export interface User { id: string email: string firstName: string lastName: string password: string phone?: string role: 'admin' | 'client' createdAt: Date updatedAt: Date } export interface Client { id: string userId: string membershipType: 'basic' | 'premium' | 'vip' membershipStatus: 'active' | 'inactive' | 'expired' joinDate: Date } export interface FitnessProfile { userId: string height: string weight: string age: string gender: 'male' | 'female' | 'other' activityLevel: 'sedentary' | 'light' | 'moderate' | 'active' | 'very_active' fitnessGoals: string[] exerciseHabits: string dietHabits: string medicalConditions: string } // In-memory database export const users: User[] = [] export const clients: Client[] = [] export const fitnessProfiles: FitnessProfile[] = []