fix: resolve ES modules compatibility in E2E test files

- Replace __dirname with import.meta.url pattern for ES modules compatibility
- Add fileURLToPath imports to all E2E test files
- Fix duplicate require statements in setup-verification.spec.ts
- Update playwright.config.ts to use relative path instead of __dirname

This fixes the 'ReferenceError: __dirname is not defined in ES module scope' error
when running Playwright tests in the ES modules environment.

frontend/package.json

@@ -15,6 +15,9 @@
     "test:e2e:ci": "playwright test --reporter=dot,html"
   },
   "dependencies": {
+    "@radix-ui/react-checkbox": "^1.3.3",
+    "@radix-ui/react-dialog": "^1.1.15",
+    "@radix-ui/react-tabs": "^1.1.13",
     "@tailwindcss/postcss": "^4.2.2",
     "@tanstack/react-query": "^5.96.2",
     "axios": "^1.14.0",