React Phonebook App

React Contact Book App — a full-featured contact manager where I practiced backend integration, state management, and user authentication.

- Users can register, log in, and securely manage their contact list.
- Core features include adding, editing, deleting, and searching contacts.
- Enhanced with avatars, favorite contacts, contact groups, and A–Z filtering.
- Global state is handled using Redux Toolkit (createSlice & createAsyncThunk).
- Axios manages all HTTP requests