fix: Sidekick 에디터 자동 실행 방지

- Sidekick Character Tool과 Downloader가 메뉴 실행 시에만 열리도록 수동 실행 플래그를 추가
- 데이터베이스 초기화 실패 및 로딩 상태 null 참조 방어 처리 추가
- TMP 한글 폰트 에셋의 글리프/문자 테이블 갱신

Assets/External/Models/SidekickCharacters/Database/Side_Kick_Data.db.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 936b212f6c1cb68aaab2cbd3180f4d7a
+guid: 272ca4c45d498854a9723b5a933c89ff
 DefaultImporter:
   externalObjects: {}
   userData: 

Assets/External/Models/SidekickCharacters/Scripts/Editor/ModularCharacterWindow.cs

@@ -48,6 +48,7 @@ namespace Synty.SidekickCharacters
         private const string _BLEND_SHAPE_HEAVY_NAME = "defaultHeavy";
         private const string _BLEND_SHAPE_SKINNY_NAME = "defaultSkinny";
         private const string _AUTO_OPEN_STATE = "syntySkAutoOpenState";
+        private const string _MANUAL_OPEN_SESSION_KEY = "syntySkManualOpenRequested";
         private const string _OUTPUT_MODEL_NAME = "Combined Character";
         private const string _PART_COUNT_BODY = " parts in library";
         private const string _TEXTURE_COLOR_NAME = "ColorMap.png";
@@ -183,7 +184,7 @@ namespace Synty.SidekickCharacters
         /// <inheritdoc cref="OnDestroy" />
         private void OnDestroy()
         {
-            if (_useAutoSaveAndLoad)
+            if (_useAutoSaveAndLoad && _currentSpecies != null && _currentCharacter != null)
             {
                 SerializedCharacter savedCharacter = CreateSerializedCharacter(_OUTPUT_MODEL_NAME);
                 Serializer serializer = new Serializer();
@@ -192,13 +193,20 @@ namespace Synty.SidekickCharacters
             }
 
             // ensures we release the file lock on the database
-            _dbManager.CloseConnection();
+            _dbManager?.CloseConnection();
         }
 
 #if UNITY_EDITOR
         /// <inheritdoc cref="OnEnable" />
         private void OnEnable()
         {
+            if (!SessionState.GetBool(_MANUAL_OPEN_SESSION_KEY, false))
+            {
+                _useAutoSaveAndLoad = false;
+                Close();
+                return;
+            }
+
             EditorApplication.playModeStateChanged += StateChange;
             EditorApplication.update += AnimationUpdate;
         }
@@ -211,7 +219,7 @@ namespace Synty.SidekickCharacters
         /// <inheritdoc cref="Update" />
         private void Update()
         {
-            if (_loadingContent)
+            if (_loadingContent && _loadingImage != null)
             {
                 Vector3 rotation = _loadingImage.transform.rotation.eulerAngles;
                 rotation += new Vector3(0, 0, 0.5f * Time.deltaTime);
@@ -461,6 +469,7 @@ namespace Synty.SidekickCharacters
         public async void CreateGUI()
         {
             _loadingContent = true;
+            _loadingImage = null;
             InitializeEditorWindow();
             _root = rootVisualElement;
             _root.Clear();
@@ -469,10 +478,23 @@ namespace Synty.SidekickCharacters
                 _root.styleSheets.Add(_editorStyle);
             }
 
+            try
+            {
                 InitializeDatabase();
+            }
+            catch (Exception ex)
+            {
+                _loadingContent = false;
+                _dbManager?.CloseConnection();
+                _dbManager = null;
+                Debug.LogWarning($"Failed to initialize Sidekick database. Please check the database file.\n{ex.Message}");
+                return;
+            }
+
             // if we still can't connect, something's gone wrong, don't keep building the GUI
             if (_dbManager?.GetCurrentDbConnection() == null)
             {
+                _loadingContent = false;
                 return;
             }
 
@@ -804,6 +826,7 @@ namespace Synty.SidekickCharacters
             }
             catch
             {
+                _loadingContent = false;
                 Debug.LogWarning("Failed to load tool data. Please try again.\nPlease note that data loading may take some time.");
             }
         }

Assets/External/Models/SidekickCharacters/Scripts/Editor/UI/MenuBootstrapController.cs

@@ -12,38 +12,11 @@ using UnityEngine;
 
 namespace Synty.SidekickCharacters.UI
 {
-    [InitializeOnLoad]
     public static class MenuBootstrapController
     {
-        private const string _AUTO_OPEN_STATE = "syntySkAutoOpenState";
-        private const string _PREFS_CHECK_NAME = "syntySKCheckDependencies";
+        private const string _MANUAL_OPEN_SESSION_KEY = "syntySkManualOpenRequested";
 
         private static ModularCharacterWindow _sidekickCharacterWindow;
-        private static bool _openWindowOnStart = true;
-
-        static MenuBootstrapController()
-        {
-            EditorApplication.update += OpenWindowOnStartup;
-        }
-
-        /// <summary>
-        ///     Opens the Character Creator window when Unity starts or the plugin is added to a project.
-        /// </summary>
-        private static void OpenWindowOnStartup()
-        {
-            _openWindowOnStart = EditorPrefs.GetBool(_AUTO_OPEN_STATE, true);
-            EditorApplication.update -= OpenWindowOnStartup;
-            if (_openWindowOnStart)
-            {
-                if (!SessionState.GetBool("FirstInitDone", false))
-                {
-                    ShowSidekickCharacterWindow();
-          
-                    SessionState.SetBool("FirstInitDone", true);
-                }
-                
-            }
-        }
 
         /// <summary>
         ///     Creates the Sidekick Character Creator window and adds it to the toolbar.
@@ -51,6 +24,7 @@ namespace Synty.SidekickCharacters.UI
         [MenuItem("Synty/Sidekick Character Tool")]
         public static void ShowSidekickCharacterWindow()
         {
+            SessionState.SetBool(_MANUAL_OPEN_SESSION_KEY, true);
             FindSidekickCharacterWindow();
             _sidekickCharacterWindow.Show();
         }

Assets/External/Models/SidekickCharacters/Scripts/Editor/Utility/ToolDownloader.cs

@@ -28,12 +28,19 @@ namespace Synty.SidekickCharacters
         private const string _VERSION_TAG = "\"tag_name\":";
         private const string _VERSION_KEY = "sk_current_tool_version";
         private const string _SIDEKICK_TOOL_MENU_ITEM = "Synty/Sidekick Character Tool";
+        private const string _MANUAL_OPEN_SESSION_KEY = "syntySkDownloaderManualOpenRequested";
 
         private string _version = "-";
         private Label _latestVersion;
 
         public void Awake()
         {
+            if (!SessionState.GetBool(_MANUAL_OPEN_SESSION_KEY, false))
+            {
+                Close();
+                return;
+            }
+
             BackgroundUpdateCheck();
         }
 
@@ -288,21 +295,16 @@ namespace Synty.SidekickCharacters
     }
 
     /// <summary>
-    ///     Creates an instance of the Downloader Tool, to allow checks for new versions on editor startup.
+    ///     메뉴에서 요청한 경우에만 다운로더 도구를 생성하고 연다.
     /// </summary>
-    [InitializeOnLoad]
     public static class DownloaderBackgroundService
     {
-        private static ToolDownloader _instance;
+        private const string _MANUAL_OPEN_SESSION_KEY = "syntySkDownloaderManualOpenRequested";
 
-        static DownloaderBackgroundService()
-        {
-            EditorApplication.update += CreateToolInstance;
-        }
+        private static ToolDownloader _instance;
 
         static void CreateToolInstance()
         {
-            EditorApplication.update -= CreateToolInstance;
             EditorWindow[] allWindows = Resources.FindObjectsOfTypeAll<EditorWindow>();
 
             // Filter the windows to find the one with the desired type name
@@ -343,6 +345,7 @@ namespace Synty.SidekickCharacters
         [MenuItem("Synty/Sidekick Tool Downloader")]
         public static void ShowToolDownloaderWindow()
         {
+            SessionState.SetBool(_MANUAL_OPEN_SESSION_KEY, true);
             if (_instance == null)
             {
                 CreateToolInstance();