feat: 实现日历提醒 in-app fallback 机制及通知服务重构

apps/lib/features/calendar/ui/screens/calendar_event_detail_screen.dart

@@ -9,11 +9,13 @@ import '../../../../shared/widgets/app_loading_indicator.dart';
 import '../../../../shared/widgets/back_title_page_header.dart';
 import '../../../../shared/widgets/detail_header_action_menu.dart';
 import '../../../../shared/widgets/destructive_action_sheet.dart';
+import '../../../../shared/widgets/toast/toast.dart';
+import '../../../../shared/widgets/toast/toast_type.dart';
 import '../../data/services/calendar_service.dart';
 import '../../data/models/schedule_item_model.dart';
 import '../utils/event_color_resolver.dart';
 
-enum _CalendarHeaderAction { edit, delete, share }
+enum _CalendarHeaderAction { edit, delete, share, archive }
 
 class CalendarEventDetailScreen extends StatefulWidget {
   final String eventId;
@@ -190,6 +192,17 @@ class _CalendarEventDetailScreenState extends State<CalendarEventDetailScreen> {
         ),
       );
     }
+    if (event.status != ScheduleStatus.archived && event.canEdit) {
+      final isExpired = _isEventExpired(event);
+      items.add(
+        DetailHeaderActionItem<_CalendarHeaderAction>(
+          value: _CalendarHeaderAction.archive,
+          label: '归档',
+          icon: LucideIcons.archive,
+          enabled: !isExpired,
+        ),
+      );
+    }
 
     return DetailHeaderActionMenu<_CalendarHeaderAction>(
       items: items,
@@ -197,6 +210,14 @@ class _CalendarEventDetailScreenState extends State<CalendarEventDetailScreen> {
     );
   }
 
+  bool _isEventExpired(ScheduleItemModel event) {
+    final now = DateTime.now();
+    if (event.endAt != null) {
+      return event.endAt!.isBefore(now);
+    }
+    return event.startAt.isBefore(now);
+  }
+
   void _handleHeaderAction(
     _CalendarHeaderAction action,
     ScheduleItemModel event,
@@ -213,6 +234,9 @@ class _CalendarEventDetailScreenState extends State<CalendarEventDetailScreen> {
       case _CalendarHeaderAction.share:
         context.push(AppRoutes.calendarEventShare(event.id));
         return;
+      case _CalendarHeaderAction.archive:
+        _archiveEvent();
+        return;
     }
   }
 
@@ -460,6 +484,29 @@ class _CalendarEventDetailScreenState extends State<CalendarEventDetailScreen> {
     context.pop();
   }
 
+  Future<void> _archiveEvent() async {
+    final confirmed = await showDestructiveActionSheet(
+      context,
+      title: '归档日程',
+      message: '归档后此日程将标记为过期，确定要归档吗？',
+      confirmText: '确认归档',
+    );
+    if (!confirmed) {
+      return;
+    }
+    try {
+      await sl<CalendarService>().archiveEvent(widget.eventId);
+      await _loadEvent();
+      if (mounted) {
+        Toast.show(context, '已归档', type: ToastType.success);
+      }
+    } catch (e) {
+      if (mounted) {
+        Toast.show(context, '归档失败', type: ToastType.error);
+      }
+    }
+  }
+
   String _formatRangeLabel(DateTime startAt, DateTime? endAt) {
     final dateLabel =
         '${startAt.month}月${startAt.day}日 ${_getWeekday(startAt.weekday)}';