Dumb layperson question: my understanding of confined plasma fusion from a while ago was that the energy flux across the enclosing boundary can not be handled by known materials without melting down. Is this still true? Not sure if you can share but would be curious to know what the "bottleneck" material is in your design as far as withstanding high temperatures/other extreme conditions goes.
Some "plasma touches wall" events are more severe than others. Sometimes it's even intentional. A "limited" plasma deliberately touches a part of the wall called the "limiter", and the limiter is used to bound the shape of the plasma. (Contrast with a "diverted" plasma; search both terms for more details.) On the other hand, one type of event where it's very much unintentional is called a vertical displacement event, in which the plasma, well, vertically displaces itself until it hits a wall and melts it. These suck but are planned for and handled.
If you're counting neutrons in that "energy flux", they'll just go through the wall (mostly); this is how tokamaks are supposed to make electricity, ie the neutrons go through the wall and hit a "blanket" that's much better at absorbing neutrons, and the blanket will heat up and the heat will be converted to electricity.