double ratchet first implementation

client/helpers/messageHelper.go

@@ -81,6 +81,13 @@ func CreateAndStoreUserMessage(message string, peer_uid string, replyToUid strin
 		return nil, "", 0, "messageBuildPostprocess : ProcessOutboundUserMessage", err
 	}
 
+	// Persist peer to save updated DR state (DrStateJson)
+	if peer.DrRootKey != "" {
+		if storeErr := client.GetConfig().GetIdentity().Peers.StorePeer(peer); storeErr != nil {
+			logger.Warn().Err(storeErr).Str("peer", peer.Uid).Msg("messageBuildPostprocess: StorePeer (DR state)")
+		}
+	}
+
 	return packedMsg, dbFile, dbId, "", nil
 }