feat: added live status for TM74TFR

app.go

@@ -769,6 +769,7 @@ func (a *App) startup(ctx context.Context) {
 	// Anonymous usage heartbeat (once/day) so we can gauge active users. No-op
 	// when disabled in Preferences or until the PostHog key is configured.
 	go a.sendTelemetryHeartbeat()
+	go a.liveStatusLoop() // multi-op: heartbeat current activity to shared MySQL
 
 	fmt.Println("OpsLog: db ready at", a.dbPath)
 }