OptionalargsThe pane defines the shape; the area only carries it. It is scoped to one activation rather than to the pane's lifetime: activating again without it clears it, and re-delivering the same payload means passing it again. So a pane treats an arriving value as an EVENT — react to it changing, not to its presence, or a re-render replays it.
undefined is the ordinary case: opened from the ribbon, a pane is asked for nothing in
particular.
OptionaldefaultThe filter the pane opens with when none has been chosen before.
The key used to register the taskPane.
OptionalframeOptionalmodelOptionalrefRef to the task pane's root element (React 19 ref-as-prop).
What the activating call asked this pane to show —
ActivateFrameOptions.args, delivered verbatim.