Prototype 29 — the idle tripper dial. Craig's actual mental image: the round segment-timer with four COLORED tripper tabs on the rim — DIM · LOCK · SCREEN OFF · SUSPEND (the night watch is the lock screen's face, not its own stage). Drag a tab around the idle scale; drop it through the bottom OFF notch to disable. Side legend maps color → stage → minutes. CAFFEINE still bypasses the lot.