cleanup

Editor/Core/PSXAudioConverter.cs

@@ -126,7 +126,7 @@ namespace SplashEdit.EditorCode
                 }
 
                 // Fix nested directory (sometimes archives have one extra level)
-                FixNestedDirectory(installDir);
+                SplashEdit.RuntimeCode.Utils.FixNestedDirectory(installDir);
 
                 try { File.Delete(tempFile); } catch { }
 
@@ -155,27 +155,6 @@ namespace SplashEdit.EditorCode
             }
         }
 
-        private static void FixNestedDirectory(string dir)
-        {
-            // If extraction created exactly one subdirectory, flatten it
-            var subdirs = Directory.GetDirectories(dir);
-            if (subdirs.Length == 1)
-            {
-                string nested = subdirs[0];
-                foreach (string file in Directory.GetFiles(nested))
-                {
-                    string dest = Path.Combine(dir, Path.GetFileName(file));
-                    if (!File.Exists(dest)) File.Move(file, dest);
-                }
-                foreach (string sub in Directory.GetDirectories(nested))
-                {
-                    string dest = Path.Combine(dir, Path.GetFileName(sub));
-                    if (!Directory.Exists(dest)) Directory.Move(sub, dest);
-                }
-                try { Directory.Delete(nested, true); } catch { }
-            }
-        }
-
         /// <summary>
         /// Converts a Unity AudioClip to PS1 SPU ADPCM format using psxavenc.
         /// Returns the ADPCM byte array, or null on failure.