I also use AnyBox & thoroughly enjoy it. I like that it runs on my devices & isn't tied to a service that might change or decline (like Pinboard), plus the features are excellent.
You should read the article. The author gives a lot of examples of very cool, useful things that he can do using Sky. Personally, I can't wait until it's available.
I appreciate all that you’re doing, but you really should include a license in your books. Since they’re all public domain, something like the Creative Commons Public Domain Mark 1.0: https://creativecommons.org/publicdomain/mark/1.0/ would suit. That makes the licensing situation completely clear to anyone who comes across the books.
However, I also noticed a complication. In your FAQ, you state “However, I DO take issue with people just taking all my ebooks, and offering them on their own site, as is, and not taking out my logo and website name first. Please don't do this. If you take out my logo and website name - fair enough - but if you don't, please bear in mind this is then copyright infringement.” That should also be made clear in each book.
Further, I’m not sure if you can really say that your website name is copyrighted. You can trademark a website name, but I’m pretty sure you can’t say it is copyrighted. I could be wrong — IANAL — & will happily stand correction.
In the footer of Standard Ebooks, it says: “Content produced by or for Standard Ebooks L3C is dedicated to the public domain via the CC0 1.0 Universal Public Domain Dedication. Content not produced by or for Standard Ebooks L3C but displayed on this website may be subject to copyright.” (https://standardebooks.org/) Perhaps that sort of contrast would be a guide (not necessarily about your website’s content, but as a guide to separating things out). While there, you might want to take a look at https://standardebooks.org/about/standard-ebooks-and-the-pub... as well.
Great project! I hope some of these points are helpful to you in your endeavors.
I use a nice little app called New File Menu to do that. It supports a bunch of defaults & whatever other templates you want to create. $2 on the Mac App Store. I’m just a happy user.