main, add output to see if the alarm going off really does schedule the next alarm.

lib/main.dart

@@ -249,6 +249,8 @@ class _HomeScreenState extends State<HomeScreen> {
       alarmTime = alarmTime.add(const Duration(days: 1));
     }
 
+    _debug("_scheduleAlarm, alarmTime=" + alarmTime.toIso8601String());
+
     if (Platform.isLinux) {
       // Linux: use a Timer (app must stay open)
       _alarmTimer?.cancel();