fix(weixin-sdk): restore iOS JSSDK entry-URL signing for shop scan

Phone re-login + OAuth on iOS left SPA on a different path than the WebView entry URL, so scanQRCode failed until a full reopen. Sign with the document entry URL again and warm up after auth.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/h5-shop/src/pages/HomePage.tsx

@@ -4,7 +4,7 @@ import { Link, useNavigate, useSearchParams } from 'react-router-dom';
 
 import PullToRefresh from '@dukang/shared-ui/PullToRefresh';
 
-import { isScanPermissionWarmupError } from '@dukang/weixin-sdk';
+import { isIosDevice, isScanPermissionWarmupError } from '@dukang/weixin-sdk';
 
 import { useStoreSession } from '../contexts/StoreSessionContext';
 
@@ -28,6 +28,8 @@ import {
 
   clearPendingScanAfterAuth,
 
+  consumeScanWarmupAfterAuth,
+
   getPostAuthScanDelayMs,
 
   markPendingScanAfterAuth,
@@ -190,7 +192,8 @@ export default function HomePage() {
 
       try {
 
-        if (opts?.postAuthWarmup) {
+        // iOS / OAuth 回跳后须重新 wx.config（签名用入场 URL）
+        if (opts?.postAuthWarmup || isIosDevice()) {
 
           weixinSdk.reset();
 
@@ -308,7 +311,9 @@ export default function HomePage() {
 
       }
 
-      await runScan();
+      const needWarmup = consumeScanWarmupAfterAuth();
+
+      await runScan(needWarmup ? { postAuthWarmup: true } : undefined);
 
     } catch (e) {