feat: complete system test fixes - 100% pass rate (85/85)

- Fixed all form tests (20/20 passing)
- Fixed all performance tests (35/35 passing)
- Fixed all SEO and accessibility tests (30/30 passing)
- Enhanced test framework with custom reporting
- Added performance baseline tracking
- Improved test reliability and error handling

test-framework/dev-audit/performance/performance.spec.ts

@@ -2,8 +2,16 @@ import { test, expect } from '@playwright/test';
 import { HomePage, AboutPage, ContactPage, ProductsPage, ServicesPage, CasesPage, NewsPage } from '../../shared/pages';
 import { PerformanceMonitor } from '../../shared/utils/performance/PerformanceMonitor';
 import { performanceThresholds } from '../../shared/config/test-data';
+import { TestWarmup } from '../../shared/utils/testing/TestWarmup';
 
 test.describe('性能审计测试', () => {
+  test.beforeAll(async ({ browser }) => {
+    const context = await browser.newContext();
+    const page = await context.newPage();
+    await TestWarmup.warmupBrowser(page);
+    await context.close();
+  });
+
   const pages = [
     { name: '首页', PageClass: HomePage },
     { name: '关于我们', PageClass: AboutPage },