OnRelease typedef
OnRelease =
void Function(BuildContext context, ReleaseContext data)
Signature for a gesture-end handler. Consumer receives raw inputs via
ReleaseContext; calls Release.toDisplay(data) (or builds a custom plan)
and runs it via Stage.of(context).release(...) / .run(...).
Implementation
typedef OnRelease = void Function(BuildContext context, ReleaseContext data);