remove direct chnuk search. only vector search

src/Knowledge/Retrieval/CachedRetriever.php

@@ -5,16 +5,22 @@ declare(strict_types=1);
 namespace App\Knowledge\Retrieval;
 
 use Psr\Cache\CacheItemPoolInterface;
+use Psr\Cache\InvalidArgumentException;
 
-final class CachedRetriever implements RetrieverInterface
+final readonly class CachedRetriever implements RetrieverInterface
 {
     public function __construct(
-        private RetrieverInterface    $inner,
+        private RetrieverInterface     $inner,
         private CacheItemPoolInterface $cache,
-        private int                   $ttlSeconds = 600 // 10 Minuten
-    ) {}
+        private int                    $ttlSeconds
+    )
+    {
+    }
 
-    public function retrieve(string $prompt, int $limit = 3): array
+    /**
+     * @throws InvalidArgumentException
+     */
+    public function retrieve(string $prompt, int $limit = 10): array
     {
         $key = $this->buildCacheKey($prompt, $limit);