Variable DOUBLE_KICK_ANIMATIONConst

Double Kick - 이중차기

Two rapid kicks from same leg. First low, second high to confuse defense.

Phases (준비, 실행, 회수, 복귀):

1. First kick chamber (첫 차기 준비): 120ms
2. First kick extend (첫 차기 실행): 145ms (0.66 × 220ms, shortened)
3. Second kick chamber (둘째 차기 준비): 80ms (using peak for quick transition)
4. Second kick extend (둘째 차기 실행): 145ms (0.66 × 220ms, shortened)
5. Second kick peak (둘째 차기 정점): 80ms
6. Recovery (복귀): 380ms

Total duration: 950ms (COMBO_HEAVY technique) Sum: 120 + 145 + 80 + 145 + 80 + 380 = 950ms ✓