add chunk limiter

src/Index/IndexMetaManager.php

@@ -7,19 +7,24 @@ namespace App\Index;
 final class IndexMetaManager
 {
     private string $metaPath;
+    private string $runtimePath;
     private IndexConfigurationProvider $provider;
 
     public function __construct(
         string $metaPath,
+        string $runTimePath,
         IndexConfigurationProvider $provider
     ) {
         $this->metaPath = $metaPath;
         $this->provider = $provider;
+
+        // runtime liegt im selben Verzeichnis
+        $this->runtimePath = $runTimePath;
     }
 
-    // -----------------------------------------------------
-    // Public API
-    // -----------------------------------------------------
+    // =====================================================
+    // META (Governance – unverändert lassen!)
+    // =====================================================
 
     public function ensureExists(): void
     {
@@ -93,4 +98,58 @@ final class IndexMetaManager
             )
         );
     }
+
+    // =====================================================
+    // RUNTIME (Chunk Counter etc.)
+    // =====================================================
+
+    private function ensureRuntimeFileExists(): void
+    {
+        if (is_file($this->runtimePath)) {
+            return;
+        }
+
+        $dir = dirname($this->runtimePath);
+        if (!is_dir($dir)) {
+            mkdir($dir, 0777, true);
+        }
+
+        $payload = [
+            'chunk_count' => 0,
+            'last_rebuild_at' => null,
+        ];
+
+        file_put_contents(
+            $this->runtimePath,
+            json_encode($payload, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES)
+        );
+    }
+
+    public function updateRuntimeStats(int $chunkCount): void
+    {
+        $this->ensureRuntimeFileExists();
+
+        $payload = [
+            'chunk_count' => $chunkCount,
+            'last_rebuild_at' => (new \DateTimeImmutable())->format(DATE_ATOM),
+        ];
+
+        file_put_contents(
+            $this->runtimePath,
+            json_encode($payload, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES)
+        );
+    }
+
+    public function getRuntimeChunkCount(): int
+    {
+        $this->ensureRuntimeFileExists();
+
+        $data = json_decode(
+            (string) file_get_contents($this->runtimePath),
+            true
+        );
+
+        return (int)($data['chunk_count'] ?? 0);
+    }
 }
+