Update README.md

README.md

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 ---
 license: cc-by-sa-4.0
-arxiv: "2510.07414"
----
+---
+
+@article{li2025haystack,
+  title={Haystack Engineering: Context Engineering for Heterogeneous and Agentic Long-Context Evaluation},
+  author={Mufei Li and Dongqi Fu and Limei Wang and Si Zhang and Hanqing Zeng and Kaan Sancak and Ruizhong Qiu and Haoyu Wang and Xiaoxin He and Xavier Bresson and Yinglong Xia and Chonglin Sun and Pan Li},
+  journal={arXiv preprint arXiv:2510.07414},
+  year={2025}
+}