ProductShowcase crashed with ReferenceError because useEffect was
used for the card rotation interval but not imported.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- Hero auto-rotates story backdrops every 5 seconds with 500ms fade transitions
- ProductShowcase cards rotate with mint ring highlight on the active card
- Inactive cards fade to 60% opacity on mobile, full opacity on desktop
- New components: StoryBackdrop, StoryOnboarding, CountUp, lib/stories
- Manual Another-story control still works
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
