e2e-testing

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

• Potentially malicious external URL detected (high risk: 0.70). The workflow references external GitHub Actions (uses: actions/checkout@v4, actions/setup-node@v4, actions/upload-artifact@v4) which are fetched from GitHub and executed at CI runtime, so they are runtime external dependencies that execute remote code.