## Summary
- Replaces static timeout-based wait with toPass() retry logic for
ArrowUp navigation wrap test
- Makes the test more resilient to timing variations with the
BeautifulMentionsPlugin
- Uses aria-selected attribute for more reliable selection detection

## Test plan
- Run `npm run e2e -- chat_history.spec.ts` to verify the test passes
- The test should be more stable and less prone to flakiness

🤖 Generated with [Claude Code](https://claude.com/claude-code)
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Co-authored-by: Will Chen <willchen90@gmail.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>