feat: 디버그 패널 스킬 강제 발동 및 UI 모드 토글 시스템 추가

- UIModeController: leftAlt 키로 커서 표시/게임플레이 입력 차단 토글 (공용 싱글톤)
- DebugPanelUI: 보스 스킬 강제 발동 섹션 추가 (드롭다운 + 발동/취소 버튼)
- 에디터에서 Data/Skills의 보스 이름 기반 스킬 검색, 빌드에서 패턴 슬롯 fallback
- BossCombatBehaviorContext.GetAllPatternSkills() 추가 (디버그용 스킬 목록 수집)
- TMP Settings에 한글 폰트(MaruBuri)를 fallback으로 등록
- 젬/패시브/디버그 토글 버튼을 우측 하단에 수직 정렬
- InputSystem에 UIMode 액션(leftAlt) 추가

Assets/_Game/Scripts/UI/UIModeController.cs

@@ -0,0 +1,151 @@
+#if UNITY_EDITOR || DEVELOPMENT_BUILD
+
+using System;
+
+using UnityEngine;
+
+using Colosseum.Player;
+
+namespace Colosseum.UI
+{
+    /// <summary>
+    /// 공용 UI 모드 컨트롤러.
+    /// UIMode 입력(leftAlt)으로 커서 표시/숨김과 게임플레이 입력 차단을 토글합니다.
+    /// </summary>
+    [DisallowMultipleComponent]
+    public class UIModeController : MonoBehaviour
+    {
+        private static UIModeController instance;
+
+        /// <summary>
+        /// 현재 활성화된 UIModeController 인스턴스
+        /// </summary>
+        public static UIModeController Instance => instance;
+
+        /// <summary>
+        /// UI 모드 활성화 여부
+        /// </summary>
+        public bool IsUIModeActive { get; private set; }
+
+        /// <summary>
+        /// UI 모드 상태 변경 이벤트
+        /// </summary>
+        public event Action<bool> OnUIModeChanged;
+
+        private InputSystem_Actions inputActions;
+        private PlayerMovement playerMovement;
+        private PlayerSkillInput playerSkillInput;
+
+        private bool previousCursorVisible;
+        private CursorLockMode previousCursorLockState;
+
+        private void Awake()
+        {
+            if (instance != null && instance != this)
+            {
+                Destroy(gameObject);
+                return;
+            }
+
+            instance = this;
+        }
+
+        private void OnDestroy()
+        {
+            if (instance == this)
+                instance = null;
+
+            CleanupInput();
+        }
+
+        private void Start()
+        {
+            InitializeInput();
+        }
+
+        private void Update()
+        {
+            if (playerSkillInput == null)
+                FindLocalPlayerReferences();
+        }
+
+        private void InitializeInput()
+        {
+            if (inputActions != null)
+                return;
+
+            inputActions = new InputSystem_Actions();
+            inputActions.Player.UIMode.performed += OnUIModePerformed;
+            inputActions.Player.UIMode.Enable();
+        }
+
+        private void CleanupInput()
+        {
+            if (inputActions != null)
+            {
+                inputActions.Player.UIMode.performed -= OnUIModePerformed;
+                inputActions.Player.UIMode.Disable();
+                inputActions.Dispose();
+                inputActions = null;
+            }
+        }
+
+        private void FindLocalPlayerReferences()
+        {
+            PlayerSkillInput[] skillInputs = FindObjectsByType<PlayerSkillInput>(FindObjectsSortMode.None);
+            for (int i = 0; i < skillInputs.Length; i++)
+            {
+                if (skillInputs[i] != null && skillInputs[i].IsOwner)
+                {
+                    playerSkillInput = skillInputs[i];
+                    playerMovement = skillInputs[i].GetComponent<PlayerMovement>();
+                    break;
+                }
+            }
+        }
+
+        /// <summary>
+        /// UI 모드를 수동으로 설정합니다.
+        /// </summary>
+        public void SetUIModeActive(bool active)
+        {
+            if (IsUIModeActive == active)
+                return;
+
+            IsUIModeActive = active;
+
+            if (active)
+            {
+                previousCursorVisible = Cursor.visible;
+                previousCursorLockState = Cursor.lockState;
+                Cursor.visible = true;
+                Cursor.lockState = CursorLockMode.None;
+                SetGameplayInputBlocked(true);
+            }
+            else
+            {
+                SetGameplayInputBlocked(false);
+                Cursor.visible = previousCursorVisible;
+                Cursor.lockState = previousCursorLockState;
+            }
+
+            OnUIModeChanged?.Invoke(IsUIModeActive);
+        }
+
+        private void OnUIModePerformed(UnityEngine.InputSystem.InputAction.CallbackContext context)
+        {
+            SetUIModeActive(!IsUIModeActive);
+        }
+
+        private void SetGameplayInputBlocked(bool blocked)
+        {
+            if (playerMovement != null)
+                playerMovement.SetGameplayInputEnabled(!blocked);
+
+            if (playerSkillInput != null)
+                playerSkillInput.SetGameplayInputEnabled(!blocked);
+        }
+    }
+}
+
+#endif