The plan-harder skill creates detailed, phased implementation plans broken into sprints and atomic tasks when users explicitly request deeper planning. It's designed for developers who need structured breakdowns of bugs, features, or tasks, solving the problem of vague or incomplete implementation roadmaps by systematically investigating requirements, clarifying ambiguities, and generating actionable, demoable increments with built-in validation checklists.
npx skills add https://github.com/am-will/codex-skills --skill plan-harder