feat(ui):增加首页通知权限请求

@@ -140,6 +140,8 @@ class TodayController extends GetMaterialController {
       'enter_doublefeel_today_status',
       properties: {'user_role': isFriend ? '好友的' : '我的'},
     );
+    // 如果没有通知权限， 这里请求一下权限
+    _requestNotificationAuthorizationIfNeeded();
   }
 
   @override
@@ -184,6 +186,31 @@ class TodayController extends GetMaterialController {
     });
   }
 
+  Future<void> _requestNotificationAuthorizationIfNeeded() async {
+    try {
+      final status = await Permission.notification.status;
+
+      if (status.isGranted) {
+        // 已授权，无需再请求
+        return;
+      }
+
+      if (status.isPermanentlyDenied) {
+        // 用户永久拒绝（Android），引导去设置
+        await openAppSettings();
+        return;
+      }
+
+      // 未决定 → 弹出系统授权弹窗
+      final result = await Permission.notification.request();
+      AppLogger.d(result.isGranted
+          ? 'Notification authorization granted'
+          : 'Notification authorization skipped');
+    } catch (error) {
+      AppLogger.e('Notification authorization failed: $error');
+    }
+  }
+
   Future<void> checkHrvAdBannerVisible() async {
     if (isFriend) {
       showHrvAdBanner.value = false;