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/lib/shop-scan-auth.ts

@@ -3,6 +3,9 @@ import { isIosDevice } from '@dukang/weixin-sdk';
 /** 扫码前发起 OAuth 时标记，回跳后在首页续扫 */
 export const SHOP_PENDING_SCAN_KEY = 'shop_pending_scan';
 
+/** 短信登录后绑定微信等 OAuth 回跳：下次手动扫码加长预热（不自动打开相机） */
+export const SHOP_SCAN_WARMUP_KEY = 'shop_scan_warmup';
+
 export function markPendingScanAfterAuth(): void {
   try {
     sessionStorage.setItem(SHOP_PENDING_SCAN_KEY, '1');
@@ -27,6 +30,25 @@ export function clearPendingScanAfterAuth(): void {
   }
 }
 
+/** OAuth（含短信登录后绑微信）回跳后，标记下一次扫码需要加长预热 */
+export function markScanWarmupAfterAuth(): void {
+  try {
+    sessionStorage.setItem(SHOP_SCAN_WARMUP_KEY, '1');
+  } catch {
+    /* ignore */
+  }
+}
+
+export function consumeScanWarmupAfterAuth(): boolean {
+  try {
+    if (sessionStorage.getItem(SHOP_SCAN_WARMUP_KEY) !== '1') return false;
+    sessionStorage.removeItem(SHOP_SCAN_WARMUP_KEY);
+    return true;
+  } catch {
+    return false;
+  }
+}
+
 /** OAuth 回跳后延迟再调 scanQRCode（iOS JSSDK 离线校验更慢） */
 export function getPostAuthScanDelayMs(): number {
   return isIosDevice() ? 1200 : 600;

apps/h5-shop/src/lib/wechat-auth.ts

@@ -2,6 +2,7 @@ import type { ClientRuntimeConfig, WechatLoginResult } from '@dukang/shared-type
 import { isWxAuthorizeEnabled } from '@dukang/shared-types';
 import { WECHAT_INAPP_REQUIRED_MSG } from '@dukang/weixin-sdk';
 import { isWechatEnv, weixinSdk } from './weixin';
+import { markScanWarmupAfterAuth } from './shop-scan-auth';
 import { request, saveWechatSession, type ShopSessionPayload } from './api';
 
 export type ShopAccountProfile = {
@@ -162,6 +163,7 @@ export async function loginShopWithWechat(): Promise<ShopSessionPayload | null |
   if (!isWechatEnv()) {
     throw new Error(WECHAT_INAPP_REQUIRED_MSG);
   }
+  markScanWarmupAfterAuth();
   const result = await weixinSdk.login();
   if (result) return handleShopWechatLoginResult(result);
 }
@@ -171,6 +173,8 @@ export async function bindShopWechatAfterSmsLogin(): Promise<void> {
   const config = await fetchClientConfig();
   if (!isWxAuthorizeEnabled(config)) return;
   if (!isWechatEnv()) return;
+  // OAuth 整页回跳后 iOS 需用入场 URL 重配 JSSDK；标记下次扫码加长预热
+  markScanWarmupAfterAuth();
   await weixinSdk.login();
 }
 
@@ -180,5 +184,6 @@ export async function authorizeShopWechat(): Promise<WechatLoginResult | void> {
   if (!isWechatEnv()) {
     throw new Error(WECHAT_INAPP_REQUIRED_MSG);
   }
+  markScanWarmupAfterAuth();
   return weixinSdk.login();
 }

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) {