Contribute new references

What belongs here

Additions should improve comparison, not just increase volume. A good contribution usually does one of three things:

• adds a missing pattern page
• introduces a system with strong public guidance
• links an example that shows a materially different implementation

If you are unsure, compare your proposal against existing pages such as Command Menu or Empty State.

Quality bar

Keep new entries opinionated and specific.

• Write summaries in plain product language.
• Prefer references that expose real usage notes, accessibility guidance, or code examples.
• Use placeholder imagery only when the real asset cannot be redistributed.
• Keep internal links route-shaped, for example /components/buttons/ or /design-systems/#primer.

Pull request checklist

1. Add or update the content file under content/.
2. Provide a matching placeholder asset in public/.
3. Run pnpm validate:content.
4. Run pnpm test:e2e if you touched filters, search, or route behavior.

Editorial note

This is a clean-room implementation. Do not paste copy, assets, or proprietary source from other galleries. Summarize what you observed in your own words and link back to public material where appropriate.