- Test LLM response parsing (list and dict formats)
- Test null params conversion to empty dict
- Test invalid format handling and skipping
- Test emotion update logic with all emotion types
- Test fallback to CALM on invalid/missing emotion
- Test batch avatar processing
- Test AI.decide wrapper returns NULL_EVENT
- Test thinking field variants (avatar_thinking vs thinking)
- Add testing strategy documentation to test file
Closes#63
