Ryu — agent-pet demo

SF2 Ryu sprite-pack with semantic actions, hadouken projectile, real SHORYUKEN jump.

Pet demo the actual companion widget — hadouken, shoryuken, kicks 3D playground three.js scene — tap the floor to walk Ryu, throw fireballs Sprite editor pick frames, drag to position, layer multiple sprites, undo Rich action editor keyframed transforms, timeline scrubber, multi-track actions