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>

src/gitea_proxy.py

@@ -4,7 +4,7 @@ import re
 import shlex
 from contextlib import asynccontextmanager
 from typing import Any
-from urllib.parse import urljoin, urlsplit
+from urllib.parse import quote, urljoin, urlsplit
 
 import httpx
 
@@ -916,6 +916,14 @@ def _gitea_api_path(value: Any) -> str:
     return parsed.path[len(prefix):] + (("?" + parsed.query) if parsed.query else "")
 
 
+async def _notification_subscription(repository: str, number: str) -> dict:
+    try:
+        value = await fetch(f"repos/{repository}/issues/{number}/subscriptions/check")
+    except Exception:
+        return {}
+    return value if isinstance(value, dict) else {}
+
+
 async def notification_detail(thread_id: int) -> dict:
     thread = await fetch(f"notifications/threads/{thread_id}")
     if not isinstance(thread, dict):
@@ -940,18 +948,20 @@ async def notification_detail(thread_id: int) -> dict:
     )
     if supported_conversation:
         assert conversation_match is not None
-        subject_detail, comment, conversation = await asyncio.gather(
+        subject_detail, comment, conversation, subscription = await asyncio.gather(
             fetch(subject_path),
             fetch(comment_path) if comment_path else asyncio.sleep(0, result={}),
             issue_conversation_page(
                 conversation_match.group(1), int(conversation_match.group(3))
             ),
+            _notification_subscription(conversation_match.group(1), conversation_match.group(3)),
         )
     else:
-        subject_detail, comment, conversation = await asyncio.gather(
+        subject_detail, comment, conversation, subscription = await asyncio.gather(
             fetch(subject_path) if subject_path else asyncio.sleep(0, result={}),
             fetch(comment_path) if comment_path else asyncio.sleep(0, result={}),
             asyncio.sleep(0, result={"comments": [], "page": 1, "older_page": None, "total": 0}),
+            asyncio.sleep(0, result={}),
         )
     subject_detail = subject_detail if isinstance(subject_detail, dict) else {}
     comment = comment if isinstance(comment, dict) else {}
@@ -1012,6 +1022,12 @@ async def notification_detail(thread_id: int) -> dict:
             and comment_match
             and comment_match.group(1) == repository_name
         ),
+        "mute_supported": bool(
+            supported_conversation
+            and isinstance(subscription, dict)
+            and subscription.get("subscribed") is True
+            and subscription.get("ignored") is not True
+        ),
         "conversation": conversation,
     }
 
@@ -1058,6 +1074,21 @@ async def notification_conversation_target(thread_id: int) -> tuple[str, int]:
     return match.group(1), int(match.group(3))
 
 
+async def mute_notification(thread_id: int) -> dict:
+    """Unsubscribe the current operator from the trusted notification conversation."""
+    repository, number = await notification_conversation_target(thread_id)
+    user = await fetch("user")
+    login = user.get("login") if isinstance(user, dict) else None
+    if not isinstance(login, str) or not login:
+        raise ValueError("Gitea did not identify the current operator")
+    response = await _get_client().delete(
+        f"/api/v1/repos/{repository}/issues/{number}/subscriptions/{quote(login, safe='')}",
+        headers=_auth(),
+    )
+    response.raise_for_status()
+    return {"id": thread_id, "repository": repository, "number": number, "muted": True}
+
+
 async def reply_to_notification(thread_id: int, body: str) -> dict:
     thread = await fetch(f"notifications/threads/{thread_id}")
     if not isinstance(thread, dict):

src/main.py

@@ -3685,6 +3685,43 @@ async def unread_notification(thread_id: int = PathParam(gt=0)) -> JSONResponse:
     return JSONResponse({"id": thread_id, "status": "unread"})
 
 
+@app.post("/api/v1/notifications/{thread_id}/mute")
+async def mute_notification(thread_id: int = PathParam(gt=0)) -> JSONResponse:
+    try:
+        await asyncio.wait_for(
+            gitea_proxy.mute_notification(thread_id),
+            timeout=NOTIFICATION_MUTATION_TIMEOUT_SECONDS,
+        )
+    except TimeoutError:
+        return JSONResponse(
+            {"error": "Muting future updates timed out. Please retry."},
+            status_code=503,
+            headers={"Retry-After": "1"},
+        )
+    except Exception:
+        return JSONResponse(
+            {"error": "Future updates could not be muted. Please retry."},
+            status_code=503,
+        )
+    try:
+        await asyncio.wait_for(
+            mark_notification_read(thread_id),
+            timeout=NOTIFICATION_MUTATION_TIMEOUT_SECONDS,
+        )
+    except Exception:
+        return JSONResponse(
+            {
+                "id": thread_id,
+                "muted": True,
+                "status": "unread",
+                "error": "Future updates are muted; current item is still unread. Retry mark read & next.",
+            },
+            status_code=409,
+        )
+    await _remove_notifications_from_live_snapshot([thread_id])
+    return JSONResponse({"id": thread_id, "muted": True, "status": "read"})
+
+
 @app.patch("/api/v1/notifications/{thread_id}/later")
 async def defer_notification(
     payload: NotificationLaterRequest,

tests/test_gitea_notifications.py

@@ -254,6 +254,8 @@ async def test_notification_detail_loads_subject_and_latest_comment_for_inbox_re
                 "number": 7, "state": "open", "assignees": [],
                 "body": "Deploy fails after **three** retries.",
             })
+        if request.url.path.endswith("/issues/7/subscriptions/check"):
+            return httpx.Response(200, json={"subscribed": True, "ignored": False})
         if request.url.path.endswith("/issues/comments/9"):
             return httpx.Response(200, json={
                 "id": 9,
@@ -283,6 +285,7 @@ async def test_notification_detail_loads_subject_and_latest_comment_for_inbox_re
         "http://127.0.0.1:3000/api/v1/repos/stackchain/api/issues/7",
         "http://127.0.0.1:3000/api/v1/repos/stackchain/api/issues/comments/9",
         "http://127.0.0.1:3000/api/v1/repos/stackchain/api/issues/7/comments?limit=20&page=1",
+        "http://127.0.0.1:3000/api/v1/repos/stackchain/api/issues/7/subscriptions/check",
     ]
     assert result == {
         "id": 42,
@@ -300,6 +303,7 @@ async def test_notification_detail_loads_subject_and_latest_comment_for_inbox_re
         },
         "issue": {"number": 7, "assignees": [], "claimable": True},
         "acknowledge_supported": True,
+        "mute_supported": True,
         "conversation": {
             "comments": [{
                 "id": 9,
@@ -398,3 +402,37 @@ async def test_reply_to_notification_posts_to_its_issue_conversation(subject_kin
         "created_at": "2026-08-07T19:00:00Z",
         "url": "https://forge.example/stackchain/api/issues/7#issuecomment-91",
     }
+
+
+@pytest.mark.anyio
+async def test_mute_notification_unsubscribes_current_user_from_trusted_thread_target():
+    requests = []
+
+    def upstream(request):
+        requests.append((request.method, request.url.path))
+        if request.url.path.endswith("/notifications/threads/42"):
+            return httpx.Response(200, json={
+                "repository": {"full_name": "stackchain/api"},
+                "subject": {
+                    "type": "Pull",
+                    "url": "http://127.0.0.1:3000/api/v1/repos/stackchain/api/pulls/7",
+                },
+            })
+        if request.url.path.endswith("/user"):
+            return httpx.Response(200, json={"login": "timmy"})
+        if request.method == "DELETE":
+            return httpx.Response(204)
+        return httpx.Response(404)
+
+    gitea_proxy.start_client(transport=httpx.MockTransport(upstream))
+    try:
+        result = await gitea_proxy.mute_notification(42)
+    finally:
+        await gitea_proxy.stop_client()
+
+    assert result == {"id": 42, "repository": "stackchain/api", "number": 7, "muted": True}
+    assert requests == [
+        ("GET", "/api/v1/notifications/threads/42"),
+        ("GET", "/api/v1/user"),
+        ("DELETE", "/api/v1/repos/stackchain/api/issues/7/subscriptions/timmy"),
+    ]

tests/test_my_work.py

@@ -4958,6 +4958,21 @@ async def test_mobile_update_sheet_wires_touch_safe_online_acknowledge_and_next(
     assert '.update-sheet-actions #acknowledge-update-next { min-height:44px;' in html
 
 
+@pytest.mark.anyio
+async def test_mobile_update_sheet_mutes_future_updates_and_advances_only_on_read_success():
+    html = await dashboard()
+
+    assert 'id="mute-update-next" type="button" hidden' in html
+    assert ">Mute future updates &amp; next</button>" in html
+    assert "qs('#mute-update-next').hidden = !detail.mute_supported;" in html
+    assert "async function muteNotification(notificationId)" in html
+    assert "'/mute', { method: 'POST'" in html
+    assert "notificationReader.acceptReadAndNext(lastMyWork, item)" in html
+    assert "Future updates are muted; current item is still unread" in html
+    assert "qs('#mute-update-next').disabled = offline;" in html
+    assert ".update-sheet-actions #mute-update-next" in html
+
+
 def test_notification_reader_keeps_current_update_retryable_when_detail_load_fails():
     script = f"""
 const buildMyWork = require({json.dumps(str(MY_WORK))});

tests/test_notification_read.py

@@ -215,6 +215,34 @@ async def test_mark_notification_unread_api_is_bounded_and_never_cacheable(monke
     assert restored == [42]
 
 
+@pytest.mark.anyio
+async def test_mute_notification_then_marks_read_and_reports_partial_success(monkeypatch):
+    calls = []
+
+    async def mute(thread_id):
+        calls.append(("mute", thread_id))
+        return {"id": thread_id, "muted": True}
+
+    async def fail_read(thread_id):
+        calls.append(("read", thread_id))
+        raise httpx.HTTPError("unavailable")
+
+    monkeypatch.setattr(main.gitea_proxy, "mute_notification", mute, raising=False)
+    monkeypatch.setattr(main, "mark_notification_read", fail_read)
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+        response = await client.post("/api/v1/notifications/42/mute")
+
+    assert response.status_code == 409
+    assert response.json() == {
+        "id": 42,
+        "muted": True,
+        "status": "unread",
+        "error": "Future updates are muted; current item is still unread. Retry mark read & next.",
+    }
+    assert calls == [("mute", 42), ("read", 42)]
+
+
 @pytest.mark.anyio
 async def test_acknowledge_notification_api_confirms_reaction_and_removes_snapshot_item(monkeypatch):
     calls = []