deprecation-consolidation

Consolidates all deprecation, sunset, revocation, and migration-notice content into a single bundled update under Enterprise and Security Updates, and removes any standalone Migration Notices section. Use when assembling or polishing a newsletter, or when you see duplicated deprecation notes across multiple sections (models, metrics, runner enforcement, token revocations, syntax changes). Keywords: deprecation, deprecated, sunset, migration notice, breaking change, enforcement, revoked, revocation, end-of-life, EOL, retiring.