- Add Prisma ORM with SQLite for server-side data persistence
- Create UserPreferences and UsageEntry models
- Add API routes for preferences and usage data CRUD operations
- Update storage.ts to use fetch API calls instead of localStorage
- Update components to use async data fetching
- Data now persists across devices for each user account
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
