feat: review and revoke active devices (#325)

frontend/index.html

@@ -18,6 +18,7 @@
     <div class="app-menu-panel">
       <button id="refresh">Refresh</button>
       <button id="open-palette">Command</button>
+      <button id="active-devices" type="button">Active devices</button>
       <button id="sign-out" type="button">Sign out &amp; clear this device</button>
       <button id="sign-out-all" type="button">Sign out all devices</button>
       <span class="small muted" id="clock"></span>
@@ -28,6 +29,17 @@
   Offline · live Gitea data is unavailable. Saved drafts remain available on this device.
 </div>
 
+<div id="active-devices-sheet" class="active-devices-sheet" hidden>
+  <section class="active-devices-panel" role="dialog" aria-modal="true" aria-label="Active devices">
+    <div class="active-devices-header">
+      <div><h2>Active devices</h2><p class="small muted">Review signed-in devices and remove access you no longer trust.</p></div>
+      <button id="close-active-devices" type="button" aria-label="Close active devices">Close</button>
+    </div>
+    <div id="active-devices-status" class="small" role="status" aria-live="polite"></div>
+    <div id="active-devices-list" class="active-devices-list"></div>
+  </section>
+</div>
+
 <main>
   <section class="panel my-work" id="my-work" tabindex="-1">
     <div class="my-work-header">