fix(miniprogram): 首页体征数据加载时序 + 并发控制 + 权限修复

- ConcurrencyLimiter 12→8 预留长轮询通道，避免超微信 10 并发限制
- usePageData 添加 AbortController，页面隐藏/卸载自动取消请求
- useHomeData 添加 useEffect 监听 currentPatient 变化自动触发数据加载
- 医护人员首页跳转前不渲染 HomeDashboard，避免触发无用 API 请求
- auth.ts getPatients 正确提取分页响应 .data 数组
- health.ts getTodaySummary 从 Storage 回退读取 patient_id
- health store refreshToday 从 auth store 回退获取 currentPatient.id
- auth store restore() 状态变化时清理请求缓存，避免返回过期数据

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

@@ -314,14 +314,25 @@ export default function Index() {
   const modeClass = mode === 'elder' ? 'elder-mode' : '';
 
   // 医护人员访问患者首页时，自动跳转到医生端
+  // 不渲染 HomeDashboard，避免触发患者首页的 API 请求（并发叠加问题）
+  const shouldRedirect = user && isMedicalStaff();
+
   useDidShow(() => {
-    if (user && isMedicalStaff()) {
-      Taro.redirectTo({ url: '/pages/pkg-doctor-core/index' });
+    if (shouldRedirect) {
+      Taro.reLaunch({
+        url: '/pages/pkg-doctor-core/index',
+        fail: () => {
+          console.warn('跳转医生端失败，停留患者首页');
+        },
+      });
     }
   });
 
   if (!user) {
     return <GuestHome modeClass={modeClass} />;
   }
+  if (shouldRedirect) {
+    return <Loading />;
+  }
   return <HomeDashboard modeClass={modeClass} />;
 }

apps/miniprogram/src/pages/index/useHomeData.ts

@@ -1,4 +1,4 @@
-import { useState, useMemo, useRef } from 'react';
+import { useState, useMemo, useRef, useEffect } from 'react';
 import { useHealthStore } from '@/stores/health';
 import { useAuthStore } from '@/stores/auth';
 import { usePageData } from '@/hooks/usePageData';
@@ -53,6 +53,17 @@ export function useHomeData() {
     enabled: !!user,
   });
 
+  // currentPatient 从 null 变为有值时重新触发加载
+  // 解决 loadPatients 异步完成前 useDidShow 已触发 fetchData 并因 patientId 为空提前返回的问题
+  const prevPatientRef = useRef<string | null>(null);
+  useEffect(() => {
+    const pid = currentPatient?.id ?? null;
+    if (pid && pid !== prevPatientRef.current) {
+      prevPatientRef.current = pid;
+      trigger();
+    }
+  }, [currentPatient?.id, trigger]);
+
   const loadUnread = async () => {
     try {
       const res = await notificationService.getUnreadCount() as { data?: { count?: number } | number };