Week 365 was posted by Charanjit Chana on 2024-10-21.
I've created a Gist on Github for posting to Bluesky with PHP after a little bit of investigating.
It logs you in (using an app password) and saves the token so you can reuse it later if required. The script also posts 'Hello, world!' to the validated account so that you can see that it worked.
In fact, this post was posted by the script.
Now thinking about how to roll this into Good Gear Club as the site I'm most excited about working on right now.