Fern docs authoring

Write and edit documentation on a Fern site. SKILL.md is the index: follow the principles below, then read the references/ file that matches the task before writing. Don't work from this page alone when a reference exists.

Scope: this skill governs Fern docs content only — MDX pages, navigation, docs.yml and related config, snippets, changelog entries, custom components, and landing pages. It does not govern repo governance or tooling files that happen to live in the same repo, such as CLAUDE.md, AGENTS.md, STYLE-GUIDE.md, and contributor guides. Never apply the principles below — "one canonical home," "prefer editing over creating," consolidation — to those files. Leave them alone unless the user explicitly asks you to edit them.

Fern resources

Fern's configuration evolves. Look things up rather than guessing.