Implemented comprehensive frontend localization infrastructure supporting
5 languages (English, Spanish, French, Portuguese, Chinese) with measurement
unit preferences (Metric/Imperial). This lays the foundation for international
user support.
**Core Infrastructure:**
- Installed i18next, react-i18next, i18next-browser-languagedetector
- Created I18nProvider component integrated into app layout
- Configured i18next with language detection and localStorage persistence
- Created 35 translation files (5 languages × 7 namespaces)
**Translation Namespaces:**
- common: App-wide UI elements, navigation, actions
- tracking: Activity tracking (feeding, sleep, diaper, milestones)
- ai: AI assistant chat interface
- auth: Authentication flows (login, signup, password reset)
- settings: Settings and preferences
- onboarding: Onboarding flow
- errors: Error messages and validation
**Custom Hooks:**
- useTranslation: Type-safe translation wrapper
- useLocale: Language and measurement system management
- useFormatting: Date, time, number, and unit formatting
**Measurement Unit Support:**
- Created unit conversion utilities (weight, height, temperature, volume)
- Metric: kg, cm, °C, ml
- Imperial: lb, in, °F, oz
- Bidirectional conversion functions
**UI Components:**
- LanguageSelector: Dropdown to change app language
- MeasurementUnitSelector: Toggle between Metric/Imperial
- Integrated both into Settings page Preferences section
**Next Steps (Remaining):**
- Add measurement preferences to backend user schema
- Create onboarding flow with language/measurement selection
- Apply translations to existing components (dashboard, tracking forms)
- Implement multi-language AI responses
- Add professional translations (currently using basic translations)
**File Highlights:**
- lib/i18n/config.ts: i18next configuration
- hooks/useFormatting.ts: Formatting utilities with locale support
- lib/utils/unitConversion.ts: Unit conversion logic
- components/settings/*Selector.tsx: Language and measurement selectors
- locales/*/: Translation files for 5 languages
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Frontend Compliance Features:
- Created compliance API client (data export, account deletion, deletion status)
- Added DataExport component with download functionality
- Added AccountDeletion component with 30-day grace period UI
- Updated Settings page with Privacy & Compliance sections
COPPA Age Verification:
- Added date of birth field to registration
- Age calculation with COPPA compliance (under 13 blocked)
- Parental email and consent for users 13-17
- Dynamic form validation based on age
Privacy & Terms:
- Separate checkboxes for Terms of Service and Privacy Policy
- Required acceptance for registration
- Links to policy pages
Completes GDPR Right to Data Portability and Right to Erasure.
Completes COPPA parental consent requirements.
- Create biometric API client with WebAuthn methods
- Add BiometricSettings component for credential management
- Support Face ID, Touch ID, Windows Hello enrollment
- Display list of enrolled credentials with metadata
- Add/remove/rename biometric credentials
- Check browser and platform authenticator support
- Integrate into settings page with animations
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Implements user interface for viewing and managing active sessions:
Session Management Features:
- SessionsManagement component with full session management UI
- List all active sessions with device information
- Platform-specific icons (Computer, Phone, Tablet)
- Current session indicator with green chip
- Session details: device fingerprint, platform, last used, created date
- Revoke individual sessions with confirmation dialog
- Revoke all sessions except current with bulk action
- Real-time session count display
User Experience:
- Visual device type indicators
- Human-readable time formatting (e.g., "2 hours ago")
- Current session clearly marked and protected from removal
- Warning dialogs before revoking sessions
- Success/error feedback with alerts
- Loading states for all operations
- Empty state handling
API Integration:
- Sessions API client in lib/api/sessions.ts
- Get all sessions
- Get session count
- Revoke specific session
- Revoke all sessions except current
- Proper error handling and user feedback
Settings Page Integration:
- Added Sessions Management section
- Placed after Security/MFA settings
- Animated transitions with staggered delays
- Maintains consistent settings page layout
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
