Added a theme selector

frontend/templates/admin.html

@@ -98,17 +98,27 @@
           <label class="checkbox-label">
             <input name="smtp_use_tls" type="checkbox" /> Use STARTTLS
           </label>
+          <button type="submit">Save SMTP settings</button>
           <button id="smtp-test-button" type="button">Send validation email</button>
           <p id="smtp-status" class="status" role="status"></p>
-                    <button type="submit">Save SMTP settings</button>
 
         </form>
       </section>
+      <section class="link-item settings-panel">
+        <h2>Available themes</h2>
+        <p>Choose the themes visitors may use.</p>
+        <form id="themes-form">
+          <div id="theme-options" class="theme-options" aria-live="polite">Loading themes...</div>
+          <button type="submit">Save themes</button>
+          <p id="theme-status" class="status" role="status"></p>
+        </form>
+      </section>
       </div>
     </main>
     <footer class="site-footer">Copyright © 2026 Olaf Kolkman  · <a href="https://git.kolkman.org/olaf/Link-Log">git.kolkman.org/LinkLog</a></footer>
     <script src="/static/auth-header.js?v=3"></script>
     <script src="/static/logout.js?v=2"></script>
+    <script src="/static/theme.js?v=1"></script>
     <script src="/static/admin.js?v=5"></script>
   </body>
 </html>