README.md

@@ -210,11 +210,15 @@ Users can explicitly enable **Keep My Work available offline**. Each healthy liv
 refresh then stores a seven-day, versioned snapshot containing only the signed-in
 user identity and queue-card metadata for issues, pull requests, unread updates,
 and pagination totals. For each opened Today issue or pull request, Stackchain additionally retains an allowlisted detail record with its body and
-newest 20 comments. This account-bound cache is limited to ten records; diffs,
+newest 20 comments. A previously opened unread update is retained by notification
+identity with allowlisted subject context and its newest 20 conversation messages.
+This account-bound cache is limited to ten records across all detail kinds; diffs,
 credentials, repository catalogs, events, and complete API responses are excluded.
 A cold offline launch labels the saved time. Cached Today details open in the existing
 phone sheet, where comments can enter the account-bound durable outbox; planning,
 assignment, review, merge, and close controls remain disabled until reconnection.
+Cached unread updates use the same phone conversation sheet and replies enter the
+account-bound durable outbox, while mark read, ownership, deferral, and older-message loading remain disabled until reconnection.
 Cards without a saved detail explain that reconnection is required. **Clear offline
 work data** deletes both stores, and opting out or seven-day expiry deletes them
 automatically.

frontend/dashboard.js

@@ -429,6 +429,7 @@
       qs('#send-update-reply').disabled = false;
       qs('#update-ownership-action').hidden = true;
       qs('#retry-update-load').hidden = true;
+      setOfflineUpdateControls(false);
       qs('#keep-update-unread').focus();
     },
     onDetail: detail => {
@@ -437,7 +438,14 @@
       qs('#update-subject-state').textContent = detail.state || '';
       qs('#update-subject-body').innerHTML = renderMarkdown(detail.subject_body || 'No subject context was provided.');
       qs('#open-update-gitea').href = detail.url || selectedUpdate?.url || '#';
-      updateOwnership.open(detail, selectedUpdate);
+      if (offlineWorkMode) {
+        setOfflineUpdateControls(true);
+      } else {
+        updateOwnership.open(detail, selectedUpdate);
+        if (offlineWorkStore.enabled() && confirmedOwnerLogin && selectedUpdate) {
+          offlineWorkStore.saveDetail(confirmedOwnerLogin, selectedUpdate, detail);
+        }
+      }
       qs('#retry-update-load').hidden = true;
     },
     onConversation: renderUpdateConversation,
@@ -470,7 +478,8 @@
       const offlineLogin = planningOwnerLogin || confirmedOwnerLogin ||
         String(offlineWorkStore.load()?.user?.login || '').trim();
       const savedDetail = offlineWorkStore.loadDetail(offlineLogin, item);
-      if (!todayWork.contains(item) || !savedDetail) {
+      const savedUpdate = item.kind === 'update' && item.has_update;
+      if ((!savedUpdate && !todayWork.contains(item)) || !savedDetail) {
         qs('#my-work-action-status').textContent = 'Details not saved—reconnect to open this item.';
         return;
       }
@@ -480,6 +489,14 @@
       } else if (item.kind === 'pull' && !item.is_review) {
         pullTrigger = trigger;
         openPullSheet(item, trigger, savedDetail);
+      } else if (savedUpdate) {
+        updateTrigger = trigger;
+        notificationReader.open(item, savedDetail).then(opened => {
+          if (opened && selectedUpdate === item) {
+            qs('#update-sheet-status').textContent = 'Offline update · saved ' + fmt(savedDetail.saved_at) +
+              ' · replies queue for sync. Reconnect to mark read, take ownership, defer, or load older messages.';
+          }
+        });
       } else {
         qs('#my-work-action-status').textContent = 'Details not saved—reconnect to open this item.';
       }
@@ -634,6 +651,13 @@
     }
   }
 
+  function setOfflineUpdateControls(offline) {
+    qs('#mark-update-read-next').disabled = offline;
+    qs('#update-ownership-action').disabled = offline;
+    qs('#load-older-update-comments').disabled = offline;
+    qs('#update-sheet .detail-defer').inert = offline;
+  }
+
   function renderContextSnapshot(data) {
     liveMode = true;
     hasContextSnapshot = true;
@@ -959,7 +983,7 @@
         const item = lastMyWork[Number(button.dataset.updateIndex)];
         if (!item) return;
         updateTrigger = button;
-        workRoute.open({ ...item, kind:'update' });
+        openRoutedWork(item, button);
       });
     });
     document.querySelectorAll('[data-notification-id]').forEach(button => {
@@ -3018,6 +3042,10 @@
     offlineWorkMode = value;
     ['#find-work', '#start-work-session', '#load-more-work', '#load-more-notifications', '#bulk-mark-read']
       .forEach(selector => { const button = qs(selector); if (button) button.disabled = value; });
+    if (value) {
+      document.querySelectorAll('[data-notification-id], [data-later-preset], [data-today-add]')
+        .forEach(button => { button.disabled = true; });
+    }
   }
   function hydrateOfflineWork(mode = 'offline') {
     const saved = offlineWorkStore.load();

frontend/my-work.js

@@ -288,14 +288,16 @@ function createNotificationReader({
   let loadVersion = 0;
   let marking = false;
   let conversationPager = null;
+  let offlineHydrated = false;
 
-  async function open(item) {
+  async function open(item, savedDetail = null) {
     selected = item;
+    offlineHydrated = Boolean(savedDetail && !Array.isArray(savedDetail));
     const version = ++loadVersion;
     onOpen(item);
     onStatus('Loading update…');
     try {
-      const detail = await load(item.notification_id);
+      const detail = offlineHydrated ? savedDetail : await load(item.notification_id);
       if (selected !== item || version !== loadVersion) return false;
       onDetail(detail);
       if (createPager && loadConversation && detail.conversation) {
@@ -324,7 +326,7 @@ function createNotificationReader({
       return true;
     },
     async loadOlder() {
-      if (!conversationPager || !selected) return false;
+      if (!conversationPager || !selected || offlineHydrated) return false;
       const pager = conversationPager;
       const version = loadVersion;
       onStatus('Loading older messages…');
@@ -342,7 +344,7 @@ function createNotificationReader({
       }
     },
     async markReadAndNext(items) {
-      if (!selected || marking) return false;
+      if (!selected || marking || offlineHydrated) return false;
       const current = selected;
       marking = true;
       onStatus('Marking update read…');

frontend/offline-work.js

@@ -19,6 +19,7 @@
   ];
   const DETAIL_FIELDS = [
     'title', 'body', 'state', 'labels', 'assignees', 'author', 'url', 'due_date', 'milestone',
+    'id', 'repository', 'subject_type', 'subject_body',
   ];
   const COMMENT_FIELDS = ['id', 'author', 'body', 'created_at', 'updated_at', 'url'];
 
@@ -48,6 +49,10 @@
     }
 
     function detailKey(item) {
+      if (item?.kind === 'update') {
+        const notificationId = Number(item?.notification_id || 0);
+        return Number.isInteger(notificationId) && notificationId > 0 ? 'update:' + notificationId : '';
+      }
       const kind = item?.kind === 'pull' ? 'pull' : item?.kind === 'issue' ? 'issue' : '';
       const repository = String(item?.repository || '');
       const number = Number(item?.number || 0);

frontend/service-worker.js

@@ -1,6 +1,6 @@
 const BASE = new URL('./', self.location.href).pathname;
 importScripts(BASE + 'static/background-issue-sync.js');
-const CACHE = 'stackchain-dashboard-shell-v39';
+const CACHE = 'stackchain-dashboard-shell-v40';
 const OUTAGE_STATUSES = new Set([500, 502, 503, 504]);
 const SHELL = [
   BASE,

tests/test_markdown_renderer.py

@@ -137,4 +137,4 @@ def test_markdown_work_bodies_are_mobile_safe_block_containers():
     assert ".markdown-content { min-width:0; max-width:100%; overflow-wrap:anywhere;" in css
     assert ".markdown-content pre { max-width:100%; overflow-x:auto;" in css
     assert ".markdown-content a { min-height:44px;" in css
-    assert "stackchain-dashboard-shell-v39" in worker
+    assert "stackchain-dashboard-shell-v40" in worker

tests/test_mobile_composer_integration.py

@@ -35,4 +35,4 @@ def test_offline_shell_contains_every_local_dashboard_runtime_asset():
     shell_assets = set(re.findall(r"BASE \+ '([^']+)'", worker.split("async function sessionCsrf", 1)[0]))
 
     assert local_assets <= shell_assets, f"Offline shell is missing: {sorted(local_assets - shell_assets)}"
-    assert "stackchain-dashboard-shell-v39" in worker
+    assert "stackchain-dashboard-shell-v40" in worker

tests/test_my_work.py

@@ -2359,6 +2359,53 @@ reader.open(firstItem).then(async () => {{
     assert output["states"] == [[41], [90]]
 
 
+def test_notification_reader_hydrates_saved_conversation_without_server_state_actions():
+    script = f"""
+const build = require({json.dumps(str(MY_WORK))});
+const createPager = require({json.dumps(str(CONVERSATION))});
+const item = {{kind:'update', notification_id:42, has_update:true}};
+const saved = {{
+  id:42, title:'Saved update', saved_at:'2026-08-07T12:00:00Z',
+  conversation:{{comments:[{{id:41, body:'Cached'}}], page:2, older_page:1, total:21}},
+}};
+let detailLoads = 0;
+let conversationLoads = 0;
+let markReads = 0;
+const details = [];
+const conversations = [];
+const reader = build.createNotificationReader({{
+  load: async () => {{ detailLoads += 1; throw new Error('network must not run'); }},
+  loadConversation: async () => {{ conversationLoads += 1; return {{}}; }},
+  markRead: async () => {{ markReads += 1; }}, createPager,
+  onOpen: () => {{}}, onDetail: detail => details.push(detail.title),
+  onConversation: state => conversations.push(state.comments.map(comment => comment.id)),
+  onItems: () => {{}}, onStatus: () => {{}}, onClose: () => {{}},
+}});
+(async () => {{
+  const opened = await reader.open(item, saved);
+  const older = await reader.loadOlder();
+  const marked = await reader.markReadAndNext([item]);
+  process.stdout.write(JSON.stringify({{
+    opened, older, marked, detailLoads, conversationLoads, markReads, details, conversations,
+  }}));
+}})();
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "opened": True,
+        "older": False,
+        "marked": False,
+        "detailLoads": 0,
+        "conversationLoads": 0,
+        "markReads": 0,
+        "details": ["Saved update"],
+        "conversations": [[41]],
+    }
+
+
 def test_notification_reader_appends_a_confirmed_reply_exactly_once():
     script = f"""
 const build = require({json.dumps(str(MY_WORK))});

tests/test_offline_work.py

@@ -117,6 +117,43 @@ process.stdout.write(JSON.stringify({
     assert "private diff" not in result["raw"]
 
 
+def test_unread_update_conversation_detail_is_private_bounded_and_account_bound():
+    result = run_scenario("""
+const store = createOfflineWorkStore({storage, now:() => new Date('2026-08-07T12:00:00Z')});
+store.setEnabled(true);
+const update = {kind:'update', notification_id:42};
+store.saveDetail('timmy', update, {
+  id:42, repository:'stackchain/dashboard', title:'Deployment blocked',
+  subject_type:'Issue', state:'open', subject_body:'Safe subject context',
+  url:'https://forge.example/issues/8#issuecomment-9', token:'secret',
+  issue:{number:8, assignees:[], claimable:true}, files:[{patch:'private diff'}],
+  conversation:{
+    comments:Array.from({length:25}, (_, index) => ({
+      id:index + 1, author:'alexander', body:'Message ' + (index + 1),
+      created_at:'2026-08-07T11:00:00Z', token:'comment-secret',
+    })),
+    page:1, older_page:2, total:40,
+  },
+});
+const raw = [...values.values()].join(' ');
+process.stdout.write(JSON.stringify({
+  loaded:store.loadDetail('timmy', update),
+  wrongUser:store.loadDetail('alexander', update),
+  raw,
+}));
+""")
+
+    assert result["wrongUser"] is None
+    assert result["loaded"]["title"] == "Deployment blocked"
+    assert result["loaded"]["subject_body"] == "Safe subject context"
+    assert result["loaded"]["subject_type"] == "Issue"
+    assert len(result["loaded"]["conversation"]["comments"]) == 20
+    assert result["loaded"]["conversation"]["comments"][0]["body"] == "Message 6"
+    assert result["loaded"]["saved_at"] == "2026-08-07T12:00:00.000Z"
+    assert "secret" not in result["raw"]
+    assert "private diff" not in result["raw"]
+
+
 @pytest.mark.anyio
 async def test_dashboard_offers_private_offline_work_controls_and_read_only_hydration():
     html = await dashboard()
@@ -165,3 +202,19 @@ async def test_saved_today_details_open_offline_without_enabling_server_state_ac
     assert "qs('#issue-planning').inert = false;" in html
     assert "qs('#pull-review').inert = false;" in html
     assert "confirmedOwnerLogin = String(saved.user?.login || '').trim();" in html
+
+
+@pytest.mark.anyio
+async def test_saved_unread_update_opens_offline_with_reply_only_controls():
+    html = await dashboard()
+
+    assert "notificationReader.open(item, savedDetail)" in html
+    assert "openRoutedWork(item, button);" in html
+    assert "offlineWorkStore.saveDetail(confirmedOwnerLogin, selectedUpdate, detail)" in html
+    assert "Offline update · saved " in html
+    assert "setOfflineUpdateControls(true)" in html
+    assert "qs('#mark-update-read-next').disabled = offline;" in html
+    assert "qs('#update-ownership-action').disabled = offline;" in html
+    assert "qs('#load-older-update-comments').disabled = offline;" in html
+    assert "document.querySelectorAll('[data-notification-id], [data-later-preset], [data-today-add]')" in html
+    assert "Reconnect to mark read, take ownership, defer, or load older messages." in html

tests/test_readme.py

@@ -41,3 +41,11 @@ def test_readme_documents_bounded_offline_today_details_and_safe_actions():
     assert "newest 20 comments" in text
     assert "comments can enter the account-bound durable outbox" in text
     assert "planning, assignment, review, merge, and close controls remain disabled" in text
+
+
+def test_readme_documents_offline_unread_update_conversations_and_boundaries():
+    text = " ".join(README.read_text().split())
+
+    assert "previously opened unread update" in text
+    assert "replies enter the account-bound durable outbox" in text
+    assert "mark read, ownership, deferral, and older-message loading remain disabled" in text

tests/test_service_worker.py

@@ -97,7 +97,7 @@ async function dispatchNotificationClick(route) {{
 def test_share_target_sign_in_fix_ships_in_a_new_shell_cache():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v39" in source
+    assert "stackchain-dashboard-shell-v40" in source
     assert "BASE + 'static/dashboard.css'" in source
     assert "BASE + 'static/dashboard.js'" in source
     assert "BASE + 'static/install-app.js'" in source
@@ -106,14 +106,14 @@ def test_share_target_sign_in_fix_ships_in_a_new_shell_cache():
 def test_mobile_search_viewport_ships_in_a_new_offline_shell():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v39" in source
+    assert "stackchain-dashboard-shell-v40" in source
     assert "BASE + 'static/mobile-search-viewport.js'" in source
 
 
 def test_update_ownership_flow_ships_atomically_in_a_new_offline_shell():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v39" in source
+    assert "stackchain-dashboard-shell-v40" in source
     assert "BASE + 'static/update-ownership.js'" in source