What it looks like.
One button.
Safe items are already ticked. Anything marked review first waits until you look at it. The number at the top is what you get back.
"System Data", opened.
Library, local snapshots, swap, purgeable space, caches. Each one named and measured, cleared where it's safe.
Look inside anything.
A map of any folder, big blocks are big things. Or the same as a sorted list. Search inside, click to go deeper, trash it from right there. It's the Trash, so you can change your mind.
