Accessible toggle switch (ARIA switch role) for mounted admin pages.

Uses role="switch" and aria-checked per the ARIA Authoring Practices Guide (APG). Keyboard users can activate via Space or Enter. An optional hidden <input type="hidden"> can emit the boolean form value when wired (see hidden_name attr).

The <button role="switch"> approach is preferred over a native checkbox because it provides cleaner visual separation between the toggle track/thumb and the label affordance.