You load it and then build it.

tiddlywiki --load twgroceries.html --build static --verbose

Helpful links:

• https://talk.tiddlywiki.org/t/easy-method-of-setting-up-a-static-site/3820/6
• https://github.com/saqimtiaz/TW5-github-actions-example

You do need to have a tiddlywiki.info file next to your wiki. I grabbed it from Saq's example, which I think is just the empty edition.

I grabbed the actual one from the empty edition.

I don't know what alltiddlers.html is for. Renders everything in one big file.

The "front page" gets rendered differently (without the custom Notebook theme), but all the individual tiddlers do get rendered with it.