PRECONDITION_TARGET_MISSING:"target never became attached+visible within the bound" = 'target never became attached+visible within the bound'
The precondition failure that means selector drift: the recorded target never
became attached and visible. Shared with isSelectorHealable so the
producer and the predicate cannot drift apart — the wording is load-bearing.
The precondition failure that means selector drift: the recorded target never became attached and visible. Shared with isSelectorHealable so the producer and the predicate cannot drift apart — the wording is load-bearing.