BETA - Submit a story to drive AI-assisted creation of longform audio content

BETA: THIS ENDPOINT IS EXPERIMENTAL AND SUBJECT TO CHANGE.

Submits a story creation job. Accepts a story object that defines a complex audio narrative (podcasts, audiobooks, news bulletins, and other longform content). The response returns a storyId; use the GET /creator/story/{storyId} endpoint with this id to poll until the job completes.