You COULD use a casting client and server, but it’s probably much easier to just use the tablet as a Bluetooth target. Some phones/tablets just do this, but there’s also simple free apps out there that enable this as well.
Just on this one device, or all devices connected to WiFi?
Why do you think your router is crashing? Is it overheating because you have stuff stacked on it maybe?
You’re just describing a lesser SELinux or AppArmor implementation at that point if that’s how you intend to use.
What’s the differentiation?
The only application I see for this is AI-based bullshit, which makes this needlessly complicated.
Static scripts don’t get “confused”, and they certainly don’t get manipulated on a properly secured system. Why would you need an extra layer of security past the layers that already exist, when just properly securing the existing layers should be more than enough?
The only real way to learn is by repetition, just like anything else.
Find a goal, read up on it, make a goal, and get cracking.
This is a cry for clicks.