Cleanup code

bin/adventofcode2025.dart

@@ -2,9 +2,6 @@ import 'package:adventofcode2025/day1/command.dart' as day1;
 
 import 'package:args/command_runner.dart';
 
-const help = 'help';
-const dayNumber = 'day';
-
 void main(List<String> arguments) {
   CommandRunner("adventofcode2025", "Advent of Code 2025 solutions")
     ..addCommand(day1.Day1Command())

lib/day1/command.dart

@@ -3,7 +3,10 @@ import "package:args/command_runner.dart";
 class Day1Command extends Command {
   // The [name] and [description] properties must be defined by every
   // subclass.
+  @override
   final name = "day1";
+
+  @override
   final description = "Run Advent of Code 2025 Day 1";
 
   Day1Command() {