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

resources/views/public/page.blade.php

@@ -56,13 +56,14 @@
                     'phase' => $alpinePhase,
                     'startAtMs' => $page->start_date->getTimestamp() * 1000,
                     'phoneEnabled' => $page->isPhoneFieldEnabledForSubscribers(),
+                    'phoneRequired' => $page->isPhoneFieldEnabledForSubscribers() && $page->isPhoneFieldRequiredForSubscribers(),
                     'subscribeUrl' => route('public.subscribe', ['publicPage' => $page]),
                     'csrfToken' => csrf_token(),
                     'genericError' => __('Something went wrong. Please try again.'),
                     'labelDay' => __('day'),
                     'labelDays' => __('days'),
                     'invalidEmailMsg' => __('Please enter a valid email address.'),
-                    'invalidPhoneMsg' => __('Please enter a valid phone number (8–15 digits).'),
+                    'invalidPhoneMsg' => __('Please enter a valid phone number.'),
                     'formButtonLabel' => $formButtonLabel,
                     'formButtonColor' => $formButtonColor,
                     'formButtonTextColor' => $formButtonTextColor,