Authors, audits, and maintains project documentation across CLAUDE.md / .claude/rules/, AGENTS.md, README.md, and Diátaxis docs/ trees (root + nested for monorepos). Four modes: init scaffolds a tiered docs setup from scratch; update detects drift (dead @imports, renamed commands, stale narrative) and incrementally refreshes via a Placement Resolver that pushes rules to the innermost-ancestor destination; readme writes or audits a README against the standard-readme spec; audit produces a documentation health report across every surface. Routes by kind: hard rules to CLAUDE.md, path-scoped patterns to .claude/rules/, narrative to docs/, marketing to README.md. Triggers on "init claude", "bootstrap docs", "scaffold CLAUDE.md", "update docs", "sync CLAUDE.md", "docs drift", "write a README", "audit our docs", "review the README", "Diátaxis", "/docs".