Warn about calls closing and content coming off the site

A dashboard widget lists what expires in the next two weeks, and a daily
command reminds whoever edits it a week and a day ahead.

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

lang/ca/panel.php

@@ -144,6 +144,25 @@ return [
         'select_all' => 'Selecciona-ho tot',
     ],
 
+    'expiring' => [
+        'heading' => 'Pròxims venciments',
+        'description' => 'Convocatòries que tanquen i contingut que surt del web en els pròxims :days dies.',
+        'types' => [
+            'calls' => 'Convocatòria',
+            'pages' => 'Pàgina',
+            'projects' => 'Projecte',
+            'services' => 'Servei',
+        ],
+        'events' => [
+            'closes' => 'tanca :when (:date)',
+            'unpublishes' => 'surt del web :when (:date)',
+        ],
+        'notification' => [
+            'title' => '{1} Una cosa venç aviat|[2,*] :count coses vencen aviat',
+            'open' => 'Obrir',
+        ],
+    ],
+
     'duplicate' => [
         'label' => 'Duplicar',
         'heading' => 'Duplicar com a esborrany',