feat(e2e): 添加完整的E2E测试框架和测试用例

添加Playwright测试框架配置和基础页面对象
实现冒烟测试用例覆盖首页和联系页面核心功能
更新导航组件以支持滚动高亮功能
添加BackButton组件统一返回按钮行为
配置Woodpecker CI集成和测试报告生成

e2e/playwright.config.ts

@@ -0,0 +1,53 @@
+import { defineConfig, devices } from '@playwright/test';
+
+export default defineConfig({
+  testDir: './src/tests',
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 1 : undefined,
+  reporter: [
+    ['html', { open: 'never' }],
+    ['json', { outputFile: 'test-results/results.json' }],
+    ['junit', { outputFile: 'test-results/junit.xml' }],
+    ['line'],
+    ['list']
+  ],
+  timeout: 60000,
+  expect: {
+    timeout: 30000
+  },
+  use: {
+    baseURL: 'http://localhost:3001',
+    trace: 'retain-on-failure',
+    screenshot: 'only-on-failure',
+    video: 'retain-on-failure',
+    headless: true,
+    viewport: { width: 1280, height: 720 },
+    actionTimeout: 30000,
+    navigationTimeout: 60000
+  },
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['Desktop Chrome'] },
+    },
+    {
+      name: 'firefox',
+      use: { ...devices['Desktop Firefox'] },
+    },
+    {
+      name: 'webkit',
+      use: { ...devices['Desktop Safari'] },
+    },
+    {
+      name: 'Mobile Chrome',
+      use: { ...devices['Pixel 5'] },
+    },
+    {
+      name: 'Mobile Safari',
+      use: { ...devices['iPhone 12'] },
+    },
+  ],
+  webServer: undefined,
+});