chore: checkpoint before block builder refactor

config/preregister.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+$env = env('APP_ENV', 'production');
+$defaultPerMinute = in_array($env, ['local', 'testing'], true) ? 1000 : 60;
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Public routes rate limit
+    |--------------------------------------------------------------------------
+    |
+    | Max requests per minute per IP for the public landing page and subscribe
+    | endpoint. Local and testing use a high default so refresh-heavy dev work
+    | does not hit 429. Override with PUBLIC_REQUESTS_PER_MINUTE in .env.
+    |
+    */
+
+    'public_requests_per_minute' => (int) env('PUBLIC_REQUESTS_PER_MINUTE', (string) $defaultPerMinute),
+
+];