/**
 * View Data Layer Tests - Dashboard Functionality
 * 
 * This test file will cover the view data layer for dashboard functionality.
 * 
 * The view data layer is responsible for:
 * - DTO → UI model mapping
 * - Formatting, sorting, and grouping
 * - Derived fields and defaults
 * - UI-specific semantics
 * 
 * This layer isolates the UI from API churn by providing a stable interface
 * between the API layer and the presentation layer.
 * 
 * Test coverage will include:
 * - Dashboard data transformation and aggregation
 * - User statistics and metrics view models
 * - Activity feed data formatting and sorting
 * - Derived dashboard fields (trends, summaries, etc.)
 * - Default values and fallbacks for dashboard views
 * - Dashboard-specific formatting (dates, numbers, percentages, etc.)
 * - Data grouping and categorization for dashboard components
 * - Real-time data updates and state management
 */