fill-form

# Fill a form 1. Read the form with `snapshot`. 2. Match user data to visible field labels. Do not invent sensitive data. 3. Fill one form step with `run`. 4. Read the page again after each step. 5. Check the completed values and use `screenshot` for visual proof. 6. Stop before the final submit unless the user clearly asks to submit. For the Browsie demo fixture, always stop before Submit.