claude plugin validate scans all .md files in agents/ as agent definitions and warns on missing YAML frontmatter. The file was a contributor guide, not an agent. Kyberforge ships no agents, so the agents/ directory is now correctly empty. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Gv5iNACZxumtF2k6TsK18q