Ctrl+C should not shut down ps-bash in shell mode

[andylbrummer]

Problem

In shell mode, pressing Ctrl+C shuts down the entire ps-bash process. Instead, Ctrl+C should only cancel the currently running command and return to the shell prompt.

Expected Behavior

• Ctrl+C: Cancels/interrupts the currently running command, then returns to the shell prompt. The shell should keep running.
• exit: This should be the way to shut down the shell.

Current Behavior

Ctrl+C terminates the entire ps-bash shell session.