This PR enhances the model card for 'Generative Refocusing: Flexible Defocus Control from a Single Image' by adding:
- The `pipeline_tag: image-to-image` for improved discoverability.
- Links to the paper ([Generative Refocusing: Flexible Defocus Control from a Single Image](https://huggingface.co/papers/2512.16923)), project page ([https://generative-refocusing.github.io/](https://generative-refocusing.github.io/)), GitHub repository ([https://github.com/rayray9999/Genfocus](https://github.com/rayray9999/Genfocus)), Hugging Face Demo, and YouTube tutorial.
- A concise description of the model's functionality.
- A detailed 'Quick Start' section from the GitHub README, providing installation and Gradio demo instructions.
- The official citation information.
Please review and merge if everything looks good.
