2 files for Claude Code: sensei CLAUDE.md, challenge-description — 45 tokens loaded in every session.
CLAUDE.md A 45 tok .claude/skills/challenge-description/SKILL.md A 56 tok These files are dojo-coder/sensei's own configuration — they tell Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.