anti-entropy-governance

# Anti-Entropy ## Overview Use this skill when the task is not merely "change code" but "remove old paths safely without growing entropy". This skill chooses between: - `delete-first` for internal code retirement - `compat-exception` for proven external dependency boundaries - `confirmation-first` for irreversible state or an external contract whose distributed consumers cannot be observed It does not replace `brainstorming`, `writing-plans`, `systematic-debugging`, or `verification-before-completion`. It is a narrow governance owner for retirement, fallback collapse, duplicate-owner cleanup, and deletion safety. ## When to Use Use when any of these are true: - old logic, duplicate owners, or stale fallbacks should be retired - a candidate fix is "delete old path" vs "add another fallback" - internal keyword / phrase / trigger logic is being replaced by structured logic - a new canonical owner exists and the old owner may still carry real behavior - a cleanup, migration, or deprecation task touches schema, persistence, source-of-truth, or external compatibility boundaries - the task risks confusing code retirement with live data deletion Do not use for: - pure additive feature work with no retirement decision - tiny wording edits - simple status or read-only Q&A - normal bug fixes that do not involve owner collapse, fallback cleanup, or deletion choice ## Auto-Compose Boundary This skill should be composed by other owners. It should not become a new global h...