fix：第一轮跑

lib/common/push/notification_permission.dart

@@ -0,0 +1,41 @@
+import 'package:flutter/foundation.dart';
+import 'package:device_info_plus/device_info_plus.dart';
+import 'package:flutter/material.dart';
+import 'package:permission_handler/permission_handler.dart';
+
+import '../storage/storage_keys.dart';
+import '../storage/storage_service.dart';
+import '../widgets/notification_permission_tip.dart';
+
+abstract final class NotificationPermission {
+  static Future<bool> isGranted() async =>
+      !kIsWeb && (await Permission.notification.status).isGranted;
+
+  /// 对齐研听：Android 13+ 由应用解释后主动申请；iOS 由 U-Push 注册 APNs
+  /// 时触发系统授权，绝不展示 Android 的自定义顶部提示。
+  static Future<bool> requestIfNeeded(BuildContext context) async {
+    if (kIsWeb || defaultTargetPlatform != TargetPlatform.android) {
+      return isGranted();
+    }
+    final android = await DeviceInfoPlugin().androidInfo;
+    if (android.version.sdkInt < 33 ||
+        StorageService.to.getBool(storagePushPermissionPrompted)) {
+      return isGranted();
+    }
+    if (await isGranted() || !context.mounted) return true;
+    await showNotificationPermissionTip(context);
+    await StorageService.to.setBool(storagePushPermissionPrompted, true);
+    return (await Permission.notification.request()).isGranted;
+  }
+
+  /// 设置页不使用顶部说明；iOS/Android 都直接请求系统授权。
+  static Future<bool> requestFromSettings() async {
+    if (kIsWeb) return false;
+    final current = await Permission.notification.status;
+    if (current.isGranted) return true;
+    await StorageService.to.setBool(storagePushPermissionPrompted, true);
+    return (await Permission.notification.request()).isGranted;
+  }
+
+  static Future<bool> openSystemSettings() => openAppSettings();
+}