feat: Implement DownDash ability and related systems

- Added DownDash ability with cooldown and speed configuration.
- Introduced DownDashState to handle down dashing mechanics, including gravity manipulation and animation playback.
- Updated PlayerMovement to support DownDash functionality.
- Enhanced PlayerStats to manage spring charge consumption and healing.
- Modified PlayerCombat and WeaponHitBoxInstance to support new hit confirmation events.
- Updated AbilityType to include new form types for character abilities.
- Improved Gizmos for better visualization of enemy detection and attack ranges.
- Added feedback systems for form switching in PlayerFeedback and IFeedbackPlayer.
- Refactored combat and movement states to accommodate new abilities and ensure smooth transitions.

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

@@ -14,11 +14,11 @@ namespace BaseGames.Player.States
 
         public override void OnStateEnter()
         {
-            // 消耗灵泉充能并治疗（PlayerStats.UseSpring 内部回复 HP）
-            bool used = Stats?.UseSpring() ?? false;
+            // 前摇开始时只扣除充能，不立即回血；回血在前摇结束后的 OnSpringEnd 中执行。
+            // 若前摇被打断（受伤 → HurtState），OnStateExit 被调用，充能已扣除但 OnSpringEnd 不会执行，回血失败。
+            bool used = Stats?.ConsumeSpringCharge() ?? false;
             if (!used)
             {
-                // 无充能时立即退出
                 Owner.TransitionTo(Owner.GetState<IdleState>());
                 return;
             }
@@ -37,7 +37,7 @@ namespace BaseGames.Player.States
                 }
             }
 
-            // 无动画则直接结束
+            // 无动画配置则直接结束（视为前摇瞬间完成）
             OnSpringEnd();
         }
 
@@ -49,6 +49,8 @@ namespace BaseGames.Player.States
 
         private void OnSpringEnd()
         {
+            // 前摇正常结束 → 执行回血
+            Stats?.ApplySpringHeal();
             Owner.TransitionTo(Owner.GetState<IdleState>());
         }
     }