Repair: copy legacy joinDate into new user's created_at when creating users from legacy wallz

app/Services/Vision/ArtworkVisionImageUrl.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Services\Vision;
+
+use App\Models\Artwork;
+use App\Services\ThumbnailService;
+
+final class ArtworkVisionImageUrl
+{
+    public function fromArtwork(Artwork $artwork): ?string
+    {
+        return $this->fromHash(
+            (string) ($artwork->hash ?? ''),
+            (string) ($artwork->thumb_ext ?: 'webp')
+        );
+    }
+
+    public function fromHash(?string $hash, ?string $ext = 'webp', string $size = 'md'): ?string
+    {
+        $clean = strtolower((string) preg_replace('/[^a-z0-9]/', '', (string) $hash));
+        if ($clean === '') {
+            return null;
+        }
+
+        return ThumbnailService::fromHash($clean, $ext, $size);
+    }
+}