修复内容：

PlayerMovement：新增 _facingLocked 字段 + LockFacing(bool) 方法；UpdateFacing() 锁定时直接返回
WallSlideState：OnStateEnter 调用 LockFacing(true) + FlipFacing(_wallDir)；OnStateExit 调用 LockFacing(false) 解锁
WallJumpState：OnStateEnter 保险性再调一次 LockFacing(false)；WallJumpAway/Toward 同步写入 _inputVelocityX，确保解锁后 UpdateFacing 朝向正确（背墙跳 = 离墙方向，对墙跳 = 朝墙方向）

Assets/_Game/Scripts/Player/PlayerMovement.cs

@@ -43,6 +43,7 @@ namespace BaseGames.Player
         private bool        _isWallRight;
         private bool        _onOneWayPlatform;
         private int         _facingDirection = 1;
+        private bool        _facingLocked;          // 为 true 时 UpdateFacing() 不覆盖朝向
         private bool        _cancelWindowOpen;
         private SurfaceType _currentSurface = SurfaceType.Ground;
         private readonly Collider2D[] _groundBuffer    = new Collider2D[4];
@@ -213,6 +214,7 @@ namespace BaseGames.Player
         // ── 朝向 ──────────────────────────────────────────────────────────────
         public void UpdateFacing()
         {
+            if (_facingLocked) return;
             // 读取玩家输入速度（不含平台分量），避免平台横向运动驱动朝向翻转。
             float vx = _inputVelocityX;
             if (Mathf.Abs(vx) < 0.1f) return;
@@ -247,6 +249,13 @@ namespace BaseGames.Player
             transform.localScale = new Vector3(dir, 1f, 1f);
         }
 
+        /// <summary>
+        /// 锁定/解锁自动朝向（UpdateFacing）。
+        /// 传入 true 后 UpdateFacing 不再根据输入速度覆盖朝向，
+        /// 直到传入 false 解锁。适用于抓墙、蹬墙跳等需要手动控制朝向的状态。
+        /// </summary>
+        public void LockFacing(bool locked) => _facingLocked = locked;
+
         // ── 取消窗口 ──────────────────────────────────────────────────────────
         public void SetCancelWindowOpen(bool open) => _cancelWindowOpen = open;
 
@@ -318,7 +327,8 @@ namespace BaseGames.Player
         /// </summary>
         public void WallJumpAway(int wallDir)
         {
-            _rb.velocity = new Vector2(-wallDir * _config.WallJumpAwayForceX, _config.WallJumpAwayForceY);
+            _inputVelocityX = -wallDir * _config.WallJumpAwayForceX;
+            _rb.velocity = new Vector2(_inputVelocityX, _config.WallJumpAwayForceY);
             _coyoteTimer = 0f;
         }
 
@@ -328,7 +338,8 @@ namespace BaseGames.Player
         /// </summary>
         public void WallJumpToward(int wallDir)
         {
-            _rb.velocity = new Vector2(wallDir * _config.WallJumpTowardForceX, _config.WallJumpTowardForceY);
+            _inputVelocityX = wallDir * _config.WallJumpTowardForceX;
+            _rb.velocity = new Vector2(_inputVelocityX, _config.WallJumpTowardForceY);
             _coyoteTimer = 0f;
         }