1771-Technologies/lytenyte — reverse-engineered prompt

Build me a React and TypeScript data grid library called LyteNyte that feels very fast and easy to drop into an app. I want it to handle really big datasets smoothly with virtualization, and support the table features people actually expect, like sorting, filtering, pagination, infinite scrolling, grouping, pivot style views, tree data, and editable cells. Make it work in two modes, one headless for full custom UI control, and one with ready made styling and themes so people can ship quickly.

Please keep the API declarative and prop driven, with strong type safety, and avoid extra dependencies if possible. It should feel stateless and easy to control from external app state or URL state. Since this is a library repo, also include a few clean demos and documentation pages that show common use cases and performance on large data.

If there are both free and pro style package boundaries in the repo, preserve that structure. Feel free to look up the current docs online if you need to match the intended behavior.