feat(NetworkMap): adjust network map scheduler to run initial tick after 10 seconds and enhance cache handling in dashboard for better data display

backend/services/networkMapScheduler.js

@@ -396,10 +396,12 @@ function initNetworkMapScheduler(logger, port) {
     const intervalMs = settings.intervalMinutes * 60 * 1000;
     log.info(
       { component: 'network-map-scheduler', intervalMinutes: settings.intervalMinutes },
-      'Network map scheduler started (first run in %d min)',
+      'Network map scheduler started (first run in 10 s, then every %d min)',
       settings.intervalMinutes
     );
     schedulerTimer = setInterval(tick, intervalMs);
+    // Первый запуск через 10 сек, чтобы кеш появился вскоре после старта сервера
+    setTimeout(() => tick(), 10 * 1000);
   }
 
   schedule();