florian-lefebvre/satori-astro ? reverse-engineered prompt

Build me an Astro helper that makes it easy to generate Open Graph images from my site content.

I want to be able to pass in some text, a title, and maybe a few simple options, then get back a generated image I can use for social cards and sharing. Please make it work with Astro in a clean way, and use satori for laying out the image and sharp for turning it into an actual file.

It would be great if you also include a small example or playground so I can see how to use it right away, plus clear setup notes in the README. Keep it simple and friendly for people who want to add dynamic preview images to an Astro site without having to figure everything out themselves. If you need to check current docs for Astro, satori, or sharp, go ahead and look them up.