basic working app currently wworking on the sync to work

backend/.env.example

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+# Database
+DATABASE_URL=postgresql://postgres:postgres@localhost:5432/carry_your_live
+
+# JWT
+JWT_SECRET=your-super-secret-jwt-key-change-in-production-min-32-chars
+
+# Server
+PORT=3000
+NODE_ENV=development
+
+# Frontend URL (for CORS)
+FRONTEND_URL=http://localhost:8081