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/en/console.php

@@ -25,4 +25,9 @@ return [
         'off_site' => 'Off the site because they expired',
         'summary' => '{0}No calls needed closing.|{1}Closed 1 expired call.|[2,*]Closed :count expired calls.',
     ],
+
+    'expiring' => [
+        'none' => 'Nothing expires on the reminder days.',
+        'summary' => '{0} Nobody to tell.|{1} Told one person.|[2,*] Told :count people.',
+    ],
 ];