panel: show the subject as text, not as its MIME encoding

A non-Latin subject arrives as RFC 2047 encoded-words, which the send-log
printed verbatim: unreadable, and one unbreakable run wide enough to push the
Status column out of its card. Decode at journal time (UTF-8/ASCII; exotic
charsets keep the raw header) and cap at 200 characters, then clip the column
to one line with the full text in the tooltip so no subject can widen the row.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

internal/web/templates/domain_detail.html

@@ -180,21 +180,15 @@
   domain (<em>wildcard</em>) or only from a fixed list of addresses.</p>
 
   {{if .Apps}}
-  <table>
-    <thead>
-      <tr><th>Login</th><th>Mode</th><th>Addresses</th><th></th></tr>
-    </thead>
-    <tbody>
-      {{range .Apps}}
-      <tr>
-        <td class="code">{{.Login}}</td>
-        <td>{{if eq .AddressMode $.Wildcard}}Any address (@{{$.Domain.Name}}){{else}}List{{end}}</td>
-        <td class="muted">
-          {{if eq .AddressMode $.Wildcard}}*@{{$.Domain.Name}}{{else}}
-            {{range $i, $a := .Addresses}}{{if $i}}, {{end}}{{$a}}{{end}}
-          {{end}}
-        </td>
-        <td class="actions">
+  <ul class="apps">
+    {{range .Apps}}
+      <li class="app">
+        <p class="app-login">{{.Login}}</p>
+        <p class="app-addr muted">
+          {{if eq .AddressMode $.Wildcard}}Any address of the domain — *@{{$.Domain.Name}}
+          {{else}}Fixed list — {{range $i, $a := .Addresses}}{{if $i}}, {{end}}{{$a}}{{end}}{{end}}
+        </p>
+        <div class="actions">
           <details>
             <summary>Edit mode</summary>
             <form method="post" action="/applications/{{.ID}}/mode">
@@ -238,11 +232,10 @@
                 data-confirm="Delete application {{.Login}}? Its credentials stop working immediately.">
             <button type="submit" class="danger">Delete</button>
           </form>
-        </td>
-      </tr>
-      {{end}}
-    </tbody>
-  </table>
+        </div>
+      </li>
+    {{end}}
+  </ul>
   {{else}}
   <p class="muted">No applications yet. Add one above to get started.</p>
   {{end}}