No slight on the work you've done, but isn't there a way to rename pdf's without AI?

Almost always, I can just rename one with its Title, and that's usually the first line.

A summary (usually the abstract) could accompany the file, too long for a tag.

Think email. I'll often send a pdf with its title as the subject and the abstract as the message body above the attachment. Richer than the finder (and let's not gripe on that monster)

I'm also interested in a non-AI, application/image descriptor for my countless anonymous image files, though even a tag would be better than staring at endless screens of titles, or even thumbnail icons.

Again, no slight. I am just interested in something not reliant on AI.