anchor.diff: +import "dart:async";
   import "dart:convert";
   import "dart:io";
   
  
positive.code: Map<String, dynamic> storage = {};
  
  typedef CommandHandler(List<String> args);
  
negative.code: 
  main() async {
    await loadStorage();
    await loadSystemCommands();
  
    if (storage["prompt"] != null) {
      prompt = storage["prompt"];
  