/**
 * View Data Layer Tests - Auth Functionality
 * 
 * This test file will cover the view data layer for auth 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:
 * - Login form data transformation and validation
 * - Signup form view models and field formatting
 * - Forgot password flow data handling
 * - Reset password token validation and UI state
 * - Auth error message formatting and display
 * - User session data mapping for UI components
 * - Derived auth state fields (isAuthenticated, authStatus, etc.)
 * - Default values and fallbacks for auth views
 * - Auth-specific formatting (password strength, email validation, etc.)
 */