wan2.2 Prompt: { "version": "wan2.2-snake-v2", "scene": "anaconda_swallows_bus_to_stomach", "key_sequences": [ { "id": "1", "action": "ambush", "description": "Anaconda (40m long, 3m wide) surges from roadside, matching bus speed (60mph)", "visuals": [ "dust cloud from sudden movement", "snake’s underside scrapes asphalt" ] }, { "id": "2", "action": "engulf", "steps": [ {"1": "jaws clamp over bus front (windshield wipers still runnin