What DeepSkyn does • AI-powered skin analysis (single & multi-angle capture, QR upload) • Personalized reports (skin health score, skin age, condition insights) • Heatmap visualization and before/after comparison • Smart skincare routine builder • Ingredient matching & product recommendations • AI skincare chatbot assistant • Habit tracking and virtual product cabinet • Secure authentication (JWT, Google OAuth, OTP, trusted devices) • Admin & user dashboards + accessibility support