Animated voxel-art flying turtle island with whale and lighthouse

GOAL: Create a single self-contained HTML file using Three.js that renders a beautiful animated voxel-art 3D scene. MOTION: A floating island rests on the shell of a giant sea turtle that slowly swims through the clouds in a golden-hour sky. On the island: a red-and-white striped lighthouse on a hill with a glowing lantern and a rotating light beam, a keeper's cottage with a smoking chimney, autumn trees (orange, gold, red) and dark pines, a pond with a rowboat, a stream that runs down the shell and spills off as a waterfall, flowers, rocks, pumpkins and lamp posts along a path. The turtle has a patterned shell with scutes, a scaly head and flippers that paddle slowly; the island gently bobs with each stroke. A huge voxel humpback whale with glowing spots rises from the clouds below and swims in a spiral around the island, leaving a trail of sparkles. Seagulls circle the lighthouse. Add soft shadows, voxel ambient occlusion, drifting voxel clouds, falling leaves, a gradient sky and a slow cinematic camera orbit. Make it as detailed and polished as possible.