design: notification-mail-recheck - Re-check DNS on Settings

The owner, 2026-10-16: "Да, бери notification-mail-recheck, потом режь
2.9.0."

Server › Settings gets Re-check DNS in its page head, as an outbound
domain's page has it beside its own DNS records box; the Notification
mail box's end slot says when the records were checked ("The server's
own name · checked 3 min ago"), as the domain's DNS box does. The help's
Notifications topic says Settings shows whether the records are in place
and re-checks them. The button sits in the page head rather than in the
box head: box heads hold a note, a tag, a link or a filter form, and the
page head is where the domain page and Health put the same action.

outlines.json: settings "head" -> "head+actions". check.py: 0 violations.

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

docs/assets/panel-redesign/panel/settings.html

@@ -71,6 +71,9 @@
         <h1 class="title is-3">Settings</h1>
         <p class="sp-lead">What holds for the whole instance, whoever is signed in. Your own name, e-mail and password are under <a href="account.html">Account</a>.</p>
       </div>
+      <div class="buttons">
+        <form method="post" action="#"><button type="submit" class="button"><i class="ti ti-refresh"></i>Re-check DNS</button></form>
+      </div>
     </div>
 
     <div class="columns">
@@ -101,7 +104,7 @@
 
       <div class="column is-6">
         <div class="box" id="notification-mail">
-          <div class="sp-box-head"><span class="sp-no">03</span><h2>Notification mail</h2><div class="sp-end">DNS records of the server's own name</div><a class="sp-help" href="help.html#notifications" title="What the panel sends and what makes it arrive"><i class="ti ti-help-circle"></i></a></div>
+          <div class="sp-box-head"><span class="sp-no">03</span><h2>Notification mail</h2><div class="sp-end">The server's own name · checked 3 min ago</div><a class="sp-help" href="help.html#notifications" title="What the panel sends and what makes it arrive"><i class="ti ti-help-circle"></i></a></div>
 
           <details class="sp-record">
             <summary class="sp-record-head"><h3>DKIM</h3><span class="tag is-success is-light">published</span><small>Not a secret · selector <code>sp2026</code></small><span class="sp-record-toggle"><i class="ti ti-eye"></i><span>Show values</span><span>Hide values</span></span></summary>