Hi, sorry for the long delay
Sadly, we lost the code of the game jam project. We are curently returning to this project after trying some other ideas and remaking it from sratch.
If you want an idea of how the logic works, the tiles are all prefabs stored in two dictionary with their position on the grid as key, one for the floor, one for the walls. When a robot tries to move, we check if the position is free and has a solid ground. If their is a plug on the tile, it triggers an event witch lets the game manager check if a connection was made and what got activated.
I'm not sure if it's a clear explanation, I hope it at least help you a little. Good luck on your project :)