More Storybot updates (#1116)

* initial changes for gemini storybot

* storybot updates for gemini

* more storybot updates

* interim interruptible commit

* cleanup

* cleanup

* cleanup

* first draft

* wip

* more storybot fixes

* more storybot updates WIP

* committing before changing the image prompting strategy

* wip

* prompt updating

* cleanup

* cleanup

* cleanup

* readme cleanup

* fixup

examples/storytelling-chatbot/env.example

@@ -2,8 +2,6 @@ DAILY_API_KEY=
 DAILY_SAMPLE_ROOM_URL=
 ELEVENLABS_API_KEY=
 ELEVENLABS_VOICE_ID=
-FAL_KEY=
-OPENAI_API_KEY=
 GOOGLE_API_KEY=
 
 ENV= # dev | production