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This works as expected, but it does add the controls to the block. I'm not sure what the core team feels about this...

This is what I see:

I don't mind that personally, as the controls are added to the inspector. And presumably they would benefit from any typography panel related improvements we make as part of #27331, so no objections here.

Edit: Also: thank you for your first PR to the repository! Woop!

👋 Code-wise, this is how we add support for style properties automatically, etc. It'd be good from this point of view.

However, when testing this, things don't work as expected. There are a variety of style clashes coming from Gutenberg and the theme. See:

There's also the question that this block has two text items: the content and the citation, but the block only has a single UI component for font size. It sounds to me that users should be able to tweak these things separately?

(Haven't tested line-height in depth).

Font size and line height has been added to the block. I believe it was done in #34064.