Hi @Orange-Rhino , thank you for trying out our game. We are glad you liked it.
Yes, the yellow lights are just for lighting (although you gave me an interesting idea... thank you for that. Maybe if we decide to continue working on this project in the future we could implement Portals for the Robots to go across Walls according to specific rules - conditions...).
Regarding Fast Script Reload, yes it is a free tool that allows you to write code (in your preferrer IDE - Rider, Visual Studio, VSCode, etc...) while you have 'PlayMode' already enabled in the Unity Editor... and you can see the changes in your game instantly. For me particularly worked like a charm, it improved my productivity. As I am a fan of that tool, I recommend you to test it out. The author has a nice Discord account an attends people's suggestions in there.
Have a nice day!