Add code link to ExVerus project entry (#2626)

Author: ethanyiwu

source/docs/publications-and-projects/_projects/exverus.md

@@ -5,5 +5,6 @@ venue: "Proceedings of the International Conference on Machine Learning (ICML)"
 date: 2026-07-09
 type: external 
 pdf: https://arxiv.org/pdf/2603.25810
+code: https://github.com/claudeyj/exverus
 
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