Also fixes two pre-existing data bugs the validator caught: devops-infrastruktur/sqs-expert.md had a mangled duplicate frontmatter block (empty description, wrong model) and sonstiges/arm-cortex-expert.md had an empty tools: [] field. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CVgbozhYmuEhiEJHffRXCV