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/Jobs/IndexUserJob.php

@@ -6,6 +6,7 @@ namespace App\Jobs;
 
 use App\Models\User;
 use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldBeUniqueUntilProcessing;
 use Illuminate\Contracts\Queue\ShouldQueue;
 use Illuminate\Foundation\Bus\Dispatchable;
 use Illuminate\Queue\InteractsWithQueue;
@@ -15,14 +16,28 @@ use Illuminate\Queue\SerializesModels;
  * Queued job: index (or re-index) a single User in Meilisearch.
  * Dispatched by UserStatsService whenever stats change.
  */
-class IndexUserJob implements ShouldQueue
+class IndexUserJob implements ShouldQueue, ShouldBeUniqueUntilProcessing
 {
     use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
 
     public int $tries   = 3;
     public int $timeout = 30;
 
-    public function __construct(public readonly int $userId) {}
+    /**
+     * Unique while queued. handle() loads the user from DB so the queued job
+     * still reflects later stats changes. uniqueFor covers a dead worker lock.
+     */
+    public int $uniqueFor = 60;
+
+    public function __construct(public readonly int $userId)
+    {
+        $this->onQueue((string) config('scout.queue.queue', 'search'));
+    }
+
+    public function uniqueId(): string
+    {
+        return (string) $this->userId;
+    }
 
     public function handle(): void
     {