A fixed-anchorActivationTracker: always reports the same scope and never notifies. The
degenerate "region with no layers" — useful to hand a plain static scope to an API that wants a tracker,
so it reads the same as a LayerActivation stack. (A bare CommandScope region does not need one:
attachElement stores it directly and resolveAnchorSource returns it as-is.)
A fixed-anchor ActivationTracker: always reports the same scope and never notifies. The degenerate "region with no layers" — useful to hand a plain static scope to an API that wants a tracker, so it reads the same as a LayerActivation stack. (A bare
CommandScoperegion does not need one:attachElementstores it directly andresolveAnchorSourcereturns it as-is.)