Struct TriggerNode

go/engine/node.go:157–160

TriggerNode is the common embed for every trigger

// TriggerNode is the common embed for every trigger. A trigger has exactly one
// outgoing transition; it carries the full Transition (like LinearNode/BranchingNode)
// so the transition's side effects — e.g. an AgentTask prompt seeding the
// conversation — are applied when the trigger fires, not discarded.
type TriggerNode struct {
	id         string
	transition *Transition // nil until wired; a trigger has at most one outgoing transition
}