# Change: Update Agent Skills Lesson with Latest Documentation

## Why

The current Agent Skills lesson (03-skills) is missing several key features and best practices from the latest official Claude Code documentation at https://code.claude.com/docs/en/skills#agent-skills. Users need up-to-date information to effectively create, manage, debug, and share skills.

## What Changes

### Documentation Updates (README.md and blog-posts/03-skills.md)

1. **Enhanced Managing Skills Section** - Add comprehensive guidance for:
   - Viewing available skills (via Claude and filesystem)
   - Testing skills effectively
   - Updating skills (with restart requirements)
   - Removing skills properly

2. **Improved Debugging Section** - Add detailed troubleshooting for:
   - Skills being skipped or non-functional
   - Invalid YAML frontmatter detection
   - Script permission issues
   - Path format requirements (forward slashes)
   - Multiple skills conflicting

3. **Version History Best Practice** - Add guidance on documenting skill versions in SKILL.md

4. **Enhanced allowed-tools Documentation** - Expand explanation of tool access control with:
   - Use cases for read-only skills
   - Security-sensitive workflow examples
   - Note about permission prompts when not specified

5. **Multi-File Skill Example** - Add comprehensive example showing:
   - Directory structure for complex skills
   - Multiple reference files
   - Scripts subdirectory
   - Templates organization

6. **Plugin Skills Clarification** - Better explain how plugin-bundled skills work

### Example Updates (03-skills/ directory)

7. **Add Version History Example** - Update code-review SKILL.md to include version history section

## Impact

- Affected docs: `03-skills/README.md`, `blog-posts/03-skills.md`
- Affected examples: `03-skills/code-review/SKILL.md`
- No breaking changes - purely additive documentation improvements
- Improves user experience for skill creation and debugging