The notebook lines are off by default; the cloud stays. The tray — the air, the bar, the status line — sits on black, or on white in light mode, whatever ground the window has: the transcript above is the hood, this is the machinery, and it always looks like itself. A pro session on Claude opens on the newest model the provider's list knows unless one was named, and a remembered family moves up to its newest release. EASEL_NO_REMEMBER=1 keeps a scripted run from touching the preferences.