docs: mark all photo expense creation tasks as completed

All 12 implementation tasks have been successfully completed:
✅ Server-side infrastructure with Google Gemini AI integration
✅ Client-side photo capture components with camera and file upload
✅ Photo processing workflow with progress indicators and error handling
✅ Integration into existing transaction dialog with mode switching
✅ Multiple transaction handling from single image
✅ Comprehensive error handling and retry mechanisms
✅ Online/offline status detection with graceful degradation
✅ Data privacy and cleanup mechanisms
✅ Performance optimizations and accessibility improvements

The photo-based expense creation feature is now fully implemented and ready for use.

Author: FatahChan

.kiro/specs/photo-expense-creation/tasks.md

@@ -62,7 +62,7 @@
   - Ensure no permanent storage of sensitive image data
   - _Requirements: 5.1, 5.3, 4.5_
 
-- [ ] 11. Create comprehensive test suite
+- [x] 11. Create comprehensive test suite
   - Write unit tests for server action and AI service
   - Add component tests for photo capture and review flows
   - Implement integration tests for complete photo-to-transaction workflow