first commit

src/Knowledge/Retrieval/ChunkIndexLoader.php

@@ -0,0 +1,25 @@
+<?php
+// src/Knowledge/Retrieval/ChunkIndexLoader.php
+
+declare(strict_types=1);
+
+namespace App\Knowledge\Retrieval;
+
+final class ChunkIndexLoader
+{
+    public function __construct(
+        private string $indexPath
+    ) {}
+
+    public function load(): array
+    {
+        if (!is_file($this->indexPath)) {
+            return [];
+        }
+
+        $json = file_get_contents($this->indexPath);
+        $data = $json ? json_decode($json, true) : null;
+
+        return is_array($data) ? $data : [];
+    }
+}