New version

public/page/api/materials.php

@@ -0,0 +1,19 @@
+<?php
+declare(strict_types=1);
+
+header('Content-Type: application/json; charset=utf-8');
+
+$app = app();
+$pdo = $app->pdo();
+
+if (!$pdo) {
+    http_response_code(500);
+    echo json_encode(['error' => 'DB disabled or unavailable'], JSON_UNESCAPED_UNICODE);
+    exit;
+}
+
+$repo = new \App\Repository\MaterialMatrixRepository($pdo);
+$materials = $repo->listActiveMaterials();
+
+echo json_encode($materials, JSON_UNESCAPED_UNICODE);
+exit;