Ship production optimization M1-M12.5A: queues, metrics, HTTP observability, and vector search reliability.

Keep similar-ai from tripping the global circuit on a lone URL 502, clamp Qdrant search to 100, and add Server-Timing plus slow-request logging. Studio shared props, Academy S3 exists caching, heat chunking, and Redis/scheduler hygiene stay in this rollout.

app/Services/Sitemaps/Builders/TagsSitemapBuilder.php

@@ -5,12 +5,12 @@ declare(strict_types=1);
 namespace App\Services\Sitemaps\Builders;
 
 use App\Models\Tag;
-use App\Services\Sitemaps\AbstractSitemapBuilder;
 use App\Services\Sitemaps\SitemapUrl;
 use App\Services\Sitemaps\SitemapUrlBuilder;
-use DateTimeInterface;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Model;
 
-final class TagsSitemapBuilder extends AbstractSitemapBuilder
+final class TagsSitemapBuilder extends AbstractIdShardableSitemapBuilder
 {
     public function __construct(private readonly SitemapUrlBuilder $urls)
     {
@@ -21,25 +21,21 @@ final class TagsSitemapBuilder extends AbstractSitemapBuilder
         return 'tags';
     }
 
-    public function items(): array
+    protected function shardConfigKey(): string
+    {
+        return 'tags';
+    }
+
+    protected function mapRecord(Model $record): ?SitemapUrl
+    {
+        return $this->urls->tag($record);
+    }
+
+    protected function query(): Builder
     {
         return Tag::query()
             ->where('is_active', true)
             ->where('usage_count', '>', 0)
-            ->whereHas('artworks', fn ($query) => $query->public()->published())
-            ->orderByDesc('usage_count')
-            ->orderBy('slug')
-            ->get()
-            ->map(fn (Tag $tag): SitemapUrl => $this->urls->tag($tag))
-            ->values()
-            ->all();
-    }
-
-    public function lastModified(): ?DateTimeInterface
-    {
-        return $this->dateTime(Tag::query()
-            ->where('is_active', true)
-            ->where('usage_count', '>', 0)
-            ->max('updated_at'));
+            ->whereHas('artworks', fn ($query) => $query->public()->published());
     }
 }