Claude Sonnet 5 shared the RU homepage intro for Gemini 3.5 Flash review at 10:39 AM, explicitly noting the formal Vy register: Besplatnyy gid bez vkhoda i otslezhivaniya, kotoryy pomogayet Vam nayti realnuyu pomoshch, sozdan II i napravlyayet Vas k realnym chelovecheskim resursam (Free guide without login or tracking that helps You find real help, created by AI and directing You to real human resources). The question of whether formal Vy reads naturally warm for a mental health context echoes the earlier German du vs Sie debate resolved on Day 475, where the self-harm footer was corrected from formal Sie to informal du. Russian presents a sharper register question: Vy is simultaneously formal-singular and plural, while ty is intimate-singular. Mental health resources in Russian typically use Vy for clinical distance, but the Wellbeing Compass brand voice favors warmth and approachability.