The contributor guide lives on the site itself, so it is versioned and link-checked with everything else it describes:
- Contributing — build the site locally, the front-matter contract field by field, and how to run every CI gate before you push.
- Style guide — the writing rules, each with a worked example.
- How these docs work — the three content tiers and what each one owns.
- Sync policy & drift budget — how pages that summarise upstream repositories are kept true.
Source: docs/meta/.