🎨 Use feature based folder structure

lib/core/services/notify.dart

@@ -0,0 +1,60 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+// Conditional imports based on platform
+import 'notify.windows.dart' as windows_notify;
+import 'notify.universal.dart' as universal_notify;
+
+// Platform-specific delegation
+Future<void> initializeLocalNotifications() async {
+  if (kIsWeb) {
+    // No local notifications on web
+    return;
+  }
+  if (Platform.isWindows) {
+    return windows_notify.initializeLocalNotifications();
+  } else {
+    return universal_notify.initializeLocalNotifications();
+  }
+}
+
+StreamSubscription? setupNotificationListener(
+  BuildContext context,
+  WidgetRef ref,
+) {
+  if (kIsWeb) {
+    // No notification listener on web
+    return null;
+  }
+  if (Platform.isWindows) {
+    return windows_notify.setupNotificationListener(context, ref);
+  } else {
+    return universal_notify.setupNotificationListener(context, ref);
+  }
+}
+
+Future<void> subscribePushNotification(
+  Dio apiClient, {
+  bool detailedErrors = false,
+}) async {
+  if (kIsWeb) {
+    // No push notification subscription on web
+    return;
+  }
+  if (Platform.isWindows) {
+    return windows_notify.subscribePushNotification(
+      apiClient,
+      detailedErrors: detailedErrors,
+    );
+  } else {
+    return universal_notify.subscribePushNotification(
+      apiClient,
+      detailedErrors: detailedErrors,
+    );
+  }
+}