Optimize mobile-first responsive design and PWA features

[Steake]

Transform the application into a mobile-first experience with progressive web app capabilities for better user adoption and accessibility.

Mobile Optimization:

• Touch-optimized wallet connection flow
• Responsive reputation score displays with mobile-friendly charts
• Simplified navigation for small screens
• Mobile-optimized ZK proof generation status
• Gesture support for trust network exploration

Progressive Web App Features:

• Service worker for offline functionality
• App manifest for home screen installation
• Push notifications for claim status updates
• Background sync for reputation score updates
• Offline mode with cached data display

Performance Improvements:

• Image optimization and lazy loading
• Critical CSS inlining for faster load times
• Bundle splitting for mobile-specific code
• Touch event optimization
• Reduced JavaScript bundle size

Testing Requirements:

• Cross-device testing on iOS/Android
• Touch interaction testing
• Network connectivity edge cases
• Battery usage optimization