Studio: make grid checkbox rectangular and commit table changes

app/Observers/ArtworkObserver.php

@@ -5,6 +5,8 @@ declare(strict_types=1);
 namespace App\Observers;
 
 use App\Models\Artwork;
+use App\Jobs\RecComputeSimilarByTagsJob;
+use App\Jobs\RecComputeSimilarHybridJob;
 use App\Services\ArtworkSearchIndexer;
 use App\Services\UserStatsService;
 
@@ -39,6 +41,14 @@ class ArtworkObserver
         }
 
         $this->indexer->update($artwork);
+
+        // §7.5 On-demand: recompute similarity when tags/categories could have changed.
+        // The pivot sync happens outside this observer, so we dispatch on every
+        // meaningful update and let the job be idempotent (cheap if nothing changed).
+        if ($artwork->is_public && $artwork->published_at) {
+            RecComputeSimilarByTagsJob::dispatch($artwork->id)->delay(now()->addSeconds(30));
+            RecComputeSimilarHybridJob::dispatch($artwork->id)->delay(now()->addMinutes(1));
+        }
     }
 
     /** Soft delete — remove from search and decrement uploads_count. */