Make DB lock validation CI friendly

tests/e2e/blog-validation.spec.ts

@@ -1,7 +1,8 @@
 import { expect, test } from '@playwright/test';
+import { loginThroughAdminUi } from './helpers/admin-auth';
 import { captureEvidence } from './helpers/evidence';
 
-const baseUrl = 'https://www.taxbaik.com/taxbaik';
+const baseUrl = (process.env.E2E_BASE_URL ?? 'https://www.taxbaik.com/taxbaik').replace(/\/$/, '');
 const username = 'admin';
 const password = 'Admin123!@#456';
 
@@ -22,14 +23,7 @@ test('Blog Management Full Flow - Real Domain Validation', async ({ page }) => {
 
   // 로그인 폼 입력
   console.log('\n=== 2단계: 로그인 수행 ===');
-  await page.fill('input[placeholder*="사용자"]', username);
-  await page.fill('input[placeholder*="비밀"]', password);
-
-  const loginButton = await page.locator('button:has-text("로그인")');
-  console.log('✓ 로그인 버튼 찾음:', await loginButton.isVisible());
-
-  await loginButton.click();
-  await page.waitForNavigation({ waitUntil: 'networkidle', timeout: 15000 });
+  await loginThroughAdminUi(page, baseUrl, username, password);
 
   console.log('✓ 로그인 완료, URL:', page.url());