The Destination node select offers "All N eligible nodes" when a window has
two or more nodes that can receive the prompt. It is never selected for you.
Apply previews every node first and writes nothing if one refuses; then it
sends one node after another in node id order, each later node with a fresh
ticket checked against the reviewed text, and reports "Sent to X of N"
naming each refusal. A lost reply stops the run and names the node whose
outcome is unknown. Recorded as D191.