document-structure

Use to generate or update a repo's agent-facing docs — a layered progressive-disclosure tree under docs/agents/ (a tiny always-load index, core maps for architecture and dev-ops, plus dynamic concern maps discovered from the project — testing, API, deployment, database/SQL, auth, etc. — and optional deep/ detail files). Triggers on "document this repo", "generate agent docs", "update agent docs", "document this repo for agents", or any request for architecture/testing/API/database docs aimed at AI coding agents. Runs standalone in any repo; not part of the dev-flow step sequence.