New "Dehnen/Stretch" module for guided stretching with timer-based sessions,
mobility self-assessments, streak tracking, and configurable reminders.
Includes: 22 seed exercises, 5 preset routines (morning, desk break, evening,
upper body, lower body), fullscreen session player with Performance.now() timer
and Wake Lock, 6-step mobility assessment wizard with scoring, 30-day heatmap,
body region balance chart, custom routine builder, and reminder management.
Registered in module-registry, encryption registry (5 tables), database v9,
seed-registry, app-icons, mana-apps, and workbench app-registry.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
