feat: mute future updates during triage (Closes #751)

frontend/dashboard.css

@@ -401,6 +401,7 @@ textarea { resize: vertical; min-height: 120px; }
 .update-ownership-actions button { min-width:0; width:100%; }
 .update-sheet-actions button, .update-sheet-actions a { min-height:44px; display:flex; align-items:center; justify-content:center; }
 .update-sheet-actions #acknowledge-update-next { min-height:44px; width:100%; }
+.update-sheet-actions #mute-update-next { min-height:44px; width:100%; }
 .update-sheet-actions a { border:1px solid #60a5fa; border-radius:10px; font-weight:700; }
 .update-retry { min-height:44px; width:100%; margin-top:10px; }
 .issue-sheet { position:fixed; inset:0; z-index:56; display:none; justify-content:flex-end; background:rgba(5,12,21,.72); backdrop-filter:blur(4px); }

frontend/dashboard.js

@@ -719,6 +719,18 @@
     return payload;
   }
 
+  async function muteNotification(notificationId) {
+    const response = await fetch('api/v1/notifications/' + encodeURIComponent(notificationId) +
+      '/mute', { method: 'POST', headers: { Accept: 'application/json' } });
+    const payload = await response.json().catch(() => ({}));
+    if (!response.ok) {
+      const error = new Error(payload.error || 'Muting future updates failed.');
+      error.muted = payload.muted === true;
+      throw error;
+    }
+    return payload;
+  }
+
   async function markNotificationsRead(ids) {
     const response = await fetch('api/v1/notifications/read', {
       method: 'PATCH',
@@ -927,6 +939,7 @@
       qs('#send-update-reply').disabled = false;
       qs('#send-update-reply-read-next').disabled = false;
       qs('#acknowledge-update-next').hidden = true;
+      qs('#mute-update-next').hidden = true;
       qs('#update-ownership-action').hidden = true;
       qs('#update-ownership-start').hidden = true;
       qs('#create-update-follow-up').hidden = true;
@@ -942,6 +955,7 @@
       qs('#update-subject-body').innerHTML = renderMarkdown(detail.subject_body || 'No subject context was provided.');
       qs('#open-update-gitea').href = detail.url || selectedUpdate?.url || '#';
       qs('#acknowledge-update-next').hidden = !detail.acknowledge_supported;
+      qs('#mute-update-next').hidden = !detail.mute_supported;
       qs('#create-update-follow-up').hidden = !['Issue', 'Pull'].includes(detail.subject_type);
       if (offlineWorkMode) {
         setOfflineUpdateControls(true);
@@ -2218,6 +2232,7 @@
     qs('#mark-update-read-next').disabled = false;
     qs('#mark-update-read-next').textContent = offline ? 'Queue read & next' : 'Mark read & next';
     qs('#acknowledge-update-next').disabled = offline;
+    qs('#mute-update-next').disabled = offline;
     qs('#update-ownership-action').disabled = offline;
     qs('#update-ownership-start').disabled = offline;
     qs('#load-older-update-comments').disabled = offline;
@@ -5593,6 +5608,27 @@
       button.disabled = offlineWorkMode;
     }
   });
+  qs('#mute-update-next').addEventListener('click', async () => {
+    if (!selectedUpdate || offlineWorkMode) return;
+    const button = qs('#mute-update-next');
+    const item = selectedUpdate;
+    button.disabled = true;
+    qs('#update-sheet-status').textContent = 'Muting future updates…';
+    try {
+      await muteNotification(item.notification_id);
+      const result = await notificationReader.acceptReadAndNext(lastMyWork, item);
+      if (result && updateTriage.active()) updateTriage.acceptCompleted();
+    } catch (error) {
+      qs('#update-sheet-status').textContent = error.muted ?
+        'Future updates are muted; current item is still unread. Retry mark read & next.' : error.message;
+      if (error.muted) {
+        button.hidden = true;
+        qs('#mark-update-read-next').focus();
+      }
+    } finally {
+      button.disabled = offlineWorkMode;
+    }
+  });
   qs('#undo-notification').addEventListener('click', async () => {
     const button = qs('#undo-notification');
     button.disabled = true;

frontend/index.html

@@ -794,6 +794,7 @@
       </div>
       <button class="share-work-route" type="button">Share</button>
       <button id="acknowledge-update-next" type="button" hidden aria-label="Acknowledge and open next update">👍 Acknowledge &amp; next</button>
+      <button id="mute-update-next" type="button" hidden>Mute future updates &amp; next</button>
       <button id="create-update-follow-up" type="button" hidden>Create follow-up</button>
       <button id="mark-update-read-next" type="button">Mark read &amp; next</button>
       <a id="open-update-gitea" href="#" target="_blank" rel="noopener noreferrer">Open in Gitea</a>