The current stage's ActivityEntry named activityName, or
undefined when the open stage holds no such activity (including when
activityName is itself undefined). Composes findOpenStageEntry
with the by-name lookup that activity ops, editability, params, and the
operation pre-flights all need — callers keep their own .status / .fields
chain off the result.
The current stage's ActivityEntry named
activityName, orundefinedwhen the open stage holds no such activity (including whenactivityNameis itselfundefined). Composes findOpenStageEntry with the by-name lookup that activity ops, editability, params, and the operation pre-flights all need — callers keep their own.status/.fieldschain off the result.