Workspace i is KWin's desktop i, and switching and moving by index came with the
workspaces. What a user binds keys to besides is the rest of komorebi's
workspace commands: going to the next or the previous workspace (or the next
empty one), back to the last one, adding and closing workspaces, showing one
index on every monitor, and setting the layout or the tiling of a workspace that
need not be in front. They are made of the same two operations, showing a
workspace and moving a container to one, so KWin keeps doing the showing and the
hiding.
A workspace gets a name, which focus-named-workspace, named-workspace-layout and
named-workspace-tiling find it by on any monitor; focusing a named workspace
focuses its monitor too, so focus_monitor comes with it. The name is komorebi's:
naming a workspace does not rename KWin's desktop. The query
focused-workspace-name answers with the name, or the index of a workspace that
has none.
The moves to a named workspace, and everything that addresses a monitor, are
moves between monitors in the window manager and come with more than one
monitor.
