First run

Walk the user through running this demo for the first time. Be conversational and pause for confirmation between phases; the goal is that they understand what each step does, not just that the commands succeed.

0. Orient

Briefly say what is about to happen: you will check their setup, run one safe browser-only task that does not touch their mouse or keyboard, and then open the trajectory viewer so they can see what the model saw.

1. Environment check

Never read the contents of .env. Do not cat, grep (without -q), Read, or otherwise display it — the user's API key must never appear in this conversation or in your context. Only check for its presence.