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_dayweek_screen.dart

@@ -9,6 +9,7 @@ import '../../data/models/schedule_item_model.dart';
 import '../../data/services/calendar_service.dart';
 import '../calendar_state_manager.dart';
 import '../calendar_time_utils.dart';
+import '../utils/event_color_resolver.dart';
 import '../dayweek/day_event_layout_engine.dart';
 import '../dayweek/day_timeline_metrics.dart';
 import '../dayweek/day_view_scale.dart';
@@ -614,7 +615,10 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
     required DayEventLayout layout,
     required double boardHeight,
   }) {
-    final eventColor = _parseColor(layout.event.metadata?.color);
+    final eventColor = resolveEventColor(
+      status: layout.event.status,
+      colorHex: layout.event.metadata?.color,
+    );
     final isCompact = layout.visualHeight < 20;
     final tapHeight = layout.visualHeight < _minEventTapHeight
         ? _minEventTapHeight
@@ -687,17 +691,6 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
     );
   }
 
-  Color _parseColor(String? hex) {
-    if (hex == null || hex.isEmpty) {
-      return AppColors.blue600;
-    }
-    try {
-      return Color(int.parse(hex.replaceFirst('#', '0xFF')));
-    } catch (_) {
-      return AppColors.blue600;
-    }
-  }
-
   Widget _buildBottomDock() {
     return BottomDock(
       activeTab: DockTab.calendar,