Improve world prompt

- it takes GPT a long time to generate formatted responses
- the world prompt involves lots of text and a formatted output
- so right now it's constrained to GPT3 because GPT4 times out
- instead of doing it all in one prompt, use two prompts w GPT4 like this
  - full description prompt, no format
  - summary prompt, no format 
  - combine into json on the api-side