feat(miniprogram): 微信订阅消息引导 + 个人中心消息 badge 占位

- 新增 wechat-templates.ts 集中管理模板 ID
- 预约成功后引导用户订阅预约提醒
- 随访记录提交后引导订阅随访提醒
- 个人中心新增消息中心入口 + 未读数 badge（MVP 占位 unreadCount: 0）

apps/miniprogram/src/pages/appointment/create/index.tsx

@@ -3,6 +3,7 @@ import { View, Text, Input } from '@tarojs/components';
 import Taro from '@tarojs/taro';
 import { listDoctors, createAppointment, calendarView } from '../../../services/appointment';
 import { useAuthStore } from '../../../stores/auth';
+import { TEMPLATE_IDS } from '@/services/wechat-templates';
 import StepIndicator from '../../../components/StepIndicator';
 import WeekCalendar from '../../../components/WeekCalendar';
 import './index.scss';
@@ -111,6 +112,13 @@ export default function AppointmentCreate() {
         reason: reason.trim() || undefined,
       });
       Taro.showToast({ title: '预约成功', icon: 'success' });
+      // 订阅消息引导
+      const tmplId = TEMPLATE_IDS.APPOINTMENT_REMINDER;
+      if (tmplId) {
+        try {
+          await Taro.requestSubscribeMessage({ tmplIds: [tmplId] });
+        } catch { /* 用户拒绝 */ }
+      }
       setTimeout(() => Taro.navigateBack(), 1500);
     } catch {
       Taro.showToast({ title: '预约失败', icon: 'none' });

apps/miniprogram/src/pages/followup/detail/index.tsx

@@ -3,6 +3,7 @@ import { View, Text, Textarea } from '@tarojs/components';
 import Taro, { useRouter } from '@tarojs/taro';
 import { getTaskDetail, submitRecord } from '../../../services/followup';
 import type { FollowUpTask } from '../../../services/followup';
+import { TEMPLATE_IDS } from '@/services/wechat-templates';
 import Loading from '../../../components/Loading';
 import ErrorState from '../../../components/ErrorState';
 import './index.scss';
@@ -41,6 +42,10 @@ export default function FollowUpDetail() {
         content: { text: content.trim() },
       });
       Taro.showToast({ title: '提交成功', icon: 'success' });
+      const tmplId = TEMPLATE_IDS.FOLLOWUP_REMINDER;
+      if (tmplId) {
+        try { await Taro.requestSubscribeMessage({ tmplIds: [tmplId] }); } catch { /* 用户拒绝 */ }
+      }
       setContent('');
     } catch {
       Taro.showToast({ title: '提交失败', icon: 'none' });

apps/miniprogram/src/pages/profile/index.scss

@@ -72,6 +72,24 @@
   color: $tx3;
 }
 
+.menu-badge {
+  background: $dan;
+  border-radius: 20px;
+  min-width: 36px;
+  height: 36px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 0 10px;
+  margin-right: 12px;
+}
+
+.menu-badge-text {
+  font-size: 20px;
+  color: white;
+  font-weight: bold;
+}
+
 .profile-logout {
   margin: 24px;
   background: $card;

apps/miniprogram/src/pages/profile/index.tsx

@@ -4,6 +4,7 @@ import { useAuthStore } from '../../stores/auth';
 import './index.scss';
 
 const MENU_ITEMS = [
+  { label: '消息中心', icon: '🔔', path: '/pages/profile/messages/index', badge: true },
   { label: '就诊人管理', icon: '👥', path: '/pages/profile/family/index' },
   { label: '我的报告', icon: '📋', path: '/pages/profile/reports/index' },
   { label: '我的随访', icon: '💬', path: '/pages/profile/followups/index' },
@@ -13,6 +14,7 @@ const MENU_ITEMS = [
 
 export default function Profile() {
   const { user, restore: restoreAuth, logout } = useAuthStore();
+  const unreadCount = 0; // MVP 占位，后续对接 erp-message API
 
   useDidShow(() => {
     restoreAuth();
@@ -54,6 +56,11 @@ export default function Profile() {
           >
             <Text className='menu-icon'>{item.icon}</Text>
             <Text className='menu-label'>{item.label}</Text>
+            {item.badge && unreadCount > 0 && (
+              <View className='menu-badge'>
+                <Text className='menu-badge-text'>{unreadCount > 99 ? '99+' : unreadCount}</Text>
+              </View>
+            )}
             <Text className='menu-arrow'>›</Text>
           </View>
         ))}

apps/miniprogram/src/services/wechat-templates.ts

@@ -0,0 +1,5 @@
+export const TEMPLATE_IDS = {
+  APPOINTMENT_REMINDER: '',
+  FOLLOWUP_REMINDER: '',
+  REPORT_NOTIFICATION: '',
+};