feat: 二级页面色彩刷新 + 用药/通知/设备重构 + 后端健康档案/通知管线增强 + 大量测试

## 后端
- 健康档案: 新增手术状态字段 + EF 迁移; HealthArchiveService 新增查询方法
- 健康记录: HealthRecordService 新增批量/统计方法; 契约扩展
- 用药: 新增 MedicationScheduleStatus 枚举; MedicationService 排班逻辑调整
- 通知: EfUserNotificationPipeline 重构; 新增 EfReminderCatchUpService; 通知管线支持更多场景
- 用户: UserService 账号删除逻辑; 新增 local_account_file_cleanup; EfUserRepository 扩展
- AI: medication_agent_handler 微调; prompt_manager 优化; AiConversationService 上下文处理
- Endpoint: doctor/medication/exercise/health/notification/user 等多接口调整
- BackgroundService: health_record_reminder_service 重构, 提醒补漏逻辑
- 测试: 新增 account_deletion/doctor_endpoint/medication_schedule/medication_update/prompt_manager 测试

## 前端
- UI 系统: app_theme 大幅重构; app_colors/app_design_tokens/app_module_visuals 调整; 二级页面色彩刷新
- 主页: home_page 背景渐变 + 消息列表提取 _HomeMessages + 通知检查逻辑; chat_messages_view 全面重构
- 用药: medication_list/edit/checkin 三页重构, 新增 medication_ui_logic 抽取
- 通知: notification_prefs_page 重构, 新增 notification_prefs_logic; notification_center 优化
- 设备: device_management 重构, 新增 device_sync_ui_logic; device_scan 优化
- 趋势图: trend_page 大幅重构
- 登录: login_page 重构
- 个人资料: 新增 profile_edit_page; profile_page 优化
- 运动: 新增 exercise/ 目录 + care_plan_ui_logic
- 其他: remaining_pages/report_pages/health_drawer/admin/doctor 等多页面调整
- 组件: common_widgets/app_empty_state/app_error_state/app_future_view/app_toast/ai_content 优化
- Provider: chat_provider/consultation_provider/data_providers/auth_provider 调整
- AndroidManifest: 移除多余权限
- 测试: 新增 ai_content/care_plan/home_message/login_flow/medication_checkin/medication_ui/notification_prefs/profile_device/secondary_page/swipe_delete 等大量测试

## 文档
- 新增 ui-design-system.md 设计系统文档
- 新增 secondary-page-color-refresh 计划 + specs 目录

health_app/lib/pages/admin/admin_add_doctor_page.dart

@@ -2,7 +2,8 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../../core/app_colors.dart';
 import '../../core/navigation_provider.dart';
-import '../../providers/data_providers.dart' show adminServiceProvider;
+import '../../providers/data_providers.dart'
+    show adminServiceProvider, doctorListProvider;
 import '../../widgets/app_toast.dart';
 
 class AdminAddDoctorPage extends ConsumerStatefulWidget {
@@ -48,6 +49,7 @@ class _AdminAddDoctorPageState extends ConsumerState<AdminAddDoctorPage> {
         'professionalDirection': _directionCtrl.text.trim(),
       });
       if (mounted) {
+        ref.invalidate(doctorListProvider);
         AppToast.show(context, '添加成功', type: AppToastType.success);
         popRoute(ref);
       }
@@ -65,7 +67,7 @@ class _AdminAddDoctorPageState extends ConsumerState<AdminAddDoctorPage> {
     return Scaffold(
       backgroundColor: AppColors.background,
       appBar: AppBar(
-        backgroundColor: Colors.white,
+        backgroundColor: Colors.transparent,
         elevation: 0,
         surfaceTintColor: Colors.transparent,
         title: const Text(

health_app/lib/pages/admin/admin_home_page.dart

@@ -5,25 +5,32 @@ import '../../widgets/admin_drawer.dart';
 import 'admin_doctors_page.dart';
 import 'admin_patients_page.dart';
 
-final adminPageProvider = NotifierProvider<AdminPageNotifier, String>(AdminPageNotifier.new);
+final adminPageProvider = NotifierProvider<AdminPageNotifier, String>(
+  AdminPageNotifier.new,
+);
 
 class AdminPageNotifier extends Notifier<String> {
-  @override String build() => 'doctors';
+  @override
+  String build() => 'doctors';
   void set(String page) => state = page;
 }
 
 class AdminHomePage extends ConsumerWidget {
   const AdminHomePage({super.key});
 
-  @override Widget build(BuildContext context, WidgetRef ref) {
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
     final page = ref.watch(adminPageProvider);
 
     return Scaffold(
       backgroundColor: AppColors.pageGrey,
       appBar: AppBar(
-        backgroundColor: Colors.white,
+        backgroundColor: Colors.transparent,
         elevation: 0,
-        title: const Text('系统管理', style: TextStyle(color: AppColors.textPrimary)),
+        title: const Text(
+          '系统管理',
+          style: TextStyle(color: AppColors.textPrimary),
+        ),
         iconTheme: const IconThemeData(color: AppColors.textPrimary),
       ),
       drawer: const AdminDrawer(),