Add pipeline tag, library name and update links/citation

Hi! I'm Niels from the community science team at Hugging Face.

This PR improves the model card metadata by adding:
1. The `pipeline_tag: image-text-to-text` to categorize the model correctly.
2. The `library_name: transformers` since the model is fully compatible with Hugging Face `transformers` library.

Additionally, I've updated the Markdown content to:
- Add a link to the official GitHub repository in the header badges.
- Update the BibTeX citation to include the full list of authors as specified in the GitHub README.

Feel free to merge if this looks good to you!

README.md

@@ -1,10 +1,13 @@
 ---
-license: apache-2.0
-language:
-- en
 base_model:
 - Qwen/Qwen3-VL-4B-Instruct
+language:
+- en
+license: apache-2.0
+library_name: transformers
+pipeline_tag: image-text-to-text
 ---
+
 <p align="center">
   <img src="assets/s_icon.png" width="48" alt="SingGuard icon">
 </p>
@@ -16,7 +19,8 @@ base_model:
 <p align="center">
     <a href="https://huggingface.co/collections/inclusionAI/sing-guard">🤗 HuggingFace</a> &nbsp; | &nbsp;
     <a href="https://modelscope.cn/collections/inclusionAI/Sing-Guard">🤖 ModelScope</a> &nbsp; | &nbsp;
-    <a href="https://arxiv.org/abs/2606.22873">📄 Paper</a>
+    <a href="https://arxiv.org/abs/2606.22873">📄 Paper</a> &nbsp; | &nbsp;
+    <a href="https://github.com/inclusionAI/Sing-Guard">💻 GitHub</a>
 </p>
 
 ## Introduction
@@ -386,7 +390,7 @@ The default full policy contains the following risk categories. When a dynamic p
 ```bibtex
 @article{singguard2026,
   title={SingGuard: Policy-Adaptive Multimodal Safeguarding with Dynamic Reasoning},
-  author={Ant Group},
+  author={Li, Zongyi and Yin, Shenglin and Liao, Bingyan and Bai, Yichen and He, Liangbo and Xiu, Kedong and Li, Hongcheng and Lan, Jun and Cui, Shiwen and Xu, Tingting and Song, Chuanbiao and Yu, Zijian and Hong, Yan and Li, Siyuan and Xu, Chao and Zhu, Huijia and Meng, Changhua and Wang, Weiqiang},
   year={2026}
 }
 ```