[APP] Design the reading companion app #38
Description
Design the PWA reading companion. Key features:
- Article browser organized by domain (19 domains, 4 pillars)
- Personal reading scheduler: select articles, assign to weeks
- Push notifications: reminders to read scheduled articles
- Progress tracking: % of articles read per domain
- Readiness score: 'You've completed 80% of the Eye Care domain'
- Same content as website — no separate content management
- Bilingual (EN/ZH) matching website
- Offline reading capability via service worker caching
Must be free. Same 'Calm Authority' design system as website.
Milestone: 4 - Mobile App (PWA)