feat: E.164 phone validation and storage with libphonenumber

- Add giggsey/libphonenumber-for-php, PhoneNumberNormalizer, ValidPhoneNumber rule

- Store subscribers as E.164; mutator normalizes on save; optional phone required from form block

- Migration to normalize legacy subscriber phones; Mailwizz/search/UI/tests updated

- Add run-deploy-from-local.sh and PREREGISTER_DEFAULT_PHONE_REGION in .env.example

Made-with: Cursor

config/preregister.php

@@ -7,6 +7,18 @@ $defaultPerMinute = in_array($env, ['local', 'testing'], true) ? 1000 : 60;
 
 return [
 
+    /*
+    |--------------------------------------------------------------------------
+    | Default phone region (ISO 3166-1 alpha-2)
+    |--------------------------------------------------------------------------
+    |
+    | Used when parsing numbers without a country prefix (e.g. national format).
+    | Override with PREREGISTER_DEFAULT_PHONE_REGION in .env.
+    |
+    */
+
+    'default_phone_region' => strtoupper((string) env('PREREGISTER_DEFAULT_PHONE_REGION', 'NL')),
+
     /*
     |--------------------------------------------------------------------------
     | Public routes rate limit