Character.ai is expanding beyond chatbot interactions and into narrative entertainment with the launch of “Books,” a new AI-powered experience that allows users to step inside and interact with classic works of literature. Rolling out Thursday as part of the platform’s c.ai Labs initiative, the feature introduces a library of more than 20 public-domain titles — including “ Pride and Prejudice ,” “ The Great Gatsby ,” “Alice’s Adventures in Wonderland” and “Frankenstein” — that users can play by