feat: 实现日历提醒完整功能（操作执行、通知服务重构、归档）

- 新增 ReminderActionExecutor 处理取消/稍后提醒操作
- 新增 ReminderOutboxStore 本地存储待处理操作
- 重构 LocalNotificationService 支持聚合提醒和交互操作
- 新增 event_color_resolver 工具类统一颜色解析
- 新增 CalendarService.archiveEvent 归档方法
- 增强 ModelTracking 支持缓存命中、推理token和成本追踪
- 添加 qwen3.5-35b-a3b 模型配置
- 更新 AndroidManifest 全屏intent权限
- 补充相关单元测试和文档

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

@@ -7,6 +7,7 @@ import '../../../../core/theme/design_tokens.dart';
 import '../../../../shared/widgets/app_pressable.dart';
 import '../calendar_state_manager.dart';
 import '../calendar_time_utils.dart';
+import '../utils/event_color_resolver.dart';
 import '../widgets/bottom_dock.dart';
 import '../widgets/create_event_sheet.dart';
 import '../../data/models/schedule_item_model.dart';
@@ -360,7 +361,10 @@ class _CalendarMonthScreenState extends State<CalendarMonthScreen>
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
                 ...displayEvents.map((event) {
-                  final color = _parseColor(event.metadata?.color);
+                  final color = resolveEventColor(
+                    status: event.status,
+                    colorHex: event.metadata?.color,
+                  );
                   return AppPressable(
                     borderRadius: BorderRadius.circular(AppRadius.sm),
                     onTap: () {
@@ -415,15 +419,6 @@ class _CalendarMonthScreenState extends State<CalendarMonthScreen>
     );
   }
 
-  Color _parseColor(String? hex) {
-    if (hex == null || hex.isEmpty) return AppColors.blue600;
-    try {
-      return Color(int.parse(hex.replaceFirst('#', '0xFF')));
-    } catch (_) {
-      return AppColors.blue600;
-    }
-  }
-
   void _showMonthPicker() {
     var selectedYear = _currentMonth.year;
     var selectedMonth = _currentMonth.month;