Function createGanStance

createGanStance(): SkeletalAnimation
☶ Gan Mountain Stance - 간 산 자세

Defensive stance (방어서기) from Hapkido with immovable position for defensive mastery.

Characteristics:
- 120° both knees (moderate bend)
- 40/60 weight distribution (slightly back)
- 1.0x shoulder width (standard)
- Medium-high hip height
Returns SkeletalAnimation
Korean
간산자세
- Defined in systems/animation/catalogs/StanceAnimations.ts:1693