Adjust refactor

merico/refactor/command.yml

@@ -1,5 +1,6 @@
 description: rewrite selected code.
 hint: question
 input: required
+help: README.md
 steps:
   - run: $devchat_python $command_path/rewrite.py "$input"

merico/refactor/names/command.yml

@@ -1,4 +1,5 @@
 description: Automatically rename poorly-named local variables for improved readability. Select the code segment and execute this command to optimize variable names.
+help: ../README.md
 steps:
   - run: $devchat_python $command_path/../rewrite.py "Refine internal variable and function names within the code to achieve concise and meaningful identifiers that comply with English naming conventions."
 

merico/refactor/rewrite.py

@@ -2,10 +2,10 @@ import os
 import re
 import sys
 
-from devchat.ide.service import IDEService
-from devchat.ide.vscode_services import selected_lines, visible_lines
 from devchat.llm import chat
 
+from lib.ide_service import IDEService
+
 
 def get_selected_code():
     """