refactor(mp): 迁移个人中心 12 个页面 — 统一组件库

线下活动、健康档案、报告列表、随访列表、透析记录、
透析处方、诊断列表、用药列表、家庭成员、添加家庭成员、
设置、知情同意共 12 个页面迁移：
- 最外层容器 → PageShell
- SCSS 删除 min-height/background 通用样式

apps/miniprogram/src/pages/pkg-profile/medication/index.scss

@@ -1,10 +1,8 @@
 @import '../../../styles/variables.scss';
 @import '../../../styles/mixins.scss';
 
+// PageShell 已接管：min-height, background, padding
 .medication-page {
-  min-height: 100vh;
-  background: $bg;
-  padding: 32px 24px;
   padding-bottom: 160px;
 }
 

apps/miniprogram/src/pages/pkg-profile/medication/index.tsx

@@ -12,6 +12,7 @@ import {
   type MedicationReminder,
 } from '../../../services/medication-reminder';
 import { useElderClass } from '../../../hooks/useElderClass';
+import PageShell from '@/components/ui/PageShell';
 import './index.scss';
 
 export default function MedicationReminder() {
@@ -100,17 +101,17 @@ export default function MedicationReminder() {
 
   if (loading) {
     return (
-      <View className={`medication-page ${modeClass}`}>
+      <PageShell className={modeClass}>
         <Text className='page-title'>用药提醒</Text>
         <View className='medication-loading'>
           <Text className='medication-loading-text'>加载中...</Text>
         </View>
-      </View>
+      </PageShell>
     );
   }
 
   return (
-    <View className={`medication-page ${modeClass}`}>
+    <PageShell className={modeClass}>
       <Text className='page-title'>用药提醒</Text>
 
       <View className='reminder-list'>
@@ -199,6 +200,6 @@ export default function MedicationReminder() {
           <Text className='add-text'>添加提醒</Text>
         </View>
       )}
-    </View>
+    </PageShell>
   );
 }