- Updated LLMConfig interface to include IMAGE_PROVIDER and PIXABAY_API_KEY.
- Enhanced handleSaveLLMConfig to log the saving process and validate IMAGE_PROVIDER.
- Implemented image provider validation logic in hasValidLLMConfig to check for required API keys based on the selected provider.
- Modified start.js to read IMAGE_PROVIDER and PIXABAY_API_KEY from environment variables and include them in the user configuration setup.
