In the AI Action Settings panel you can access your thread history by clicking on the date showing in the panel. It isn’t obvious you can click it.
The entries then open in a pop up. Personally I’d rather have a dedicated panel for the history that is more easily accessible and doesn’t close so easily.
The entries are titled with their creation date but it’s an (for me) incorrect date format. An option to rename an entry would be a nice touch along with perhaps some more info like what element and the page the thread was started from. That would make it more scan-able and easier to pick the right entry.
The titles are quite big too and there’s not enough white space between them, making the list look a bit off.