修复嵌入小程序讲解列表返回导览首页

src/pages/explain/list.vue

@@ -122,7 +122,8 @@ const returnToGuideHome = () => {
     ? previousPage.options.tab[0]
     : previousPage?.options?.tab
   const canNavigateBackToGuideHome = (
-    previousRoute === 'pages/index/index'
+    !shouldUseHostNavigation.value
+    && previousRoute === 'pages/index/index'
     && (!previousTab || previousTab === 'guide')
   )
 

tests/unit/ExplainListNavigation.spec.ts

@@ -122,6 +122,25 @@ describe('讲解展厅列表返回', () => {
     wrapper.unmount()
   })
 
+  it('微信嵌入态即使前置页是导览首页也不调用宿主返回', async () => {
+    hostEnvironmentMocks.embeddedInWechatMiniProgram = true
+    window.location.hash = '#/pages/explain/list?embedded=wechat-mini-program'
+    window.history.replaceState({}, '', window.location.href)
+    vi.stubGlobal('getCurrentPages', vi.fn(() => [
+      { route: 'pages/index/index', options: { tab: 'guide' } },
+      { route: 'pages/explain/list', options: {} }
+    ]))
+    const wrapper = mountExplainList()
+
+    await wrapper.get('[data-testid="explain-list-back"]').trigger('click')
+
+    expect(uni.navigateBack).not.toHaveBeenCalled()
+    expect(uni.reLaunch).toHaveBeenCalledWith(expect.objectContaining({
+      url: '/pages/index/index?tab=guide&embedded=wechat-mini-program'
+    }))
+    wrapper.unmount()
+  })
+
   it('上一页不是首页时使用 reLaunch，避免回到不相关页面', async () => {
     vi.stubGlobal('getCurrentPages', vi.fn(() => [
       { route: 'pages/search/index', options: {} },