cleanup

Editor/Core/MkpsxisoDownloader.cs

@@ -113,7 +113,7 @@ namespace SplashEdit.EditorCode
                 System.IO.Compression.ZipFile.ExtractToDirectory(tempFile, installDir);
 
                 // Fix nested directory (archives often have one extra level)
-                FixNestedDirectory(installDir);
+                SplashEdit.RuntimeCode.Utils.FixNestedDirectory(installDir);
 
                 try { File.Delete(tempFile); } catch { }
 
@@ -142,27 +142,6 @@ 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>
         /// Runs mkpsxiso with the given XML catalog to produce a BIN/CUE image.
         /// </summary>