What it does
Trigger one shake right now, regardless of the interval timer.
How it works
Tapping the button in Settings (or running the ShakeNow Shortcuts intent, or visiting `shakeiton://shake`) calls the engine's shakeNow() method, which moves the cursor immediately and resets the interval clock.
Where to find it
Settings → Shake → Shake Now. Also available as a menu-bar item, an App Intents Shortcut, and a URL-scheme verb.
When to use it
When you want a deterministic, on-demand shake — testing the distance slider, kicking the idle timer right now, or wiring it into a Shortcut.