Skill files copied into generated projects by nitrostack-py init (and refreshed by nitrostack-py upgrade).
Layout: each subdirectory of skills/ is one skill (typically a SKILL.md). The CLI clones this repository and copies those directories into .cursor/skills, .claude/skills, .copilot/skills, and the other supported agent folders.
Bump package.json version when skill content changes so upgrade can detect a newer release.