Improve a single carousel topic

A webhook receives a topic record's ids and sets it In Progress. The workflow sends the topic name, description, hero image headline, hero image prompt and any extra context for the post description to the AI model chosen on the topic.

The model returns an improved topic description, hero image prompt and hero headline, which are written back to the same record, and the topic is set to Topic Improved. A usage log record stores the run's tokens and cost. Run it on topics from the Bulk Topic Generator before you make the hero image and carousel script.