Do not close connection between commands

There are some way to not close ssh connection between sequential commands?

Closing connection between this commands make the execution be slow. I think is because this way is executed the connection negotiation for every single command.

Look at the SSH command execution logic in the codebase, likely in a file handling remote commands. Identify where connections are opened and closed per command. Research persistent SSH connections or connection pooling. Check if there are existing tests for command execution to understand the current flow and ensure changes don't break functionality.

索引モデルが issue の本文から書いたものです。