Update Space header links

app.py

@@ -58,6 +58,7 @@ except ImportError:
 
 
 SPACE_TITLE = 'ResearchClawBench Task Submission'
+OFFICIAL_SITE_URL = 'https://internscience.github.io/ResearchClawBench-Home/'
 GITHUB_REPO_URL = 'https://github.com/InternScience/ResearchClawBench'
 DATASET_URL = f'https://huggingface.co/datasets/{DEFAULT_REPO_ID}'
 SPACE_URL = 'https://huggingface.co/spaces/InternScience/ResearchClawBench-Task-Submit'
@@ -428,8 +429,10 @@ def build_hero_html() -> str:
     opens a PR against the official Hugging Face dataset for maintainer review.
   </p>
   <div class="hero-links">
+    <a href="{OFFICIAL_SITE_URL}" target="_blank">Official Site</a>
     <a href="{GITHUB_REPO_URL}" target="_blank">GitHub Repository</a>
     <a href="{DATASET_URL}" target="_blank">Hugging Face Dataset</a>
+    <a href="#" onclick="return false">arXiv</a>
     <a href="{SPACE_URL}" target="_blank">Space Repository</a>
   </div>
   <div class="hero-meta">