message: Start Layer 1 for the user-visible model
diff: @@ -75,7 +75,7 @@ QVariant LayerModel::data(const QModelIndex& idx, int role) const
  if (idx.column() == ColumnType::Name) {
  switch (role) {
  case Qt::DisplayRole: {
  - return (name + " " + std::to_string(layer)).c_str();
  + return QString("%1 %2").arg(name.c_str()).arg(layer + 1); // count starts at 0 internally
  }
  case Qt::ForegroundRole:
  if (layer == static_cast<int>(getMoleculeLayer().activeLayer()))
  