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/Http/Controllers/Api/SimilarAiArtworksController.php

@@ -6,10 +6,12 @@ namespace App\Http\Controllers\Api;
 
 use App\Http\Controllers\Controller;
 use App\Models\Artwork;
+use App\Services\Vision\VectorGatewayException;
 use App\Services\Vision\VectorService;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
-use RuntimeException;
+use Illuminate\Support\Facades\Log;
+use Throwable;
 
 final class SimilarAiArtworksController extends Controller
 {
@@ -35,11 +37,12 @@ final class SimilarAiArtworksController extends Controller
 
         try {
             $items = $this->vectors->similarToArtwork($artwork, $limit);
-        } catch (RuntimeException $e) {
+        } catch (Throwable $e) {
+            $this->logSimilarityFailure($artwork->id, $e);
+
             return response()->json([
                 'data' => [],
                 'reason' => 'vector_gateway_error',
-                'message' => $e->getMessage(),
             ], 502);
         }
 
@@ -52,4 +55,19 @@ final class SimilarAiArtworksController extends Controller
             ],
         ]);
     }
+
+    private function logSimilarityFailure(int $artworkId, Throwable $e): void
+    {
+        $gateway = $e instanceof VectorGatewayException ? $e : null;
+
+        Log::warning('Vector similarity search failed', [
+            'artwork_id' => $artworkId,
+            'route' => 'api.art.similar-ai',
+            'failure_stage' => $gateway?->operation ?? 'unknown',
+            'exception_class' => $e::class,
+            'http_status' => $gateway?->httpStatus,
+            'circuit_worthy' => $gateway?->circuitWorthy ?? false,
+            'circuit_open' => app(\App\Services\Vision\VectorGatewayClient::class)->circuitOpen(),
+        ]);
+    }
 }