Enha: roomid confusion

repos/players.go

@@ -33,6 +33,9 @@ func (p *RepoProvider) PlayerGetByName(ctx context.Context, username string) (*m
 	if err != nil {
 		return nil, err
 	}
+	if player.RoomID != nil && *player.RoomID == "" {
+		player.RoomID = nil
+	}
 	return &player, nil
 }