修复展厅列表嵌入返回入口

tests/unit/ExplainHallSelect.spec.ts

@@ -1,14 +1,46 @@
 // @vitest-environment happy-dom
 
 import { mount } from '@vue/test-utils'
-import { describe, expect, it, vi } from 'vitest'
+import { afterEach, describe, expect, it, vi } from 'vitest'
 import ExplainHallSelect from '@/components/explain/ExplainHallSelect.vue'
 
-vi.mock('@/utils/hostEnvironment', () => ({
-  isEmbeddedInWechatMiniProgram: () => false
+const hostEnvironmentMocks = vi.hoisted(() => ({
+  embeddedInWechatMiniProgram: false
 }))
 
+vi.mock('@/utils/hostEnvironment', () => ({
+  isEmbeddedInWechatMiniProgram: () => hostEnvironmentMocks.embeddedInWechatMiniProgram
+}))
+
+afterEach(() => {
+  hostEnvironmentMocks.embeddedInWechatMiniProgram = false
+})
+
 describe('讲解展厅选择列表', () => {
+  it('微信嵌入态独立页面可强制显示 H5 返回入口，且不使用宿主导航布局', async () => {
+    hostEnvironmentMocks.embeddedInWechatMiniProgram = true
+    const wrapper = mount(ExplainHallSelect, {
+      props: {
+        forceInternalHeader: true
+      }
+    })
+
+    expect(wrapper.findAll('.explain-page-header')).toHaveLength(1)
+    expect(wrapper.findAll('.header-back')).toHaveLength(1)
+    expect(wrapper.classes()).not.toContain('host-navigation')
+
+    await wrapper.get('.header-back').trigger('tap')
+    expect(wrapper.emitted('back')).toEqual([[]])
+  })
+
+  it('微信嵌入态未强制时保留宿主导航布局，保护首页讲解 Tab', () => {
+    hostEnvironmentMocks.embeddedInWechatMiniProgram = true
+    const wrapper = mount(ExplainHallSelect)
+
+    expect(wrapper.find('.explain-page-header').exists()).toBe(false)
+    expect(wrapper.classes()).toContain('host-navigation')
+  })
+
   it('展厅卡片只显示讲解对象数量，不暴露业务单元契约', async () => {
     const wrapper = mount(ExplainHallSelect, {
       props: {

tests/unit/ExplainListNavigation.spec.ts

@@ -42,6 +42,9 @@ const GuidePageFrameStub = defineComponent({
 
 const ExplainHallSelectStub = defineComponent({
   name: 'ExplainHallSelect',
+  props: {
+    forceInternalHeader: Boolean
+  },
   emits: ['back'],
   template: '<button data-testid="explain-list-back" @click="$emit(\'back\')">返回</button>'
 })
@@ -103,6 +106,22 @@ describe('讲解展厅列表返回', () => {
     wrapper.unmount()
   })
 
+  it('独立页在微信嵌入态强制提供 H5 返回，并保留宿主识别参数', async () => {
+    hostEnvironmentMocks.embeddedInWechatMiniProgram = true
+    window.location.hash = '#/pages/explain/list?embedded=wechat-mini-program&weapp=1'
+    window.history.replaceState({}, '', window.location.href)
+    const wrapper = mountExplainList()
+
+    expect(wrapper.getComponent(ExplainHallSelectStub).props('forceInternalHeader')).toBe(true)
+    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&weapp=1'
+    }))
+    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: {} },