update add feed initial balance on cycle and fix its feature

backend/README.md

@@ -51,6 +51,7 @@ See [../DOCKER.md](../DOCKER.md) for ports, cron, and troubleshooting.
 ## External integrations
 
 - karung-web-admin → `POST /api/v1/karungs/request/` (`KARUNG_WEB_ADMIN_BASE_URL`)
+- Saldo Awal IoT compare → karung-web-admin `GET /api/combined`
 
 ## Docs