Tree views you can pan and zoom

When you ask the reason-commons skill to show a tree, it now draws the real diagram in the chat, with drag to pan and buttons, pinch or ⌘/Ctrl+scroll to zoom, instead of retelling the tree as a list of chains. The diagram, its node counts and the "Not shown" line are generated straight from the saved reasoning, so smaller models such as Haiku get them right too.