Add a statistics page to the panel

The most read, reads per language with a daily chart, and published content
nobody opened, each compared with the period before.

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

lang/en/panel.php

@@ -144,6 +144,34 @@ return [
         'select_all' => 'Select all',
     ],
 
+    'statistics' => [
+        'title' => 'Statistics',
+        'period' => 'Period',
+        'last_days' => 'Last :days days',
+        'languages' => 'Reads by language',
+        'compared' => 'Compared with the previous period of the same length.',
+        'daily' => 'Reads per day',
+        'top' => 'Most read',
+        'no_views' => 'No reads in this period yet.',
+        'unread' => 'On the site and unread',
+        'unread_hint' => 'Published, and nobody opened it in the period: either hard to find, or not worth finding.',
+        'all_read' => 'Everything published was read at least once.',
+        'new' => 'new',
+        'columns' => [
+            'title' => 'Title',
+            'type' => 'Type',
+            'views' => 'Reads',
+            'change' => 'Change',
+        ],
+        'types' => [
+            'pages' => 'Page',
+            'projects' => 'Project',
+            'services' => 'Service',
+            'calls' => 'Call',
+            'members' => 'Member',
+        ],
+    ],
+
     'calendar' => [
         'title' => 'Editorial calendar',
         'legend' => 'Legend',