feat(ios): 添加用药计划Widget小组件支持

- 创建medicineExtension小组件，支持iOS桌面显示用药计划
- 实现App Group数据共享机制，支持主应用与小组件数据同步
- 添加AppGroupUserDefaultsManager原生模块，提供跨应用数据访问能力
- 添加WidgetManager和WidgetCenterHelper，实现小组件刷新控制
- 在medications页面和Redux store中集成小组件数据同步逻辑
- 支持实时同步今日用药状态（待服用/已服用/已错过）到小组件
- 配置App Group entitlements (group.com.anonymous.digitalpilates)
- 更新Xcode项目配置，添加WidgetKit和SwiftUI框架支持

app/(tabs)/medications.tsx

@@ -9,6 +9,7 @@ import { useColorScheme } from '@/hooks/useColorScheme';
 import { medicationNotificationService } from '@/services/medicationNotifications';
 import { fetchMedicationRecords, fetchMedications, selectMedicationDisplayItemsByDate } from '@/store/medicationsSlice';
 import { DEFAULT_MEMBER_NAME } from '@/store/userSlice';
+import { convertMedicationDataToWidget, refreshWidget, syncMedicationDataToWidget } from '@/utils/widgetDataSync';
 import { useFocusEffect } from '@react-navigation/native';
 import dayjs, { Dayjs } from 'dayjs';
 import 'dayjs/locale/zh-cn';
@@ -105,10 +106,25 @@ export default function MedicationsScreen() {
           const medications = await dispatch(fetchMedications({ isActive: true })).unwrap();
           
           // 并行执行获取药物记录和安排通知
-          await Promise.all([
+          const [recordsAction] = await Promise.all([
             dispatch(fetchMedicationRecords({ date: selectedKey })),
             medicationNotificationService.rescheduleAllMedicationNotifications(medications),
           ]);
+          
+          // 同步数据到小组件（仅同步今天的）
+          const today = dayjs().format('YYYY-MM-DD');
+          const records = recordsAction.payload as any;
+          if (selectedKey === today && records?.records) {
+            const medicationData = convertMedicationDataToWidget(
+              records.records,
+              medications,
+              selectedKey
+            );
+            await syncMedicationDataToWidget(medicationData);
+            
+            // 刷新小组件
+            await refreshWidget();
+          }
         } catch (error) {
           console.error('刷新数据或重新安排药品通知失败:', error);
         }