Document the current code or feature. Follow the consuming repo's docs and README rules. Do not commit unless asked. Durable information architecture belongs in existing MDX; do not invent a second sitemap.

Write to the layer that owns the change:

Layer	Role	Update when
Technical docs (path in `AGENTS.md`)	Architecture, ADRs, how-to	Behavior, architecture, commands, conventions, or workflow changed
Agent rules	Short constraints	A convention the agent must not violate changed
Nearest README	How to run this app/package; links only	Scripts, setup, or package purpose changed

Inline comments only when the code is otherwise misleading. Do not copy MDX into rules or READMEs. Do not @-attach MDX.

Identify the matching docs section, then an existing topic page (create a page only if none fits).
Write or patch MDX if the canonical explanation changed.
Patch README only for run/setup/scripts; link the MDX.
Patch the glob-matched rule only if a constraint changed.
For mechanical file or doc moves: propose the smallest from/to list grouped by related files; drop folder-name prefixes inside groups. Save only if the user gave a path. Do not move files unless they also asked to implement.

w-docs