P3: ExplainerSection has no data-testid attributes #10
Description
R-010 — Testing
ExplainerSection component has no data-testid attributes.
Context: The ExplainerSection component and its child cards lack data-testid attributes, making it harder to target in integration or end-to-end tests.
Suggestion: Add data-testid attributes to the section container and each card element for reliable test selectors.
Severity: P3 — non-blocking
Source: Self-review on PR #7