Add blog post link to quick links section

- Added blog post as first link in Quick Links with sparkles emoji
- Links now ordered: Blog → Preprint → GitHub → Demo

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -16,6 +16,7 @@ tags:
 Tahoe-x1 is a family of perturbation-trained single-cell foundation models with up to 3 billion parameters, developed by Tahoe Therapeutics. Pretrained on 266 million single-cell transcriptomic profiles including the _Tahoe-100M_ perturbation compendium, Tahoe-x1 achieves state-of-the-art performance on cancer-relevant tasks with 3–30× higher compute efficiency than other cell-state models.
 
 **Quick Links:**
+- ✨ [**Blog Post**](https://www.tahoebio.ai/news/tahoe-x1-blog) - Read our announcement
 - 📄 [**Preprint**](https://www.biorxiv.org/content/10.1101/2025.10.23.683759v1) - Read our preprint on bioRxiv
 - 💻 [**GitHub Repository**](https://github.com/tahoebio/tahoe-x1) - Access the code
 - 🎮 [**Interactive Demo**](https://huggingface.co/spaces/tahoebio/tx1-demo) - Try the model with no code required!