gatsbyjs/gatsby ? reverse-engineered prompt

Build me a Gatsby style website framework that lets people create very fast React websites and apps without having to tune everything by hand. I want someone to be able to start a new site quickly, run it locally, edit pages, and then build it for hosting on something like Netlify.

It should let the site pull content from different places like Markdown files, a CMS, WordPress, or an API, and give developers one consistent way to query that content with GraphQL. It should support normal static pages, dynamic React app pages, and options for server side rendering when a page needs it.

Please include the basics people expect, like a starter project, a local development command, production build output, page routing, image optimization, code splitting, lazy loading, and good defaults for performance. Add clear docs and examples so a new developer can understand how to make a blog or content site with it.