handle specific utf-16 encoding for windows

Author: ix-56h

src/gitingest/utils/file_utils.py

@@ -27,9 +27,11 @@ def _get_preferred_encodings() -> list[str]:
         platform's default encoding followed by common fallback encodings.
 
     """
-    encodings = [locale.getpreferredencoding(), "utf-8", "utf-16", "utf-16le", "utf-8-sig", "latin"]
+    encodings = [locale.getpreferredencoding(), "utf-8", "utf-16le", "utf-8-sig", "latin"]
     if platform.system() == "Windows":
-        encodings += ["cp1252", "iso-8859-1"]
+        encodings += ["utf-16be", "cp1252", "iso-8859-1"]
+    else:
+        encodings += ["utf-16"]
     return list(dict.fromkeys(encodings))