修复讲解详情返回对象列表

tests/unit/ExplainGuideStopListNavigation.spec.ts

@@ -136,6 +136,7 @@ describe('讲解对象列表返回', () => {
     expect(params.get('hallName')).toBe('恐龙厅')
     expect(params.get('targetType')).toBe('STOP')
     expect(params.get('targetId')).toBe('target-1')
+    expect(params.get('returnToGuideStopList')).toBe('1')
     wrapper.unmount()
   })
 
@@ -192,6 +193,25 @@ describe('讲解对象列表返回', () => {
     wrapper.unmount()
   })
 
+  it('从展厅列表进入时，即使 H5 页面栈缺失也保留内部返回路径', async () => {
+    hostEnvironmentMocks.embeddedInWechatMiniProgram = true
+    miniProgramReturnMocks.returnToWechatMiniProgram.mockResolvedValue({ status: 'returned' })
+    const wrapper = mountGuideStopList()
+    testState.onLoadHandler?.({ hallId: 'hall-1', hallName: '恐龙厅', returnToHallList: '1' })
+    await flushPromises()
+
+    await wrapper.get('[data-testid="detail-click"]').trigger('click')
+    const detailUrl = vi.mocked(uni.navigateTo).mock.calls[0]?.[0]?.url || ''
+    expect(new URLSearchParams(detailUrl.split('?')[1]).get('returnToHallList')).toBe('1')
+
+    await wrapper.get('[data-testid="list-back"]').trigger('click')
+    await flushPromises()
+
+    expect(uni.reLaunch).toHaveBeenCalledWith({ url: '/pages/explain/list' })
+    expect(miniProgramReturnMocks.returnToWechatMiniProgram).not.toHaveBeenCalled()
+    wrapper.unmount()
+  })
+
   it('页面栈返回失败时回退至独立展厅列表', async () => {
     vi.stubGlobal('getCurrentPages', vi.fn(() => [
       { route: 'pages/explain/list', options: {} },