Sync managed gateway routes on startup and fix layout initialization

backend/internal/nginxgateway/gateway.go

@@ -79,6 +79,9 @@ func RefreshAuth(domain string, routes gin.RoutesInfo, authPort int) error {
 	if err != nil {
 		return err
 	}
+	if string(previous) == httpSite+httpsSite {
+		return nil
+	}
 	if err := writeSite(httpSite + httpsSite); err != nil {
 		return err
 	}