pub fn narration_prompt(kind: &str, context: &str) -> Option<String>Expand description
Build the prompt for one narration kind.
kind is what makes this a general facility rather than a
background-task-specific one: adding a narrated action means adding an arm
here, not new plumbing. Returns None for an unrecognised kind so an
unknown caller is a no-op rather than an unconstrained prompt.