ragusaitweb/.Jules/sentinel.md

2025-02-12 - Missing Test Cleanup

Vulnerability: Tests in src/pages/__tests__/Contact.test.tsx were failing with duplicate elements because cleanup() was not being called between tests. Learning: testing-library/react usually handles cleanup automatically, but in this environment/setup, explicit cleanup() and document.body.innerHTML = '' in afterEach is required to prevent DOM state leakage. Prevention: Always include explicit cleanup() in afterEach blocks when writing component tests in this repository.