Manage webhooks from the panel

Create one and see its secret once, send a test, change the secret, and read
each delivery with what the other end answered.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

lang/en/panel.php

@@ -146,6 +146,58 @@ return [
         'select_all' => 'Select all',
     ],
 
+    'webhooks' => [
+        'label' => 'Webhook',
+        'plural' => 'Webhooks',
+        'fields' => [
+            'name' => 'Name',
+            'url' => 'URL',
+            'url_hint' => 'HTTPS and a public address: localhost, private IPs and internal names are refused.',
+            'events' => 'Events',
+            'include_personal_data' => 'Include personal data',
+            'include_personal_data_hint' => 'Only for "Submission received": adds the name, e-mail and message of whoever wrote.',
+            'is_active' => 'Active',
+            'failures' => 'Failures in a row',
+            'last_delivered_at' => 'Last successful delivery',
+        ],
+        'events' => [
+            '*' => 'All',
+            'application_received' => 'Submission received in the inbox',
+            'content_published' => 'Content published',
+            'content_unpublished' => 'Content taken off the site',
+            'review_requested' => 'Review requested',
+            'review_returned' => 'Review returned for changes',
+        ],
+        'actions' => [
+            'ping' => 'Send a test',
+            'ping_sent' => 'Test on its way',
+            'ping_hint' => 'See how it went under "Deliveries", further down.',
+            'rotate' => 'Change secret',
+            'rotate_hint' => 'The current secret stops working at once: update the receiving service straight after.',
+        ],
+        'secret' => [
+            'title' => 'Keep this secret',
+            'body' => 'It signs every delivery and will not be shown again: :secret',
+        ],
+        'deliveries' => [
+            'title' => 'Deliveries',
+            'event' => 'Event',
+            'status' => 'Status',
+            'response' => 'Response',
+            'attempts' => 'Attempts',
+            'error' => 'Error',
+            'created_at' => 'When',
+            'payload' => 'View content',
+            'redeliver' => 'Send again',
+            'redelivered' => 'Sending again',
+            'statuses' => [
+                'pending' => 'Pending',
+                'succeeded' => 'Delivered',
+                'failed' => 'Failed',
+            ],
+        ],
+    ],
+
     'tags' => [
         'label' => 'Tag',
         'plural' => 'Tags',