feat: expose Updates in mobile queues (Closes #639)

frontend/index.html

@@ -861,6 +861,7 @@
     <div class="mobile-queue-list">
       <button data-mobile-queue="today" type="button"><span><strong>Today</strong><small>Planned work</small></span><span data-mobile-queue-count="today">0</span></button>
       <button data-mobile-queue="attention" type="button"><span><strong>Attention</strong><small>Needs a response</small></span><span data-mobile-queue-count="attention">0</span></button>
+      <button data-mobile-queue="update" type="button" aria-label="Updates, 0 unread conversations"><span><strong>Updates</strong><small>Unread conversations</small></span><span data-mobile-queue-count="update">0</span></button>
       <button data-mobile-queue="later" type="button"><span><strong>Later</strong><small>Deferred work</small></span><span data-mobile-queue-count="later">0</span></button>
       <button data-mobile-queue="draft" type="button"><span><strong>Drafts</strong><small>Unfiled captures</small></span><span data-mobile-queue-count="draft">0</span></button>
     </div>

frontend/mobile-task-dock.js

@@ -95,12 +95,17 @@
   }
 
   function updateQueues(counts) {
-    const names = ['today', 'attention', 'later', 'draft'];
+    const names = ['today', 'attention', 'update', 'later', 'draft'];
     const normalized = Object.fromEntries(names.map(name => [name, Math.max(0, Number(counts?.[name]) || 0)]));
-    const total = names.reduce((sum, name) => sum + normalized[name], 0);
+    // Updates are already represented by the Attention destination, so keep
+    // the dock aggregate non-overlapping while exposing the useful drill-down.
+    const total = ['today', 'attention', 'later', 'draft'].reduce((sum, name) => sum + normalized[name], 0);
     Object.entries(options.queueCounts || {}).forEach(([name, element]) => {
       element.textContent = String(normalized[name] || 0);
     });
+    options.queueRows?.update?.setAttribute(
+      'aria-label', 'Updates, ' + normalized.update + ' unread conversations'
+    );
     if (options.queueBadge) {
       options.queueBadge.textContent = String(total);
       options.queueBadge.hidden = total === 0;