docs: add local E2E test workflow before CI push

- Document running playwright tests locally against moicen before pushing
- Helps avoid wasted CI cycles

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

CLAUDE.md

@@ -1,5 +1,24 @@
 # huike-e2e-moicen 项目指南
 
+## 本地执行 E2E 测试（先本地，再 CI）
+
+推送前先在本机对 moicen 测试服执行 Playwright 测试，避免反复推送等 CI 结果：
+
+```bash
+cd /Users/weli/works/huiwing-migration/huike-e2e-moicen
+
+# 执行指定测试文件
+npx playwright test tests/clazz-ui.spec.ts --reporter=list
+
+# 执行全部测试
+npx playwright test --reporter=list
+
+# 带 UI 调试模式
+npx playwright test --ui
+```
+
+测试通过后再 commit & push 触发远程 CI。
+
 ## CI 工作流
 
 ### 等待 CI 完成