Document

A pull request is not merged when its code is right — it is merged when the repository's documentation already describes the system the diff creates. This skill produces that state as the last content commit before merge: the docs after it read as if the change had always been there, and a reader never learns which pull request brought it.

The documentation is a source of truth, not a changelog. The answer to "what changed" is git log and the PR itself — never a page. Rewrite the prose that the change makes wrong, add the page or section the new capability earns, delete what no longer exists. A ## Changelog, ## What's new, or "as of this PR" passage in the documentation is the failure this skill exists to prevent.

Works in any repository: everything repo-specific is discovered in recon, never assumed.

Boundaries