Observed SC0011: the model emitted objects as [{"id":0,"concept":"book"}]
instead of plain concept strings, failing Scene validation. The system prompt
never showed a populated objects array (the example has objects: []), so the
model reused the character/interaction {id, ...} shape.
Add an Objects section with concrete examples (book, umbrella) and state
explicitly that the scene-level arrays (objects/environment/camera/lighting) hold
plain concept strings, never {id, concept} objects. Prevention layer on top of
the retry temperature escalation (recovery).
Co-authored-by: kunail0804 <kunail0804@gmail.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
