Mark setup done

What your assistant is told

Mark the user's Loki Nutrition setup as done, which takes the setup card off the app's Home screen. Call it once, at the end of the first-run setup chat (the one that starts "Using my Loki Nutrition…" and ends "When we're finished, mark my setup as done"), after the user has confirmed their targets and setup are right. Don't call it mid-chat or in any other conversation. No arguments. Idempotent: calling it again keeps the first time. Returns a confirmation you can pass on to the user and when setup was marked done.