docs: link to live arXiv ID 2604.25441

README.md

@@ -42,7 +42,7 @@ Three branches behind a single interface:
 
 All three share the **voice-prompt recovery** recipe: an 8–11 s same-language reference audio clip + Config B sampling overrides (exaggeration 0.7, temperature 0.6, min_p 0.1).
 
-See the companion paper for the full methodology: *"Praxy Voice: Voice-Prompt Recovery + BUPS for Commercial-Class Indic TTS"* (arXiv 2026).
+See the companion paper for the full methodology: *"Praxy Voice: Voice-Prompt Recovery + BUPS for Commercial-Class Indic TTS"* ([arXiv:2604.25441](https://arxiv.org/abs/2604.25441)).
 
 ## Local run