You should be able to to a git pull the original launcher, if you deleted a folder.
You should still be able to SSH into the Gameshell, even though it’s not booting up.
In fact, try even:
cd /home/cpi/
git pull
That should reset the entire CPI directory.
@domichal - Could you possibly include a “rescue” script that can be run to restore ~/.bashrc, in case there are future problems like this? I am a huge fan of this, and would hate for people to not use this, fearing it will mess things up. Heck, even having a disclaimer saying “PLEASE BACK UP YOUR INSTALLATION” in the installation script will make sure people don’t break things like above.