doc: assemble shadcn registry items from remote sources

[franky47]

This PR splits the root registry.json file into its individual items, each described by:

• a JSON file (which will become the registry item when built)
• an optional markdown file for usage

The path can now be a URL, and if so the registry assembly script will download its contents, save them to a temporary location and write that location to the path. This is so the shadcn build command has a local file to resolve and inject into the built registry item in /public/r/{name}.json

It also adds:

• individual pages for each item with installation steps & the optional usage markdown file rendered
• an RSS feed for items (to be notified of changes or additions)

Tasks

• Rework the copy on the registry root page
• Move the community adapters documentation to the registry (add redirects in the Next.js config)
• Add RSS feed icon
• Fix blog RSS feed cascade

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Preview	Comments	Updated (UTC)
nuqs	Ready	Preview	Comment	Nov 12, 2025 11:43pm

[github-actions]

🎉 This PR is included in version 2.8.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀