# State Management Documentation

## State Management Solution

The application uses **Zustand** as the primary state management solution for the following reasons:

- Simplified API with minimal boilerplate
- Strong performance characteristics for complex state
- Good compatibility with React's concurrent features
- Excellent TypeScript support
- Middleware support for additional functionality

## State Structure

The state is divided into several specialized stores for different concerns:

### 1. User Store

Manages authentication state and user profile information.

```javascript
// userStore.js
import create from 'zustand';
import { persist } from 'zustand/middleware';

const useUserStore = create(
  persist(
    (set, get) => ({
      user: null,
      isAuthenticated: false,
      credits: 0,
      isPremium: false,
      
      // Actions
      setUser: (userData) => set({
        user: userData,
        isAuthenticated: true,
        credits: userData.credits,
        isPremium: userData.isPremium
      }),
      
      logout: () => set({
        user: null,
        isAuthenticated: false,
        credits: 0,
        isPremium: false
      }),