- golden-diff restores committed file even on cargo test failure - Wire checklist-validate into pre-pr-content gate - Fix schema description: condition IDs are globally unique, not per-file; document room_id prefix naming convention - Add schema file missing error handling in validate-checklist - Add scope discriminator field (per_room/cross_room) to schema - Check pyyaml and jsonschema packages in setup-tooling Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>