTube Premium for some reason (no idea how that's related to anything).