Enhance model card with specific tags and main GitHub link

This PR improves the model card for GLM-4.5-Air-FP8 by:
- Adding specific tags (`agentic`, `reasoning`, `code-generation`) to the metadata. These tags reflect the model's core capabilities as described in the paper abstract, enhancing discoverability on the Hugging Face Hub.
- Adding a prominent link to the main GLM-4.5 GitHub repository at the top of the model card. This makes it easier for users to find the primary source code and overall project information.

README.md

@@ -5,6 +5,10 @@ language:
 library_name: transformers
 license: mit
 pipeline_tag: text-generation
+tags:
+- agentic
+- reasoning
+- code-generation
 ---
 
 # GLM-4.5-Air-FP8
@@ -17,6 +21,8 @@ pipeline_tag: text-generation
     <br>
     📖 Check out the GLM-4.5 <a href="https://z.ai/blog/glm-4.5" target="_blank">technical blog</a>, <a href="https://arxiv.org/abs/2508.06471" target="_blank">technical report</a>, and <a href="https://zhipu-ai.feishu.cn/wiki/Gv3swM0Yci7w7Zke9E0crhU7n7D" target="_blank">Zhipu AI technical documentation</a>.
     <br>
+    <img src="https://img.shields.io/badge/GitHub-GLM--4.5-blue?style=flat&logo=github" alt="GitHub Logo" style="display:inline-block; vertical-align:middle; margin-right:5px; height:20px;"> <a href="https://github.com/zai-org/GLM-4.5" target="_blank">Code on GitHub</a>
+    <br>
     📍 Use GLM-4.5 API services on <a href="https://docs.z.ai/guides/llm/glm-4.5">Z.ai API Platform (Global)</a> or <br> <a href="https://docs.bigmodel.cn/cn/guide/models/text/glm-4.5">Zhipu AI Open Platform (Mainland China)</a>.
     <br>
     👉 One click to <a href="https://chat.z.ai">GLM-4.5</a>.