added nice "error 500" pages, fixed core system migration

resources/lang/en/marketing.php

@@ -180,6 +180,30 @@ return [
         'cta_contact' => 'Get in touch',
         'requested_path_label' => 'Requested path',
     ],
+    'server_error' => [
+        'title' => 'We ran into an issue',
+        'subtitle' => 'Our team has already been notified.',
+        'description' => 'While we work on the fix, you can follow the tips below or head back to a safe spot in the app.',
+        'tip_heading' => 'In the meantime',
+        'tips' => [
+            'Reload the page after a short break.',
+            'Visit the homepage or packages overview to keep browsing.',
+            'Contact us if the issue persists or you need urgent help.',
+        ],
+        'tip_fallback' => 'Please try again in a moment.',
+        'status_label' => 'Status code',
+        'hint_label' => 'What happened?',
+        'cta_home' => 'Back to homepage',
+        'cta_packages' => 'Explore packages',
+        'cta_contact' => 'Contact support',
+        'hints' => [
+            'database' => 'Where’s the database? We can’t reach it right now – it’s usually a credentials or network issue.',
+            'storage' => 'Uploads storage is temporarily unavailable or read-only. Nothing was lost; please retry shortly.',
+            'queue' => 'Our background workers (queue/Redis) are offline for a moment. We are restarting them.',
+            'network' => 'We can’t connect to an upstream service. It might be a firewall or provider outage.',
+            'generic' => 'We hit an unexpected error and are already investigating.',
+        ],
+    ],
     'success' => [
         'title' => 'Success',
         'verify_email' => 'Verify Email',