шаг 3 завершен

app/Repositories/SettingRepository.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Repositories;
+
+final class SettingRepository extends BaseRepository
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function allKeyed(): array
+    {
+        $statement = $this->pdo()->query(
+            'SELECT setting_key, setting_value, value_type
+             FROM site_settings
+             ORDER BY group_name, setting_key'
+        );
+
+        $settings = [];
+
+        foreach ($statement->fetchAll() as $row) {
+            $settings[$row['setting_key']] = $this->castValue($row['setting_value'], $row['value_type']);
+        }
+
+        return $settings;
+    }
+
+    private function castValue(?string $value, string $type): mixed
+    {
+        return match ($type) {
+            'number' => $value === null ? null : (float) $value,
+            'bool' => $value === '1' || $value === 'true',
+            'json' => $value === null ? null : json_decode($value, true),
+            default => $value,
+        };
+    }
+}