- Add docs/adr/README.md with ADR format, rules, and index - Add ADR-0001: IMAP thread resolution via In-Reply-To + References - Add Documentation Rules section to AGENT.md - Update validate-issue skill: flag ADR-requiring changes - Rename do-task → implement-task for clearer semantics - Update review-pr skill: accept docs/adr/, reject agent artifacts Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
