sshnp using ssh keys with passphrase has a security issue

[cconstab]

Is your feature request related to a problem? Please describe.

The current --identity-passphrase option leaves the key and the passphrase in the shell history which is not safe

Describe the solution you'd like

I an ideal world not having to enter the passphrase at all ?

Describe alternatives you've considered

A couple of options..
Drop to a prompt to enter the passphrase
Use the safer mechanism on particular platforms to get entry
Does sshnp need to know the passphrase any way ?

Additional context

example existing commandline
╰$ sshnp -f @ccons -t @ssh_11 -h @rv_am -d ord_001 -u opc -i ~/.ssh/GitHub_rsa --identity-passphrase MySecurePassPhrase!!

[XavierChanth]

Does sshnp need to know the passphrase any way ?

Pure dart, yes, other implementations, no.