BUG FIX: Duplicate extension on move.

__init__.py

@@ -706,7 +706,7 @@ async def delete_model(request):
 
     _, extension = os.path.split(file)
     if not extension in folder_paths_get_supported_pt_extensions(model_type):
-        # cannot move arbitrary files
+        # cannot delete arbitrary files
         return web.json_response(result)
 
     if os.path.isfile(file):

web/model-manager.js

@@ -1836,12 +1836,10 @@ class ModelManager extends ComfyDialog {
                                             const container = this.#el.modelInfoContainer;
                                             const oldFile = container.dataset.path;
                                             const [oldFilePath, oldFileName] = searchPath_split(oldFile);
-                                            const [_, extension] = searchPath_splitExtension(oldFile);
                                             const newFile = (
                                                 moveDestinationInput.value + 
                                                 this.#searchSeparator + 
-                                                oldFileName + 
-                                                extension
+                                                oldFileName
                                             );
                                             moved = await request(
                                                 `/model-manager/model/move`,