BreathLife: Breathing Age Test

This update is our biggest yet — rebuilt from the ground up to help you breathe better, faster. - CO2 Test upgraded: more accurate breath-hold detection, smoother guided warmup, and cleaner results screen with your breathing age front and center. - 8 breathing exercises: we added 3 new techniques to your library — Coherent Breathing, Extended Exhale, and Alternate Nostril with Retention — each matched to your current level. - Badges redesigned: 42 achievements now track your real milestones — exercise streaks, breathing age improvements, and community contributions. - Full design refresh: every screen has been rebuilt for clarity and speed. Less clutter, more focus on what matters — your progress. - Breathe with your friend with Breathe Together functionality. Thank you for breathing with us. Keep going.f