README: replace arXiv-ID-forthcoming placeholders with canonical arXiv:2605.02063

README.md

@@ -26,7 +26,7 @@ integrated, cooperative) with one of seven random seeds.
 
 **Companion technical report**: *Coopetition-Gym v1: A Formally Grounded
 Platform for Mixed-Motive Multi-Agent Reinforcement Learning under Strategic
-Coopetition*. Pant and Yu, arXiv preprint (May 2026; canonical arXiv ID forthcoming).
+Coopetition*. Pant and Yu, [arXiv:2605.02063](https://arxiv.org/abs/2605.02063), 2026.
 
 **Companion code**: https://github.com/vikpant/strategic-coopetition
 
@@ -169,13 +169,12 @@ for the complete Gebru et al. datasheet.
 ## Citation
 
 ```bibtex
-@misc{pant2026coopetitiongym,
+@article{pant2026coopetitiongym,
     title={Coopetition-Gym v1: A Formally Grounded Platform for Mixed-Motive
            Multi-Agent Reinforcement Learning under Strategic Coopetition},
     author={Pant, Vik and Yu, Eric},
-    year={2026},
-    publisher={arXiv},
-    note={Companion technical report; arXiv ID forthcoming}
+    journal={arXiv preprint arXiv:2605.02063},
+    year={2026}
 }
 
 @software{pant2026coopetitiongym_software,