by the way, there's a suggestion that Siv was the inventor (judging by the last words in the paragraph)
What do you think about Magnus's killer? Could it have been a bot with a machine gun?
However, if that were the case, there probably wouldn't be any clues, but there are plenty -
blood (not necessarily a clue, it might actually be related to the fact that there was bot protection);
marks on the doorframe;
an alliance of dark forces.
What made Siv curl up? Poison?
*going to think about it until evening*