E2E Test Selection:
The PR contains only 2 changed files, both within the WhatsHappening feature:

1. useWhatsHappening.ts: A single-line change in mapTrendsToItems - removes the article-date-first logic (trend.articles[0]?.date ?? overview.generatedAt) and always uses overview.generatedAt for the date field. This is a minor display logic simplification.

2. useWhatsHappening.test.ts: Updates unit tests to match the new behavior - replaces two tests (article date and fallback) with a single test confirming generatedAt is always used.

Why no E2E tags are needed:

• The change is isolated to a single hook within the WhatsHappening/Trending feature
• It only affects how a date field is populated in trend card items (cosmetic display change)
• No E2E tests validate this specific date field behavior
• No shared components (navigation, modals, confirmations, controllers) are affected
• The WhatsHappening component is part of SmokeWalletPlatform's Trending tab, but this change is too minor and internal to warrant running the full SmokeWalletPlatform suite
• The unit tests in the PR adequately cover the behavioral change
• No user flows are broken or altered - users still see the same trend cards, just with a slightly different date source

Performance: No performance impact - this is a simple field assignment change with no rendering, data loading, or state management implications.

Performance Test Selection:
The change is a single-line simplification of date field assignment in a hook. No rendering performance, data loading, list rendering, or state management changes are involved. No performance tests are warranted.