chore: import upstream snapshot with attribution

tests/fixtures/sample_php_config.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Support;
+
+class Throttle
+{
+    public const int DEFAULT_PER_SECOND = 60;
+    public const int DEFAULT_PER_DAY = 10000;
+}
+
+class RateLimiter
+{
+    public function perSecond(): int
+    {
+        return (int) config('throttle.api.per_second', 60);
+    }
+
+    public function perDay(): int
+    {
+        return (int) config('throttle.api.per_day', 10000);
+    }
+}