test(qa): e2e 装配修正 + 集成/门禁测试与工具链重构

- e2e：修死选择器与蜜罐误命中、补断言、GA4/security-headers 用例诚实标注
  skip 边界；新增 assert-helpers/fixtures/hydrated/primary-nav/touch-targets
  等复用桩。
- 集成层：config/test/jest.integration.config.js + tests-integration/ 真库
  一次性 SQLite 用例，teardown 守卫开发库指纹。
- 门禁工具链：jest.setup 归位到根、scripts/accessibility 全站 axe 节点计数、
  check-brand-text-token/check-motion-constraints 机械守卫、stryker/lighthouse
  配置收敛。

e2e/footer-beian-verify.spec.ts

@@ -1,10 +1,9 @@
-import { test, expect } from '@playwright/test';
+import { test, expect } from './fixtures';
 
 test.describe('Footer ICP/Police BeiAn Visibility', { tag: '@regression' }, () => {
   test('desktop: ICP and police bei an should be visible', async ({ page }) => {
     await page.setViewportSize({ width: 1440, height: 900 });
-    await page.goto('/');
-    await page.waitForLoadState('networkidle');
+    await page.goto('/', { waitUntil: 'domcontentloaded' });
     
     await page.evaluate(() => window.scrollTo(0, document.body.scrollHeight));
     await page.waitForTimeout(500);
@@ -24,8 +23,7 @@ test.describe('Footer ICP/Police BeiAn Visibility', { tag: '@regression' }, () =
 
   test('mobile: ICP and police bei an should be visible above tab bar', async ({ page }) => {
     await page.setViewportSize({ width: 390, height: 844 });
-    await page.goto('/');
-    await page.waitForLoadState('networkidle');
+    await page.goto('/', { waitUntil: 'domcontentloaded' });
     
     await page.evaluate(() => window.scrollTo(0, document.body.scrollHeight));
     await page.waitForTimeout(500);