删除死代码：MunitionEntity._hasExceededReleaseAltitude

src/CounterDrone.Core/Simulation/MunitionEntity.cs

@@ -50,8 +50,6 @@ namespace CounterDrone.Core.Simulation
         // 空基投放：继承载机速度
         private readonly float _carrierVelX, _carrierVelY, _carrierVelZ;
 
-        // 地基：标记是否已超过释放高度
-        private bool _hasExceededReleaseAltitude;
         // 发射点高于释放高度时，炮弹下降到达
         private bool _arrivesDescending;
         private bool _useTimeArrival;
@@ -122,7 +120,6 @@ namespace CounterDrone.Core.Simulation
                 if (_useTimeArrival ? _time >= FlightDuration :
                     ((y >= ReleaseAltitude && !_arrivesDescending) || (y <= ReleaseAltitude && _arrivesDescending)))
                 {
-                    _hasExceededReleaseAltitude = true;
                     float tPrev = _time - deltaTime;
                     var (px0, py0, pz0) = Kinematics.ParabolicPosition(
                         _startX, _startY, _startZ, LaunchAngle, Azimuth, MuzzleVelocity, tPrev);