Variable IDLE_STANCE_ANIMATIONConst

Idle stance animation (대기 자세)

Fighting stance with slight weight shift and breathing motion.

Animation phases:

1. Center (0.0s): Neutral fighting stance
2. Weight left (0.8s): Shift weight to left leg
3. Center (1.6s): Return to neutral
4. Weight right (2.4s): Shift weight to right leg
5. Center (3.0s): Return to neutral (loops)

Duration: 3000ms (looping)