any system available for enabling a Skoda Smart key to touch-lock a digital home front door lock ?

With the total lack of security that KESSY brings and easiness to gain entry, I certainly wouldn’t be installing on my home, and I doubt any home insurance company would cover you either.

You don’t say were your located, but Yale have some locks that are keypad, operated by fobs similar to KESSY, and ones that operate by an app on your phone.