This PR improves the model card by:
- Adding the `pipeline_tag: unconditional-image-generation` to the metadata, which helps users discover the model under the relevant task category on the Hugging Face Hub.
- Explicitly linking to the paper [AlphaFlow: Understanding and Improving MeanFlow Models](https://huggingface.co/papers/2510.20771) within the model card content.
- Including the comparison image from the original GitHub repository to provide a visual overview of the model's capabilities.