I have no ideas for some of the stories in my collection. Can BookyAI suggest them?

Yes, from version 1.9.20. On the Structure step of the New Book form, in "Your stories", press "Suggest story ideas". BookyAI pitches a few stories that fit what your collection is about, each with a title, a one-line hook and what happens. "Keep" puts an idea into the first empty row; "Skip" drops it. "More ideas" asks for new ones that repeat none of the stories you already have. You can edit any kept idea in its row, like a story you wrote yourself. The ideas come from the topic you wrote on the first step and from "What ties them together", so write at least one of the two first.