fix: 修复E2E测试为测试本地代码而非生产环境

问题根本原因:
- E2E测试访问生产环境URL (https://novalon.cn)
- 应该测试代码库中的代码，而非生产环境
- CI环境需要启动本地服务器进行测试

修复方案:
- 更新playwright.config.tiered.ts配置
  - baseURL改为 http://localhost:3000
  - 添加webServer配置，自动启动本地服务器
- 更新CI配置
  - 添加BASE_URL环境变量
  - 先构建项目（npm run build）
  - 然后运行E2E测试

验证:
- E2E测试将测试本地构建的代码
- 不依赖生产环境

Ralph Loop #8 完成

.woodpecker.yml

@@ -147,9 +147,13 @@ steps:
     environment:
       NODE_ENV: test
       CI: true
+      BASE_URL: http://localhost:3000
     commands:
-      - echo "E2E tests temporarily disabled - requires production environment access"
-      - echo "Skipping e2e-standard step to allow pipeline to pass"
+      - npm ci
+      - npm run build
+      - cd e2e && npm ci
+      - cd e2e && npx playwright install chromium --with-deps
+      - cd e2e && npm run test:standard
     when:
       event:
         - push

e2e/playwright.config.tiered.ts

@@ -35,7 +35,7 @@ export default defineConfig({
     ['list']
   ],
   use: {
-    baseURL: process.env.BASE_URL || 'https://novalon.cn',
+    baseURL: process.env.BASE_URL || 'http://localhost:3000',
     trace: 'on-first-retry',
     screenshot: 'only-on-failure',
     video: 'retain-on-failure',
@@ -43,6 +43,12 @@ export default defineConfig({
       args: ['--disable-dev-shm-usage', '--no-sandbox']
     }
   },
+  webServer: process.env.CI ? {
+    command: 'npm run start',
+    port: 3000,
+    timeout: 120000,
+    reuseExistingServer: false,
+  } : undefined,
   projects: [
     {
       name: 'chromium',