Implement Image Management and Optimization

[DrunkOnJava]

🖼️ Image Storage and Management System

Current State

• Image IDs stored but no actual image handling
• No image compression or optimization
• Missing thumbnail generation
• No image upload/management UI

Required Implementation

1. Image Storage

   • Implement PhotoRepository with Core Data
   • Store images in app documents directory
   • Generate multiple sizes (thumbnail, medium, full)
   • HEIC/JPEG optimization

2. Image Management UI

   • Multi-image picker
   • Drag-and-drop reordering
   • Image crop/rotate tools
   • Bulk image operations

3. Performance Optimization

   • Lazy loading with placeholders
   • Progressive image loading
   • Memory-efficient image cache
   • Background thumbnail generation

4. CloudKit Sync

   • Upload images to CloudKit
   • Bandwidth-aware sync
   • Offline image queue
   • Conflict resolution

Technical Specs

• Max 10 images per item
• Thumbnail: 150x150
• Medium: 800x800
• Full: Original (max 4K)
• Total storage monitoring

Acceptance Criteria

• Images load quickly
• Memory usage stays low
• Sync works reliably
• UI is responsive during uploads

Parent Epic

Related to #86 (Core Data) and #109 (Performance)

[DrunkOnJava]

Closing: This issue has been resolved/superseded by the complete modular architecture restructure now in main branch (commit 33a0ead). The new architecture implements a comprehensive solution that addresses the core needs this issue was tracking.