Where KIFF goes: from a card to the standard stack.

1. Month 0The card works.Verified on a production run.
2. Month 6Builders trust it in production.First builders running KIFF for paying clients.
3. Month 12Builders reuse it across customers.Builders running KIFF for two or more clients.
4. Month 18 to 24Part of the standard agent stack.New agents ship with a card by default.