*Implement Proper Caching Strategy for Property Data

[godwinameh]

Issue: Inconsistent caching approach using localStorage for offline features without proper cache invalidation, synchronization, or storage management.

Business Impact:

• Data inconsistency between cached and live data
• Poor offline user experience with stale or corrupted cache
• Storage quota issues on mobile devices
• Increased API costs from unnecessary data requests

Technical Requirements:

• Implement proper caching strategy with TTL and invalidation
• Add cache synchronization mechanisms for online/offline transitions
• Establish storage quota management and cleanup procedures
• Add cache versioning and migration strategies
• Implement intelligent cache warming and preloading

Files: src/components/mobile/OfflinePropertyCache.tsx, data layer components
Acceptance Criteria:

• Consistent caching strategy implemented across all data types
• Cache invalidation working properly for data updates
• Storage quota management preventing overflow issues
• Cache synchronization reliable across online/offline states
• Cache versioning handles data structure changes
• Performance improvements measurable through reduced API calls
• Cache analytics and monitoring implemented