feat(feedback): 命中/受击反馈支持固定位置与击中位置两种生成模式

DamageInfo 新增运行时字段 HitPoint：HitBox 结算时写入精确接触点
(ClosestPoint)，HurtBox.ReceiveDamage 以解析后命中点兜底盖戳，
陷阱/环境等直调路径同样可用。IFeedbackPlayer.PlayHit/PlayTakeHit
增加命中点参数，全链路（武器实例→PlayerCombat→HurtState→
EnemyFeedback）透传。各 Feedback 组件命中/受击槽位新增
FeedbackPositionMode（Fixed=反馈链编排的固定位置 /
HitPoint=传入命中点，启用位置选项的模块在该点生成），由编排
反馈链的开发者在 Inspector 按表现选择；武器命中默认 HitPoint
（火花贴点），角色级默认 Fixed（震屏/振动与位置无关）。

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Assets/_Game/Scripts/Player/States/HurtState.cs

@@ -10,14 +10,16 @@ namespace BaseGames.Player.States
     /// </summary>
     public class HurtState : PlayerStateBase
     {
-        private float _timer;
-        private bool  _ended;
+        private float   _timer;
+        private bool    _ended;
+        private Vector3 _hitPoint;
 
         public HurtState(PlayerController owner) : base(owner) { }
 
         public void Initialize(BaseGames.Combat.DamageInfo info)
         {
             // 由 PlayerController.TakeDamage 传入伤害信息
+            _hitPoint = info.HitPoint;
             if (info.KnockbackForce > 0.01f)
                 Move?.ApplyKnockback(info.KnockbackDirection, info.KnockbackForce);
         }
@@ -28,7 +30,7 @@ namespace BaseGames.Player.States
             _timer = Owner.AnimConfig?.HurtDuration ?? 0.4f;
             _ended = false;
             Stats?.BeginInvincibility();
-            Feedback.PlayTakeHit();
+            Feedback.PlayTakeHit(_hitPoint);
 
             if (AnimCfg?.Hurt != null)
             {