- Update error message for missing model ratio to be more user-friendly
- Modify ModelRatioNotSetEditor to filter models without price or ratio
- Enhance model data initialization with fallback values
- Implement `/api/channel/models_enabled` endpoint to retrieve enabled models
- Add `EnabledListModels` handler in controller
- Create new `ModelRatioNotSetEditor` component for managing unset model ratios
- Update router to include new models_enabled route
- Add internationalization support for new model management UI
- Include GPT-4.5 preview model in OpenAI model list