Hello,
Not sure if I am understanding you correctly (I am a bit sleep deprived today), but the Composer feature (Ctrl + I) has multi-file create and edit functionality.
Here’s a link to a post I put up that demonstrates an example prompt and its response:
https://forum.cursor.com/t/multi-file-edits-0-37-update/6425/24
Perhaps you could make the request in Composer and it could generate the README.md file and its contents?