What happens when one skill changes — do the others stay in sync?

Rule libraries have no declared relationships. The dependencies are semantic — one rule assumes a definition another provides, a prompt relies on a pattern a third establishes — so a change made in isolation leaves the library partly following the new rule and partly the old. The symptom is intermittent behaviour that resists diagnosis because nothing errors.

Inbound reference discovery is part of Oxcyon's curation routine: before a skill is modified, what depends on it is enumerated; afterwards, those dependents are reconciled. That is what makes 'what breaks if this changes' and 'is this safe to delete' answerable questions, and what allows a corpus to keep growing without becoming fragile.