test: add E2E test for Extractor workflow using Playwright

- Create tests/e2e/extractor-workflow.test.ts with full workflow tests
- Add playwright.config.ts for E2E test configuration
- Add npm scripts: test:e2e, test:e2e:ui, test:e2e:report
- Update vitest.config.ts to exclude E2E tests

playwright.config.ts

@@ -0,0 +1,23 @@
+import { defineConfig } from '@playwright/test'
+
+export default defineConfig({
+  testDir: './tests/e2e',
+  timeout: 120000,
+  fullyParallel: false,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: 1,
+  reporter: 'html',
+  use: {
+    trace: 'on-first-retry',
+    screenshot: 'only-on-failure'
+  },
+
+  // Test configuration for Electron
+  projects: [
+    {
+      name: 'electron',
+      testMatch: '**/*.test.ts'
+    }
+  ]
+})