fix(mp): setTimeout 无清理修复 — useSafeTimeout hook + 10 页面接入

新增 useSafeTimeout hook，页面隐藏时自动清理所有定时器。
10 个页面接入：daily-monitoring、exchange、family-add、
health/input、prescription detail/create、dialysis detail/create、
appointment detail/create。所有 fire-and-forget setTimeout 替换为
safeSetTimeout，避免页面切走后定时器回调在错误上下文执行。

apps/miniprogram/src/pages/pkg-health/input/index.tsx

@@ -8,6 +8,7 @@ import { useAuthStore } from '../../../stores/auth';
 import { useHealthStore } from '@/stores/health';
 import { usePointsStore } from '@/stores/points';
 import { clearRequestCache } from '@/services/request';
+import { useSafeTimeout } from '@/hooks/useSafeTimeout';
 import { trackEvent } from '@/services/analytics';
 import { useElderClass } from '../../../hooks/useElderClass';
 import Loading from '../../../components/Loading';
@@ -61,6 +62,7 @@ export default function HealthInput() {
   const [diastolic, setDiastolic] = useState('');
   const [note, setNote] = useState('');
   const [submitting, setSubmitting] = useState(false);
+  const { safeSetTimeout } = useSafeTimeout();
   const [loadingThresholds, setLoadingThresholds] = useState(true);
   const currentPatient = useAuthStore((s) => s.currentPatient);
   const clearCache = useHealthStore((s) => s.clearCache);
@@ -155,7 +157,7 @@ export default function HealthInput() {
       usePointsStore.getState().invalidate();
       Taro.showToast({ title: '录入成功', icon: 'success' });
       trackEvent('health_data_input', { type: currentIndicator });
-      setTimeout(() => Taro.navigateBack(), 1000);
+      safeSetTimeout(() => Taro.navigateBack(), 1000);
     } catch (e: unknown) {
       const msg = e instanceof Error ? e.message : '录入失败';
       Taro.showToast({ title: msg, icon: 'none' });