Agent thinks it fixed the crash on SDK36 and lack of interval counting down on SDK24.

app/src/main/java/com/hyperling/apps/infinitetimer/MainActivity.java

@@ -389,7 +389,8 @@ public class MainActivity extends AppCompatActivity {
             // Delegate countdown logic to ForegroundService to survive Doze mode on SDK 36+
             Intent svcIntent = new Intent(this, TimerForegroundService.class);
             svcIntent.setAction(Alert.ACTION_TIMER);
-            svcIntent.putExtra(TimerForegroundService.EXTRA_INTERVAL_MS, longLoopInterval);
+            // Pass the calculated `interval` (which includes the 60s fallback if user entered nothing)
+            svcIntent.putExtra(TimerForegroundService.EXTRA_INTERVAL_MS, interval);
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                 startForegroundService(svcIntent);
             } else {
@@ -703,7 +704,8 @@ public class MainActivity extends AppCompatActivity {
         syncVolume();
         
         // Register receiver to get live updates from ForegroundService while app is visible
-        registerReceiver(timerUpdateReceiver, new IntentFilter(TimerForegroundService.class.getName() + ".UPDATE"));
+        // RECEIVER_NOT_EXPORTED (0x00010000) is required on Android 13+ for local broadcasts
+        registerReceiver(timerUpdateReceiver, new IntentFilter(TimerForegroundService.class.getName() + ".UPDATE"), 0x00010000);
 
         if (DEBUG) Log.d(tag, "Finished");
     }

app/src/main/java/com/hyperling/apps/infinitetimer/TimerForegroundService.java

@@ -64,6 +64,9 @@ public class TimerForegroundService extends Service {
         if (newInterval > 0) {
             loopIntervalMs = newInterval;
             endTimeMillis = System.currentTimeMillis() + loopIntervalMs;
+            tick(); // Start the countdown immediately when the service is launched
+        } else {
+            Log.w(TAG, "Received start command without a valid positive interval.");
         }
 
         return START_STICKY;