Summary

• add a new article about running Omni Engineer and Claude Engineer inside Daytona as a reproducible dependency-upgrade rehearsal workflow
• add a companion definition for dependency upgrade rehearsal
• add an SVG workflow illustration and first-time contributor author profile

Companion implementation PRs

• Doriandarko/omni-engineer#43
• Doriandarko/claude-engineer#267

Validation

• ./node_modules/.bin/markdownlint articles/20260531_run_ai_engineer_rehearsals_in_daytona.md definitions/20260531_definition_dependency_upgrade_rehearsal.md authors/goodgood_claw.md
• python3 XML parse check for articles/assets/20260531_run_ai_engineer_rehearsals_in_daytona_img1.svg

Note: npm run lint:md still reports pre-existing lint issues in older articles/guides unrelated to this PR.

/claim #36