Baseline is now 3.6W

With Terminal User Interface (TUI) for everything fiesible, my XPS 14 now idles at no more than 3.6W (sometimes even below 3W) with the screen at 70% brightness. The battery is 70 Wh. That gives: 70 Wh ÷ 3.6W ≈ 19.4 hours of idle battery life. A full workday and then some, on a single charge, screen on. With screen off (lid closed but laptop not suspended), the drain is around 1.5W. How I got here…