{"title":"Prompt Versioning Drift: Managing Deployment Lag","region":"Global","category":"Architecture","description":"Ensuring agent consistency across prompt updates and model swaps.","lastUpdated":"2026-02-23","steps":["Include a 'Prompt-Version-ID' in every system message.","Enforce 'Semantic Regression' testing for every prompt update.","Implement a 'Canary' rollout for new system instructions.","Deprecate old prompt versions with a 'Hard-Cutoff' date.","Log 'Model-Version' alongside 'Prompt-Version' for every turn."],"url":"https://checklist.day/prompt-versioning-drift-managing-deployment-lag"}