Auto-flying knight, crystal zones, pirate/boss combat, shop upgrades, falling/golden asteroids, particle juice, droid evolution, and a supernova prestige cutscene, per the design spec. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01D5SuZW1XGCkahPX7cHMoRP