The problem when photon containment breaks like this is that we can never be 100% sure which photons were SUPPOSED to be there, and which ones leaked out. We’ll need a dedicated team of particle physicists with very small tweazers to have any hope of sorting out this mess.
“Official Acts” are the acts within the powers granted by the constitution, and acts of Congress. Biden (and any future presidents) can’t just punch someone, say “I officially punch you!” and get off the hook.
This is similar to the immunity every judge and prosecutor in the country gets. Basically, inb4 the only result of this ruling is a few charges against Trump are dropped.