This does what every codebase eventually needs: turns three redundant docs into one without losing anything important. It works through a structured four-phase process, mapping overlaps, analyzing each section for unique value (keep/condense/delete), then consolidating into a single source of truth. The standout feature is the value analysis table that forces you to justify why each section stays or goes, which prevents the usual problem of either deleting too much or chickening out and keeping everything. Best used when you've got 500+ lines spread across multiple files all explaining the same thing. The workflow is methodical enough that you won't regret deletions later.
npx skills add https://github.com/daymade/claude-code-skills --skill docs-cleaner