Some decisions are easy to reverse — you can change a UI component, rename a variable, or swap a utility function with no lasting consequences. These are two-way doors: walk through, and if it's wrong, walk back.
Other decisions create gravity. Once traffic, users, or other code depends on them, changing course gets expensive. A database schema migration after launch. An API contract that external consumers rely on. An auth boundary that shapes your entire permission model. These are one-way doors.
The most expensive mistakes in software aren't bugs. They're irreversible architectural decisions made too quickly.
Utilizza questa competenza quando crei nuovi file che rappresentano decisioni architettoniche: modelli di dati, configurazioni dell'infrastruttura, limiti di autenticazione, contratti API, pipeline CI/CD o sistemi di eventi. Segnala le decisioni irreversibili e impone una discussione sui compromessi prima di impegnarsi. Fonte: jamditis/claude-skills-journalism.