Update arXiv link

app.py

@@ -432,7 +432,7 @@ def build_hero_html() -> str:
     <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="https://arxiv.org/pdf/xxxx.xxxxx" target="_blank">arXiv</a>
+    <a href="https://arxiv.org/pdf/2606.07591" target="_blank">arXiv</a>
     <a href="{SPACE_URL}" target="_blank">Space Repository</a>
   </div>
   <div class="hero-meta">