idempotentGlobalActions
The subset of global_action action strings that are safe to retry — state-toggles or navigations whose final state is the same regardless of how many times the call runs. Dispatchers consume this to attach idempotentHint = true at call-site rather than splitting global_action into one tool per action.
power_dialog is excluded (genuine user-facing modal, not idempotent). screenshot is also excluded — it's a capture action, not nav/state.