feat: log raw MQ body after dedup

Keep the original payload on post-dedup handling logs so accepted, filtered, and error paths can be traced.

internal/subscriber/subscriber.go

@@ -121,6 +121,8 @@ func (s *Subscriber) handleDelivery(ch *amqp.Channel, d amqp.Delivery) {
 	disp := HandleMessage(context.Background(), HandleInput{
 		Body:       d.Body,
 		Headers:    map[string]any(d.Headers),
+		Name:       s.cfg.Name,
+		Queue:      s.cfg.Queue,
 		SourceName: s.cfg.Source,
 		MaxRetry:   s.cfg.MaxRetry,
 		Deduper:    s.deduper,