diff --git a/src/Ingest/IngestFlow.php b/src/Ingest/IngestFlow.php
index dd6ae36..94b846a 100644
--- a/src/Ingest/IngestFlow.php
+++ b/src/Ingest/IngestFlow.php
@@ -8,6 +8,7 @@ use App\Entity\Document;
 use App\Entity\DocumentVersion;
 use App\Index\IndexMetaManager;
 use App\Knowledge\Ingest\KnowledgeIngestService;
+use App\Service\LockService;
 use Doctrine\ORM\EntityManagerInterface;
 use Psr\Log\LoggerInterface;
 use Symfony\Component\Uid\Uuid;
@@ -23,10 +24,12 @@ final readonly class IngestFlow
         private ChunkWriteService      $chunkWriteService,
         private VectorRebuildService   $vectorRebuildService,
         private IndexMetaManager       $metaManager,
-        private IngestLockService      $lockService,
+        private LockService            $lockService,
         private LoggerInterface        $logger,
         private EntityManagerInterface $em,
-    ) {}
+    )
+    {
+    }
 
     // =========================================================
     // DOCUMENT INGEST
@@ -84,9 +87,9 @@ final readonly class IngestFlow
                     $this->logger->warning('Chunk count approaching limit.', [
                         'existing' => $existing,
                         'incoming' => $incoming,
-                        'total'    => $total,
+                        'total' => $total,
                         'document' => (string)$documentId,
-                        'version'  => (string)$version->getId(),
+                        'version' => (string)$version->getId(),
                     ]);
                 }
 
@@ -178,7 +181,7 @@ final readonly class IngestFlow
             if ($warned) {
                 $this->logger->warning('Chunk count approaching limit after global reindex.', [
                     'incoming' => $incoming,
-                    'total'    => $incoming,
+                    'total' => $incoming,
                 ]);
             }
 
diff --git a/src/Ingest/IngestLockService.php b/src/Ingest/IngestLockService.php
deleted file mode 100644
index 9469d71..0000000
--- a/src/Ingest/IngestLockService.php
+++ /dev/null
@@ -1,51 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace App\Ingest;
-
-final class IngestLockService
-{
-    private string $lockFilePath;
-
-    /** @var resource|null */
-    private $handle = null;
-
-    public function __construct(string $projectDir)
-    {
-        $this->lockFilePath = rtrim($projectDir, '/') . '/var/knowledge/locks/ingest.lock';
-    }
-
-    public function acquire(): void
-    {
-        $dir = dirname($this->lockFilePath);
-
-        if (!is_dir($dir) && !mkdir($dir, 0777, true) && !is_dir($dir)) {
-            throw new \RuntimeException('Unable to create lock directory.');
-        }
-
-        $this->handle = fopen($this->lockFilePath, 'c');
-
-        if ($this->handle === false) {
-            throw new \RuntimeException('Unable to open ingest lock file.');
-        }
-
-        if (!flock($this->handle, LOCK_EX | LOCK_NB)) {
-            throw new \RuntimeException('Another ingest process is already running.');
-        }
-    }
-
-    public function release(): void
-    {
-        if ($this->handle !== null) {
-            flock($this->handle, LOCK_UN);
-            fclose($this->handle);
-            $this->handle = null;
-        }
-    }
-
-    public function __destruct()
-    {
-        $this->release();
-    }
-}
\ No newline at end of file