Skill Developer Guide Purpose Comprehensive guide for creating and managing skills in Claude Code with auto-activation system, using an illustrative custom hook architecture and concise progressive disclosure and progressive disclosure pattern. When to Use This Skill Automatically activates when you mention: - Creating or adding skills - Modifying skill triggers or rules - Understanding how skill activation works - Debugging skill activation issues - Working with skill-rules.json - Hook system mechanics - Claude Code best practices - Progressive disclosure - YAML frontmatter - 500-line rule -…