Console Commands

• Extend `Command` and use `#[AsCommand(name: 'app:do-thing')]`. Run via `bin/console app:do-thing`.
• Implement `execute(InputInterface $input, OutputInterface $output): int` — return 0 for success.
• Define args and options in `configure()` (or via `#[Argument]` / `#[Option]` attributes in modern Symfony).
• Use `SymfonyStyle` for nicely formatted output: `$io->success()`, `$io->table()`, `$io->progressBar()`.
• Inject services via the constructor, exactly like a controller.

#[AsCommand(name: 'app:reindex', description: 'Rebuild the search index')]
final class ReindexCommand extends Command
{
    public function __construct(private Indexer $indexer) { parent::__construct(); }

    protected function execute(InputInterface $in, OutputInterface $out): int
    {
        $this->indexer->rebuild();
        return Command::SUCCESS;
    }
}