Toolbox now lives in the menu bar. The hammer icon opens a panel with the full
toolbox — pick a tool, drop files in, run it — so you never need a window. Switch on
Hide Dock icon in Settings → General and Toolbox leaves the Dock entirely: no
Dock icon, no app switcher entry, no window at login. It takes effect immediately, no
relaunch, and the menu bar icon stays available so there's always a way back.
Open Toolbox at login is in the same place, for either mode.
Everything else is unchanged: files are still processed entirely on your Mac.