Cleanup code

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() {