881 B
KeyButton
Owner-approved momentary keyboard/pointer visualization (Mission Core, 2026-09-25). Outlined square key surface; pressed is white with black text in every theme. This explicit outline identifies a key, not a decorative panel border.
label is the complete accessible action; children are the short key legend.
pressed is controlled and never toggled by the component. Native button keyboard
semantics, disabled behavior and focus indicator are retained. Consumers own
pointer capture and release, keyboard scope, blur/cancel/unmount handling and
any domain command lease. A displayed pressed key is not an acknowledgement
from equipment. Disabled always renders released. No global listeners exist.
Catalog includes idle, pressed, disabled and focusable surfaces. Use only for momentary key input, not ordinary actions (Button) or mode choice (SegmentedControl).