Yes, I found How to customize permalinks? and https://groups.google.com/g/tiddlywiki/c/QOzs3CVtosU/m/XpqE0X_QBQAJ?pli=1. I’m surprised neither of them were suggested alternatives for my new topic.
So, I think that you’re not alone. Stay tuned, I will be sharing my slow advances as the need arises again.
Great. I look forward to seeing them.
I just had an idea for an interesting alternative: Using one of the free shorteners as something of a database. Pass the full url to one of their APIs, get back the shortened version, then use their short tag internally. That is send https://tiddlywiki.com/#%24%3A%2FDefaultTiddlers:%24%3A%2FDefaultTiddlers%20%24%3A%2FControlPanel%20HelloThere%20GettingStarted%20Community to the API at, say, http://bit.ly to get something like http://bit.ly/3XGyl9j, then share the url https://tiddlywiki.com/#/3XGyl9j with the user. If someone visits with that url, simply reverse the process. I don’t know if any of the public shorteners have terms that would allow that usage, but it’s certainly a cheap way to handle this.