wix/react-native-calendars ? reverse-engineered prompt

Build me a React Native calendar components library for both iPhone and Android that people can drop into an app and use right away.

I want the main calendar to let users pick a day, highlight selected dates, and support different kinds of markings like dots, multiple dots, periods, and custom date styles. It should also be easy to change the look and feel with a theme, custom colors, labels, and day or month formatting. Please include a scrollable calendar view, a horizontal calendar option, and an agenda style view that can show events under dates.

Make it work with plain JavaScript or TypeScript, with no native module linking needed, and keep it accessible and locale friendly so month and day names can be translated. Add a simple example app or demo screens so I can see the components in action. If you need anything unclear, look up the current docs online and match the behavior people expect from a polished calendar library.