fix(portal): 微官网预览页新增极简返回按钮与预览态徽标，修复自定义导航栏无法回退的问题

backend/test/mpuniapp/owner-lead-detail.test.ts

@@ -389,7 +389,7 @@ describe('OmniCard AI 名片主潜客详情业务逻辑 (useLeadDetail.uts)', ()
     });
   });
 
-  describe('5. 国际销售触达与 AI 赋能函数', () => {
+  describe('5. 国际销售触达与智能话术函数', () => {
     it('5.1 formatWhatsAppUrl 清洗国际号码并生成 wa.me 链接', () => {
       const { formatWhatsAppUrl } = loadUseLeadDetail();
 

backend/test/mpuniapp/portal.test.ts

@@ -332,4 +332,72 @@ describe('OmniCard AI 用户端微官网 Bento 首页与 Hero 业务逻辑测试
       expect(visible.map((b: any) => b.type)).toEqual(['case', 'article', 'social']);
     });
   });
+
+  describe('7. 顶栏返回入口与智能导航 (executePortalGoBack)', () => {
+    it('7.1 当页面栈深度大于 1 时调用 uni.navigateBack', () => {
+      // @ts-ignore
+      const { executePortalGoBack } = require('../../../mpuniapp/pages/portal/usePortal.uts');
+      let navigatedBack = false;
+      let switchedTabUrl = '';
+
+      (global as any).getCurrentPages = () => [{}, {}];
+      (global as any).uni = {
+        ...(global as any).uni,
+        navigateBack: () => {
+          navigatedBack = true;
+        },
+        switchTab: (p: { url: string }) => {
+          switchedTabUrl = p.url;
+        },
+      };
+
+      const result = executePortalGoBack(true);
+      expect(navigatedBack).toBe(true);
+      expect(result.action).toBe('navigateBack');
+      expect(switchedTabUrl).toBe('');
+    });
+
+    it('7.2 当页面栈为 1 且为名片主 (isOwner) 时安全跳转至名片管理首页', () => {
+      // @ts-ignore
+      const { executePortalGoBack } = require('../../../mpuniapp/pages/portal/usePortal.uts');
+      let navigatedBack = false;
+      let switchedTabUrl = '';
+
+      (global as any).getCurrentPages = () => [{}];
+      (global as any).uni = {
+        ...(global as any).uni,
+        navigateBack: () => {
+          navigatedBack = true;
+        },
+        switchTab: (p: { url: string }) => {
+          switchedTabUrl = p.url;
+        },
+      };
+
+      const result = executePortalGoBack(true);
+      expect(navigatedBack).toBe(false);
+      expect(result.action).toBe('switchTab');
+      expect(result.targetUrl).toBe('/pages/owner/card/index');
+      expect(switchedTabUrl).toBe('/pages/owner/card/index');
+    });
+
+    it('7.3 当页面栈为 1 且为访客时安全跳转至大厅', () => {
+      // @ts-ignore
+      const { executePortalGoBack } = require('../../../mpuniapp/pages/portal/usePortal.uts');
+      let switchedTabUrl = '';
+
+      (global as any).getCurrentPages = () => [{}];
+      (global as any).uni = {
+        ...(global as any).uni,
+        switchTab: (p: { url: string }) => {
+          switchedTabUrl = p.url;
+        },
+      };
+
+      const result = executePortalGoBack(false);
+      expect(result.targetUrl).toBe('/pages/owner/hall/index');
+      expect(switchedTabUrl).toBe('/pages/owner/hall/index');
+    });
+  });
 });
+