Add binary-compatible collection watchdog

reliability.go

@@ -63,6 +63,24 @@ type monitorTracker struct {
 	duration    time.Duration
 }
 
+func runCollectionWatchdog(monitor *monitorTracker) {
+	started := time.Now()
+	ticker := time.NewTicker(15 * time.Second)
+	defer ticker.Stop()
+	for range ticker.C {
+		monitor.mu.RLock()
+		last := monitor.lastSuccess
+		monitor.mu.RUnlock()
+		if time.Since(started) < 2*time.Minute {
+			continue
+		}
+		if last.IsZero() || time.Since(last) > 90*time.Second {
+			log.Printf("Встроенный watchdog: сбор метрик не завершался более 90 секунд; перезапускаем процесс")
+			os.Exit(1)
+		}
+	}
+}
+
 func (m *monitorTracker) record(start time.Time, err error) {
 	m.mu.Lock()
 	defer m.mu.Unlock()

web.go

@@ -122,6 +122,7 @@ func routes(collector *cpuCollector, store *Store) http.Handler {
 	systemHealth := newSystemHealthCollector()
 	activity := newActivityCollector()
 	monitor := &monitorTracker{}
+	go runCollectionWatchdog(monitor)
 	go runUPSShutdownController(store, ups, guests)
 	collect := func() (dashboardMetrics, error) {
 		started := time.Now()