Add AUTH_URL for NextAuth v5 compatibility

- NextAuth v5 uses AUTH_URL instead of NEXTAUTH_URL
- Keep both for backward compatibility
- Fixes UntrustedHost error

.env

@@ -1,6 +1,7 @@
 DATABASE_URL="mysql://lists_app:ListsApp@2025!@192.168.4.20:3306/ultimate_lists"
 
 # NextAuth Configuration
+AUTH_URL=http://localhost:3500
 NEXTAUTH_URL=http://localhost:3500
 NEXTAUTH_SECRET=your-secret-key-here-please-change-in-production
 AUTH_SECRET=your-secret-key-here-please-change-in-production

docker-compose.yml

@@ -8,6 +8,7 @@ services:
     environment:
       - NODE_ENV=production
       - DATABASE_URL=${DATABASE_URL}
+      - AUTH_URL=${AUTH_URL:-http://localhost:3500}
       - NEXTAUTH_URL=${NEXTAUTH_URL:-http://localhost:3500}
       - NEXTAUTH_SECRET=${NEXTAUTH_SECRET}
       - AUTH_SECRET=${AUTH_SECRET}