Make "fully known" a separate category

Now that we have the possibility to mark a cloze as “fully known”, the number of known clozes should be shown on the dashboard, in session summaries and similar places, as this statistic is much more informative than “100% mastered” (which is only the beginning of the journey towards mastery).

Likewise, it should be possible to search for fully known clozes in isolation:


Seconding this. I was hoping to find this data on the “more stats” page but it wasn’t there.