Hero artwork for the connect screen.

Drop two PNGs here and the plugin picks them up automatically — Admin::render_hero_art()
checks for both and falls back to a CSS placeholder until they exist, so a missing
file never renders as a broken image.

  hero-quiz.png             the quiz question card     ~1040x720 (shown at 520x360)
  hero-recommendations.png  the recommendations card   ~840x600  (shown at 420x300)

Both are decorative, so they carry an empty alt attribute. Export at 2x for retina,
transparent background, and keep each under ~150KB — they ship inside the plugin zip
and load on a wp-admin screen.
