test(e2e): 改进 Playwright 测试框架和 E2E 测试

- 更新 Playwright 配置，添加认证状态管理和 setup 项目
- 优化 E2E 测试用例，简化测试流程
- 添加 auth-debug.spec.ts 用于调试认证问题
- 添加 playwright/.auth/user.json 认证状态文件

e2e-tests/journeys/user-permission-boundary.spec.ts

@@ -27,7 +27,8 @@ test.describe('用户权限边界验证', () => {
   test('普通用户登录后可以访问页面但API操作受限', async ({ page }) => {
     await test.step('管理员登出', async () => {
       await page.goto('/dashboard');
-      await page.waitForLoadState('networkidle');
+      await page.waitForLoadState('domcontentloaded');
+      await page.waitForTimeout(1000);
 
       const avatarButton = page.locator('.el-avatar').first();
       await avatarButton.click({ timeout: 10000 });
@@ -39,7 +40,8 @@ test.describe('用户权限边界验证', () => {
 
     await test.step('普通用户登录', async () => {
       await page.goto('/login');
-      await page.waitForLoadState('networkidle');
+      await page.waitForLoadState('domcontentloaded');
+      await page.waitForTimeout(1000);
 
       const usernameInput = page.locator('input[placeholder*="用户名"]');
       const passwordInput = page.locator('input[placeholder*="密码"]');
@@ -78,7 +80,8 @@ test.describe('用户权限边界验证', () => {
   test('权限不足时API返回403错误', async ({ page }) => {
     await test.step('管理员登出', async () => {
       await page.goto('/dashboard');
-      await page.waitForLoadState('networkidle');
+      await page.waitForLoadState('domcontentloaded');
+      await page.waitForTimeout(1000);
 
       const avatarButton = page.locator('.el-avatar').first();
       await avatarButton.click({ timeout: 10000 });