I've just written my first Apps Script add-on for showing some links in a sidebar of a Docs document.
It looks like the way I created it made it bound to a specific document (the one from which I clicked Tools > Script Editor). When I open this document, the script shows up under the Add-ons menu item.
I would like the add-on to be available in my other documents as well, but I don't feel like publishing it: It requires me to add screenshots, icons, and other stuff that prevents me from being able to flesh out a script without too much fuzz.
I tried to publish it with "Private visibility" but that didn't make it available to my other documents (tried searching in Add-ons > Get add-ons).
So how do I make the script available to use in all my documents? Can I detach the script from the original document and would that help?