Do the jinn have guardian angels and scribes? Will they be questioned, blessed, and tormented in the grave? Is the angel appointed over humans responsible for their thoughts, movements, and everything?

It is not known whether the jinn have guardian angels or not, as this is part of the unseen. Their deeds are enumerated for them, and they will be held accountable for them on the Day of Judgment. It appears that the guardian angels are specific to humans. As for their questioning in their graves, and their torment and bliss, the generality of the evidence includes them, as they are accountable. As for angels being aware of inner thoughts (khawatir), no text has been reported regarding this, and scholars have differed on the matter. Some say that Allah alone knows them, while others say that the angel perceives them through a scent.