fix(health): 数据完整性 + 代码规范修复 — FK约束/版本类型统一/软删除过滤

数据完整性:
- 新增 8 个 FK 约束 (follow_up_task→appointment, points_transaction→account/rule/order,
  points_order→product/patient, offline_event_registration→event/patient)
- critical_alert/critical_alert_response version 字段 i64→i32 统一
- vital_signs_daily_service 聚合查询添加 DeletedAt.is_null() 过滤

代码规范:
- 新增 api/upload.ts 封装文件上传，ArticleEditor 改用 service 层
- 新增 messages.updateSubscription，NotificationPreferences 改用 service 层
- 修复 erp-message SSE 测试编译错误 (移除 serde_urlencoded 依赖)

apps/web/src/pages/messages/NotificationPreferences.tsx

@@ -1,8 +1,8 @@
 import { useEffect, useState } from 'react';
 import { Form, Switch, TimePicker, Button, message } from 'antd';
 import { BellOutlined } from '@ant-design/icons';
-import client from '../../api/client';
 import { useThemeMode } from '../../hooks/useThemeMode';
+import { updateSubscription } from '../../api/messages';
 
 interface PreferencesData {
   dnd_enabled: boolean;
@@ -38,7 +38,7 @@ export default function NotificationPreferences() {
         }
       }
 
-      await client.put('/message-subscriptions', {
+      await updateSubscription({
         dnd_enabled: req.dnd_enabled,
         dnd_start: req.dnd_start,
         dnd_end: req.dnd_end,