Communicate model lifecycle changes before behavior breaks
Inspect model update notice, current model, new model, replacement model, model version, lifecycle stage, effective date, retirement date, shutdown date, affected usage, affected prompts, affected workflows, affected deployments, action required, no action required, auto-upgrade scheduled, manual migration required, preview short-notice, behavior change, compatibility check, test replacement, regression results, rollout plan, rollback plan, migration owner, snooze notice, dismiss notice, completed migration, failed migration, stale notice, post-retirement blocked, mobile notice, and compare marketing-update, hidden-deadline, no-impact-scope, dismiss-required, no-test-path, stale-picker, and confidence-confusion failures.