Initial commit: React + Django full-stack project setup

- Backend: Django 4.2 + DRF + JWT + GraphQL
- Frontend: React 18 + MobX + styled-components
- Deployment: Docker + Docker Compose + Nginx
- Database: PostgreSQL support
- Documentation: README, INIT, PROJECT_DOCS, TESTING

.env.example

@@ -0,0 +1,22 @@
+# Django Settings
+DJANGO_SECRET_KEY=your-secret-key-here-change-in-production
+DJANGO_DEBUG=False
+
+# Database
+DB_NAME=your_database_name
+DB_USER=your_database_user
+DB_PASSWORD=your_database_password
+DB_HOST=postgres
+DB_PORT=5432
+
+# Allowed Hosts
+ALLOWED_HOSTS=localhost,yourdomain.com
+
+# CORS
+CORS_ALLOWED_ORIGINS=http://localhost,https://yourdomain.com
+
+# Email (optional)
+EMAIL_HOST=smtp.gmail.com
+EMAIL_PORT=587
+EMAIL_HOST_USER=your-email@example.com
+EMAIL_HOST_PASSWORD=your-email-password