Add enums for ReviewStatus, TrackMaterial, LaunchType, RideCategory, and RollerCoasterType; implement Designer and RideModel models; create migrations for ride_models and helpful_votes tables; enhance RideGalleryComponent documentation

memory-bank/design/CodeDuplication.md

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+# Code Duplication Analysis
+
+## Photo Management Components
+
+### Current Duplication
+- `PhotoGalleryComponent`, `PhotoManagerComponent`, and `FeaturedPhotoSelectorComponent` share similar:
+  - Park model mounting logic
+  - Photo collection handling
+  - Basic photo management operations
+
+### Recommendation
+1. Create a base photo component trait/abstract class
+2. Extract common photo loading and management logic
+3. Implement specific features in child components
+
+## Statistics Services
+
+### Current Duplication
+- `StatisticsRollupService` and `StatisticsCacheService` have parallel implementations:
+  - Similar entity iteration (areas, parks, operators)
+  - Matching method patterns for each entity type
+  - Redundant update/cache cycles
+
+### Recommendation
+1. Create a unified statistics processor
+2. Implement the Strategy pattern for different statistics operations
+3. Use a single iteration cycle for both updating and caching
+
+## Location Components
+
+### Current Duplication
+- `LocationMapComponent` and `LocationSelectorComponent` duplicate:
+  - Location validation logic
+  - State management for coordinates
+  - Selection handling
+
+### Recommendation
+1. Extract common location logic to a trait
+2. Create a shared location validation service
+3. Implement a central location state manager
+
+## Action Items
+
+1. Immediate
+   - Create base traits/abstracts for common functionality
+   - Extract duplicate validation logic to services
+   - Document common patterns for reuse
+
+2. Long-term
+   - Implement unified statistics processing
+   - Create shared state management for locations
+   - Establish component inheritance hierarchy
+
+## Benefits
+
+1. Maintainability
+   - Single source of truth for common logic
+   - Easier updates and bug fixes
+   - Consistent behavior across components
+
+2. Performance
+   - Reduced memory usage
+   - Optimized service calls
+   - Better caching opportunities
+
+3. Development
+   - Clearer code organization
+   - Reduced testing surface
+   - Easier feature additions