Thank you!

This is what I came up with.

• a script that does what you need, and reads a kinda 'config file' which Konsole instance/window/session to use
• another script that saves the current session into that config file

So you'd save the scripts somewhere you like, and run the useThisSession one in the session you'd like to be the target.

Then, you can run / bind to a shortcut / ... the runCommand script, and it will show, raise, set Session, and run the command on the target saved earlier.

useThisSession.sh:

#!/bin/bash
# useThisSession

echo MYCMD_SERVICE=$KONSOLE_DBUS_SERVICE > ~/.config/mycmdrc
echo MYCMD_SESSION=${KONSOLE_DBUS_SESSION#/Sessions/} >> ~/.config/mycmdrc
echo MYCMD_WINDOW=${KONSOLE_DBUS_WINDOW#/Windows/} >> ~/.config/mycmdrc

runCommand.sh:

#!/bin/bash
# runCommand

. ~/.config/mycmdrc

qdbus $MYCMD_SERVICE /konsole/MainWindow_$MYCMD_WINDOW showNormal
qdbus $MYCMD_SERVICE /konsole/MainWindow_$MYCMD_WINDOW raise
qdbus $MYCMD_SERVICE /Windows/$MYCMD_WINDOW setCurrentSession $MYCMD_SESSION
qdbus $KONSOLE_DBUS_SERVICE /Sessions/$MYCMD_SESSION runCommand "echo cmd"

For testing purposes, I'm using "echo cmd" instead of '!!' (note the different type of quotes) to not cause any... unintended... executions.

Running qdbus $MYCMD_SERVICE /konsole/MainWindow_$MYCMD_WINDOW will show you all methods available on the Window, eg, so you can pick&choose from those if you want different behaviour from show (& un-minimize) and raise.

EDIT: syntax adjusted to work in 'regular' bash