chore: 외부 에셋 권한 및 줄바꿈 재기록 반영

- Assets/External 하위 샘플 및 서드파티 에셋 파일의 실행 비트 변경을 별도 커밋으로 분리
- PolygonGeneric, SidekickCharacters, Synty 도구 자산 전반의 줄바꿈 및 재직렬화 차이를 그대로 보존
- 프로젝트 고유 로직 변경과 분리해 이후 히스토리에서 외부 에셋 노이즈 범위를 식별하기 쉽게 정리

Assets/External/Models/SidekickCharacters/Scripts/Runtime/API/SidekickRuntime.cs

@@ -230,42 +230,6 @@ namespace Synty.SidekickCharacters.API
             await runtime.PopulatePresetLibrary();
         }
 
-        private static List<string> GetSidekickPartFiles()
-        {
-            string packageRootPath = DatabaseManager.GetPackageRootAbsolutePath();
-            if (!string.IsNullOrEmpty(packageRootPath))
-            {
-                string meshesRootPath = Path.Combine(packageRootPath, "Resources", "Meshes");
-                if (Directory.Exists(meshesRootPath))
-                {
-                    return Directory
-                        .GetFiles(meshesRootPath, "SK_*_*_*_*_*.fbx", SearchOption.AllDirectories)
-                        .Select(ToAssetPath)
-                        .ToList();
-                }
-            }
-
-            return Directory.GetFiles("Assets", "SK_*_*_*_*_*.fbx", SearchOption.AllDirectories).ToList();
-        }
-
-        private static string ToAssetPath(string fullPath)
-        {
-            if (string.IsNullOrWhiteSpace(fullPath))
-            {
-                return fullPath;
-            }
-
-            string normalizedFullPath = fullPath.Replace('\\', '/');
-            string normalizedAssetsPath = Application.dataPath.Replace('\\', '/');
-
-            if (!normalizedFullPath.StartsWith(normalizedAssetsPath, StringComparison.OrdinalIgnoreCase))
-            {
-                return normalizedFullPath;
-            }
-
-            return "Assets" + normalizedFullPath.Substring(normalizedAssetsPath.Length);
-        }
-
         /// <summary>
         ///     Takes all the parts selected in the window, and combines them into a single model in the scene.
         /// </summary>
@@ -548,7 +512,7 @@ namespace Synty.SidekickCharacters.API
             _partOutfitToggleMap = new Dictionary<string, bool>();
             _partCount = 0;
 
-            List<string> files = GetSidekickPartFiles();
+            List<string> files = Directory.GetFiles("Assets", "SK_*_*_*_*_*.fbx", SearchOption.AllDirectories).ToList();
 
             foreach (CharacterPartType partType in Enum.GetValues(typeof(CharacterPartType)))
             {
@@ -646,7 +610,7 @@ namespace Synty.SidekickCharacters.API
             _speciesDictionary = new Dictionary<string, SidekickSpecies>();
             _partCount = 0;
 
-            List<string> files = GetSidekickPartFiles();
+            List<string> files = Directory.GetFiles("Assets", "SK_*_*_*_*_*.fbx", SearchOption.AllDirectories).ToList();
             Dictionary<string, string> filesOnDisk = new Dictionary<string, string>();
             foreach (string file in files)
             {