Type Alias GestureName

GestureName:
    | "click"
    | "pointerDown"
    | "dblTap"
    | "drag"
    | "wheel"
    | "keyDown"
    | "keyUp"
    | "keyHeld"
    | "contextMenu"
    | "longPress"
    | "multiTouchTap"

Declarative gesture taxonomy. Single source of truth for:

which gestures hit-test (have a .target slot in the route string)
which gestures carry an argument and what values are legal
the default arg value (used when none is specified in a route)

Reflection, matcher, and inspector UI all read this table. Adding a new gesture name in one place updates every consumer.