This feature is implemented in 1C:Enterprise version 22.214.171.1248.
As a tool for developing and supporting applications, Designer can be used both interactively (to edit configurations or describe 1C:Enterprise script algorithms) and from the command line (to update, dump and restore configurations, etc.). For instance, the new development environment (EDT) reassigns some of its functions to Designer.
Our initial intent was to speed up EDT-Designer interactions. However, we decided to extend the task at hand. Ultimately, we developed a universal way of working with Designer through the command line. We called it the agent mode. In agent mode, Designer can run an arbitrary number of external commands without shutting down.