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immutable-design-guard

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Mis à jour27 juillet 2026 à 12:25

Audits code, schema, and migrations for violations of immutable data-model invariants: append-first event log, reproject-safe projectors, disposable read models, versioned artifacts, merge-safe upserts, and no business-fact `time.Now()`. Use when changing migrations, projectors, event handlers, append-only stores, or any read model derived from events; or when the user mentions "イミュータブル", "event sourcing", "projector", "reproject", "append-only", "projection", "read model", or kawasima's resource/event modeling. Applies to any append-only subsystem, not one named service. Not for stateless pure functions, TTL caches, or plain CRUD tables with no event log behind them.

Installation

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