- Remove formatCustomSkillsBlock function (dead code)
- Remove unused truncateDescription import
- Update buildCategorySkillsDelegationGuide to compact format
- Update tests to match new compact output
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>