feat(v2): outbox 退款感知(refund_id 进唯一键)+ 投递门禁放行退款态 + Enqueue 贯通 refundID

internal/handler/gateway_test.go

@@ -24,7 +24,7 @@ import (
 
 type nopEnqueuer struct{}
 
-func (nopEnqueuer) Enqueue(string, string, string, map[string]any) error { return nil }
+func (nopEnqueuer) Enqueue(string, string, string, string, map[string]any) error { return nil }
 
 type oneResolver struct{}