修复微信内嵌点位搜索导航

src/pages/index/index.vue

@@ -715,7 +715,11 @@ const syncTopTabToUrl = (tabId: GuideTopTab) => {
   if (typeof window === 'undefined') return
   if (!isIndexHashRoute()) return
 
-  const url = `#/pages/index/index?tab=${tabId}`
+  const currentHash = window.location.hash || ''
+  const queryStart = currentHash.indexOf('?')
+  const params = new URLSearchParams(queryStart >= 0 ? currentHash.slice(queryStart + 1) : '')
+  params.set('tab', tabId)
+  const url = `#/pages/index/index?${params.toString()}`
   if (window.location.hash !== url) {
     window.history.replaceState(window.history.state, '', url)
   }