Add code repository link to phd.md

Author: azuxmioy

_publications/2025/phd.md

@@ -10,6 +10,7 @@ video: https://youtu.be/Ujd7pOn8YtM
 talk: 
 paper: http://arxiv.org/abs/2508.21257
 poster: https://drive.google.com/file/d/10Rp1rOqZgGMEPPl6L0oinaBe_rsvowRS/view?usp=drive_link
+code: https://github.com/azuxmioy/PHD
 data:
 conference_url: https://iccv.thecvf.com/
 equal_contributions: 7, 8