Handoff guide
Statechart vocabulary for multi-step forms.
Use this when a form or builder has back/next movement, validation, async saves, failed steps, and resume behavior.
Copy/paste handoff
Handoff
Before writing code, model this multi-step form as a statechart. Return every state, event, transition table row, guard condition, invariant, rejected transition, side effect, draft persistence rule, recovery path, and acceptance test for refresh, back/next, failed save, retry, two tabs, and resume.
Terms this handoff forces into the work
Statechart
Makes the flow explicit before UI fixes begin.
Transition table
Shows exactly what each event may do in each state.
Guard condition
Blocks invalid movement until required facts are true.
Invariant
Names facts that must stay true across every transition.
Draft persistence
Keeps unfinished work safe across refresh and return visits.
Recovery path
Defines how users continue after partial failure.
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Common questions
When should I use this template?
Use it for wizards, builders, onboarding flows, checkout flows, setup flows, and any form where state can become inconsistent.
What should happen before implementation?
The agent should return the state model, transition table, failure plan, and acceptance tests before changing component code.