fixed several runtime errors from client error reports

lib/notification/notification_service.dart

@@ -25,7 +25,12 @@ class NotificationService {
     // iOS Talk category mirrors the Android inline reply + mark-as-read actions
     // so both platforms expose the same quick actions. The actual delivery of
     // these while the app is terminated is handled by the (Phase 3) NSE.
+    // The plugin defaults to prompting here, which would block startup on the
+    // OS dialog; the prompt belongs to maybePromptTalkNotifications instead.
     final iosSettings = DarwinInitializationSettings(
+      requestAlertPermission: false,
+      requestSoundPermission: false,
+      requestBadgePermission: false,
       notificationCategories: [
         DarwinNotificationCategory(
           PushRenderer.iosTalkCategory,