Add CLI audit command docs

app/Console/Commands/CheckArtworkUserIdsCommand.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Console\Commands;
+
+use Illuminate\Console\Command;
+
+final class CheckArtworkUserIdsCommand extends Command
+{
+    protected $signature = 'artworks:check-user-ids
+                            {--chunk=1000 : Number of artworks to process per chunk}
+                            {--show-missing=25 : Maximum number of missing references to print}
+                            {--artwork-id= : Only check this specific artwork ID}
+                            {--json : Output the summary as JSON}';
+
+    protected $description = 'Check whether every artworks.user_id exists in the users table.';
+
+    public function handle(): int
+    {
+        $options = [
+            '--chunk' => (string) max(1, (int) $this->option('chunk')),
+            '--show-missing' => (string) max(0, (int) $this->option('show-missing')),
+        ];
+
+        if ($this->option('artwork-id') !== null) {
+            $options['--artwork-id'] = (string) (int) $this->option('artwork-id');
+        }
+
+        if ((bool) $this->option('json')) {
+            $options['--json'] = true;
+        }
+
+        return $this->call('artworks:check-user-refs', $options);
+    }
+}