A twisted Welsh teen obsessed with serial killers bludgeoned his mom to death with a sledgehammer after asking an AI bot, “What is a better weapon for murder?” Tristan Roberts, 18, deliberately waited until he was an adult before buying tools used to kill his mom, teaching assistant Angela Shellis, 45, blaming it on his “hatred for women” and a need for “revenge, justice and vengeance,” it emerged Wednesday as he was sentenced to at least 22 years in prison. He planned her killing for three weeks — spewing vile hatred online before turning to the Chinese AI bot Deepseek...