cleanup

MEDIUM W013: Attempt to modify system services in skill instructions.

• Attempt to modify system services in skill instructions detected (high risk: 0.80). The skill explicitly instructs the agent to delete filesystem artifacts (dependency dirs, build artifacts), run 'docker system prune -f', and perform reinstall operations — actions that modify and can remove resources on the host machine (even if it avoids sudo or account creation), so it poses a non-trivial risk to machine state.