ad7ae17985
Implemented comprehensive collection management features: Backend: - Created collectionService with 9 API functions - Added useCollection React hook for state management - Implemented batch processing for performance - Added full authentication and authorization Frontend: - Enhanced DeckManager with collection status indicators - Added "Add All Missing Cards" bulk operation button - Added individual "Add Card" buttons for missing cards - Implemented loading states and error handling - Added responsive design with visual badges Features: - Visual indicators (yellow for missing, green for owned) - Bulk add all missing cards functionality - Individual card addition with quantity tracking - Real-time collection synchronization - Success/error notifications Tests: Build passing (5.98s), linting passing, TypeScript passing Resolves: #ISSUE-10 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>