docs(mesh): sweep the remaining doubled-quorum comment sites — the coordinator absorbs duplicates idempotently

src/Server/ZB.MOM.WW.OtOpcUa.Runtime/Communication/NodeCommunicationActor.cs

@@ -128,8 +128,9 @@ public sealed class NodeCommunicationActor : ReceiveActor
         }
 
         // Send, not SendToAll: the deploy coordinator is a single singleton, and the central comm
-        // actor forwards to its proxy. SendToAll would deliver one ack per central node, and the
-        // coordinator would count the same node twice.
+        // actor forwards to its proxy. Its NodeId-keyed upsert absorbs a duplicate idempotently,
+        // so single-target is defence in depth and a bound on wasted sends — mirroring the
+        // corrected Grpc-branch rationale above.
         _centralClient.Tell(new ClusterClient.Send(MeshPaths.CentralCommunication, ack));
     }
 }