perf: keep session validation off event loop (#275)

Closes #270

README.md

@@ -16,38 +16,96 @@ python3 -m pip install -r requirements.txt
 Point the dashboard at the Gitea server root (without `/api/v1`) and provide a
 token that can read dashboard data, update the authenticated user's notification
 threads, create and self-assign issues, discover, claim, and release issue assignments,
-set or clear due dates on assigned issues, create issue comments, close assigned issues,
+list repository labels and open milestones, set or clear due dates on assigned issues, create issue comments, close assigned issues,
 inspect/comment on assigned pull
 requests, merge assigned pull requests, and submit pull-request reviews.
 Pull-request replies and mobile My Work issue and PR comments use Gitea's
 issue-comment API; mobile issue capture requires issue
-creation and assignment permission. Issue capture and authored mobile actions (issue
+creation and assignment permission. The New issue sheet can optionally select an open
+repository milestone and due date; the dashboard validates both and sends them with
+self-assignment in the single create request, so planned work appears in its release
+lane immediately. Issue capture and authored mobile actions (issue
 comments, pull-request comments, notification replies, and reviews) persist per-draft
 idempotency keys, so retrying after a timeout, reload, process restart, or handoff to
 another worker replays a confirmed result instead of posting duplicate content. Results
 are coordinated through a bounded SQLite ledger. Set `STACKCHAIN_STATE_DIR` to a
 persistent, writable service directory (or set `STACKCHAIN_IDEMPOTENCY_DB` to an explicit
-SQLite path); the local default is `.stackchain-state/idempotency.sqlite3`. Direct API callers should preserve the `Idempotency-Key`
-header with the unchanged route and payload until a `201` response is confirmed. Closing an assigned issue, native Comment,
+SQLite path); the local default is `.stackchain-state/idempotency.sqlite3`. Ledger reads and
+writes run outside the request event loop, and lock admission is bounded to 100 ms by
+default. Tune it with `STACKCHAIN_IDEMPOTENCY_LOCK_TIMEOUT_SECONDS`; keep the value below
+route deadlines. Reservation contention returns retryable HTTP 503 with `Retry-After: 1`.
+If contention occurs after the upstream mutation, the dashboard fails closed with
+`Retry-After: 5` and asks the caller to verify the result before retrying. Direct API callers
+should preserve the `Idempotency-Key` header with the unchanged route and payload until a
+`201` response is confirmed. Closing an assigned issue, native Comment,
 Approve, and Request changes reviews, and assigned-PR merge require repository
 write permission. Native Comment, Approve, and Request changes reviews support
 head-scoped draft comments anchored to changed lines; the dashboard validates each
 comment path and submits the summary, decision, and inline comments in one review
 request. The dashboard rechecks the current pull-request head, CI success, draft
 state, and mergeability immediately before every merge.
-Serve the dashboard
-only to trusted users on its own origin; cross-origin API
-access is intentionally disabled. Then start the API and bundled frontend:
+Serve the dashboard only to trusted users on its own origin; cross-origin API
+access is intentionally disabled. Authentication defaults to fail-closed
+`operator` mode. It requires two independent secrets of at least 24 characters;
+missing, short, reused, or invalid configuration leaves `/healthz` available but
+returns HTTP 503 before any Gitea access. The access token is entered at `/login`;
+the browser receives only a short-lived signed session and CSRF proof. Generate
+both values in your secret manager (for example, `openssl rand -hex 32`) and inject
+them at runtime—never commit them:
 
 ```bash
 export GITEA_URL='https://forge.example.com'
 export GITEA_TOKEN='<read-notification-and-issue-write-token>'
+export STACKCHAIN_DASHBOARD_AUTH_MODE='operator'
+export STACKCHAIN_DASHBOARD_ACCESS_TOKEN='<operator-sign-in-secret>'
+export STACKCHAIN_DASHBOARD_SESSION_SECRET='<independent-cookie-signing-secret>'
+# Optional; defaults to STACKCHAIN_STATE_DIR/sessions.sqlite3.
+export STACKCHAIN_SESSION_DB='/var/lib/stackchain-dashboard/sessions.sqlite3'
+# Optional; defaults to eight hours.
+export STACKCHAIN_DASHBOARD_SESSION_TTL_SECONDS=28800
+# Optional sign-in throttle: five failures per five minutes, up to 10,000 sources.
+export STACKCHAIN_LOGIN_MAX_FAILURES=5
+export STACKCHAIN_LOGIN_WINDOW_SECONDS=300
+export STACKCHAIN_LOGIN_MAX_ENTRIES=10000
+# Optional; defaults to STACKCHAIN_STATE_DIR/login-attempts.sqlite3.
+export STACKCHAIN_LOGIN_ATTEMPT_DB='/var/lib/stackchain-dashboard/login-attempts.sqlite3'
+# Trust forwarding headers only from these immediate reverse-proxy networks.
+export STACKCHAIN_TRUSTED_PROXY_CIDRS='127.0.0.0/8'
 uvicorn src.main:app --host 127.0.0.1 --port 8000
 ```
 
-Open `http://127.0.0.1:8000/` for the dashboard. To verify the backend and its
-Gitea connection directly, request
-`http://127.0.0.1:8000/api/v1/context`; a successful response is JSON containing
+Sign-in failures are scoped to a hashed canonical client address and persisted across
+workers and restarts. Once the budget is exhausted, the server returns `429` with
+`Retry-After`; the mobile login form disables retries for that interval. Expired
+source records are pruned and the ledger is size-bounded. Keep its SQLite file on
+shared writable storage. `X-Forwarded-For` is ignored unless the immediate peer is
+inside `STACKCHAIN_TRUSTED_PROXY_CIDRS`; list only networks you operate. Without
+that setting, a reverse proxy is safely treated as one shared source.
+
+Each signed cookie includes an opaque session identifier whose hash and expiry are
+kept in the SQLite session registry. Keep that registry on persistent, writable
+storage shared by all dashboard workers. Sign-out revokes only the current session
+before clearing browser state, so a copied cookie cannot be replayed afterward;
+other signed-in devices remain active. Deploying this version invalidates older
+cookies that do not contain a registered identifier, so operators must sign in once
+again. Registry read or write failures return a sanitized HTTP 503 before Gitea is
+contacted.
+
+Terminate TLS at the trusted reverse proxy: session cookies are deliberately
+`Secure`, `HttpOnly`, `SameSite=Strict`, and scoped to the deployment subpath.
+Use **Sign out & clear this device** on shared devices; it clears Stackchain's
+offline snapshots, drafts, outboxes, background IndexedDB, and PWA caches without
+removing unrelated forge preferences. Rotate either dashboard secret by replacing
+the injected value and restarting the service; changing the signing secret expires
+all sessions immediately. The signing key is never derived from the access token.
+
+For direct, unproxied local development only, set
+`STACKCHAIN_DASHBOARD_AUTH_MODE=insecure-local` and open
+`http://127.0.0.1:8000/`. This mode checks the network peer and rejects non-loopback
+clients; do not use it behind a reverse proxy, whose loopback connection would hide
+the browser's peer address. To verify the backend and its Gitea connection in
+operator mode, sign in and request `http://127.0.0.1:8000/api/v1/context`; a
+successful response is JSON containing
 `user`, `repos`, `issues`, and `pull_requests`. Press `Ctrl/Cmd+K` in the dashboard
 to search commands plus issues and pull requests across every repository visible to
 the configured Gitea token. Remote search starts after two characters, is debounced,
@@ -65,6 +123,82 @@ API process is running and does not contact Gitea. GET `/readyz` is the
 readiness check: it validates the configured Gitea credentials and returns
 HTTP 503 with an error when Gitea is unavailable or authentication fails.
 
+The application-lifetime Gitea transport bounds aggregate upstream traffic and
+coalesces identical concurrent GETs without caching completed responses. By
+default, at most eight requests run at once, with one slot reserved for authored
+mutations so polling and detail-read bursts cannot starve comments, reviews, or
+other writes. Requests that cannot enter within 250 ms fail as retryable HTTP
+503 responses. Tune these limits with `GITEA_MAX_CONCURRENCY` (minimum `2`) and
+`GITEA_ADMISSION_TIMEOUT_SECONDS` (minimum `0.001`); keep the admission timeout
+below the route deadlines. Streaming diff reads share the same read capacity,
+while POST, PATCH, PUT, and DELETE requests are never coalesced.
+
+## Offline mobile shell
+
+At phone widths, a persistent bottom task dock keeps **Work**, **Find**, **New**,
+**Search**, and **Drafts** thumb-reachable. It reuses the existing sheets and My Work
+filter, preserves the selected release lane, shows the current draft count, respects
+the device safe area, and moves out of the way while a full-screen task is open.
+Desktop layout is unchanged.
+
+My Work also has a local **Later** queue. **Later today** defers an item for four
+hours, while **Tomorrow** returns it at 09:00 in the device's local timezone.
+Deferred items leave normal and Attention queues without marking notifications read
+or changing any Gitea issue or pull request. They automatically return to their
+existing priority position at the wake time, and **Bring back now** restores them
+early. Later state is stored only in this browser, scoped to the confirmed Gitea
+login, and removed when fully loaded work confirms that an item no longer exists.
+
+After one successful online load, the installed dashboard precaches a versioned,
+subpath-scoped application shell. During a network outage or a dashboard HTTP
+`500`, `502`, `503`, or `504` response, navigation falls back to that shell when
+it is available so local issue and review drafts remain reachable. Authentication
+and other client-error responses are never hidden. A visible, accessible offline
+or server-outage notice distinguishes cached mode from live Gitea data, and the
+dashboard keeps polling until it can restore its live snapshot automatically.
+
+Users can explicitly enable **Keep My Work available offline**. Each healthy live
+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. Bodies, comments, diffs, credentials, repository catalogs,
+events, and complete API responses are excluded. A cold offline launch labels the
+saved time and renders this snapshot read-only; opening live details, pagination,
+and server mutations remain disabled until reconnection. **Clear offline work
+data** deletes the snapshot, and opting out deletes it automatically.
+
+API responses and mutations are never cached by the service worker. New issue captures,
+issue comments, pull-request comments, and unread-update replies use bounded local
+outboxes when connectivity or a retryable server failure prevents delivery. Issue
+captures and authored messages are also mirrored into account-bound IndexedDB lanes
+and registered with Background Sync, so a supporting installed browser can deliver
+new issues, issue comments, pull-request comments, and unread-update replies after
+every dashboard client has closed. The worker verifies the current Gitea login, shares
+an atomic delivery claim with the foreground path, and preserves the original
+idempotency key. Installed browsers can explicitly enable **Notify me when queued
+work finishes**; permission is requested only from that user gesture and the choice
+is stored for the confirmed account in the private background outbox database.
+Successful deliveries produce privacy-safe receipts that open the created issue or
+source conversation, while permanent validation failures open Drafts for recovery.
+Authentication expiry during a worker mutation is recoverable: the worker releases the
+claim without creating an Attention receipt, stops that drain, and keeps the original
+idempotency key. Loading the authenticated dashboard after signing in asks the worker
+to resume queued delivery automatically.
+Notification text never includes issue titles, comment bodies, or validation details.
+The preference is off by default, unsupported or denied browsers retain foreground
+reconciliation, and **Sign out & clear this device** removes the account-bound choice.
+Browsers without
+IndexedDB or Background Sync keep the foreground reconnect behavior. Drafts shows
+queued and needs-attention messages with explicit send/discard controls; reopening the
+dashboard reconciles worker completions and permanent failures into the visible outbox.
+Foreground delivery flushes messages sequentially with their original idempotency keys.
+Tabs coordinate each queue through the browser lock manager (with an expiring local
+lease fallback), so an installed PWA and a browser tab cannot submit the same operation
+concurrently. Queue changes are broadcast to other tabs and refresh Drafts without
+polling; an abandoned lease can be reclaimed after expiry. State-sensitive actions such
+as reviews, merges, closures, labels, milestones, and assignments are never queued.
+Service-worker upgrades are atomic and remove only older
+`stackchain-dashboard-*` caches, preserving unrelated caches on the same origin.
+
 Run the test suite with:
 
 ```bash

conftest.py

@@ -0,0 +1,9 @@
+import pytest
+
+
+@pytest.fixture(autouse=True)
+def explicit_local_dashboard_auth_mode(monkeypatch):
+    """Keep tests intentional now that deployed authentication fails closed."""
+    monkeypatch.setenv("STACKCHAIN_DASHBOARD_AUTH_MODE", "insecure-local")
+    monkeypatch.delenv("STACKCHAIN_DASHBOARD_ACCESS_TOKEN", raising=False)
+    monkeypatch.delenv("STACKCHAIN_DASHBOARD_SESSION_SECRET", raising=False)

frontend/authored-outbox.js

@@ -0,0 +1,202 @@
+function createAuthoredOutbox({ storage, fetchJson, coordinator, backgroundSync, getOwnerLogin = () => '', createOperationId, now = () => Date.now(), maxItems = 50 }) {
+  const storageKey = 'stackchain.authored-outbox.v1';
+  const makeId = createOperationId || (() =>
+    globalThis.crypto?.randomUUID?.() || String(Date.now()) + '-' + Math.random().toString(16).slice(2)
+  );
+  const pending = new Map();
+  const supportedKinds = new Set(['issue-comment', 'pull-comment', 'update-reply']);
+
+  function read() {
+    try {
+      const record = JSON.parse(storage?.getItem(storageKey) || 'null');
+      if (![1, 2].includes(record?.version) || !Array.isArray(record.items)) return [];
+      return record.items.filter(item => item && supportedKinds.has(item.kind));
+    } catch (_error) { return []; }
+  }
+
+  function write(items, mirror = true) {
+    storage?.setItem(storageKey, JSON.stringify({ version: 2, items }));
+    coordinator?.notify('authored');
+    if (mirror && backgroundSync?.reconcile) {
+      Promise.resolve(backgroundSync.reconcile(items, 'authored'))
+        .then(() => items.length ? backgroundSync.requestSync?.() : undefined)
+        .catch(() => { /* Foreground reconnect remains the compatibility fallback. */ });
+    }
+  }
+
+  function enqueue(message, mirror = true) {
+    if (!supportedKinds.has(message?.kind)) throw new Error('This action cannot be queued.');
+    const ownerLogin = String(getOwnerLogin() || '').trim();
+    if (!ownerLogin) throw new Error('Confirm your Gitea account before queueing a message.');
+    const items = read();
+    const requestedOperationId = String(message.operationId || '').slice(0, 128);
+    const existing = requestedOperationId && items.find(item => item.operationId === requestedOperationId);
+    if (existing) return { ...existing };
+    if (items.length >= maxItems) throw new Error('Message outbox is full. Send or discard a queued message first.');
+    const id = String(requestedOperationId || makeId()).slice(0, 128);
+    const item = {
+      id,
+      operationId: requestedOperationId || id,
+      kind: message.kind,
+      repository: String(message.repository || ''),
+      number: Number(message.number || 0),
+      notificationId: Number(message.notificationId || 0),
+      body: String(message.body || ''),
+      ownerLogin,
+      status: 'queued',
+      queuedAt: Number(now()),
+    };
+    items.push(item);
+    write(items, mirror);
+    return item;
+  }
+
+  async function enqueueDurably(message) {
+    const item = enqueue(message, false);
+    if (!backgroundSync?.reconcile || !backgroundSync?.requestSync) {
+      return { item, background: false, durability: 'foreground-only' };
+    }
+    try {
+      await backgroundSync.reconcile(read(), 'authored');
+      await backgroundSync.requestSync();
+      return { item, background: true, durability: 'background' };
+    } catch (error) {
+      return { item, background: false, durability: 'foreground-only', error };
+    }
+  }
+
+  function update(id, changes) {
+    let updated = null;
+    write(read().map(item => {
+      if (item.id !== id) return item;
+      const body = String(changes?.body ?? item.body);
+      updated = {
+        ...item,
+        body,
+        operationId: body === item.body ? item.operationId : String(makeId()).slice(0, 128),
+        status: 'queued',
+      };
+      delete updated.error;
+      return updated;
+    }));
+    return updated;
+  }
+
+  function discard(id) {
+    const items = read();
+    if (!items.some(item => item.id === id)) return false;
+    write(items.filter(item => item.id !== id));
+    return true;
+  }
+
+  function endpoint(item) {
+    if (item.kind === 'update-reply') {
+      return 'api/v1/notifications/' + encodeURIComponent(item.notificationId) + '/reply';
+    }
+    const repository = item.repository.split('/').map(encodeURIComponent).join('/');
+    const resource = item.kind === 'pull-comment' ? 'pulls' : 'issues';
+    return 'api/v1/repos/' + repository + '/' + resource + '/' + encodeURIComponent(item.number) + '/comments';
+  }
+
+  async function sendItem(item, currentLogin) {
+    if (!currentLogin || item.ownerLogin !== currentLogin) return { blocked: true };
+    if (pending.has(item.id)) return pending.get(item.id);
+    const request = (async () => {
+      try {
+        let result;
+        if (backgroundSync?.send) {
+          const delivery = await backgroundSync.send(item, currentLogin);
+          if (delivery.attention) {
+            const error = delivery.error || new Error('Message needs attention');
+            error.status = Number(error.status || 422);
+            throw error;
+          }
+          result = delivery.message;
+        } else {
+          result = await fetchJson(endpoint(item), {
+            method: 'POST',
+            headers: {
+              Accept: 'application/json',
+              'Content-Type': 'application/json',
+              'Idempotency-Key': item.operationId,
+            },
+            body: JSON.stringify({ body: item.body }),
+          });
+        }
+        if (!result) return { blocked: true };
+        discard(item.id);
+        return { result };
+      } catch (error) {
+        const status = Number(error?.status || 0);
+        const permanent = status >= 400 && status < 500;
+        if (permanent) {
+          write(read().map(candidate => candidate.id === item.id ? {
+            ...candidate,
+            status: 'attention',
+            error: String(error.message || 'Message needs attention').slice(0, 240),
+          } : candidate));
+        }
+        return { error, transient: !permanent };
+      }
+    })();
+    pending.set(item.id, request);
+    try { return await request; }
+    finally { if (pending.get(item.id) === request) pending.delete(item.id); }
+  }
+
+  async function flushQueue(currentLogin) {
+    const confirmed = [];
+    let blocked = 0;
+    currentLogin = String(currentLogin || '').trim();
+    for (const item of read()) {
+      if (item.status === 'attention') continue;
+      if (!currentLogin || item.ownerLogin !== currentLogin) { blocked += 1; continue; }
+      const outcome = await sendItem(item, currentLogin);
+      if (outcome.result) confirmed.push(outcome.result);
+      if (outcome.transient) break;
+    }
+    return { confirmed, remaining: read(), blocked };
+  }
+
+  async function flush(currentLogin) {
+    if (coordinator) return coordinator.runExclusive('authored', () => flushQueue(currentLogin));
+    return flushQueue(currentLogin);
+  }
+
+  async function retryItem(id, currentLogin) {
+    const item = read().find(candidate => candidate.id === id);
+    if (!item) return { confirmed: [], remaining: read() };
+    currentLogin = String(currentLogin || '').trim();
+    if (!currentLogin || item.ownerLogin !== currentLogin) {
+      return { confirmed: [], remaining: read(), blocked: 1 };
+    }
+    const queued = item.status === 'attention' ? update(id, item) : item;
+    const outcome = await sendItem(queued, currentLogin);
+    return { confirmed: outcome.result ? [outcome.result] : [], remaining: read(), blocked: 0 };
+  }
+
+  async function retry(id, currentLogin) {
+    if (coordinator) return coordinator.runExclusive('authored', () => retryItem(id, currentLogin));
+    return retryItem(id, currentLogin);
+  }
+
+  function reconcileBackground(records) {
+    const statuses = new Map((records || []).map(item => [item.id, item]));
+    const items = read().flatMap(item => {
+      const background = statuses.get(item.id);
+      if (background?.status === 'sent') return [];
+      if (background?.status === 'attention') return [{
+        ...item,
+        status: 'attention',
+        error: String(background.error || 'Message needs attention').slice(0, 240),
+      }];
+      return [item];
+    });
+    write(items);
+    return items;
+  }
+
+  return { enqueue, enqueueDurably, update, discard, flush, retry, reconcileBackground, list: () => read().map(item => ({ ...item })) };
+}
+
+if (typeof module !== 'undefined' && module.exports) module.exports = createAuthoredOutbox;

frontend/background-issue-sync.js

@@ -0,0 +1,284 @@
+function createIndexedDbTransaction(indexedDB, dbName = 'stackchain-background-outbox-v1') {
+  let databasePromise;
+  function database() {
+    if (!databasePromise) databasePromise = new Promise((resolve, reject) => {
+      const request = indexedDB.open(dbName, 1);
+      request.onupgradeneeded = () => {
+        if (!request.result.objectStoreNames.contains('issues')) {
+          request.result.createObjectStore('issues', { keyPath: 'id' });
+        }
+      };
+      request.onsuccess = () => resolve(request.result);
+      request.onerror = () => reject(request.error);
+    });
+    return databasePromise;
+  }
+  const requested = request => new Promise((resolve, reject) => {
+    request.onsuccess = () => resolve(request.result);
+    request.onerror = () => reject(request.error);
+  });
+  return async work => {
+    const db = await database();
+    return new Promise((resolve, reject) => {
+      const transaction = db.transaction('issues', 'readwrite');
+      const objectStore = transaction.objectStore('issues');
+      let result;
+      let failed = false;
+      transaction.oncomplete = () => failed ? undefined : resolve(result);
+      transaction.onerror = () => reject(transaction.error);
+      transaction.onabort = () => reject(transaction.error || new Error('Issue outbox transaction aborted'));
+      Promise.resolve(work({
+        getAll: () => requested(objectStore.getAll()),
+        put: value => requested(objectStore.put(value)),
+        delete: id => requested(objectStore.delete(id)),
+      })).then(value => { result = value; }).catch(error => {
+        failed = true;
+        try { transaction.abort(); } catch (_abortError) { reject(error); }
+        reject(error);
+      });
+    });
+  };
+}
+
+function createIssueSyncStore({ transaction, indexedDB = globalThis.indexedDB, now = () => Date.now(), claimMs = 30000 } = {}) {
+  const transact = transaction || createIndexedDbTransaction(indexedDB);
+
+  async function reconcile(items, outboxLane = 'issue') {
+    return transact(async records => {
+      const existing = await records.getAll();
+      const incoming = new Map(items.map(item => [item.id, { ...item, outboxLane }]));
+      for (const current of existing) {
+        if (current.recordType === 'receipt-preference') continue;
+        const currentLane = current.outboxLane || 'issue';
+        if (currentLane !== outboxLane) continue;
+        const replacement = incoming.get(current.id);
+        if (!replacement) {
+          if (current.status !== 'sending' || Number(current.claimUntil) <= Number(now())) {
+            await records.delete(current.id);
+          }
+          continue;
+        }
+        if ((current.status === 'sending' && Number(current.claimUntil) > Number(now())) ||
+            (current.status === 'attention' && replacement.status === 'attention') ||
+            current.status === 'sent') {
+          incoming.set(current.id, current);
+        }
+      }
+      for (const item of incoming.values()) await records.put(item);
+    });
+  }
+
+  async function claimNext(ownerLogin) {
+    return transact(async records => {
+      const timestamp = Number(now());
+      const items = await records.getAll();
+      const item = items.find(candidate => candidate.ownerLogin === ownerLogin &&
+        (candidate.status === 'queued' || candidate.status === 'sending') &&
+        (candidate.status !== 'sending' || Number(candidate.claimUntil) <= timestamp));
+      if (!item) return null;
+      const claimed = { ...item, status: 'sending', claimUntil: timestamp + claimMs };
+      await records.put(claimed);
+      return claimed;
+    });
+  }
+
+  async function claim(id, ownerLogin) {
+    return transact(async records => {
+      const timestamp = Number(now());
+      const item = (await records.getAll()).find(candidate => candidate.id === id);
+      if (!item || item.ownerLogin !== ownerLogin ||
+          !['queued', 'sending'].includes(item.status) ||
+          (item.status === 'sending' && Number(item.claimUntil) > timestamp)) return null;
+      const claimed = { ...item, status: 'sending', claimUntil: timestamp + claimMs };
+      await records.put(claimed);
+      return claimed;
+    });
+  }
+
+  async function upsert(item) {
+    return transact(async records => {
+      const current = (await records.getAll()).find(candidate => candidate.id === item.id);
+      if (current && ((current.status === 'sending' && Number(current.claimUntil) > Number(now())) ||
+          (current.status === 'attention' && item.status === 'attention') ||
+          current.status === 'sent')) return current;
+      await records.put({ ...item });
+      return item;
+    });
+  }
+
+  async function update(id, transform) {
+    return transact(async records => {
+      const item = (await records.getAll()).find(candidate => candidate.id === id);
+      if (item) await records.put(transform(item));
+    });
+  }
+
+  function preferenceId(ownerLogin) {
+    return 'receipt-preference:' + String(ownerLogin || '').trim();
+  }
+
+  async function setReceiptPreference(ownerLogin, enabled) {
+    const login = String(ownerLogin || '').trim();
+    if (!login) return;
+    return transact(async records => {
+      const id = preferenceId(login);
+      if (!enabled) return records.delete(id);
+      return records.put({ id, recordType: 'receipt-preference', ownerLogin: login, enabled: true });
+    });
+  }
+
+  async function getReceiptPreference(ownerLogin) {
+    const id = preferenceId(ownerLogin);
+    return transact(async records => Boolean(
+      (await records.getAll()).find(item => item.id === id)?.enabled
+    ));
+  }
+
+  return {
+    reconcile,
+    upsert,
+    claim,
+    claimNext,
+    complete: id => update(id, item => ({ ...item, status: 'sent', claimUntil: 0 })),
+    release: id => update(id, item => ({ ...item, status: 'queued', claimUntil: 0 })),
+    fail: (id, error) => update(id, item => ({ ...item, status: 'attention', claimUntil: 0, error })),
+    snapshot: () => transact(async records =>
+      (await records.getAll()).filter(item => item.recordType !== 'receipt-preference')),
+    countBlocked: ownerLogin => transact(async records =>
+      (await records.getAll()).filter(item => item.recordType !== 'receipt-preference' &&
+        item.status !== 'sent' && item.ownerLogin !== ownerLogin).length),
+    setReceiptPreference,
+    getReceiptPreference,
+  };
+}
+
+function createBackgroundIssueSync({ store, fetchJson, base = '' }) {
+  function receiptFor(item, status, delivered = {}) {
+    if (status === 'attention') {
+      return { id: item.id, status, kind: item.kind ? 'message' : 'issue', route: '#/my-work/drafts' };
+    }
+    if (item.kind === 'update-reply') {
+      return { id: item.id, status, kind: 'message', route: '#/my-work/update/' + encodeURIComponent(item.notificationId) };
+    }
+    const repository = String(item.repository || '').split('/').map(encodeURIComponent).join('/');
+    if (item.kind === 'issue-comment' || item.kind === 'pull-comment') {
+      const resource = item.kind === 'pull-comment' ? 'pull' : 'issue';
+      return { id: item.id, status, kind: 'message', route: '#/my-work/' + resource + '/' + repository + '/' + encodeURIComponent(item.number) };
+    }
+    return { id: item.id, status, kind: 'issue', route: '#/my-work/issue/' + repository + '/' + encodeURIComponent(delivered.number) };
+  }
+
+  function deliveryRequest(item) {
+    if (item.kind === 'update-reply') {
+      return authoredRequest('api/v1/notifications/' + encodeURIComponent(item.notificationId) + '/reply', item);
+    }
+    const repository = String(item.repository || '').split('/').map(encodeURIComponent).join('/');
+    if (item.kind === 'issue-comment' || item.kind === 'pull-comment') {
+      const resource = item.kind === 'pull-comment' ? 'pulls' : 'issues';
+      return authoredRequest(
+        'api/v1/repos/' + repository + '/' + resource + '/' + encodeURIComponent(item.number) + '/comments',
+        item,
+      );
+    }
+    return {
+      url: base + 'api/v1/repos/' + repository + '/issues',
+      options: {
+        method: 'POST',
+        headers: {
+          Accept: 'application/json',
+          'Content-Type': 'application/json',
+          'Idempotency-Key': item.operationId,
+        },
+        body: JSON.stringify({
+          title: item.title,
+          body: item.body,
+          label_ids: item.labelIds,
+          ...(item.milestoneId ? { milestone_id: item.milestoneId } : {}),
+          ...(item.dueDate ? { due_date: item.dueDate + 'T23:59:59Z' } : {}),
+        }),
+      },
+    };
+  }
+
+  function authoredRequest(url, item) {
+    return {
+      url: base + url,
+      options: {
+        method: 'POST',
+        headers: {
+          Accept: 'application/json',
+          'Content-Type': 'application/json',
+          'Idempotency-Key': item.operationId,
+        },
+        body: JSON.stringify({ body: item.body }),
+      },
+    };
+  }
+
+  async function deliver(item) {
+    const request = deliveryRequest(item);
+    try {
+      const delivered = await fetchJson(request.url, request.options);
+      await store.complete(item.id);
+      const receipt = receiptFor(item, 'confirmed', delivered);
+      return item.kind ? { message: delivered, receipt } : { issue: delivered, receipt };
+    } catch (error) {
+      const status = Number(error?.status || 0);
+      if (status === 401) {
+        await store.release(item.id);
+        throw error;
+      }
+      if (status >= 400 && status < 500) {
+        await store.fail(item.id, String(error?.message || 'Issue needs attention').slice(0, 240));
+        return { attention: true, error, receipt: receiptFor(item, 'attention') };
+      }
+      await store.release(item.id);
+      throw error;
+    }
+  }
+
+  async function send(item, currentLogin) {
+    if (!currentLogin || item.ownerLogin !== currentLogin) return { blocked: true };
+    await store.upsert(item);
+    const claimed = await store.claim(item.id, currentLogin);
+    if (!claimed) return { busy: true };
+    return deliver(claimed);
+  }
+
+  async function flush() {
+    const identity = await fetchJson(base + 'api/v1/background-identity', {
+      headers: { Accept: 'application/json' }, cache: 'no-store',
+    });
+    const login = String(identity?.login || '').trim();
+    const confirmed = [];
+    const receipts = [];
+    let attention = 0;
+    if (!login) return { confirmed, blocked: 0, attention, login, receipts };
+    while (true) {
+      const item = await store.claimNext(login);
+      if (!item) break;
+      const result = await deliver(item);
+      if (result.issue) confirmed.push(result.issue);
+      if (result.message) confirmed.push(result.message);
+      if (result.attention) attention += 1;
+      if (result.receipt) receipts.push(result.receipt);
+    }
+    const blocked = store.countBlocked ? await store.countBlocked(login) : 0;
+    return { confirmed, blocked, attention, login, receipts };
+  }
+
+  return {
+    flush, send,
+    reconcile: (items, outboxLane) => store.reconcile(items, outboxLane),
+    snapshot: () => store.snapshot(),
+    setReceiptPreference: (ownerLogin, enabled) => store.setReceiptPreference(ownerLogin, enabled),
+    getReceiptPreference: ownerLogin => store.getReceiptPreference(ownerLogin),
+  };
+}
+
+createBackgroundIssueSync.createIssueSyncStore = createIssueSyncStore;
+if (typeof module !== 'undefined' && module.exports) module.exports = createBackgroundIssueSync;
+if (typeof globalThis !== 'undefined') {
+  globalThis.createBackgroundIssueSync = createBackgroundIssueSync;
+  globalThis.createIssueSyncStore = createIssueSyncStore;
+}

frontend/create-issue-sheet.js

@@ -8,25 +8,44 @@ function newIssueOperationId() {
   return String(Date.now()) + '-' + Math.random().toString(16).slice(2);
 }
 
+function normalizeSharedContent(value = {}) {
+  const clean = input => String(input || '').replace(/\s+/g, ' ').trim();
+  const text = String(value.text || '').trim().slice(0, 9500);
+  const textSummary = clean(text);
+  const sentence = (textSummary.match(/^.{1,80}?[.!?](?:\s|$)/)?.[0] || textSummary.slice(0, 80)).trim();
+  const title = (clean(value.title) || sentence).slice(0, 240);
+  const url = clean(value.url).slice(0, 2000);
+  const body = text && url && text.includes(url) ? text : [text, url].filter(Boolean).join('\n\n');
+  return { title, body };
+}
+
 function createIssueCapture({ fetchJson, storage, createOperationId = newIssueOperationId }) {
   const storageKey = 'stackchain.issue-capture.v1';
+  const sharedStorageKey = 'stackchain.issue-share.v1';
   let pending = null;
   const safeLabelIds = value => Array.from(new Set(
     (Array.isArray(value) ? value : []).filter(id => Number.isInteger(id) && id > 0)
   )).slice(0, 20);
   const emptyDraft = () => ({ repository: '', title: '', body: '', labelIds: [] });
+  const safeMilestoneId = value => Number.isInteger(Number(value)) && Number(value) > 0 ? Number(value) : null;
+  const safeDueDate = value => /^\d{4}-\d{2}-\d{2}$/.test(String(value || '')) ? String(value) : '';
 
   function loadStored() {
     try {
       const parsed = JSON.parse(storage.getItem(storageKey) || 'null');
       if (!parsed || typeof parsed !== 'object') return {...emptyDraft(), operationId: ''};
-      return {
+      const draft = {
         repository: String(parsed.repository || ''),
         title: String(parsed.title || ''),
         body: String(parsed.body || ''),
         labelIds: safeLabelIds(parsed.labelIds),
         operationId: String(parsed.operationId || '').slice(0, 128),
       };
+      const milestoneId = safeMilestoneId(parsed.milestoneId);
+      const dueDate = safeDueDate(parsed.dueDate);
+      if (milestoneId !== null) draft.milestoneId = milestoneId;
+      if (dueDate) draft.dueDate = dueDate;
+      return draft;
     } catch (_error) {
       return {...emptyDraft(), operationId: ''};
     }
@@ -45,7 +64,12 @@ function createIssueCapture({ fetchJson, storage, createOperationId = newIssueOp
       body: String(draft?.body || ''),
       labelIds: safeLabelIds(draft?.labelIds),
     };
-    const unchanged = ['repository', 'title', 'body'].every(key => previous[key] === safe[key]) &&
+    const milestoneId = safeMilestoneId(draft?.milestoneId);
+    const dueDate = safeDueDate(draft?.dueDate);
+    if (milestoneId !== null) safe.milestoneId = milestoneId;
+    if (dueDate) safe.dueDate = dueDate;
+    const unchanged = ['repository', 'title', 'body', 'milestoneId', 'dueDate']
+      .every(key => (previous[key] || '') === (safe[key] || '')) &&
       JSON.stringify(previous.labelIds) === JSON.stringify(safe.labelIds);
     writeStored({...safe, operationId: unchanged ? previous.operationId : ''});
     return safe;
@@ -61,6 +85,42 @@ function createIssueCapture({ fetchJson, storage, createOperationId = newIssueOp
     catch (_error) { /* Confirmed creation remains authoritative. */ }
   }
 
+  function pendingSharedContent() {
+    try {
+      const parsed = JSON.parse(storage.getItem(sharedStorageKey) || 'null');
+      if (!parsed || typeof parsed !== 'object') return null;
+      const shared = normalizeSharedContent({title: parsed.title, text: parsed.body});
+      return shared.title || shared.body ? shared : null;
+    } catch (_error) {
+      return null;
+    }
+  }
+
+  function acceptSharedContent() {
+    const shared = pendingSharedContent();
+    if (!shared) return loadDraft();
+    const accepted = saveDraft({...loadDraft(), ...shared});
+    try { storage.removeItem(sharedStorageKey); }
+    catch (_error) { /* Accepted content is already persisted as the issue draft. */ }
+    return accepted;
+  }
+
+  function discardSharedContent() {
+    try { storage.removeItem(sharedStorageKey); }
+    catch (_error) { /* The existing issue draft remains authoritative. */ }
+  }
+
+  function stageSharedContent(value) {
+    const shared = normalizeSharedContent(value);
+    if (!shared.title && !shared.body) return {status: 'empty'};
+    try { storage.setItem(sharedStorageKey, JSON.stringify(shared)); }
+    catch (_error) { /* The caller can still use the in-page share payload. */ }
+    const existing = loadDraft();
+    if (existing.title || existing.body) return {status: 'conflict'};
+    acceptSharedContent();
+    return {status: 'ready'};
+  }
+
   function loadLabels(repository) {
     const encoded = String(repository || '').split('/').map(encodeURIComponent).join('/');
     const priorities = new Set(['p0', 'priority-high', 'critical']);
@@ -73,6 +133,13 @@ function createIssueCapture({ fetchJson, storage, createOperationId = newIssueOp
     );
   }
 
+  function loadMilestones(repository) {
+    const encoded = String(repository || '').split('/').map(encodeURIComponent).join('/');
+    return fetchJson('api/v1/repos/' + encoded + '/milestones').then(milestones =>
+      Array.isArray(milestones) ? milestones : []
+    );
+  }
+
   function submit(draft) {
     if (pending) return pending;
     const saved = saveDraft(draft);
@@ -88,6 +155,8 @@ function createIssueCapture({ fetchJson, storage, createOperationId = newIssueOp
       },
       body: JSON.stringify({
         title: saved.title, body: saved.body, label_ids: saved.labelIds,
+        ...(saved.milestoneId ? {milestone_id: saved.milestoneId} : {}),
+        ...(saved.dueDate ? {due_date: saved.dueDate + 'T23:59:59Z'} : {}),
       }),
     }).then(issue => {
       clearDraft();
@@ -96,7 +165,12 @@ function createIssueCapture({ fetchJson, storage, createOperationId = newIssueOp
     return pending;
   }
 
-  return { saveDraft, loadDraft, loadLabels, submit };
+  return {
+    saveDraft, loadDraft, clearDraft, loadLabels, loadMilestones, submit,
+    stageSharedContent, pendingSharedContent, acceptSharedContent, discardSharedContent,
+  };
 }
 
+createIssueCapture.normalizeSharedContent = normalizeSharedContent;
+
 if (typeof module !== 'undefined' && module.exports) module.exports = createIssueCapture;

frontend/detail-defer.js

@@ -0,0 +1,25 @@
+function createDetailDefer({
+  laterWork,
+  session,
+  close,
+  refresh,
+  focus,
+  announce,
+  formatTime = value => new Date(value).toLocaleString(),
+}) {
+  return {
+    defer(item, preset) {
+      if (!item) return false;
+      const until = laterWork.presetUntil(preset);
+      if (!laterWork.defer(item, until)) return false;
+      const inSession = session.active();
+      if (!inSession) close();
+      refresh();
+      announce('Deferred until ' + formatTime(until) + '. It stays unread and unchanged in Gitea.');
+      if (!inSession) focus();
+      return true;
+    },
+  };
+}
+
+if (typeof module !== 'undefined' && module.exports) module.exports = createDetailDefer;

frontend/drafts.js

@@ -1,4 +1,4 @@
-function createDraftInbox({ storage, now = () => Date.now() }) {
+function createDraftInbox({ storage, getCurrentLogin = () => '', now = () => Date.now() }) {
   const indexKey = 'stackchain.draft-index.v1';
 
   function readIndex() {
@@ -98,6 +98,68 @@ function createDraftInbox({ storage, now = () => Date.now() }) {
     return null;
   }
 
+  function parseOutbox(raw) {
+    try {
+      const record = JSON.parse(raw);
+      if (![1, 2].includes(record?.version) || !Array.isArray(record.items)) return [];
+      const currentLogin = String(getCurrentLogin() || '').trim();
+      return record.items.filter(item =>
+        item && typeof item.id === 'string' && typeof item.repository === 'string' && typeof item.title === 'string'
+      ).map(item => {
+        const ownerLogin = String(item.ownerLogin || '').trim();
+        const quarantined = !ownerLogin || !currentLogin || ownerLogin !== currentLogin;
+        return {
+        id: 'stackchain.issue-outbox.v1:' + item.id,
+        outbox_id: item.id,
+        kind: 'issue-outbox',
+        status: item.status === 'attention' ? 'attention' : 'queued',
+        label: item.status === 'attention' ? 'Needs attention' : 'Queued issue',
+        repository: item.repository,
+        title: textPreview(item.title) || 'Untitled queued issue',
+        preview: textPreview([item.title, item.error || item.body].filter(Boolean).join(' — ')),
+        copy_text: [item.title, item.body].filter(Boolean).join('\n\n'),
+        quarantined,
+        ownership: quarantined ? 'Queued by ' + (ownerLogin || 'an unknown account') +
+          (currentLogin ? ' — current account is ' + currentLogin : ' — account confirmation unavailable') : '',
+        updated_at: Number(item.queuedAt || 0),
+        };
+      });
+    } catch (_error) { return []; }
+  }
+
+  function parseAuthoredOutbox(raw) {
+    try {
+      const record = JSON.parse(raw);
+      if (![1, 2].includes(record?.version) || !Array.isArray(record.items)) return [];
+      const currentLogin = String(getCurrentLogin() || '').trim();
+      return record.items.filter(item => item && typeof item.id === 'string' && typeof item.body === 'string')
+        .map(item => {
+          const isUpdate = item.kind === 'update-reply';
+          const routeKind = item.kind === 'pull-comment' ? 'pull' : 'issue';
+          const target = isUpdate ? 'Update #' + item.notificationId : item.repository + '#' + item.number;
+          const ownerLogin = String(item.ownerLogin || '').trim();
+          const quarantined = !ownerLogin || !currentLogin || ownerLogin !== currentLogin;
+          return {
+            id: 'stackchain.authored-outbox.v1:' + item.id,
+            outbox_id: item.id,
+            kind: 'authored-outbox',
+            status: item.status === 'attention' ? 'attention' : 'queued',
+            label: item.status === 'attention' ? 'Needs attention' : 'Queued message',
+            repository: isUpdate ? '' : item.repository,
+            title: target,
+            preview: textPreview([item.error, item.body].filter(Boolean).join(' — ')),
+            copy_text: item.body,
+            quarantined,
+            ownership: quarantined ? 'Queued by ' + (ownerLogin || 'an unknown account') +
+              (currentLogin ? ' — current account is ' + currentLogin : ' — account confirmation unavailable') : '',
+            updated_at: Number(item.queuedAt || 0),
+            route: isUpdate ? { kind:'update', notification_id:item.notificationId } :
+              { kind:routeKind, repository:item.repository, number:item.number },
+          };
+        });
+    } catch (_error) { return []; }
+  }
+
   function list() {
     const index = readIndex();
     const seen = new Set();
@@ -107,6 +169,16 @@ function createDraftInbox({ storage, now = () => Date.now() }) {
       let raw;
       try { raw = storage.getItem(key); }
       catch (_error) { return; }
+      if (key === 'stackchain.issue-outbox.v1') {
+        parseOutbox(raw).forEach(item => drafts.push(item));
+        seen.add(key);
+        return;
+      }
+      if (key === 'stackchain.authored-outbox.v1') {
+        parseAuthoredOutbox(raw).forEach(item => drafts.push(item));
+        seen.add(key);
+        return;
+      }
       const parsed = parse(key, raw);
       if (!parsed) return;
       seen.add(key);

frontend/issue-outbox.js

@@ -0,0 +1,204 @@
+function createIssueOutbox({ storage, fetchJson, coordinator, backgroundSync, getOwnerLogin = () => '', createOperationId, now = () => Date.now(), maxItems = 20 }) {
+  const storageKey = 'stackchain.issue-outbox.v1';
+  const operationId = createOperationId || (() =>
+    globalThis.crypto?.randomUUID?.() || String(Date.now()) + '-' + Math.random().toString(16).slice(2)
+  );
+  const pending = new Map();
+
+  function read() {
+    try {
+      const record = JSON.parse(storage?.getItem(storageKey) || 'null');
+      if (![1, 2].includes(record?.version) || !Array.isArray(record.items)) return [];
+      return record.items.filter(item => item && typeof item === 'object');
+    } catch (_error) { return []; }
+  }
+
+  function write(items, mirror = true) {
+    storage?.setItem(storageKey, JSON.stringify({ version: 2, items }));
+    coordinator?.notify('issue');
+    if (mirror && backgroundSync?.reconcile) {
+      Promise.resolve(backgroundSync.reconcile(items))
+        .then(() => items.length ? backgroundSync.requestSync?.() : undefined)
+        .catch(() => { /* Foreground reconnect remains the compatibility fallback. */ });
+    }
+  }
+
+  function enqueue(draft, mirror = true) {
+    const ownerLogin = String(getOwnerLogin() || '').trim();
+    if (!ownerLogin) throw new Error('Confirm your Gitea account before queueing an issue.');
+    const items = read();
+    if (items.length >= maxItems) throw new Error('Issue outbox is full. Send or discard a queued issue first.');
+    const item = {
+      id: String(operationId()).slice(0, 128),
+      operationId: '',
+      repository: String(draft?.repository || ''),
+      title: String(draft?.title || ''),
+      body: String(draft?.body || ''),
+      labelIds: Array.isArray(draft?.labelIds) ? draft.labelIds.filter(Number.isInteger).slice(0, 20) : [],
+      ownerLogin,
+      status: 'queued',
+      queuedAt: Number(now()),
+    };
+    item.operationId = item.id;
+    if (Number.isInteger(Number(draft?.milestoneId)) && Number(draft.milestoneId) > 0) {
+      item.milestoneId = Number(draft.milestoneId);
+    }
+    if (/^\d{4}-\d{2}-\d{2}$/.test(String(draft?.dueDate || ''))) item.dueDate = String(draft.dueDate);
+    items.push(item);
+    write(items, mirror);
+    return item;
+  }
+
+  async function enqueueDurably(draft) {
+    const item = enqueue(draft, false);
+    if (!backgroundSync?.reconcile || !backgroundSync?.requestSync) {
+      return { item, background: false, durability: 'foreground-only' };
+    }
+    try {
+      await backgroundSync.reconcile(read());
+      await backgroundSync.requestSync();
+      return { item, background: true, durability: 'background' };
+    } catch (error) {
+      return { item, background: false, durability: 'foreground-only', error };
+    }
+  }
+
+  function update(id, draft, mirror = true) {
+    let updated = null;
+    write(read().map(item => {
+      if (item.id !== id) return item;
+      updated = {
+        ...item,
+        repository: String(draft?.repository || ''), title: String(draft?.title || ''),
+        body: String(draft?.body || ''),
+        labelIds: Array.isArray(draft?.labelIds) ? draft.labelIds.filter(Number.isInteger).slice(0, 20) : [],
+        status: 'queued',
+      };
+      delete updated.error;
+      return updated;
+    }), mirror);
+    return updated;
+  }
+
+  async function updateDurably(id, draft) {
+    const item = update(id, draft, false);
+    if (!item || !backgroundSync?.reconcile || !backgroundSync?.requestSync) {
+      return { item, background: false, durability: 'foreground-only' };
+    }
+    try {
+      await backgroundSync.reconcile(read());
+      await backgroundSync.requestSync();
+      return { item, background: true, durability: 'background' };
+    } catch (error) {
+      return { item, background: false, durability: 'foreground-only', error };
+    }
+  }
+
+  function discard(id) {
+    const items = read();
+    if (!items.some(item => item.id === id)) return false;
+    write(items.filter(item => item.id !== id));
+    return true;
+  }
+
+  async function sendItem(item, currentLogin) {
+    if (!currentLogin || item.ownerLogin !== currentLogin) return { blocked: true };
+    if (pending.has(item.id)) return pending.get(item.id);
+    const repository = item.repository.split('/').map(encodeURIComponent).join('/');
+    const request = (async () => {
+      try {
+        let issue;
+        if (backgroundSync?.send) {
+          const delivery = await backgroundSync.send(item, currentLogin);
+          if (delivery.attention) {
+            const error = delivery.error || new Error('Issue needs attention');
+            error.status = Number(error.status || 422);
+            throw error;
+          }
+          issue = delivery.issue;
+        } else {
+          issue = await fetchJson('api/v1/repos/' + repository + '/issues', {
+            method: 'POST',
+            headers: {
+              Accept: 'application/json', 'Content-Type': 'application/json',
+              'Idempotency-Key': item.operationId,
+            },
+            body: JSON.stringify({
+              title: item.title, body: item.body, label_ids: item.labelIds,
+              ...(item.milestoneId ? { milestone_id: item.milestoneId } : {}),
+              ...(item.dueDate ? { due_date: item.dueDate + 'T23:59:59Z' } : {}),
+            }),
+          });
+        }
+        if (!issue) return { blocked: true };
+        discard(item.id);
+        return { issue };
+      } catch (error) {
+        const status = Number(error?.status || 0);
+        if (status >= 400 && status < 500) {
+          write(read().map(candidate => candidate.id === item.id ? {
+            ...candidate, status: 'attention', error: String(error.message || 'Issue needs attention').slice(0, 240),
+          } : candidate));
+        }
+        return { error, transient: !(status >= 400 && status < 500) };
+      }
+    })();
+    pending.set(item.id, request);
+    try { return await request; }
+    finally { if (pending.get(item.id) === request) pending.delete(item.id); }
+  }
+
+  async function flushQueue(currentLogin) {
+    const confirmed = [];
+    let blocked = 0;
+    currentLogin = String(currentLogin || '').trim();
+    for (const item of read()) {
+      if (item.status === 'attention') continue;
+      if (!currentLogin || item.ownerLogin !== currentLogin) { blocked += 1; continue; }
+      const result = await sendItem(item, currentLogin);
+      if (result.issue) confirmed.push(result.issue);
+      if (result.transient) break;
+    }
+    return { confirmed, remaining: read(), blocked };
+  }
+
+  async function flush(currentLogin) {
+    if (coordinator) return coordinator.runExclusive('issue', () => flushQueue(currentLogin));
+    return flushQueue(currentLogin);
+  }
+
+  async function retryItem(id, currentLogin) {
+    const item = read().find(candidate => candidate.id === id);
+    if (!item) return { confirmed: [], remaining: read() };
+    currentLogin = String(currentLogin || '').trim();
+    if (!currentLogin || item.ownerLogin !== currentLogin) {
+      return { confirmed: [], remaining: read(), blocked: 1 };
+    }
+    update(id, item);
+    const result = await sendItem({ ...item, status: 'queued' }, currentLogin);
+    return { confirmed: result.issue ? [result.issue] : [], remaining: read(), blocked: 0 };
+  }
+
+  async function retry(id, currentLogin) {
+    if (coordinator) return coordinator.runExclusive('issue', () => retryItem(id, currentLogin));
+    return retryItem(id, currentLogin);
+  }
+
+  function reconcileBackground(records) {
+    const statuses = new Map((records || []).map(item => [item.id, item]));
+    const items = read().flatMap(item => {
+      const background = statuses.get(item.id);
+      if (background?.status === 'sent') return [];
+      if (background?.status === 'attention') return [{
+        ...item, status: 'attention', error: String(background.error || 'Issue needs attention').slice(0, 240),
+      }];
+      return [item];
+    });
+    write(items);
+    return items;
+  }
+
+  return { enqueue, enqueueDurably, update, updateDurably, discard, flush, retry, reconcileBackground, list: () => read().map(item => ({ ...item })) };
+}
+
+if (typeof module !== 'undefined' && module.exports) module.exports = createIssueOutbox;

frontend/later-work.js

@@ -0,0 +1,113 @@
+function createLaterWork({ storage, getLogin, now = () => new Date(), setTimer = setTimeout, clearTimer = clearTimeout, onWake = () => {} }) {
+  const prefix = 'stackchain.later-work.v1.';
+  let timer = null;
+
+  function identity(item) {
+    if (!item) return '';
+    const kind = item.is_review ? 'review' : (item.kind || 'work');
+    const number = Number.isInteger(item.number) ? item.number : '';
+    const notification = Number.isInteger(item.notification_id) ? item.notification_id : '';
+    return [kind, item.repository || '', number, notification].join(':');
+  }
+
+  function storageKey() {
+    const login = String(getLogin?.() || '').trim().toLowerCase();
+    return login ? prefix + encodeURIComponent(login) : '';
+  }
+
+  function read() {
+    const key = storageKey();
+    if (!key || !storage) return {};
+    try {
+      const value = JSON.parse(storage.getItem(key) || '{}');
+      return value && typeof value === 'object' && !Array.isArray(value) ? value : {};
+    } catch (_error) {
+      return {};
+    }
+  }
+
+  function write(records) {
+    const key = storageKey();
+    if (!key || !storage) return false;
+    try {
+      if (Object.keys(records).length) storage.setItem(key, JSON.stringify(records));
+      else storage.removeItem(key);
+      return true;
+    } catch (_error) {
+      return false;
+    }
+  }
+
+  function defer(item, until) {
+    const key = storageKey();
+    const id = identity(item);
+    const wake = new Date(until);
+    if (!key || !id || Number.isNaN(wake.getTime()) || wake <= now()) return false;
+    const records = read();
+    records[id] = wake.toISOString();
+    write(records);
+    return true;
+  }
+
+  function presetUntil(preset) {
+    const current = new Date(now());
+    if (preset === 'today') return new Date(current.getTime() + 4 * 60 * 60 * 1000);
+    if (preset === 'tomorrow') {
+      const wake = new Date(current);
+      wake.setDate(wake.getDate() + 1);
+      wake.setHours(9, 0, 0, 0);
+      return wake;
+    }
+    return new Date(NaN);
+  }
+
+  function restore(item) {
+    const id = identity(item);
+    const records = read();
+    if (!id || !Object.prototype.hasOwnProperty.call(records, id)) return false;
+    delete records[id];
+    write(records);
+    return true;
+  }
+
+  function schedule(wakeTimes, current) {
+    if (timer !== null) clearTimer(timer);
+    timer = null;
+    if (!wakeTimes.length) return;
+    const delay = Math.max(0, Math.min(...wakeTimes) - current);
+    timer = setTimer(() => {
+      timer = null;
+      onWake();
+    }, Math.min(delay, 2147483647));
+  }
+
+  function partition(items, { pruneMissing = true } = {}) {
+    const current = now().getTime();
+    const records = read();
+    const available = new Map((items || []).map(item => [identity(item), item]));
+    const retained = {};
+    const wakeTimes = [];
+
+    Object.entries(records).forEach(([id, wake]) => {
+      const wakeTime = new Date(wake).getTime();
+      if (!Number.isFinite(wakeTime) || wakeTime <= current) return;
+      if (pruneMissing && !available.has(id)) return;
+      retained[id] = new Date(wakeTime).toISOString();
+      wakeTimes.push(wakeTime);
+    });
+
+    if (JSON.stringify(retained) !== JSON.stringify(records)) write(retained);
+    schedule(wakeTimes, current);
+    const deferredIds = new Set(Object.keys(retained));
+    const active = (items || []).filter(item => !deferredIds.has(identity(item)));
+    const later = (items || []).flatMap(item => {
+      const wake = retained[identity(item)];
+      return wake ? [{ ...item, deferred_until: wake }] : [];
+    });
+    return { active, later };
+  }
+
+  return { identity, defer, restore, presetUntil, partition };
+}
+
+if (typeof module !== 'undefined' && module.exports) module.exports = createLaterWork;

frontend/login.js

@@ -0,0 +1,76 @@
+(function (root, factory) {
+  if (typeof module === 'object' && module.exports) module.exports = factory;
+  else root.createLoginController = factory;
+}(typeof self !== 'undefined' ? self : this, function createLoginController(options) {
+  const form = options.form;
+  const status = options.status;
+  const button = options.button;
+  const fetchImpl = options.fetchImpl;
+  const location = options.location;
+  const setIntervalImpl = options.setIntervalImpl || setInterval;
+  const clearIntervalImpl = options.clearIntervalImpl || clearInterval;
+  let timer = null;
+
+  function showRetryCountdown(seconds) {
+    let remaining = Math.max(1, Number.parseInt(seconds, 10) || 1);
+    button.disabled = true;
+    status.textContent = `Too many attempts. Try again in ${remaining} seconds.`;
+    timer = setIntervalImpl(() => {
+      remaining -= 1;
+      if (remaining <= 0) {
+        clearIntervalImpl(timer);
+        timer = null;
+        button.disabled = false;
+        status.textContent = 'You can try signing in again.';
+        return;
+      }
+      status.textContent = `Too many attempts. Try again in ${remaining} seconds.`;
+    }, 1000);
+  }
+
+  async function submit(accessToken) {
+    status.textContent = 'Signing in…';
+    let response;
+    try {
+      response = await fetchImpl('api/v1/session', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ access_token: accessToken }),
+      });
+    } catch (_error) {
+      form.reset();
+      status.textContent = 'Sign-in failed. Check your connection and try again.';
+      return;
+    }
+    form.reset();
+    if (response.ok) {
+      location.replace('./');
+      return;
+    }
+    if (response.status === 429) {
+      showRetryCountdown(response.headers.get('Retry-After'));
+      return;
+    }
+    status.textContent = 'Sign-in failed. Check the token and try again.';
+  }
+
+  return { submit };
+}));
+
+if (typeof document !== 'undefined') {
+  const form = document.getElementById('sign-in');
+  const status = document.getElementById('status');
+  const button = document.getElementById('submit-sign-in');
+  const controller = createLoginController({
+    form,
+    status,
+    button,
+    fetchImpl: fetch.bind(window),
+    location: window.location,
+  });
+  form.addEventListener('submit', event => {
+    event.preventDefault();
+    const accessToken = new FormData(form).get('access_token');
+    controller.submit(accessToken);
+  });
+}

frontend/manifest.webmanifest

@@ -0,0 +1,21 @@
+{
+  "name": "Stackchain Dashboard",
+  "short_name": "Stackchain",
+  "description": "Capture, plan, and complete Gitea work from mobile.",
+  "id": "./",
+  "start_url": "./",
+  "scope": "./",
+  "display": "standalone",
+  "background_color": "#07111f",
+  "theme_color": "#0b1220",
+  "icons": [
+    {"src": "static/icons/stackchain-192.png", "sizes": "192x192", "type": "image/png"},
+    {"src": "static/icons/stackchain-512.png", "sizes": "512x512", "type": "image/png"}
+  ],
+  "share_target": {
+    "action": "./",
+    "method": "GET",
+    "enctype": "application/x-www-form-urlencoded",
+    "params": {"title": "title", "text": "text", "url": "url"}
+  }
+}

frontend/mobile-task-dock.js

@@ -0,0 +1,53 @@
+(function (root, factory) {
+  if (typeof module === 'object' && module.exports) module.exports = factory;
+  else root.createMobileTaskDock = factory;
+})(typeof self !== 'undefined' ? self : this, function createMobileTaskDock(options) {
+  const nav = options.nav;
+  const buttons = options.buttons;
+  const overlays = options.overlays || [];
+  let launcher = null;
+  let wasHidden = false;
+
+  function select(name) {
+    Object.entries(buttons).forEach(([key, button]) => {
+      if (key === name) button.setAttribute('aria-current', 'page');
+      else button.removeAttribute('aria-current');
+    });
+  }
+
+  function refreshVisibility() {
+    const hidden = overlays.some(overlay => overlay.classList.contains('open'));
+    nav.hidden = hidden;
+    if (wasHidden && !hidden && launcher) launcher.focus();
+    wasHidden = hidden;
+  }
+
+  function start() {
+    Object.entries(buttons).forEach(([name, button]) => {
+      button.addEventListener('click', event => {
+        launcher = event.currentTarget;
+        select(name);
+        options.actions[name]();
+      });
+    });
+    options.observe(refreshVisibility, overlays);
+    refreshVisibility();
+  }
+
+  function updateAttention(count) {
+    const total = Math.max(0, Number(count) || 0);
+    const badge = options.attentionBadge;
+    if (badge) {
+      badge.textContent = String(total);
+      badge.hidden = total === 0;
+    }
+    if (buttons.work) {
+      buttons.work.setAttribute(
+        'aria-label',
+        total ? 'Work, ' + total + ' items need attention' : 'Work'
+      );
+    }
+  }
+
+  return {start, refreshVisibility, updateAttention};
+});

frontend/my-work.js

@@ -14,6 +14,25 @@ function issueDueState(dueDate, now) {
   };
 }
 
+function urgencyReason(item) {
+  if (!item?.is_assigned || item.kind !== 'issue') return '';
+  const priorityLabels = ['p0', 'priority-high', 'critical'];
+  const priorityLabel = (item.labels || []).find(label =>
+    priorityLabels.includes(String(label).toLowerCase())
+  );
+  if (priorityLabel) return priorityLabel + ' priority';
+  return ['Overdue', 'Due today'].includes(item.due_label) ? item.due_label : '';
+}
+
+function attentionReason(item) {
+  if (item?.has_update) return 'Unread update';
+  return urgencyReason(item) || (item?.is_review ? 'Needs your review' : '');
+}
+
+function needsAttention(item) {
+  return Boolean(item && (item.has_update || item.is_review || urgencyReason(item)));
+}
+
 function buildMyWork(data, now = new Date()) {
   const login = data.user?.login || '';
   const issues = (data.issues || []).map((item) => ({ ...item, kind: 'issue' }));
@@ -28,7 +47,7 @@ function buildMyWork(data, now = new Date()) {
     const assigned = (item.assignees || []).includes(login);
     const isReview = (item.work_reasons || []).includes('review_requested');
     const due = item.kind === 'issue' ? issueDueState(item.due_date, now) : null;
-    return {
+    const normalized = {
       ...item,
       key: (item.repository || 'unknown') + '#' + item.number,
       is_review: isReview,
@@ -41,6 +60,9 @@ function buildMyWork(data, now = new Date()) {
       _priority: priorityLabel ? 0 :
         (due && due.priority < 4 ? due.priority : (isReview ? 3 : (assigned ? 4 : 5))),
     };
+    normalized.needs_attention = needsAttention(normalized);
+    normalized.attention_reason = attentionReason(normalized);
+    return normalized;
   });
 
   const byKey = new Map(work.map((item) => [item.kind + ':' + item.key, item]));
@@ -50,6 +72,8 @@ function buildMyWork(data, now = new Date()) {
     const existing = byKey.get(subjectKind + ':' + key);
     if (existing) {
       existing.has_update = true;
+      existing.needs_attention = true;
+      existing.attention_reason = 'Unread update';
       existing.notification_id = update.id;
       existing.url = update.url || existing.url;
       existing.updated_at = update.updated_at || existing.updated_at;
@@ -64,6 +88,8 @@ function buildMyWork(data, now = new Date()) {
       is_review: false,
       is_assigned: false,
       has_update: true,
+      needs_attention: true,
+      attention_reason: 'Unread update',
       notification_id: update.id,
       reason: 'Unread update',
       _priority: 1,
@@ -84,7 +110,10 @@ function acknowledgeNotification(items, notificationId) {
     if (item.notification_id !== notificationId) return [item];
     if (item.kind === 'update') return [];
     const { notification_id, ...acknowledged } = item;
-    return [{ ...acknowledged, has_update: false }];
+    const next = { ...acknowledged, has_update: false };
+    if ('needs_attention' in item) next.needs_attention = needsAttention(next);
+    if ('attention_reason' in item) next.attention_reason = attentionReason(next);
+    return [next];
   });
 }
 
@@ -249,10 +278,16 @@ function createWorkPager({ load, onItems, onPagination, onStatus }) {
   };
 }
 
-function createNotificationReader({ load, markRead, onOpen, onDetail, onItems, onStatus, onClose }) {
+function createNotificationReader({
+  load, markRead, onOpen, onDetail, onItems, onStatus, onClose,
+  loadConversation = null,
+  onConversation = () => {},
+  createPager = typeof createConversationPager === 'function' ? createConversationPager : null,
+}) {
   let selected = null;
   let loadVersion = 0;
   let marking = false;
+  let conversationPager = null;
 
   async function open(item) {
     selected = item;
@@ -263,6 +298,14 @@ function createNotificationReader({ load, markRead, onOpen, onDetail, onItems, o
       const detail = await load(item.notification_id);
       if (selected !== item || version !== loadVersion) return false;
       onDetail(detail);
+      if (createPager && loadConversation && detail.conversation) {
+        conversationPager = createPager({
+          loadPage: page => loadConversation(item.notification_id, page),
+        });
+        onConversation(conversationPager.reset(detail.conversation));
+      } else {
+        conversationPager = null;
+      }
       onStatus('Update ready.');
       return true;
     } catch (_error) {
@@ -275,6 +318,29 @@ function createNotificationReader({ load, markRead, onOpen, onDetail, onItems, o
 
   return {
     open,
+    appendReply(comment) {
+      if (!conversationPager) return false;
+      onConversation(conversationPager.append(comment));
+      return true;
+    },
+    async loadOlder() {
+      if (!conversationPager || !selected) return false;
+      const pager = conversationPager;
+      const version = loadVersion;
+      onStatus('Loading older messages…');
+      try {
+        const state = await pager.loadOlder();
+        if (pager !== conversationPager || version !== loadVersion) return false;
+        onConversation(state);
+        onStatus(state.comments.length + ' of ' + state.total + ' messages loaded.');
+        return true;
+      } catch (_error) {
+        if (pager === conversationPager && version === loadVersion) {
+          onStatus('Could not load older messages. Retry.');
+        }
+        return false;
+      }
+    },
     async markReadAndNext(items) {
       if (!selected || marking) return false;
       const current = selected;
@@ -307,7 +373,7 @@ function createNotificationReader({ load, markRead, onOpen, onDetail, onItems, o
 }
 
 function createNotificationReplier({
-  post, storage, onStatus,
+  post, storage, onStatus, authoredOutbox,
   createOperationId = () => globalThis.crypto?.randomUUID?.() || String(Date.now()) + '-' + Math.random(),
 }) {
   let pending = false;
@@ -343,7 +409,20 @@ function createNotificationReplier({
         catch (_error) { /* A confirmed result no longer needs replay identity. */ }
         onStatus('Reply posted. You can mark this update read when ready.');
         return result;
-      } catch (_error) {
+      } catch (error) {
+        const status = Number(error?.status || 0);
+        if (authoredOutbox && (!status || status >= 500)) {
+          onStatus('Saving for background delivery…');
+          const admission = await authoredOutbox.enqueueDurably({
+            kind: 'update-reply', notificationId: item.notification_id, body, operationId,
+          });
+          if (admission.background) {
+            onStatus('Queued for sync when the connection returns.');
+            return { queued: true };
+          }
+          onStatus('Saved for next launch; background delivery unavailable.');
+          return { queued: false, degraded: true };
+        }
         onStatus('Could not send reply. Your draft is safe; retry.');
         return false;
       } finally {
@@ -355,7 +434,8 @@ function createNotificationReplier({
 
 function filterMyWork(items, selectedFilter, selectedMilestone = 'all') {
   let filtered = items;
-  if (selectedFilter === 'review') filtered = items.filter((item) => item.is_review);
+  if (selectedFilter === 'attention') filtered = items.filter(needsAttention);
+  else if (selectedFilter === 'review') filtered = items.filter((item) => item.is_review);
   else if (selectedFilter === 'update') filtered = items.filter((item) => item.has_update);
   else if (selectedFilter !== 'all') filtered = items.filter((item) => item.kind === selectedFilter);
   if (selectedMilestone === 'all') return filtered;
@@ -514,6 +594,7 @@ function summarizeMyWork(items) {
 function countMyWork(items) {
   return {
     all: items.length,
+    attention: items.filter(needsAttention).length,
     issue: items.filter((item) => item.kind === 'issue').length,
     pull: items.filter((item) => item.kind === 'pull' && !item.is_review).length,
     review: items.filter((item) => item.is_review).length,

frontend/offline-work.js

@@ -0,0 +1,88 @@
+(function (root, factory) {
+  const api = factory();
+  if (typeof module !== 'undefined' && module.exports) module.exports = api;
+  else root.createOfflineWorkStore = api;
+})(typeof self !== 'undefined' ? self : this, function () {
+  'use strict';
+
+  const ENABLED_KEY = 'stackchain.offline-work.enabled.v1';
+  const SNAPSHOT_KEY = 'stackchain.offline-work.snapshot.v1';
+  const VERSION = 1;
+  const DEFAULT_MAX_AGE_MS = 7 * 24 * 60 * 60 * 1000;
+  const ITEM_FIELDS = [
+    'id', 'number', 'title', 'state', 'repository', 'labels', 'assignees',
+    'updated_at', 'due_date', 'milestone', 'url', 'work_reasons',
+  ];
+  const NOTIFICATION_FIELDS = [
+    'id', 'number', 'title', 'unread', 'repository', 'subject_type', 'updated_at', 'url',
+  ];
+
+  function pick(source, fields) {
+    const output = {};
+    fields.forEach(field => {
+      if (source && source[field] !== undefined) output[field] = source[field];
+    });
+    return output;
+  }
+
+  function createOfflineWorkStore({ storage, now = () => new Date(), maxAgeMs = DEFAULT_MAX_AGE_MS }) {
+    function enabled() {
+      try { return storage.getItem(ENABLED_KEY) === 'true'; }
+      catch (_) { return false; }
+    }
+
+    function clear() {
+      try { storage.removeItem(SNAPSHOT_KEY); }
+      catch (_) { return false; }
+      return true;
+    }
+
+    function setEnabled(value) {
+      try {
+        storage.setItem(ENABLED_KEY, value ? 'true' : 'false');
+        if (!value) clear();
+        return true;
+      } catch (_) { return false; }
+    }
+
+    function save(snapshot) {
+      if (!enabled() || !snapshot?.user?.login) return false;
+      const record = {
+        version: VERSION,
+        user_login: String(snapshot.user.login),
+        saved_at: now().toISOString(),
+        data: {
+          user: pick(snapshot.user, ['login', 'full_name']),
+          issues: (snapshot.issues || []).map(item => pick(item, ITEM_FIELDS)),
+          pull_requests: (snapshot.pull_requests || []).map(item => pick(item, ITEM_FIELDS)),
+          notifications: (snapshot.notifications || []).map(item => pick(item, NOTIFICATION_FIELDS)),
+          work_pagination: snapshot.work_pagination || {},
+          notification_pagination: snapshot.notification_pagination || {},
+        },
+      };
+      try { storage.setItem(SNAPSHOT_KEY, JSON.stringify(record)); }
+      catch (_) { return false; }
+      return true;
+    }
+
+    function load(expectedLogin) {
+      let record;
+      try { record = JSON.parse(storage.getItem(SNAPSHOT_KEY) || 'null'); }
+      catch (_) { clear(); return null; }
+      const savedAt = Date.parse(record?.saved_at || '');
+      const invalid = record?.version !== VERSION || !record?.user_login || !record?.data ||
+        !Number.isFinite(savedAt);
+      const expired = Number.isFinite(savedAt) && now().getTime() - savedAt > maxAgeMs;
+      if (invalid || expired) {
+        clear();
+        return null;
+      }
+      if (expectedLogin && record.user_login !== expectedLogin) return null;
+      return { ...record.data, saved_at: record.saved_at };
+    }
+
+    return { enabled, setEnabled, save, load, clear };
+  }
+
+  return createOfflineWorkStore;
+});

frontend/outbox-coordinator.js

@@ -0,0 +1,98 @@
+function createOutboxCoordinator({
+  storage,
+  locks = globalThis.navigator?.locks,
+  channelFactory = typeof globalThis.BroadcastChannel === 'function' ?
+    () => new globalThis.BroadcastChannel('stackchain-outbox-v1') : null,
+  addStorageListener = globalThis.addEventListener?.bind(globalThis),
+  removeStorageListener = globalThis.removeEventListener?.bind(globalThis),
+  tabId = globalThis.crypto?.randomUUID?.() || String(Date.now()) + '-' + Math.random().toString(16).slice(2),
+  now = () => Date.now(),
+  leaseMs = 15000,
+} = {}) {
+  const changeKey = 'stackchain.outbox-change.v1';
+  const subscribers = new Set();
+  const channel = channelFactory ? channelFactory() : null;
+  let sequence = 0;
+
+  function validChange(value) {
+    return value && (value.queue === 'issue' || value.queue === 'authored') ? value : null;
+  }
+
+  function publish(change) {
+    subscribers.forEach(listener => listener(change));
+  }
+
+  if (channel) {
+    channel.onmessage = event => {
+      const change = validChange(event?.data);
+      if (change && change.tabId !== tabId) publish(change);
+    };
+  }
+
+  const onStorage = event => {
+    if (event?.key !== changeKey || !event.newValue) return;
+    try {
+      const change = validChange(JSON.parse(event.newValue));
+      if (change && change.tabId !== tabId) publish(change);
+    } catch (_error) { /* Ignore malformed cross-tab signals. */ }
+  };
+  if (addStorageListener) addStorageListener('storage', onStorage);
+
+  function notify(queue) {
+    const change = { queue, tabId, changedAt: Number(now()), sequence: ++sequence };
+    if (!validChange(change)) return;
+    try { storage?.setItem(changeKey, JSON.stringify(change)); } catch (_error) { /* Broadcast may still work. */ }
+    try { channel?.postMessage(change); } catch (_error) { /* Storage events remain available. */ }
+  }
+
+  function skipped() {
+    return { confirmed: [], remaining: [], blocked: 0, lease_skipped: true };
+  }
+
+  async function withFallbackLease(queue, work) {
+    const key = 'stackchain.outbox-lease.' + queue + '.v1';
+    const token = tabId + ':' + (++sequence);
+    const timestamp = Number(now());
+    try {
+      const current = JSON.parse(storage?.getItem(key) || 'null');
+      if (current?.token && Number(current.expiresAt) > timestamp) return skipped();
+      storage?.setItem(key, JSON.stringify({ token, expiresAt: timestamp + leaseMs }));
+      const claimed = JSON.parse(storage?.getItem(key) || 'null');
+      if (claimed?.token !== token) return skipped();
+    } catch (_error) {
+      return work();
+    }
+    try {
+      return await work();
+    } finally {
+      try {
+        const current = JSON.parse(storage?.getItem(key) || 'null');
+        if (current?.token === token) storage?.removeItem(key);
+      } catch (_error) { /* An expired lease will be reclaimed. */ }
+    }
+  }
+
+  async function runExclusive(queue, work) {
+    if (locks?.request) {
+      return locks.request('stackchain-outbox-' + queue + '-v1', { mode: 'exclusive', ifAvailable: true },
+        lock => lock ? work() : skipped());
+    }
+    return withFallbackLease(queue, work);
+  }
+
+  function subscribe(listener) {
+    if (typeof listener !== 'function') return () => {};
+    subscribers.add(listener);
+    return () => subscribers.delete(listener);
+  }
+
+  function close() {
+    subscribers.clear();
+    try { channel?.close(); } catch (_error) { /* No-op. */ }
+    if (removeStorageListener) removeStorageListener('storage', onStorage);
+  }
+
+  return { runExclusive, notify, subscribe, close };
+}
+
+if (typeof module !== 'undefined' && module.exports) module.exports = createOutboxCoordinator;

frontend/review-sheet.js

@@ -309,6 +309,18 @@ async function copyAndContinue({ text, url, copy, open, fallback }) {
   return { copied: true, opened: true };
 }
 
+function prepareMergeContinuation({ storage, item, headSha, reviewed, decision }) {
+  const reasons = Array.isArray(item?.work_reasons) ? item.work_reasons : [];
+  if (decision !== 'approve' || !reasons.includes('assigned_to_me') || !headSha) return false;
+  const filenames = Array.isArray(reviewed)
+    ? reviewed.filter(filename => typeof filename === 'string' && filename)
+    : [];
+  const key = 'stackchain.pull-review.v1:' + item.repository + '#' + item.number + ':' + headSha;
+  try { storage?.setItem(key, JSON.stringify(filenames)); }
+  catch (_error) { return false; }
+  return true;
+}
+
 createReviewController.renderDiffFile = renderDiffFile;
 createReviewController.parseDiffLines = parseDiffLines;
 createReviewController.toggleDiff = toggleDiff;
@@ -316,6 +328,7 @@ createReviewController.createProgress = createProgress;
 createReviewController.createDraft = createDraft;
 createReviewController.formatFeedback = formatFeedback;
 createReviewController.copyAndContinue = copyAndContinue;
+createReviewController.prepareMergeContinuation = prepareMergeContinuation;
 
 if (typeof module !== 'undefined' && module.exports) {
   module.exports = createReviewController;

frontend/service-worker.js

@@ -0,0 +1,143 @@
+const BASE = new URL('./', self.location.href).pathname;
+importScripts(BASE + 'static/background-issue-sync.js');
+const CACHE = 'stackchain-dashboard-shell-v19';
+const OUTAGE_STATUSES = new Set([500, 502, 503, 504]);
+const SHELL = [
+  BASE,
+  BASE + 'manifest.webmanifest',
+  BASE + 'static/icons/stackchain-192.png',
+  BASE + 'static/icons/stackchain-512.png',
+  BASE + 'static/session.js',
+  BASE + 'static/markdown.js',
+  BASE + 'static/commands.js',
+  BASE + 'static/search-preview.js',
+  BASE + 'static/widgets.js',
+  BASE + 'static/drafts.js',
+  BASE + 'static/outbox-coordinator.js',
+  BASE + 'static/issue-outbox.js',
+  BASE + 'static/authored-outbox.js',
+  BASE + 'static/offline-work.js',
+  BASE + 'static/my-work.js',
+  BASE + 'static/later-work.js',
+  BASE + 'static/detail-defer.js',
+  BASE + 'static/pick-work.js',
+  BASE + 'static/conversation.js',
+  BASE + 'static/issue-sheet.js',
+  BASE + 'static/create-issue-sheet.js',
+  BASE + 'static/pull-sheet.js',
+  BASE + 'static/review-sheet.js',
+  BASE + 'static/work-route.js',
+  BASE + 'static/context-poller.js',
+  BASE + 'static/mobile-task-dock.js',
+  BASE + 'static/background-issue-sync.js',
+];
+
+async function sessionCsrf() {
+  const response = await fetch(new URL(BASE + 'api/v1/session', self.location.origin), {
+    headers: { Accept: 'application/json' },
+  });
+  if (!response.ok) return '';
+  const payload = await response.json().catch(() => ({}));
+  return typeof payload.csrf_token === 'string' ? payload.csrf_token : '';
+}
+
+async function fetchJson(url, options = {}) {
+  const requestOptions = { ...options };
+  const method = String(options.method || 'GET').toUpperCase();
+  if (!['GET', 'HEAD', 'OPTIONS'].includes(method)) {
+    const headers = new Headers(options.headers || {});
+    const csrf = await sessionCsrf();
+    if (csrf) headers.set('X-CSRF-Token', csrf);
+    requestOptions.headers = headers;
+  }
+  const response = await fetch(new URL(url, self.location.origin), requestOptions);
+  const payload = await response.json().catch(() => ({}));
+  if (!response.ok) {
+    const error = new Error(payload.error || payload.detail || 'Background issue delivery failed.');
+    error.status = response.status;
+    throw error;
+  }
+  return payload;
+}
+
+const issueSync = self.__issueSync || createBackgroundIssueSync({
+  store: createIssueSyncStore(), fetchJson, base: BASE,
+});
+
+async function flushAndNotify() {
+  const result = await issueSync.flush();
+  if (!result?.login || !result.receipts?.length ||
+      !await issueSync.getReceiptPreference?.(result.login)) return;
+  for (const receipt of result.receipts) {
+    const needsAttention = receipt.status === 'attention';
+    const title = needsAttention
+      ? 'Queued work needs attention'
+      : receipt.kind === 'issue' ? 'Queued issue created' : 'Queued message sent';
+    await self.registration.showNotification(title, {
+      body: needsAttention ? 'Tap to review it in Drafts.' : 'Tap to open it in Stackchain.',
+      tag: 'stackchain-delivery-' + receipt.id,
+      data: { route: receipt.route },
+    });
+  }
+}
+
+self.addEventListener('install', event => {
+  event.waitUntil(caches.open(CACHE).then(cache => cache.addAll(SHELL)).then(() => self.skipWaiting()));
+});
+
+self.addEventListener('activate', event => {
+  event.waitUntil(caches.keys().then(keys => Promise.all(
+    keys.filter(key => key.startsWith('stackchain-dashboard-') && key !== CACHE)
+      .map(key => caches.delete(key))
+  )).then(() => self.clients.claim()));
+});
+
+self.addEventListener('sync', event => {
+  if (event.tag === 'stackchain-issue-outbox-v1') event.waitUntil(flushAndNotify());
+});
+
+self.addEventListener('message', event => {
+  if (event.data?.type === 'stackchain-resume-outbox') event.waitUntil(flushAndNotify());
+});
+
+self.addEventListener('notificationclick', event => {
+  event.notification.close();
+  const route = String(event.notification.data?.route || '');
+  if (!route.startsWith('#/my-work/')) return;
+  const target = new URL(BASE + route, self.location.origin).href;
+  event.waitUntil((async () => {
+    const windows = await self.clients.matchAll({ type: 'window', includeUncontrolled: true });
+    const client = windows.find(candidate => candidate.url.startsWith(self.location.origin + BASE));
+    if (!client) return self.clients.openWindow(target);
+    if (client.navigate) await client.navigate(target);
+    return client.focus();
+  })());
+});
+
+self.addEventListener('fetch', event => {
+  const request = event.request;
+  if (request.method !== 'GET' || request.url.includes('/api/')) return;
+  const url = new URL(request.url);
+  if (url.origin !== self.location.origin || !url.pathname.startsWith(BASE)) return;
+  if (request.mode === 'navigate') {
+    event.respondWith(
+      fetch(request).then(async response => {
+        const cache = await caches.open(CACHE);
+        if (response.ok) {
+          await cache.put(BASE, response.clone());
+        } else if (OUTAGE_STATUSES.has(response.status)) {
+          const cached = await cache.match(BASE);
+          if (cached) return cached;
+        }
+        return response;
+      }).catch(async () => {
+        const cache = await caches.open(CACHE);
+        return cache.match(BASE);
+      })
+    );
+    return;
+  }
+  if (url.origin === self.location.origin && SHELL.includes(url.pathname)) {
+    event.respondWith(caches.match(request).then(cached => cached || fetch(request)));
+  }
+});

frontend/session.js

@@ -0,0 +1,101 @@
+(function (root, factory) {
+  if (typeof module !== 'undefined' && module.exports) module.exports = factory;
+  else {
+    const base = new URL('./', root.location.href).pathname;
+    const originalFetch = root.fetch.bind(root);
+    const boundary = factory({
+      cookie: () => root.document.cookie,
+      origin: root.location.origin,
+      base,
+      fetchImpl: originalFetch,
+      localStorage: root.localStorage,
+      sessionStorage: root.sessionStorage,
+      indexedDB: root.indexedDB,
+      caches: root.caches,
+      serviceWorker: root.navigator?.serviceWorker,
+      location: root.location,
+      onExpired: () => root.dispatchEvent(new CustomEvent('stackchain:session-expired')),
+    });
+    root.fetch = boundary.fetch;
+    const attach = () => {
+      const button = root.document.getElementById('sign-out');
+      if (button) button.addEventListener('click', () => boundary.signOut());
+      boundary.resumeQueuedWork();
+    };
+    if (root.document.readyState === 'loading') root.document.addEventListener('DOMContentLoaded', attach);
+    else attach();
+    root.stackchainSession = boundary;
+  }
+})(typeof window !== 'undefined' ? window : this, function createSessionBoundary({
+  cookie, origin, base, fetchImpl, localStorage, sessionStorage, indexedDB, caches, serviceWorker, location,
+  onExpired = () => {},
+}) {
+  const SAFE_METHODS = new Set(['GET', 'HEAD', 'OPTIONS']);
+
+  function csrfToken() {
+    const entry = String(cookie?.() || '').split(';')
+      .map(value => value.trim())
+      .find(value => value.startsWith('stackchain_csrf='));
+    return entry ? decodeURIComponent(entry.slice('stackchain_csrf='.length)) : '';
+  }
+
+  function isSameOrigin(input) {
+    try { return new URL(String(input?.url || input), origin).origin === origin; }
+    catch (_error) { return false; }
+  }
+
+  async function sessionFetch(input, options = {}) {
+    const method = String(options.method || input?.method || 'GET').toUpperCase();
+    const requestOptions = { ...options };
+    if (!SAFE_METHODS.has(method) && isSameOrigin(input)) {
+      const headers = new Headers(options.headers || input?.headers || {});
+      const csrf = csrfToken();
+      if (csrf) headers.set('X-CSRF-Token', csrf);
+      requestOptions.headers = headers;
+    }
+    const response = await fetchImpl(input, requestOptions);
+    if (response.status === 401) onExpired();
+    return response;
+  }
+
+  function removeDashboardStorage(storage) {
+    if (!storage) return;
+    const keys = [];
+    try {
+      for (let index = 0; index < storage.length; index += 1) {
+        const key = storage.key(index);
+        if (key?.startsWith('stackchain.')) keys.push(key);
+      }
+      keys.forEach(key => storage.removeItem(key));
+    } catch (_error) { /* Cookie invalidation still protects server data. */ }
+  }
+
+  async function clearPrivateDeviceData() {
+    removeDashboardStorage(localStorage);
+    if (sessionStorage !== localStorage) removeDashboardStorage(sessionStorage);
+    try { indexedDB?.deleteDatabase('stackchain-background-outbox-v1'); }
+    catch (_error) { /* Continue clearing other dashboard state. */ }
+    try {
+      const keys = await caches?.keys?.() || [];
+      await Promise.all(keys.filter(key => key.startsWith('stackchain-dashboard-')).map(key => caches.delete(key)));
+    } catch (_error) { /* A later service-worker activation can clear stale caches. */ }
+  }
+
+  async function signOut() {
+    try {
+      await sessionFetch(base + 'api/v1/session', { method: 'DELETE' });
+    } finally {
+      await clearPrivateDeviceData();
+      location.assign(base + 'login');
+    }
+  }
+
+  async function resumeQueuedWork() {
+    try {
+      const registration = await serviceWorker?.ready;
+      registration?.active?.postMessage({ type: 'stackchain-resume-outbox' });
+    } catch (_error) { /* Background Sync is optional; foreground delivery remains available. */ }
+  }
+
+  return { fetch: sessionFetch, signOut, clearPrivateDeviceData, resumeQueuedWork };
+});

src/dashboard_auth.py

@@ -0,0 +1,163 @@
+"""Signed, short-lived single-operator sessions for the dashboard boundary."""
+
+import asyncio
+import base64
+import hashlib
+import hmac
+import ipaddress
+import json
+import os
+import secrets
+import time
+from dataclasses import dataclass
+
+from fastapi import Request
+
+from src.session_store import SessionStore, SessionStoreError
+
+SESSION_COOKIE = "stackchain_session"
+CSRF_COOKIE = "stackchain_csrf"
+DEFAULT_TTL_SECONDS = 8 * 60 * 60
+MIN_SECRET_LENGTH = 24
+OPERATOR_MODE = "operator"
+INSECURE_LOCAL_MODE = "insecure-local"
+
+
+@dataclass(frozen=True)
+class Session:
+    session_id: str
+    csrf: str
+    expires_at: int
+
+
+def access_token() -> str:
+    return os.getenv("STACKCHAIN_DASHBOARD_ACCESS_TOKEN", "")
+
+
+def mode() -> str:
+    return os.getenv("STACKCHAIN_DASHBOARD_AUTH_MODE", OPERATOR_MODE).strip().lower()
+
+
+def configuration_error() -> str | None:
+    configured_mode = mode()
+    if configured_mode == INSECURE_LOCAL_MODE:
+        return None
+    if configured_mode != OPERATOR_MODE:
+        return "unsupported authentication mode"
+    operator_secret = access_token()
+    signing_secret = os.getenv("STACKCHAIN_DASHBOARD_SESSION_SECRET", "")
+    if len(operator_secret) < MIN_SECRET_LENGTH or len(signing_secret) < MIN_SECRET_LENGTH:
+        return "operator mode requires two sufficiently long secrets"
+    if hmac.compare_digest(operator_secret, signing_secret):
+        return "operator and session secrets must be independent"
+    return None
+
+
+def enabled() -> bool:
+    return mode() == OPERATOR_MODE and configuration_error() is None
+
+
+def is_loopback_request(request: Request) -> bool:
+    host = request.client.host if request.client else ""
+    try:
+        return ipaddress.ip_address(host).is_loopback
+    except ValueError:
+        return host == "localhost"
+
+
+def _secret() -> bytes:
+    configured = os.getenv("STACKCHAIN_DASHBOARD_SESSION_SECRET", "")
+    if configuration_error() is not None or mode() != OPERATOR_MODE:
+        raise RuntimeError("Dashboard authentication is not configured")
+    return configured.encode()
+
+
+def _encode(raw: bytes) -> str:
+    return base64.urlsafe_b64encode(raw).rstrip(b"=").decode()
+
+
+def _decode(value: str) -> bytes:
+    return base64.urlsafe_b64decode(value + "=" * (-len(value) % 4))
+
+
+def _session_store(now: int | None = None) -> SessionStore:
+    database = os.getenv(
+        "STACKCHAIN_SESSION_DB",
+        os.path.join(os.getenv("STACKCHAIN_STATE_DIR", ".stackchain-state"), "sessions.sqlite3"),
+    )
+    current = time.time if now is None else lambda: now
+    return SessionStore(database, clock=current)
+
+
+def issue_session(now: int | None = None) -> tuple[str, Session]:
+    issued_at = int(time.time() if now is None else now)
+    ttl = int(os.getenv("STACKCHAIN_DASHBOARD_SESSION_TTL_SECONDS", str(DEFAULT_TTL_SECONDS)))
+    session = Session(
+        session_id=secrets.token_urlsafe(32),
+        csrf=secrets.token_urlsafe(24),
+        expires_at=issued_at + max(1, ttl),
+    )
+    payload = json.dumps(
+        {"csrf": session.csrf, "exp": session.expires_at, "sid": session.session_id},
+        separators=(",", ":"),
+        sort_keys=True,
+    ).encode()
+    encoded = _encode(payload)
+    signature = _encode(hmac.new(_secret(), encoded.encode(), hashlib.sha256).digest())
+    _session_store(now).activate(session.session_id, session.expires_at)
+    return f"{encoded}.{signature}", session
+
+
+def verify_session(value: str | None, now: int | None = None) -> Session | None:
+    if not value or "." not in value or not enabled():
+        return None
+    encoded, supplied_signature = value.rsplit(".", 1)
+    expected = _encode(hmac.new(_secret(), encoded.encode(), hashlib.sha256).digest())
+    if not hmac.compare_digest(supplied_signature, expected):
+        return None
+    try:
+        payload = json.loads(_decode(encoded))
+        session = Session(
+            session_id=payload["sid"],
+            csrf=payload["csrf"],
+            expires_at=int(payload["exp"]),
+        )
+    except (ValueError, TypeError, KeyError, json.JSONDecodeError):
+        return None
+    current = int(time.time() if now is None else now)
+    if (
+        session.expires_at <= current
+        or not isinstance(session.session_id, str)
+        or not session.session_id
+        or not isinstance(session.csrf, str)
+        or not session.csrf
+    ):
+        return None
+    return session if _session_store(now).is_active(session.session_id, session.expires_at) else None
+
+
+def revoke_session(session: Session) -> None:
+    _session_store().revoke(session.session_id)
+
+
+async def request_session(request: Request) -> Session | None:
+    return await asyncio.to_thread(verify_session, request.cookies.get(SESSION_COOKIE))
+
+
+def cookie_path(request: Request) -> str:
+    root_path = request.scope.get("root_path", "").rstrip("/")
+    return root_path or "/"
+
+
+def application_path(request: Request) -> str:
+    path = request.url.path
+    root_path = request.scope.get("root_path", "").rstrip("/")
+    if root_path and (path == root_path or path.startswith(root_path + "/")):
+        return path[len(root_path):] or "/"
+    return path
+
+
+def same_origin(request: Request) -> bool:
+    origin = request.headers.get("origin", "")
+    expected = f"{request.url.scheme}://{request.url.netloc}"
+    return bool(origin) and hmac.compare_digest(origin.rstrip("/"), expected)

src/gitea_proxy.py

@@ -2,6 +2,7 @@ import asyncio
 import os
 import re
 import shlex
+from contextlib import asynccontextmanager
 from typing import Any
 from urllib.parse import urlsplit
 
@@ -12,7 +13,116 @@ GITEA_TOKEN = os.getenv("GITEA_TOKEN", "")
 REVIEW_DIFF_MAX_BYTES = 64 * 1024
 REVIEW_DIFF_MAX_LINES = 400
 AVAILABLE_ISSUE_PAGE_CONCURRENCY = 3
-_client: httpx.AsyncClient | None = None
+_client: "GiteaTransport | None" = None
+
+
+class GiteaOverloadedError(RuntimeError):
+    """Raised when bounded transport admission expires before capacity is available."""
+
+
+class GiteaTransport:
+    """Application-lifetime HTTP transport with single-flight concurrent reads."""
+
+    def __init__(
+        self,
+        *,
+        max_concurrency: int = 8,
+        admission_timeout: float = 0.25,
+        **kwargs,
+    ) -> None:
+        max_concurrency = max(2, max_concurrency)
+        admission_timeout = max(0.001, admission_timeout)
+        self._http = httpx.AsyncClient(base_url=GITEA_URL, timeout=10, **kwargs)
+        self.max_concurrency = max_concurrency
+        self.admission_timeout = admission_timeout
+        self._request_slots = asyncio.Semaphore(max(2, max_concurrency))
+        self._read_slots = asyncio.Semaphore(max(1, max_concurrency - 1))
+        self._reads: dict[tuple, asyncio.Task[httpx.Response]] = {}
+
+    @property
+    def is_closed(self) -> bool:
+        return self._http.is_closed
+
+    def _read_key(self, url: str, kwargs: dict) -> tuple:
+        params = tuple(httpx.QueryParams(kwargs.get("params", {})).multi_items())
+        headers = tuple(sorted(httpx.Headers(kwargs.get("headers", {})).multi_items()))
+        return url, params, headers
+
+    async def _acquire(self, semaphore: asyncio.Semaphore) -> None:
+        try:
+            await asyncio.wait_for(semaphore.acquire(), timeout=self.admission_timeout)
+        except TimeoutError as exc:
+            raise GiteaOverloadedError("Gitea transport is saturated") from exc
+
+    async def _perform_get(self, url: str, kwargs: dict) -> httpx.Response:
+        await self._acquire(self._read_slots)
+        try:
+            await self._acquire(self._request_slots)
+            try:
+                return await self._http.get(url, **kwargs)
+            finally:
+                self._request_slots.release()
+        finally:
+            self._read_slots.release()
+
+    async def get(self, url: str, **kwargs) -> httpx.Response:
+        key = self._read_key(url, kwargs)
+        task = self._reads.get(key)
+        if task is None:
+            task = asyncio.create_task(self._perform_get(url, kwargs))
+            self._reads[key] = task
+            task.add_done_callback(
+                lambda completed, request_key=key: (
+                    self._reads.pop(request_key, None)
+                    if self._reads.get(request_key) is completed else None
+                )
+            )
+        return await asyncio.shield(task)
+
+    async def _mutate(self, method: str, url: str, kwargs: dict) -> httpx.Response:
+        await self._acquire(self._request_slots)
+        try:
+            return await self._http.request(method, url, **kwargs)
+        finally:
+            self._request_slots.release()
+
+    async def post(self, url: str, **kwargs) -> httpx.Response:
+        return await self._mutate("POST", url, kwargs)
+
+    async def patch(self, url: str, **kwargs) -> httpx.Response:
+        return await self._mutate("PATCH", url, kwargs)
+
+    async def put(self, url: str, **kwargs) -> httpx.Response:
+        return await self._mutate("PUT", url, kwargs)
+
+    async def delete(self, url: str, **kwargs) -> httpx.Response:
+        return await self._mutate("DELETE", url, kwargs)
+
+    @asynccontextmanager
+    async def stream(self, method: str, url: str, **kwargs):
+        await self._acquire(self._read_slots)
+        try:
+            await self._acquire(self._request_slots)
+            try:
+                async with self._http.stream(method, url, **kwargs) as response:
+                    yield response
+            finally:
+                self._request_slots.release()
+        finally:
+            self._read_slots.release()
+
+    def __getattr__(self, name: str):
+        return getattr(self._http, name)
+
+    async def aclose(self) -> None:
+        tasks = list(self._reads.values())
+        for task in tasks:
+            if not task.done():
+                task.cancel()
+        if tasks:
+            await asyncio.gather(*tasks, return_exceptions=True)
+        self._reads.clear()
+        await self._http.aclose()
 
 
 class WorkItems(list[dict]):
@@ -58,14 +168,19 @@ def _auth() -> dict[str, str]:
     return headers
 
 
-def start_client(**kwargs) -> httpx.AsyncClient:
+def start_client(**kwargs) -> GiteaTransport:
     """Create the application-lifetime Gitea transport."""
     global _client
-    _client = httpx.AsyncClient(base_url=GITEA_URL, timeout=10, **kwargs)
+    kwargs.setdefault("max_concurrency", int(os.getenv("GITEA_MAX_CONCURRENCY", "8")))
+    kwargs.setdefault(
+        "admission_timeout",
+        float(os.getenv("GITEA_ADMISSION_TIMEOUT_SECONDS", "0.25")),
+    )
+    _client = GiteaTransport(**kwargs)
     return _client
 
 
-def _get_client() -> httpx.AsyncClient:
+def _get_client() -> GiteaTransport:
     if _client is None or _client.is_closed:
         return start_client()
     return _client
@@ -533,8 +648,30 @@ async def notification_detail(thread_id: int) -> dict:
     subject = subject_value if isinstance(subject_value, dict) else {}
     subject_path = _gitea_api_path(subject.get("url"))
     comment_path = _gitea_api_path(subject.get("latest_comment_url"))
-    subject_detail = await fetch(subject_path) if subject_path else {}
-    comment = await fetch(comment_path) if comment_path else {}
+    conversation_match = re.fullmatch(
+        r"repos/([^/]+/[^/]+)/(issues|pulls)/(\d+)", subject_path
+    )
+    repository_name = repository.get("full_name")
+    supported_conversation = (
+        conversation_match
+        and conversation_match.group(1) == repository_name
+        and subject.get("type") in {"Issue", "Pull"}
+    )
+    if supported_conversation:
+        assert conversation_match is not None
+        subject_detail, comment, conversation = 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))
+            ),
+        )
+    else:
+        subject_detail, comment, conversation = 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}),
+        )
     subject_detail = subject_detail if isinstance(subject_detail, dict) else {}
     comment = comment if isinstance(comment, dict) else {}
     user_value = comment.get("user")
@@ -573,9 +710,33 @@ async def notification_detail(thread_id: int) -> dict:
             else "",
             "url": latest_url,
         },
+        "conversation": conversation,
     }
 
 
+async def notification_conversation_page(
+    thread_id: int, page: int, limit: int = 20
+) -> dict:
+    thread = await fetch(f"notifications/threads/{thread_id}")
+    if not isinstance(thread, dict):
+        raise ValueError("Gitea notification thread response was not an object")
+    repository = thread.get("repository")
+    subject = thread.get("subject")
+    if not isinstance(repository, dict) or not isinstance(subject, dict):
+        raise ValueError("Notification does not identify a conversation")
+    subject_path = _gitea_api_path(subject.get("url"))
+    match = re.fullmatch(r"repos/([^/]+/[^/]+)/(issues|pulls)/(\d+)", subject_path)
+    if (
+        not match
+        or match.group(1) != repository.get("full_name")
+        or subject.get("type") not in {"Issue", "Pull"}
+    ):
+        raise ValueError("Notification subject is not a supported conversation")
+    return await issue_conversation_page(
+        match.group(1), int(match.group(3)), page=page, limit=limit
+    )
+
+
 async def reply_to_notification(thread_id: int, body: str) -> dict:
     thread = await fetch(f"notifications/threads/{thread_id}")
     if not isinstance(thread, dict):
@@ -604,10 +765,7 @@ async def reply_to_notification(thread_id: int, body: str) -> dict:
     comment = response.json()
     if not isinstance(comment, dict):
         raise ValueError("Gitea comment response was not an object")
-    return {
-        "id": comment.get("id"),
-        "url": _safe_web_url(comment.get("html_url")),
-    }
+    return _normalize_issue_comment(comment)
 
 
 async def close_issue(repository: str, number: int) -> dict:
@@ -708,10 +866,16 @@ async def create_issue(
     body: str,
     assignee: str,
     label_ids: list[int] | None = None,
+    milestone_id: int | None = None,
+    due_date: str | None = None,
 ) -> dict:
     payload: dict = {"title": title, "body": body, "assignee": assignee}
     if label_ids:
         payload["labels"] = label_ids
+    if milestone_id is not None:
+        payload["milestone"] = milestone_id
+    if due_date is not None:
+        payload["due_date"] = due_date
     response = await _get_client().post(
         f"/api/v1/repos/{repository}/issues",
         headers=_auth(),
@@ -732,6 +896,22 @@ async def create_issue(
         raise ValueError("Gitea did not confirm issue self-assignment")
     labels_value = issue.get("labels")
     labels = labels_value if isinstance(labels_value, list) else []
+    milestone_value = issue.get("milestone")
+    milestone = (
+        {"id": milestone_value["id"], "title": milestone_value["title"]}
+        if isinstance(milestone_value, dict)
+        and isinstance(milestone_value.get("id"), int)
+        and isinstance(milestone_value.get("title"), str)
+        else None
+    )
+    confirmed_due_date = (
+        issue.get("due_date") if isinstance(issue.get("due_date"), str) else None
+    )
+    if (
+        (milestone_id is not None and (milestone or {}).get("id") != milestone_id)
+        or (due_date is not None and confirmed_due_date != due_date)
+    ):
+        raise ValueError("Gitea did not confirm issue release plan")
     return {
         "id": issue.get("id"),
         "number": issue["number"],
@@ -748,6 +928,8 @@ async def create_issue(
             if isinstance(item, dict) and isinstance(item.get("name"), str)
         ],
         "assignees": confirmed_assignees,
+        "milestone": milestone,
+        "due_date": confirmed_due_date,
         "updated_at": issue.get("updated_at", "")
         if isinstance(issue.get("updated_at"), str)
         else "",

src/idempotency.py

@@ -12,6 +12,10 @@ class Reservation:
     response: Any = None
 
 
+class IdempotencyLedgerBusy(RuntimeError):
+    """Raised when a durable completion cannot acquire the SQLite write lock."""
+
+
 class IdempotencyLedger:
     """Small durable ledger for replaying successful Gitea mutations."""
 
@@ -21,18 +25,22 @@ class IdempotencyLedger:
         *,
         ttl_seconds: float,
         max_entries: int,
+        lock_timeout_seconds: float = 0.1,
         clock: Callable[[], float] = time.time,
     ) -> None:
         self.path = Path(path)
         self.ttl_seconds = ttl_seconds
         self.max_entries = max_entries
+        self.lock_timeout_seconds = lock_timeout_seconds
         self.clock = clock
         self.path.parent.mkdir(parents=True, exist_ok=True)
         self._initialize()
 
     def _connect(self) -> sqlite3.Connection:
-        connection = sqlite3.connect(self.path, timeout=5)
-        connection.execute("PRAGMA busy_timeout = 5000")
+        connection = sqlite3.connect(self.path, timeout=self.lock_timeout_seconds)
+        connection.execute(
+            f"PRAGMA busy_timeout = {max(1, int(self.lock_timeout_seconds * 1000))}"
+        )
         return connection
 
     def _initialize(self) -> None:
@@ -61,43 +69,48 @@ class IdempotencyLedger:
     def reserve(self, key: str, fingerprint: tuple[Any, ...]) -> Reservation:
         encoded = self._fingerprint(fingerprint)
         now = self.clock()
-        with self._connect() as connection:
-            connection.execute("BEGIN IMMEDIATE")
-            connection.execute(
-                "DELETE FROM idempotency_operations "
-                "WHERE status = 'completed' AND completed_at <= ?",
-                (now - self.ttl_seconds,),
-            )
-            row = connection.execute(
-                "SELECT fingerprint, status, response_json FROM idempotency_operations "
-                "WHERE key = ?",
-                (key,),
-            ).fetchone()
-            if row is not None:
-                if row[0] != encoded:
-                    return Reservation("conflict")
-                if row[1] == "completed":
-                    return Reservation("completed", json.loads(row[2]))
-                return Reservation("pending")
-            count = connection.execute(
-                "SELECT COUNT(*) FROM idempotency_operations"
-            ).fetchone()[0]
-            if count >= self.max_entries:
-                completed = connection.execute(
-                    "SELECT key FROM idempotency_operations "
-                    "WHERE status = 'completed' ORDER BY completed_at, rowid LIMIT 1"
-                ).fetchone()
-                if completed is None:
-                    return Reservation("busy")
+        try:
+            with self._connect() as connection:
+                connection.execute("BEGIN IMMEDIATE")
                 connection.execute(
-                    "DELETE FROM idempotency_operations WHERE key = ?",
-                    (completed[0],),
+                    "DELETE FROM idempotency_operations "
+                    "WHERE status = 'completed' AND completed_at <= ?",
+                    (now - self.ttl_seconds,),
                 )
-            connection.execute(
-                "INSERT INTO idempotency_operations "
-                "(key, fingerprint, status, created_at) VALUES (?, ?, 'pending', ?)",
-                (key, encoded, now),
-            )
+                row = connection.execute(
+                    "SELECT fingerprint, status, response_json FROM idempotency_operations "
+                    "WHERE key = ?",
+                    (key,),
+                ).fetchone()
+                if row is not None:
+                    if row[0] != encoded:
+                        return Reservation("conflict")
+                    if row[1] == "completed":
+                        return Reservation("completed", json.loads(row[2]))
+                    return Reservation("pending")
+                count = connection.execute(
+                    "SELECT COUNT(*) FROM idempotency_operations"
+                ).fetchone()[0]
+                if count >= self.max_entries:
+                    completed = connection.execute(
+                        "SELECT key FROM idempotency_operations "
+                        "WHERE status = 'completed' ORDER BY completed_at, rowid LIMIT 1"
+                    ).fetchone()
+                    if completed is None:
+                        return Reservation("busy")
+                    connection.execute(
+                        "DELETE FROM idempotency_operations WHERE key = ?",
+                        (completed[0],),
+                    )
+                connection.execute(
+                    "INSERT INTO idempotency_operations "
+                    "(key, fingerprint, status, created_at) VALUES (?, ?, 'pending', ?)",
+                    (key, encoded, now),
+                )
+        except sqlite3.OperationalError as exc:
+            if "locked" in str(exc).lower() or "busy" in str(exc).lower():
+                return Reservation("busy")
+            raise
         return Reservation("reserved")
 
     def clear(self) -> None:
@@ -106,9 +119,14 @@ class IdempotencyLedger:
 
     def complete(self, key: str, response: Any) -> None:
         encoded = json.dumps(response, separators=(",", ":"), sort_keys=True)
-        with self._connect() as connection:
-            connection.execute(
-                "UPDATE idempotency_operations SET status = 'completed', "
-                "response_json = ?, completed_at = ? WHERE key = ?",
-                (encoded, self.clock(), key),
-            )
+        try:
+            with self._connect() as connection:
+                connection.execute(
+                    "UPDATE idempotency_operations SET status = 'completed', "
+                    "response_json = ?, completed_at = ? WHERE key = ?",
+                    (encoded, self.clock(), key),
+                )
+        except sqlite3.OperationalError as exc:
+            if "locked" in str(exc).lower() or "busy" in str(exc).lower():
+                raise IdempotencyLedgerBusy from exc
+            raise

src/login_attempt_store.py

@@ -0,0 +1,149 @@
+"""Durable throttling state for operator sign-in attempts."""
+
+import hashlib
+import ipaddress
+import math
+import sqlite3
+from pathlib import Path
+from typing import Callable
+
+
+class LoginAttemptStoreError(RuntimeError):
+    """Raised when sign-in throttling state cannot be accessed safely."""
+
+
+def client_source(peer_host: str, forwarded_for: str, trusted_proxy_cidrs: str) -> str:
+    """Resolve a canonical client IP without trusting arbitrary forwarding headers."""
+    try:
+        peer = ipaddress.ip_address(peer_host)
+        trusted = [
+            ipaddress.ip_network(value.strip())
+            for value in trusted_proxy_cidrs.split(",")
+            if value.strip()
+        ]
+    except ValueError:
+        return peer_host
+    if not any(peer in network for network in trusted):
+        return str(peer)
+    try:
+        forwarded = [
+            ipaddress.ip_address(value.strip())
+            for value in forwarded_for.split(",")
+            if value.strip()
+        ]
+    except ValueError:
+        return str(peer)
+    for address in reversed(forwarded):
+        if not any(address in network for network in trusted):
+            return str(address)
+    return str(forwarded[0]) if forwarded else str(peer)
+
+
+class LoginAttemptStore:
+    def __init__(
+        self,
+        path: str | Path,
+        *,
+        clock: Callable[[], float],
+        max_failures: int,
+        window_seconds: int,
+        max_entries: int = 10_000,
+        lock_timeout_seconds: float = 0.1,
+    ) -> None:
+        self.path = Path(path)
+        self.clock = clock
+        self.max_failures = max(1, max_failures)
+        self.window_seconds = max(1, window_seconds)
+        self.max_entries = max(1, max_entries)
+        self.lock_timeout_seconds = lock_timeout_seconds
+
+    @staticmethod
+    def _digest(source: str) -> str:
+        return hashlib.sha256(source.encode()).hexdigest()
+
+    def _connect(self) -> sqlite3.Connection:
+        try:
+            self.path.parent.mkdir(parents=True, exist_ok=True)
+            connection = sqlite3.connect(self.path, timeout=self.lock_timeout_seconds)
+            connection.execute(
+                """
+                CREATE TABLE IF NOT EXISTS login_attempts (
+                    source_hash TEXT PRIMARY KEY,
+                    failures INTEGER NOT NULL,
+                    window_started_at REAL NOT NULL
+                )
+                """
+            )
+            return connection
+        except (OSError, sqlite3.Error) as exc:
+            raise LoginAttemptStoreError(
+                "Sign-in throttling is temporarily unavailable"
+            ) from exc
+
+    def retry_after(self, source: str) -> int:
+        now = self.clock()
+        try:
+            with self._connect() as connection:
+                row = connection.execute(
+                    "SELECT failures, window_started_at FROM login_attempts WHERE source_hash = ?",
+                    (self._digest(source),),
+                ).fetchone()
+        except (OSError, sqlite3.Error) as exc:
+            raise LoginAttemptStoreError(
+                "Sign-in throttling is temporarily unavailable"
+            ) from exc
+        if row is None or row[0] < self.max_failures:
+            return 0
+        remaining = row[1] + self.window_seconds - now
+        return max(0, math.ceil(remaining))
+
+    def record_failure(self, source: str) -> None:
+        now = self.clock()
+        source_hash = self._digest(source)
+        try:
+            with self._connect() as connection:
+                connection.execute("BEGIN IMMEDIATE")
+                connection.execute(
+                    "DELETE FROM login_attempts WHERE window_started_at + ? <= ?",
+                    (self.window_seconds, now),
+                )
+                row = connection.execute(
+                    "SELECT failures, window_started_at FROM login_attempts WHERE source_hash = ?",
+                    (source_hash,),
+                ).fetchone()
+                if row is None or row[1] + self.window_seconds <= now:
+                    connection.execute(
+                        "INSERT OR REPLACE INTO login_attempts VALUES (?, 1, ?)",
+                        (source_hash, now),
+                    )
+                else:
+                    connection.execute(
+                        "UPDATE login_attempts SET failures = failures + 1 WHERE source_hash = ?",
+                        (source_hash,),
+                    )
+                connection.execute(
+                    """
+                    DELETE FROM login_attempts
+                    WHERE source_hash NOT IN (
+                        SELECT source_hash FROM login_attempts
+                        ORDER BY window_started_at DESC, rowid DESC LIMIT ?
+                    )
+                    """,
+                    (self.max_entries,),
+                )
+        except (OSError, sqlite3.Error) as exc:
+            raise LoginAttemptStoreError(
+                "Sign-in throttling is temporarily unavailable"
+            ) from exc
+
+    def clear(self, source: str) -> None:
+        try:
+            with self._connect() as connection:
+                connection.execute(
+                    "DELETE FROM login_attempts WHERE source_hash = ?",
+                    (self._digest(source),),
+                )
+        except (OSError, sqlite3.Error) as exc:
+            raise LoginAttemptStoreError(
+                "Sign-in throttling is temporarily unavailable"
+            ) from exc

src/main.py

@@ -1,18 +1,20 @@
 import asyncio
+import hmac
 import math
 import os
 import time
 from collections.abc import Awaitable, Coroutine
 from contextlib import asynccontextmanager
+from datetime import datetime
 from pathlib import Path
 from typing import Any, Literal
 
-from fastapi import FastAPI, Header, HTTPException, Path as PathParam, Query
-from fastapi.responses import JSONResponse
+from fastapi import FastAPI, Header, HTTPException, Path as PathParam, Query, Request, Response
+from fastapi.responses import JSONResponse, RedirectResponse
 from fastapi.staticfiles import StaticFiles
 from pydantic import BaseModel, Field, PositiveInt, field_validator, model_validator
 
-from src import gitea_proxy
+from src import dashboard_auth, gitea_proxy
 from src.gitea_proxy import (
     activity_events,
     current_user,
@@ -25,7 +27,8 @@ from src.gitea_proxy import (
     pull_review_detail,
     repos,
 )
-from src.idempotency import IdempotencyLedger
+from src.idempotency import IdempotencyLedger, IdempotencyLedgerBusy
+from src.login_attempt_store import LoginAttemptStore, LoginAttemptStoreError, client_source
 from src.models import Issue, Milestone, PullRequest, Repo, User
 from src.suggestion_engine import compute
 from src.views import router as frontend_router
@@ -65,6 +68,9 @@ ISSUE_CREATION_IDEMPOTENCY_TTL_SECONDS = 600.0
 ISSUE_CREATION_IDEMPOTENCY_MAX_ENTRIES = 256
 AUTHORED_ACTION_IDEMPOTENCY_TTL_SECONDS = 600.0
 AUTHORED_ACTION_IDEMPOTENCY_MAX_ENTRIES = 256
+AUTHORED_ACTION_LEDGER_LOCK_TIMEOUT_SECONDS = float(
+    os.getenv("STACKCHAIN_IDEMPOTENCY_LOCK_TIMEOUT_SECONDS", "0.1")
+)
 NOTIFICATION_MUTATION_TIMEOUT_SECONDS = 5.0
 NOTIFICATION_PAGE_TIMEOUT_SECONDS = 5.0
 WORK_PAGE_TIMEOUT_SECONDS = 5.0
@@ -104,6 +110,7 @@ _idempotency_ledger = IdempotencyLedger(
         AUTHORED_ACTION_IDEMPOTENCY_MAX_ENTRIES
         + ISSUE_CREATION_IDEMPOTENCY_MAX_ENTRIES
     ),
+    lock_timeout_seconds=AUTHORED_ACTION_LEDGER_LOCK_TIMEOUT_SECONDS,
 )
 _available_issue_snapshot_task: asyncio.Task | None = None
 _available_issue_snapshot_value: list[dict] | None = None
@@ -119,6 +126,24 @@ class ReadinessPayloadError(ValueError):
     """Raised when Gitea returns a structurally invalid readiness payload."""
 
 
+class DashboardSignIn(BaseModel):
+    access_token: str = Field(min_length=1, max_length=1_024)
+
+
+def _login_attempt_store() -> LoginAttemptStore:
+    state_dir = os.getenv("STACKCHAIN_STATE_DIR", ".stackchain-state")
+    return LoginAttemptStore(
+        os.getenv(
+            "STACKCHAIN_LOGIN_ATTEMPT_DB",
+            os.path.join(state_dir, "login-attempts.sqlite3"),
+        ),
+        clock=time.time,
+        max_failures=int(os.getenv("STACKCHAIN_LOGIN_MAX_FAILURES", "5")),
+        window_seconds=int(os.getenv("STACKCHAIN_LOGIN_WINDOW_SECONDS", "300")),
+        max_entries=int(os.getenv("STACKCHAIN_LOGIN_MAX_ENTRIES", "10000")),
+    )
+
+
 class NotificationReadBatch(BaseModel):
     ids: list[PositiveInt] = Field(min_length=1, max_length=50)
 
@@ -151,6 +176,12 @@ class IssueCreation(BaseModel):
     title: str = Field(min_length=1, max_length=255)
     body: str = Field(default="", max_length=10_000)
     label_ids: list[int] = Field(default_factory=list, max_length=20)
+    milestone_id: PositiveInt | None = None
+    due_date: str | None = Field(
+        default=None,
+        pattern=r"^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}Z$",
+        max_length=20,
+    )
 
     @field_validator("title")
     @classmethod
@@ -165,6 +196,13 @@ class IssueCreation(BaseModel):
     def strip_issue_body(cls, value: str) -> str:
         return value.strip()
 
+    @field_validator("due_date")
+    @classmethod
+    def validate_due_date(cls, value: str | None) -> str | None:
+        if value is not None:
+            datetime.strptime(value, "%Y-%m-%dT%H:%M:%SZ")
+        return value
+
 
 class IssueContentUpdate(BaseModel):
     title: str = Field(min_length=1, max_length=255)
@@ -250,7 +288,9 @@ async def _run_idempotent_authored_action(
     if not idempotency_key:
         return await asyncio.wait_for(operation, timeout=timeout)
 
-    reservation = _idempotency_ledger.reserve(idempotency_key, fingerprint)
+    reservation = await asyncio.to_thread(
+        _idempotency_ledger.reserve, idempotency_key, fingerprint
+    )
     if reservation.state == "conflict":
         operation.close()
         raise HTTPException(status_code=409, detail="Idempotency key already used")
@@ -280,7 +320,7 @@ async def _run_idempotent_authored_action(
     else:
         async def persist_result():
             result = await operation
-            _idempotency_ledger.complete(idempotency_key, result)
+            await asyncio.to_thread(_idempotency_ledger.complete, idempotency_key, result)
             return result
 
         task = asyncio.create_task(persist_result())
@@ -296,7 +336,14 @@ async def _run_idempotent_authored_action(
                 _authored_action_operations.pop(idempotency_key, None)
 
         task.add_done_callback(discard_completed)
-    return await asyncio.wait_for(asyncio.shield(task), timeout=timeout)
+    try:
+        return await asyncio.wait_for(asyncio.shield(task), timeout=timeout)
+    except IdempotencyLedgerBusy:
+        raise HTTPException(
+            status_code=503,
+            detail="This action may have completed; verify its result before retrying",
+            headers={"Retry-After": "5"},
+        )
 
 
 def _context_payload(user_data, repo_data, issues_data, prs_data) -> dict:
@@ -396,21 +443,88 @@ app.mount("/static", StaticFiles(directory=FRONTEND_DIR), name="static")
 app.include_router(frontend_router)
 
 
+@app.middleware("http")
+async def require_operator_session(request: Request, call_next):
+    path = dashboard_auth.application_path(request)
+    if path == "/healthz":
+        return await call_next(request)
+
+    if dashboard_auth.configuration_error() is not None:
+        return JSONResponse(
+            {"detail": "Dashboard authentication is not configured"},
+            status_code=503,
+            headers={"Cache-Control": "no-store"},
+        )
+
+    if dashboard_auth.mode() == dashboard_auth.INSECURE_LOCAL_MODE:
+        if not dashboard_auth.is_loopback_request(request):
+            return JSONResponse(
+                {"detail": "Insecure local mode requires a loopback client"},
+                status_code=403,
+                headers={"Cache-Control": "no-store"},
+            )
+        return await call_next(request)
+
+    public = (
+        path in {"/healthz", "/readyz", "/login", "/manifest.webmanifest"}
+        or path.startswith("/static/")
+        or (path == "/api/v1/session" and request.method == "POST")
+    )
+    session = None
+    if not public:
+        try:
+            session = await dashboard_auth.request_session(request)
+        except dashboard_auth.SessionStoreError:
+            return JSONResponse(
+                {"detail": "Session registry is temporarily unavailable"},
+                status_code=503,
+                headers={"Cache-Control": "no-store"},
+            )
+    if not public and session is None:
+        if path.startswith("/api/"):
+            return JSONResponse(
+                {"detail": "Authentication required"},
+                status_code=401,
+                headers={"Cache-Control": "no-store"},
+            )
+        return RedirectResponse("login", status_code=303, headers={"Cache-Control": "no-store"})
+
+    if not public and request.method not in {"GET", "HEAD", "OPTIONS"}:
+        supplied_csrf = request.headers.get("x-csrf-token", "")
+        if (
+            session is None
+            or not dashboard_auth.same_origin(request)
+            or not supplied_csrf
+            or not hmac.compare_digest(supplied_csrf, session.csrf)
+        ):
+            return JSONResponse(
+                {"detail": "Valid same-origin CSRF proof required"},
+                status_code=403,
+                headers={"Cache-Control": "no-store"},
+            )
+    request.state.dashboard_session = session
+    response = await call_next(request)
+    if path in {"/login", "/api/v1/session"}:
+        response.headers["Cache-Control"] = "no-store"
+    return response
+
+
 @app.middleware("http")
 async def prevent_live_api_caching(request, call_next):
     response = await call_next(request)
-    if request.url.path in {"/api/v1/context", "/api/v1/events", "/api/v1/live", "/api/v1/available-issues", "/api/v1/search", "/api/v1/work-route"} or request.url.path.startswith("/api/v1/work/") or (
-        request.url.path.startswith("/api/v1/repos/")
-        and request.url.path.endswith("/review")
-    ) or request.url.path.startswith("/api/v1/notifications") or (
-        request.url.path.startswith("/api/v1/repos/")
-        and ("/issues/" in request.url.path or "/pulls/" in request.url.path)
+    path = dashboard_auth.application_path(request)
+    if path in {"/api/v1/context", "/api/v1/background-identity", "/api/v1/events", "/api/v1/live", "/api/v1/available-issues", "/api/v1/search", "/api/v1/work-route"} or path.startswith("/api/v1/work/") or (
+        path.startswith("/api/v1/repos/")
+        and path.endswith("/review")
+    ) or path.startswith("/api/v1/notifications") or (
+        path.startswith("/api/v1/repos/")
+        and ("/issues/" in path or "/pulls/" in path)
     ) or (
-        request.url.path.startswith("/api/v1/repos/")
-        and request.url.path.endswith("/issues")
+        path.startswith("/api/v1/repos/")
+        and path.endswith("/issues")
     ) or (
-        request.url.path.startswith("/api/v1/repos/")
-        and request.url.path.endswith(("/labels", "/milestones"))
+        path.startswith("/api/v1/repos/")
+        and path.endswith(("/labels", "/milestones"))
     ):
         response.headers["Cache-Control"] = "no-store"
     return response
@@ -422,6 +536,124 @@ def health() -> dict[str, str]:
     return {"status": "ok", "service": "stackchain-dashboard"}
 
 
+@app.post("/api/v1/session")
+async def sign_in(payload: DashboardSignIn, request: Request, response: Response):
+    peer_host = request.client.host if request.client is not None else "unknown"
+    source = client_source(
+        peer_host,
+        request.headers.get("x-forwarded-for", ""),
+        os.getenv("STACKCHAIN_TRUSTED_PROXY_CIDRS", ""),
+    )
+    attempts = _login_attempt_store()
+    try:
+        retry_after = attempts.retry_after(source)
+    except LoginAttemptStoreError:
+        return JSONResponse(
+            {"detail": "Sign-in throttling is temporarily unavailable"},
+            status_code=503,
+            headers={"Cache-Control": "no-store"},
+        )
+    if retry_after:
+        return JSONResponse(
+            {"detail": "Too many sign-in attempts"},
+            status_code=429,
+            headers={
+                "Cache-Control": "no-store",
+                "Retry-After": str(retry_after),
+            },
+        )
+    configured_token = dashboard_auth.access_token()
+    if not configured_token or not hmac.compare_digest(
+        payload.access_token, configured_token
+    ):
+        try:
+            attempts.record_failure(source)
+        except LoginAttemptStoreError:
+            return JSONResponse(
+                {"detail": "Sign-in throttling is temporarily unavailable"},
+                status_code=503,
+                headers={"Cache-Control": "no-store"},
+            )
+        raise HTTPException(status_code=401, detail="Invalid access token")
+    try:
+        attempts.clear(source)
+    except LoginAttemptStoreError:
+        return JSONResponse(
+            {"detail": "Sign-in throttling is temporarily unavailable"},
+            status_code=503,
+            headers={"Cache-Control": "no-store"},
+        )
+    try:
+        signed, session = dashboard_auth.issue_session()
+    except dashboard_auth.SessionStoreError:
+        return JSONResponse(
+            {"detail": "Session registry is temporarily unavailable"},
+            status_code=503,
+            headers={"Cache-Control": "no-store"},
+        )
+    path = dashboard_auth.cookie_path(request)
+    max_age = max(1, session.expires_at - int(time.time()))
+    response.set_cookie(
+        dashboard_auth.SESSION_COOKIE,
+        signed,
+        max_age=max_age,
+        path=path,
+        secure=True,
+        httponly=True,
+        samesite="strict",
+    )
+    response.set_cookie(
+        dashboard_auth.CSRF_COOKIE,
+        session.csrf,
+        max_age=max_age,
+        path=path,
+        secure=True,
+        httponly=False,
+        samesite="strict",
+    )
+    response.headers["Cache-Control"] = "no-store"
+    return {"authenticated": True}
+
+
+@app.get("/api/v1/session")
+async def session_status(request: Request):
+    session = request.state.dashboard_session
+    return {
+        "authenticated": session is not None,
+        "csrf_token": session.csrf if session is not None else "",
+    }
+
+
+@app.delete("/api/v1/session")
+async def sign_out(request: Request, response: Response):
+    session = request.state.dashboard_session
+    try:
+        dashboard_auth.revoke_session(session)
+    except dashboard_auth.SessionStoreError:
+        return JSONResponse(
+            {"detail": "Session registry is temporarily unavailable"},
+            status_code=503,
+            headers={"Cache-Control": "no-store"},
+        )
+    path = dashboard_auth.cookie_path(request)
+    response.delete_cookie(
+        dashboard_auth.SESSION_COOKIE,
+        path=path,
+        secure=True,
+        httponly=True,
+        samesite="strict",
+    )
+    response.delete_cookie(
+        dashboard_auth.CSRF_COOKIE,
+        path=path,
+        secure=True,
+        httponly=False,
+        samesite="strict",
+    )
+    response.headers["Cache-Control"] = "no-store"
+    return {"authenticated": False, "clear_private_device_data": True}
+
+
 @app.get("/readyz")
 async def readiness():
     """Return readiness after verifying the configured Gitea connection."""
@@ -455,11 +687,13 @@ async def readiness():
                 "Retry-After": str(max(1, math.ceil(READINESS_TIMEOUT_SECONDS)))
             } if timed_out else None,
         )
-    return {
+    payload = {
         "status": "ready",
         "service": "stackchain-dashboard",
-        "gitea_user": user["login"],
     }
+    if not dashboard_auth.enabled():
+        payload["gitea_user"] = user["login"]
+    return payload
 
 
 @app.get("/api/v1/context")
@@ -506,6 +740,23 @@ async def context() -> JSONResponse:
     return JSONResponse(_context_payload(user_data, repo_data, issues_data, prs_data))
 
 
+@app.get("/api/v1/background-identity")
+async def background_identity() -> JSONResponse:
+    """Return only the account key required to safely drain a browser outbox."""
+    try:
+        user = await current_user()
+        login = user.get("login") if isinstance(user, dict) else None
+        if not isinstance(login, str) or not login.strip():
+            raise ValueError("Gitea user response did not include a login")
+    except Exception:
+        return JSONResponse(
+            {"error": "Gitea identity is temporarily unavailable"},
+            status_code=503,
+            headers={"Retry-After": "1"},
+        )
+    return JSONResponse({"login": login})
+
+
 @app.get("/api/v1/search")
 async def global_search(
     q: str = Query(min_length=2, max_length=100),
@@ -1095,6 +1346,32 @@ async def notification_thread_detail(
     return JSONResponse(result)
 
 
+@app.get("/api/v1/notifications/{thread_id}/conversation")
+async def notification_thread_conversation(
+    thread_id: int = PathParam(gt=0),
+    page: int = Query(ge=1),
+    limit: int = Query(default=20, ge=1, le=50),
+) -> JSONResponse:
+    try:
+        result = await asyncio.wait_for(
+            gitea_proxy.notification_conversation_page(thread_id, page, limit),
+            timeout=NOTIFICATION_DETAIL_TIMEOUT_SECONDS,
+        )
+    except TimeoutError:
+        return JSONResponse(
+            {"error": "Loading older messages timed out. Please retry."},
+            status_code=503,
+            headers={"Retry-After": "1"},
+        )
+    except Exception:
+        return JSONResponse(
+            {"error": "Older messages are temporarily unavailable. Please retry."},
+            status_code=503,
+            headers={"Retry-After": "1"},
+        )
+    return JSONResponse(result)
+
+
 @app.patch("/api/v1/notifications/{thread_id}/read")
 async def read_notification(thread_id: int = PathParam(gt=0)) -> JSONResponse:
     try:
@@ -1413,6 +1690,27 @@ async def create_assigned_issue(
             }
             if any(label_id not in valid_label_ids for label_id in creation.label_ids):
                 raise HTTPException(status_code=422, detail="Unknown repository label")
+        if creation.milestone_id is not None:
+            available_milestones = await gitea_proxy.repo_milestones(repository)
+            valid_milestone_ids = {
+                item.get("id")
+                for item in available_milestones
+                if isinstance(item, dict) and isinstance(item.get("id"), int)
+            }
+            if creation.milestone_id not in valid_milestone_ids:
+                raise HTTPException(
+                    status_code=422, detail="Unknown open repository milestone"
+                )
+        if creation.milestone_id is not None or creation.due_date is not None:
+            return await gitea_proxy.create_issue(
+                repository,
+                creation.title,
+                creation.body,
+                login,
+                creation.label_ids,
+                creation.milestone_id,
+                creation.due_date,
+            )
         return await gitea_proxy.create_issue(
             repository, creation.title, creation.body, login, creation.label_ids
         )
@@ -1427,6 +1725,8 @@ async def create_assigned_issue(
                 creation.title,
                 creation.body,
                 tuple(creation.label_ids),
+                creation.milestone_id,
+                creation.due_date,
             ),
             timeout=ISSUE_ACTION_TIMEOUT_SECONDS,
         )

src/session_store.py

@@ -0,0 +1,88 @@
+"""Durable active-session registry used to revoke signed operator sessions."""
+
+import hashlib
+import sqlite3
+from pathlib import Path
+from typing import Callable
+
+
+class SessionStoreError(RuntimeError):
+    """Raised when session state cannot be read or changed safely."""
+
+
+class SessionStore:
+    def __init__(
+        self,
+        path: str | Path,
+        *,
+        clock: Callable[[], float],
+        lock_timeout_seconds: float = 0.1,
+    ) -> None:
+        self.path = Path(path)
+        self.clock = clock
+        self.lock_timeout_seconds = lock_timeout_seconds
+
+    @staticmethod
+    def _digest(session_id: str) -> str:
+        return hashlib.sha256(session_id.encode()).hexdigest()
+
+    def _connect(self, *, initialize: bool = False) -> sqlite3.Connection:
+        try:
+            if initialize:
+                self.path.parent.mkdir(parents=True, exist_ok=True)
+                connection = sqlite3.connect(
+                    self.path, timeout=self.lock_timeout_seconds
+                )
+            else:
+                connection = sqlite3.connect(
+                    f"{self.path.resolve().as_uri()}?mode=rw",
+                    timeout=self.lock_timeout_seconds,
+                    uri=True,
+                )
+            if initialize:
+                connection.execute(
+                    """
+                    CREATE TABLE IF NOT EXISTS active_sessions (
+                        session_hash TEXT PRIMARY KEY,
+                        expires_at INTEGER NOT NULL
+                    )
+                    """
+                )
+            return connection
+        except (OSError, sqlite3.Error) as exc:
+            raise SessionStoreError("Session registry is temporarily unavailable") from exc
+
+    def activate(self, session_id: str, expires_at: int) -> None:
+        try:
+            with self._connect(initialize=True) as connection:
+                connection.execute(
+                    "DELETE FROM active_sessions WHERE expires_at <= ?", (int(self.clock()),)
+                )
+                connection.execute(
+                    "INSERT INTO active_sessions(session_hash, expires_at) VALUES (?, ?)",
+                    (self._digest(session_id), expires_at),
+                )
+        except (OSError, sqlite3.Error) as exc:
+            raise SessionStoreError("Session registry is temporarily unavailable") from exc
+
+    def is_active(self, session_id: str, expires_at: int) -> bool:
+        now = int(self.clock())
+        try:
+            with self._connect() as connection:
+                row = connection.execute(
+                    "SELECT expires_at FROM active_sessions WHERE session_hash = ?",
+                    (self._digest(session_id),),
+                ).fetchone()
+        except (OSError, sqlite3.Error) as exc:
+            raise SessionStoreError("Session registry is temporarily unavailable") from exc
+        return row is not None and row[0] == expires_at and expires_at > now
+
+    def revoke(self, session_id: str) -> None:
+        try:
+            with self._connect() as connection:
+                connection.execute(
+                    "DELETE FROM active_sessions WHERE session_hash = ?",
+                    (self._digest(session_id),),
+                )
+        except (OSError, sqlite3.Error) as exc:
+            raise SessionStoreError("Session registry is temporarily unavailable") from exc

src/views.py

@@ -1,12 +1,48 @@
 from pathlib import Path
 
 from fastapi import APIRouter
-from fastapi.responses import HTMLResponse
+from fastapi.responses import FileResponse, HTMLResponse
 
 router = APIRouter()
 DASHBOARD_FILE = Path(__file__).resolve().parent.parent / "frontend" / "index.html"
+MANIFEST_FILE = DASHBOARD_FILE.parent / "manifest.webmanifest"
+SERVICE_WORKER_FILE = DASHBOARD_FILE.parent / "service-worker.js"
+
+LOGIN_HTML = """<!doctype html>
+<html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1">
+<title>Sign in · Stackchain Dashboard</title>
+<style>body{margin:0;background:#07111f;color:#eef6ff;font:16px system-ui;display:grid;min-height:100vh;place-items:center}main{box-sizing:border-box;width:min(90vw,24rem);padding:2rem;border:1px solid #29415d;border-radius:1rem;background:#0d1b2b}label,input,button{display:block;width:100%;box-sizing:border-box}input,button{min-height:48px;margin-top:.6rem;border-radius:.6rem;border:1px solid #49647f;padding:.75rem}button{margin-top:1rem;background:#55d6be;color:#06121b;font-weight:700}p{color:#a9bed3}</style></head>
+<body><main><h1>Operator sign in</h1><p>Enter the dashboard access token. It is exchanged for a private, short-lived session and is never stored on this device.</p>
+<form id="sign-in"><label>Access token<input name="access_token" type="password" autocomplete="current-password" required></label><button id="submit-sign-in">Sign in</button><p id="status" role="status"></p></form></main>
+<script src="static/login.js"></script></body></html>"""
 
 
-@router.get("/", response_class=HTMLResponse)
+class RevalidatingHTMLResponse(HTMLResponse):
+    def __init__(self, content, status_code=200, headers=None, media_type=None, background=None):
+        response_headers = dict(headers or {})
+        response_headers["Cache-Control"] = "no-cache"
+        super().__init__(content, status_code, response_headers, media_type, background)
+
+
+@router.get("/", response_class=RevalidatingHTMLResponse)
 async def dashboard() -> str:
     return DASHBOARD_FILE.read_text()
+
+
+@router.get("/login", response_class=RevalidatingHTMLResponse)
+async def login() -> str:
+    return LOGIN_HTML
+
+
+@router.get("/manifest.webmanifest", response_class=FileResponse)
+async def web_app_manifest() -> FileResponse:
+    return FileResponse(MANIFEST_FILE, media_type="application/manifest+json")
+
+
+@router.get("/service-worker.js", response_class=FileResponse)
+async def service_worker() -> FileResponse:
+    return FileResponse(
+        SERVICE_WORKER_FILE,
+        media_type="application/javascript",
+        headers={"Service-Worker-Allowed": "/", "Cache-Control": "no-cache"},
+    )

tests/test_authored_idempotency.py

@@ -1,4 +1,7 @@
 import asyncio
+import sqlite3
+import threading
+import time
 
 import httpx
 import pytest
@@ -228,3 +231,170 @@ async def test_orphaned_pending_comment_fails_closed_without_upstream_retry(
         "This action may still be completing; verify its result before retrying"
     )
     assert calls == 0
+
+
+@pytest.mark.anyio
+async def test_slow_ledger_reservation_does_not_block_health_requests(monkeypatch):
+    async def assigned(_repository, _number):
+        return True
+
+    async def comment(_repository, _number, body):
+        return {"id": 248, "body": body}
+
+    started = threading.Event()
+    original_reserve = main._idempotency_ledger.reserve
+
+    def slow_reserve(key, fingerprint):
+        started.set()
+        time.sleep(0.2)
+        return original_reserve(key, fingerprint)
+
+    monkeypatch.setattr(main._idempotency_ledger, "reserve", slow_reserve)
+    monkeypatch.setattr(main.gitea_proxy, "is_assigned_issue", assigned)
+    monkeypatch.setattr(main.gitea_proxy, "comment_on_issue", comment)
+    transport = httpx.ASGITransport(app=main.app)
+
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+        started_at = asyncio.get_running_loop().time()
+        authored = asyncio.create_task(client.post(
+            "/api/v1/repos/stackchain/api/issues/248/comments",
+            json={"body": "Keep the dashboard responsive"},
+            headers={"Idempotency-Key": "contention-248"},
+        ))
+        assert await asyncio.to_thread(started.wait, 1)
+        health = await client.get("/healthz")
+        health_elapsed = asyncio.get_running_loop().time() - started_at
+        authored_response = await authored
+
+    assert health.status_code == 200
+    assert health_elapsed < 0.15
+    assert authored_response.status_code == 201
+
+
+@pytest.mark.anyio
+async def test_locked_ledger_returns_bounded_retryable_response(monkeypatch, tmp_path):
+    upstream_calls = 0
+
+    async def assigned(_repository, _number):
+        return True
+
+    async def comment(_repository, _number, body):
+        nonlocal upstream_calls
+        upstream_calls += 1
+        return {"id": 248, "body": body}
+
+    database = tmp_path / "contended.sqlite3"
+    ledger = IdempotencyLedger(
+        database,
+        ttl_seconds=600,
+        max_entries=256,
+        lock_timeout_seconds=0.05,
+    )
+    monkeypatch.setattr(main, "_idempotency_ledger", ledger)
+    monkeypatch.setattr(main.gitea_proxy, "is_assigned_issue", assigned)
+    monkeypatch.setattr(main.gitea_proxy, "comment_on_issue", comment)
+    blocker = sqlite3.connect(database)
+    blocker.execute("BEGIN IMMEDIATE")
+    transport = httpx.ASGITransport(app=main.app)
+
+    try:
+        async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+            started_at = asyncio.get_running_loop().time()
+            response = await client.post(
+                "/api/v1/repos/stackchain/api/issues/248/comments",
+                json={"body": "Retry without freezing"},
+                headers={"Idempotency-Key": "locked-ledger-248"},
+            )
+            elapsed = asyncio.get_running_loop().time() - started_at
+    finally:
+        blocker.rollback()
+        blocker.close()
+
+    assert response.status_code == 503
+    assert response.headers["Retry-After"] == "1"
+    assert response.json()["detail"] == "Authored action queue is busy; please retry"
+    assert elapsed < 0.5
+    assert upstream_calls == 0
+
+
+@pytest.mark.anyio
+async def test_slow_ledger_completion_does_not_block_health_requests(monkeypatch):
+    async def assigned(_repository, _number):
+        return True
+
+    async def comment(_repository, _number, body):
+        return {"id": 249, "body": body}
+
+    started = threading.Event()
+    original_complete = main._idempotency_ledger.complete
+
+    def slow_complete(key, response):
+        started.set()
+        time.sleep(0.2)
+        return original_complete(key, response)
+
+    monkeypatch.setattr(main._idempotency_ledger, "complete", slow_complete)
+    monkeypatch.setattr(main.gitea_proxy, "is_assigned_issue", assigned)
+    monkeypatch.setattr(main.gitea_proxy, "comment_on_issue", comment)
+    transport = httpx.ASGITransport(app=main.app)
+
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+        started_at = asyncio.get_running_loop().time()
+        authored = asyncio.create_task(client.post(
+            "/api/v1/repos/stackchain/api/issues/248/comments",
+            json={"body": "Persist without freezing"},
+            headers={"Idempotency-Key": "slow-completion-248"},
+        ))
+        assert await asyncio.to_thread(started.wait, 1)
+        health = await client.get("/healthz")
+        health_elapsed = asyncio.get_running_loop().time() - started_at
+        authored_response = await authored
+
+    assert health.status_code == 200
+    assert health_elapsed < 0.15
+    assert authored_response.status_code == 201
+
+
+@pytest.mark.anyio
+async def test_locked_completion_fails_closed_with_retry_guidance(monkeypatch, tmp_path):
+    database = tmp_path / "completion-contention.sqlite3"
+    ledger = IdempotencyLedger(
+        database, ttl_seconds=600, max_entries=256, lock_timeout_seconds=0.05
+    )
+    blocker = None
+
+    async def assigned(_repository, _number):
+        return True
+
+    async def comment(_repository, _number, body):
+        nonlocal blocker
+        blocker = sqlite3.connect(database)
+        blocker.execute("BEGIN IMMEDIATE")
+        return {"id": 250, "body": body}
+
+    monkeypatch.setattr(main, "_idempotency_ledger", ledger)
+    monkeypatch.setattr(main.gitea_proxy, "is_assigned_issue", assigned)
+    monkeypatch.setattr(main.gitea_proxy, "comment_on_issue", comment)
+    transport = httpx.ASGITransport(app=main.app)
+
+    try:
+        async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+            response = await client.post(
+                "/api/v1/repos/stackchain/api/issues/248/comments",
+                json={"body": "The upstream mutation may already exist"},
+                headers={"Idempotency-Key": "locked-completion-248"},
+            )
+    finally:
+        if blocker is not None:
+            blocker.rollback()
+            blocker.close()
+
+    assert response.status_code == 503
+    assert response.headers["Retry-After"] == "5"
+    assert response.json()["detail"] == (
+        "This action may have completed; verify its result before retrying"
+    )
+    assert ledger.reserve(
+        "locked-completion-248",
+        ("issue-comment", "stackchain/api", 248, "The upstream mutation may already exist"),
+    ).state == "pending"

tests/test_authored_outbox.py

@@ -0,0 +1,256 @@
+import json
+import subprocess
+from pathlib import Path
+
+import pytest
+
+from src.views import dashboard
+
+
+OUTBOX = Path(__file__).parents[1] / "frontend" / "authored-outbox.js"
+
+
+def run_node(script: str):
+    result = subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)
+    return json.loads(result.stdout)
+
+
+def test_authored_outbox_quarantines_legacy_and_cross_account_messages():
+    script = f"""
+const createAuthoredOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map([['stackchain.authored-outbox.v1', JSON.stringify({{version:1,items:[
+  {{id:'legacy',operationId:'legacy',kind:'issue-comment',repository:'o/r',number:1,body:'Old',status:'queued'}}
+]}})]]);
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+const calls = [];
+const outbox = createAuthoredOutbox({{
+  storage, getOwnerLogin:()=>'timmy',
+  fetchJson:async url => {{calls.push(url); return {{id:1}};}},
+}});
+const bound = outbox.enqueue({{kind:'issue-comment',repository:'o/r',number:2,body:'Mine',operationId:'mine'}});
+(async()=>{{
+  const wrong = await outbox.flush('alexander');
+  const right = await outbox.flush('timmy');
+  process.stdout.write(JSON.stringify({{bound,wrong,right,calls,remaining:outbox.list()}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["bound"]["ownerLogin"] == "timmy"
+    assert output["wrong"]["blocked"] == 2
+    assert len(output["right"]["confirmed"]) == 1
+    assert [item["id"] for item in output["remaining"]] == ["legacy"]
+    assert len(output["calls"]) == 1
+
+
+def test_authored_outbox_persists_each_message_kind_and_flushes_sequentially():
+    script = f"""
+const createAuthoredOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v),removeItem:k=>values.delete(k)}};
+const calls = [];
+const outbox = createAuthoredOutbox({{
+  storage, getOwnerLogin:()=>'timmy', now:() => 1234,
+  fetchJson:async (url, options) => {{
+    calls.push({{url,key:options.headers['Idempotency-Key'],body:JSON.parse(options.body)}});
+    return {{id:calls.length}};
+  }},
+}});
+outbox.enqueue({{kind:'issue-comment',repository:'stackchain/api',number:7,body:'Issue note',operationId:'issue-op'}});
+outbox.enqueue({{kind:'pull-comment',repository:'stackchain/web',number:8,body:'PR note',operationId:'pull-op'}});
+outbox.enqueue({{kind:'update-reply',notificationId:9,body:'Update note',operationId:'update-op'}});
+const persisted = createAuthoredOutbox({{storage,fetchJson:outbox.fetchJson}}).list();
+outbox.flush('timmy').then(result => process.stdout.write(JSON.stringify({{persisted,calls,result,remaining:outbox.list()}})));
+"""
+    output = run_node(script)
+
+    assert [item["kind"] for item in output["persisted"]] == [
+        "issue-comment", "pull-comment", "update-reply"
+    ]
+    assert [item["operationId"] for item in output["persisted"]] == ["issue-op", "pull-op", "update-op"]
+    assert output["calls"] == [
+        {"url": "api/v1/repos/stackchain/api/issues/7/comments", "key": "issue-op", "body": {"body": "Issue note"}},
+        {"url": "api/v1/repos/stackchain/web/pulls/8/comments", "key": "pull-op", "body": {"body": "PR note"}},
+        {"url": "api/v1/notifications/9/reply", "key": "update-op", "body": {"body": "Update note"}},
+    ]
+    assert len(output["result"]["confirmed"]) == 3
+    assert output["remaining"] == []
+
+
+def test_authored_outbox_classifies_failures_and_continues_past_attention_items():
+    script = f"""
+const createAuthoredOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v),removeItem:k=>values.delete(k)}};
+let phase = 'permanent';
+const calls = [];
+const outbox = createAuthoredOutbox({{
+  storage,
+  getOwnerLogin:()=>'timmy',
+  fetchJson:async (_url, options) => {{
+    const body = JSON.parse(options.body).body; calls.push(body);
+    if (body === 'Bad' && phase === 'permanent') {{ const e = new Error('Reply rejected'); e.status=422; throw e; }}
+    if (body === 'Later' && phase === 'transient') {{ const e = new Error('Offline'); e.status=503; throw e; }}
+    return {{id:calls.length}};
+  }},
+}});
+const bad=outbox.enqueue({{kind:'issue-comment',repository:'o/r',number:1,body:'Bad',operationId:'a'}});
+outbox.enqueue({{kind:'pull-comment',repository:'o/r',number:2,body:'Good',operationId:'b'}});
+outbox.flush('timmy').then(async first => {{
+  phase='transient';
+  outbox.enqueue({{kind:'update-reply',notificationId:3,body:'Later',operationId:'c'}});
+  const second=await outbox.flush('timmy');
+  process.stdout.write(JSON.stringify({{first,second,calls,remaining:outbox.list(),badId:bad.id}}));
+}});
+"""
+    output = run_node(script)
+
+    assert output["calls"] == ["Bad", "Good", "Later"]
+    assert len(output["first"]["confirmed"]) == 1
+    assert output["remaining"][0]["id"] == output["badId"]
+    assert output["remaining"][0]["status"] == "attention"
+    assert output["remaining"][0]["error"] == "Reply rejected"
+    assert output["remaining"][1]["status"] == "queued"
+
+
+def test_authored_outbox_retry_is_single_flight_and_edit_rotates_identity():
+    script = f"""
+const createAuthoredOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v),removeItem:k=>values.delete(k)}};
+let release; const gate=new Promise(resolve=>release=resolve); let calls=0; let sequence=0;
+const outbox=createAuthoredOutbox({{
+  storage, getOwnerLogin:()=>'timmy', createOperationId:()=> 'new-' + (++sequence),
+  fetchJson:async()=>{{calls++; await gate; return {{id:1}};}},
+}});
+const item=outbox.enqueue({{kind:'issue-comment',repository:'o/r',number:1,body:'Old',operationId:'old'}});
+const edited=outbox.update(item.id,{{body:'New'}});
+const flush=outbox.flush('timmy'); const retry=outbox.retry(item.id, 'timmy'); release();
+Promise.all([flush,retry]).then(results=>process.stdout.write(JSON.stringify({{edited,calls,results,remaining:outbox.list()}})));
+"""
+    output = run_node(script)
+
+    assert output["edited"]["body"] == "New"
+    assert output["edited"]["operationId"] == "new-1"
+    assert output["calls"] == 1
+    assert output["remaining"] == []
+
+
+def test_authored_outbox_deduplicates_repeated_queue_attempts_by_operation_id():
+    script = f"""
+const createAuthoredOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+const outbox=createAuthoredOutbox({{storage,getOwnerLogin:()=>'timmy'}});
+const first=outbox.enqueue({{kind:'issue-comment',repository:'o/r',number:1,body:'Same',operationId:'stable'}});
+const second=outbox.enqueue({{kind:'issue-comment',repository:'o/r',number:1,body:'Same',operationId:'stable'}});
+process.stdout.write(JSON.stringify({{first,second,items:outbox.list()}}));
+"""
+    output = run_node(script)
+
+    assert output["first"] == output["second"]
+    assert len(output["items"]) == 1
+
+
+def test_authored_outbox_mirrors_to_background_sync_and_reconciles_worker_results():
+    script = f"""
+const createAuthoredOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map(); const mirrors=[]; let requested=0;
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+const backgroundSync = {{
+  reconcile: async (items, lane) => mirrors.push({{items:items.map(item=>({{...item}})),lane}}),
+  requestSync: async () => {{requested += 1;}},
+}};
+const outbox=createAuthoredOutbox({{storage,getOwnerLogin:()=>'timmy',backgroundSync}});
+const sent=outbox.enqueue({{kind:'issue-comment',repository:'o/r',number:1,body:'Sent',operationId:'sent'}});
+const failed=outbox.enqueue({{kind:'update-reply',notificationId:2,body:'Fix me',operationId:'failed'}});
+setTimeout(() => {{
+  const reconciled=outbox.reconcileBackground([
+    {{...sent,status:'sent'}},
+    {{...failed,status:'attention',error:'Reply rejected'}},
+  ]);
+  setTimeout(() => process.stdout.write(JSON.stringify({{mirrors,requested,reconciled}})), 0);
+}}, 0);
+"""
+    output = run_node(script)
+
+    assert output["mirrors"][0]["lane"] == "authored"
+    assert [item["operationId"] for item in output["mirrors"][-1]["items"]] == ["failed"]
+    assert output["requested"] >= 1
+    assert [(item["operationId"], item["status"]) for item in output["reconciled"]] == [
+        ("failed", "attention")
+    ]
+
+
+def test_authored_outbox_waits_for_durable_background_admission():
+    script = f"""
+const createAuthoredOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+let release; const gate = new Promise(resolve => release = resolve); const events = [];
+const outbox = createAuthoredOutbox({{
+  storage, getOwnerLogin:()=> 'timmy',
+  backgroundSync: {{
+    reconcile: async (_items, lane) => {{ events.push('mirror:' + lane); await gate; events.push('committed'); }},
+    requestSync: async () => events.push('registered'),
+  }},
+}});
+const admission = outbox.enqueueDurably({{
+  kind:'issue-comment',repository:'o/r',number:1,body:'Do not lose',operationId:'message-1'
+}}).then(result => {{ events.push('confirmed'); return result; }});
+Promise.resolve().then(async () => {{
+  const pending = events.slice(); release(); const result = await admission;
+  process.stdout.write(JSON.stringify({{pending,events,result,items:outbox.list()}}));
+}});
+"""
+    output = run_node(script)
+
+    assert output["pending"] == ["mirror:authored"]
+    assert output["events"] == ["mirror:authored", "committed", "registered", "confirmed"]
+    assert output["result"]["durability"] == "background"
+    assert output["items"][0]["operationId"] == "message-1"
+
+
+def test_authored_outbox_foreground_send_uses_atomic_background_delivery():
+    script = f"""
+const createAuthoredOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map(); let backgroundCalls=0; let directCalls=0;
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+const backgroundSync = {{
+  reconcile: async()=>{{}}, requestSync:async()=>{{}},
+  send: async (item, owner) => {{backgroundCalls += 1; return {{message:{{id:3,owner}}}};}},
+}};
+const outbox=createAuthoredOutbox({{
+  storage,getOwnerLogin:()=>'timmy',backgroundSync,
+  fetchJson:async()=>{{directCalls += 1; return {{id:4}};}},
+}});
+outbox.enqueue({{kind:'pull-comment',repository:'o/r',number:2,body:'Review',operationId:'once'}});
+(async()=>{{
+  const result=await outbox.flush('timmy');
+  process.stdout.write(JSON.stringify({{backgroundCalls,directCalls,result,remaining:outbox.list()}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["backgroundCalls"] == 1
+    assert output["directCalls"] == 0
+    assert output["result"]["confirmed"] == [{"id": 3, "owner": "timmy"}]
+    assert output["remaining"] == []
+
+
+@pytest.mark.anyio
+async def test_mobile_dashboard_loads_and_operates_authored_message_outbox():
+    html = await dashboard()
+
+    assert '<script src="static/authored-outbox.js"></script>' in html
+    assert "const authoredOutbox = createAuthoredOutbox({" in html
+    assert "activeFlushLogin = contextIdentityFresh ?" in html
+    assert "flushAuthoredOutbox();" in html
+    assert "await authoredOutbox.enqueueDurably" in html
+    assert "Saving for background delivery…" in html
+    assert "Saved for next launch; background delivery unavailable." in html
+    assert "authoredOutbox.retry(item.outbox_id, activeFlushLogin)" in html
+    assert "authoredOutbox.discard(item.outbox_id)" in html
+    assert "if (result?.queued)" in html
+    assert "backgroundSync: backgroundIssueSync" in html
+    assert "authoredOutbox.reconcileBackground(records)" in html

tests/test_background_issue_sync.py

@@ -0,0 +1,539 @@
+import json
+import subprocess
+from pathlib import Path
+
+import httpx
+import pytest
+
+from src import main
+from src.views import dashboard
+
+
+SYNC = Path(__file__).parents[1] / "frontend" / "background-issue-sync.js"
+
+
+def run_node(script: str) -> dict:
+    completed = subprocess.run(
+        ["node", "-e", script], capture_output=True, check=True, text=True
+    )
+    return json.loads(completed.stdout)
+
+
+def test_closed_app_sync_delivers_matching_issue_once_with_original_idempotency_key():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+const item = {{
+  id:'capture-1', operationId:'capture-1', ownerLogin:'timmy', status:'queued',
+  repository:'stackchain/api', title:'Offline report', body:'Full context',
+  labelIds:[3], milestoneId:4, dueDate:'2026-08-09', queuedAt:100,
+}};
+const state = {{item, completed:[], released:[], failed:[], calls:[]}};
+const store = {{
+  claimNext: async owner => state.item && state.item.ownerLogin === owner ? {{...state.item}} : null,
+  complete: async id => {{ state.completed.push(id); state.item = null; }},
+  release: async id => state.released.push(id),
+  fail: async (id, message) => state.failed.push({{id,message}}),
+}};
+const fetchJson = async (url, options = {{}}) => {{
+  state.calls.push({{url,options}});
+  if (url === 'api/v1/background-identity') return {{login:'timmy'}};
+  return {{repository:'stackchain/api',number:251,title:'Offline report'}};
+}};
+(async () => {{
+  const sync = createBackgroundIssueSync({{store,fetchJson}});
+  const result = await sync.flush();
+  process.stdout.write(JSON.stringify({{state,result}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["result"]["confirmed"][0]["number"] == 251
+    assert output["state"]["completed"] == ["capture-1"]
+    assert output["state"]["released"] == []
+    assert output["state"]["failed"] == []
+    assert output["state"]["calls"][0]["url"] == "api/v1/background-identity"
+    mutation = output["state"]["calls"][1]
+    assert mutation["url"] == "api/v1/repos/stackchain/api/issues"
+    assert mutation["options"]["headers"]["Idempotency-Key"] == "capture-1"
+    assert json.loads(mutation["options"]["body"]) == {
+        "title": "Offline report",
+        "body": "Full context",
+        "label_ids": [3],
+        "milestone_id": 4,
+        "due_date": "2026-08-09T23:59:59Z",
+    }
+
+
+def test_closed_app_sync_returns_privacy_safe_actionable_delivery_receipts():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+const queued = [
+  {{id:'capture-1',operationId:'capture-1',ownerLogin:'timmy',status:'queued',repository:'stackchain/api',title:'Secret title',body:'Secret body',labelIds:[]}},
+  {{id:'reply-1',operationId:'reply-1',ownerLogin:'timmy',status:'queued',kind:'pull-comment',repository:'stackchain/web',number:8,body:'Secret reply'}},
+  {{id:'bad-1',operationId:'bad-1',ownerLogin:'timmy',status:'queued',repository:'stackchain/api',title:'Bad',body:'Secret failure',labelIds:[]}},
+];
+const store = {{
+  claimNext: async () => queued.shift() || null,
+  complete: async () => {{}}, release: async () => {{}}, fail: async () => {{}},
+  countBlocked: async () => 0,
+}};
+let issueMutations = 0;
+const fetchJson = async (url) => {{
+  if (url === 'api/v1/background-identity') return {{login:'timmy'}};
+  if (url.endsWith('/issues') && issueMutations++ === 0) return {{number:44,repository:'stackchain/api',title:'Secret title'}};
+  if (url.includes('/pulls/8/comments')) return {{id:91,body:'Secret reply'}};
+  const error = new Error('Sensitive validation detail'); error.status = 422; throw error;
+}};
+(async () => {{
+  const result = await createBackgroundIssueSync({{store,fetchJson}}).flush();
+  process.stdout.write(JSON.stringify(result));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["login"] == "timmy"
+    assert output["receipts"] == [
+        {
+            "id": "capture-1",
+            "status": "confirmed",
+            "kind": "issue",
+            "route": "#/my-work/issue/stackchain/api/44",
+        },
+        {
+            "id": "reply-1",
+            "status": "confirmed",
+            "kind": "message",
+            "route": "#/my-work/pull/stackchain/web/8",
+        },
+        {
+            "id": "bad-1",
+            "status": "attention",
+            "kind": "issue",
+            "route": "#/my-work/drafts",
+        },
+    ]
+    serialized = json.dumps(output["receipts"])
+    assert "Secret" not in serialized
+    assert "Sensitive" not in serialized
+
+
+@pytest.mark.parametrize(
+    ("item", "expected_url"),
+    [
+        (
+            {"kind": "issue-comment", "repository": "stackchain/api", "number": 7},
+            "api/v1/repos/stackchain/api/issues/7/comments",
+        ),
+        (
+            {"kind": "pull-comment", "repository": "stackchain/web", "number": 8},
+            "api/v1/repos/stackchain/web/pulls/8/comments",
+        ),
+        (
+            {"kind": "update-reply", "notificationId": 9},
+            "api/v1/notifications/9/reply",
+        ),
+    ],
+)
+def test_closed_app_sync_delivers_each_authored_message_kind(item, expected_url):
+    authored = {
+        "id": "message-op",
+        "operationId": "message-op",
+        "ownerLogin": "timmy",
+        "status": "queued",
+        "body": "Ship this reply",
+        **item,
+    }
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+let queued = {json.dumps(authored)};
+const calls = [];
+const store = {{
+  claimNext: async owner => queued?.ownerLogin === owner ? (queued = null, {json.dumps(authored)}) : null,
+  complete: async () => {{}}, release: async () => {{}}, fail: async () => {{}},
+  countBlocked: async () => 0,
+}};
+const fetchJson = async (url, options = {{}}) => {{
+  calls.push({{url, options}});
+  if (url === 'api/v1/background-identity') return {{login:'timmy'}};
+  return {{id:42}};
+}};
+(async () => {{
+  const result = await createBackgroundIssueSync({{store,fetchJson}}).flush();
+  process.stdout.write(JSON.stringify({{calls,result}}));
+}})();
+"""
+    output = run_node(script)
+
+    mutation = output["calls"][1]
+    assert mutation["url"] == expected_url
+    assert mutation["options"]["headers"]["Idempotency-Key"] == "message-op"
+    assert json.loads(mutation["options"]["body"]) == {"body": "Ship this reply"}
+    assert output["result"]["confirmed"] == [{"id": 42}]
+
+
+def test_reconciling_one_outbox_lane_preserves_the_other_lane():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+const records=new Map();let tail=Promise.resolve();
+const transaction=work=>{{const run=tail.then(()=>work({{
+  getAll:async()=>[...records.values()].map(value=>({{...value}})),
+  put:async value=>records.set(value.id,{{...value}}),delete:async id=>records.delete(id),
+}}));tail=run.catch(()=>{{}});return run;}};
+(async()=>{{
+  const store=createBackgroundIssueSync.createIssueSyncStore({{transaction}});
+  await store.reconcile([{{id:'issue',ownerLogin:'timmy',status:'queued'}}], 'issue');
+  await store.reconcile([{{id:'message',kind:'issue-comment',ownerLogin:'timmy',status:'queued'}}], 'authored');
+  await store.reconcile([], 'issue');
+  process.stdout.write(JSON.stringify(await store.snapshot()));
+}})();
+"""
+    output = run_node(script)
+
+    assert output == [
+        {"id": "message", "kind": "issue-comment", "ownerLogin": "timmy", "status": "queued", "outboxLane": "authored"}
+    ]
+
+
+def test_delivery_receipt_preference_is_account_bound_and_hidden_from_outbox():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+const records=new Map();let tail=Promise.resolve();
+const transaction=work=>{{const run=tail.then(()=>work({{
+  getAll:async()=>[...records.values()].map(value=>({{...value}})),
+  put:async value=>records.set(value.id,{{...value}}),delete:async id=>records.delete(id),
+}}));tail=run.catch(()=>{{}});return run;}};
+(async()=>{{
+  const store=createBackgroundIssueSync.createIssueSyncStore({{transaction}});
+  await store.setReceiptPreference('timmy', true);
+  await store.reconcile([{{id:'issue',ownerLogin:'timmy',status:'queued'}}], 'issue');
+  const result={{
+    timmy:await store.getReceiptPreference('timmy'),
+    alexander:await store.getReceiptPreference('alexander'),
+    snapshot:await store.snapshot(),
+    blocked:await store.countBlocked('alexander'),
+  }};
+  await store.setReceiptPreference('timmy', false);
+  result.disabled=await store.getReceiptPreference('timmy');
+  process.stdout.write(JSON.stringify(result));
+}})();
+"""
+    output = run_node(script)
+
+    assert output == {
+        "timmy": True,
+        "alexander": False,
+        "snapshot": [
+            {
+                "id": "issue",
+                "ownerLogin": "timmy",
+                "status": "queued",
+                "outboxLane": "issue",
+            }
+        ],
+        "blocked": 1,
+        "disabled": False,
+    }
+
+
+def test_closed_app_sync_leaves_another_accounts_issue_queued():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+const state = {{owners:[],mutations:0}};
+const store = {{
+  claimNext: async owner => {{ state.owners.push(owner); return null; }},
+  countBlocked: async owner => owner === 'alexander' ? 1 : 0,
+  complete: async () => {{}},
+}};
+const fetchJson = async url => {{
+  if (url === 'api/v1/background-identity') return {{login:'alexander'}};
+  state.mutations += 1;
+}};
+(async () => {{
+  const result = await createBackgroundIssueSync({{store,fetchJson}}).flush();
+  process.stdout.write(JSON.stringify({{state,result}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["state"] == {"owners": ["alexander"], "mutations": 0}
+    assert output["result"]["confirmed"] == []
+    assert output["result"]["blocked"] == 1
+
+
+def test_session_expiry_during_delivery_releases_claim_without_attention():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+const queued = [
+  {{id:'capture-auth',operationId:'stable-key',ownerLogin:'timmy',repository:'o/r',title:'Keep me',body:'',labelIds:[]}},
+  {{id:'capture-later',operationId:'later-key',ownerLogin:'timmy',repository:'o/r',title:'Do not try yet',body:'',labelIds:[]}},
+];
+const state = {{released:[],failed:[],mutationKeys:[]}};
+const store = {{
+  claimNext: async () => queued.shift() || null,
+  release: async id => state.released.push(id),
+  fail: async (id,message) => state.failed.push({{id,message}}),
+  countBlocked: async () => 0,
+}};
+const fetchJson = async (url, options={{}}) => {{
+  if (url === 'api/v1/background-identity') return {{login:'timmy'}};
+  state.mutationKeys.push(options.headers['Idempotency-Key']);
+  const error = new Error('Authentication required'); error.status = 401; throw error;
+}};
+(async () => {{
+  let error = null;
+  try {{ await createBackgroundIssueSync({{store,fetchJson}}).flush(); }}
+  catch (caught) {{ error = {{message:caught.message,status:caught.status}}; }}
+  process.stdout.write(JSON.stringify({{state,error}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output == {
+        "state": {
+            "released": ["capture-auth"],
+            "failed": [],
+            "mutationKeys": ["stable-key"],
+        },
+        "error": {"message": "Authentication required", "status": 401},
+    }
+
+
+def test_transient_delivery_failure_releases_claim_and_requests_another_sync():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+let item = {{id:'capture-2',operationId:'capture-2',ownerLogin:'timmy',repository:'o/r',title:'Retry',body:'Later',labelIds:[]}};
+const state = {{released:[],completed:[]}};
+const store = {{
+  claimNext: async () => item ? (item = null, {{id:'capture-2',operationId:'capture-2',ownerLogin:'timmy',repository:'o/r',title:'Retry',body:'Later',labelIds:[]}}) : null,
+  release: async id => state.released.push(id),
+  complete: async id => state.completed.push(id),
+}};
+const fetchJson = async url => {{
+  if (url === 'api/v1/background-identity') return {{login:'timmy'}};
+  const error = new Error('Gitea unavailable'); error.status = 503; throw error;
+}};
+(async () => {{
+  let error = null;
+  try {{ await createBackgroundIssueSync({{store,fetchJson}}).flush(); }}
+  catch (caught) {{ error = caught.message; }}
+  process.stdout.write(JSON.stringify({{state,error}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["state"]["released"] == ["capture-2"]
+    assert output["state"]["completed"] == []
+    assert output["error"] == "Gitea unavailable"
+
+
+def test_permanent_delivery_failure_marks_issue_for_foreground_attention():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+let claimed = false;
+const state = {{failed:[],released:[]}};
+const store = {{
+  claimNext: async () => claimed ? null : (claimed = true, {{id:'capture-3',operationId:'capture-3',ownerLogin:'timmy',repository:'o/r',title:'Invalid',body:'',labelIds:[]}}),
+  fail: async (id, message) => state.failed.push({{id,message}}),
+  release: async id => state.released.push(id),
+  countBlocked: async () => 0,
+}};
+const fetchJson = async url => {{
+  if (url === 'api/v1/background-identity') return {{login:'timmy'}};
+  const error = new Error('Title is invalid'); error.status = 422; throw error;
+}};
+(async () => {{
+  const result = await createBackgroundIssueSync({{store,fetchJson}}).flush();
+  process.stdout.write(JSON.stringify({{state,result}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["state"]["failed"] == [
+        {"id": "capture-3", "message": "Title is invalid"}
+    ]
+    assert output["state"]["released"] == []
+    assert output["result"]["attention"] == 1
+
+
+def test_issue_store_atomically_grants_one_delivery_claim():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+const records = new Map();
+let tail = Promise.resolve();
+const transaction = work => {{
+  const run = tail.then(() => work({{
+    getAll: async () => [...records.values()].map(value => ({{...value}})),
+    put: async value => records.set(value.id, {{...value}}),
+    delete: async id => records.delete(id),
+  }}));
+  tail = run.catch(() => {{}});
+  return run;
+}};
+(async () => {{
+  const store = createBackgroundIssueSync.createIssueSyncStore({{transaction,now:()=>1000,claimMs:5000}});
+  await store.reconcile([{{id:'same',operationId:'same',ownerLogin:'timmy',status:'queued',repository:'o/r',title:'Once',labelIds:[]}}]);
+  const claims = await Promise.all([store.claimNext('timmy'),store.claimNext('timmy')]);
+  process.stdout.write(JSON.stringify({{claims,records:[...records.values()]}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert sum(claim is not None for claim in output["claims"]) == 1
+    assert output["records"][0]["status"] == "sending"
+    assert output["records"][0]["claimUntil"] == 6000
+
+
+def test_foreground_and_worker_race_still_posts_one_issue():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+const records = new Map(); let tail = Promise.resolve();
+const transaction = work => {{
+  const run = tail.then(() => work({{
+    getAll:async()=>[...records.values()].map(value=>({{...value}})),
+    put:async value=>records.set(value.id,{{...value}}), delete:async id=>records.delete(id),
+  }}));
+  tail=run.catch(()=>{{}}); return run;
+}};
+const item={{id:'race',operationId:'race',ownerLogin:'timmy',status:'queued',repository:'o/r',title:'Exactly once',body:'',labelIds:[]}};
+let mutations=0;
+const fetchJson=async url=>{{
+  if(url==='api/v1/background-identity') return {{login:'timmy'}};
+  mutations+=1; return {{number:77}};
+}};
+(async()=>{{
+  const store=createBackgroundIssueSync.createIssueSyncStore({{transaction}});
+  await store.reconcile([item]);
+  const sync=createBackgroundIssueSync({{store,fetchJson}});
+  const [foreground,worker]=await Promise.all([sync.send(item,'timmy'),sync.flush()]);
+  process.stdout.write(JSON.stringify({{foreground,worker,mutations,remaining:[...records.values()]}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["mutations"] == 1
+    assert len(output["remaining"]) == 1
+    assert output["remaining"][0]["status"] == "sent"
+    delivered = int(bool(output["foreground"].get("issue"))) + len(
+        output["worker"]["confirmed"]
+    )
+    assert delivered == 1
+
+
+def test_foreground_send_upserts_before_claim_when_mirror_is_still_pending():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+let record = null; const state={{upserts:0,mutations:0}};
+const store={{
+  upsert:async item=>{{state.upserts+=1;record={{...item}};}},
+  claim:async(id,owner)=>record?.id===id&&record?.ownerLogin===owner?{{...record}}:null,
+  complete:async()=>{{record=null;}}, release:async()=>{{}}, fail:async()=>{{}},
+}};
+const fetchJson=async()=>{{state.mutations+=1;return {{number:88}};}};
+(async()=>{{
+  const sync=createBackgroundIssueSync({{store,fetchJson}});
+  const result=await sync.send({{id:'early',operationId:'early',ownerLogin:'timmy',repository:'o/r',title:'Fast',body:'',labelIds:[]}},'timmy');
+  process.stdout.write(JSON.stringify({{state,result,record}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["state"] == {"upserts": 1, "mutations": 1}
+    assert output["result"]["issue"]["number"] == 88
+    assert output["record"] is None
+
+
+def test_completed_delivery_leaves_non_replayable_tombstone_for_next_page():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+const records=new Map();let tail=Promise.resolve();
+const transaction=work=>{{const run=tail.then(()=>work({{
+  getAll:async()=>[...records.values()].map(value=>({{...value}})),
+  put:async value=>records.set(value.id,{{...value}}),delete:async id=>records.delete(id),
+}}));tail=run.catch(()=>{{}});return run;}};
+(async()=>{{
+  const store=createBackgroundIssueSync.createIssueSyncStore({{transaction,now:()=>100}});
+  await store.reconcile([{{id:'done',ownerLogin:'timmy',status:'queued'}}]);
+  await store.claimNext('timmy');
+  await store.complete('done');
+  const replay=await store.claimNext('timmy');
+  const snapshot=await store.snapshot();
+  process.stdout.write(JSON.stringify({{replay,snapshot}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["replay"] is None
+    assert output["snapshot"] == [
+        {"id": "done", "ownerLogin": "timmy", "status": "sent", "outboxLane": "issue", "claimUntil": 0}
+    ]
+
+
+def test_user_edit_resets_worker_attention_item_for_retry():
+    script = f"""
+const createBackgroundIssueSync = require({json.dumps(str(SYNC))});
+const records=new Map([['edit',{{id:'edit',ownerLogin:'timmy',status:'attention',title:'Bad',error:'Invalid'}}]]);
+let tail=Promise.resolve();
+const transaction=work=>{{const run=tail.then(()=>work({{
+  getAll:async()=>[...records.values()].map(value=>({{...value}})),
+  put:async value=>records.set(value.id,{{...value}}),delete:async id=>records.delete(id),
+}}));tail=run.catch(()=>{{}});return run;}};
+(async()=>{{
+  const store=createBackgroundIssueSync.createIssueSyncStore({{transaction,now:()=>100}});
+  await store.reconcile([{{id:'edit',ownerLogin:'timmy',status:'queued',title:'Fixed'}}]);
+  const claimed=await store.claimNext('timmy');
+  process.stdout.write(JSON.stringify(claimed));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["title"] == "Fixed"
+    assert output["status"] == "sending"
+    assert "error" not in output
+
+
+@pytest.mark.anyio
+async def test_background_identity_is_lightweight_and_never_cacheable(monkeypatch):
+    calls = 0
+
+    async def user():
+        nonlocal calls
+        calls += 1
+        return {"id": 7, "login": "timmy", "email": "private@example.com"}
+
+    monkeypatch.setattr(main, "current_user", user)
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+        response = await client.get("/api/v1/background-identity")
+
+    assert response.status_code == 200
+    assert response.json() == {"login": "timmy"}
+    assert response.headers["cache-control"] == "no-store"
+    assert calls == 1
+
+
+@pytest.mark.anyio
+async def test_dashboard_wires_indexeddb_outbox_and_background_sync_fallback():
+    html = await dashboard()
+
+    assert '<script src="static/background-issue-sync.js"></script>' in html
+    assert "const backgroundIssueStore = createIssueSyncStore();" in html
+    assert "createBackgroundIssueSync({" in html
+    assert "backgroundSync: backgroundIssueSync" in html
+    assert "registration.sync.register('stackchain-issue-outbox-v1')" in html
+    assert "backgroundIssueSync.snapshot().then(records => {" in html
+    assert "issueOutbox.reconcileBackground(records);" in html
+    assert "authoredOutbox.reconcileBackground(records);" in html
+    assert "if ('indexedDB' in window)" in html
+
+
+@pytest.mark.anyio
+async def test_dashboard_offers_explicit_account_bound_delivery_receipt_opt_in():
+    html = await dashboard()
+
+    assert 'id="delivery-receipts" type="checkbox"' in html
+    assert "deliveryReceipts.addEventListener('change', async () => {" in html
+    assert "await Notification.requestPermission()" in html
+    assert "backgroundIssueSync.setReceiptPreference(confirmedOwnerLogin, enabled)" in html
+    assert "await backgroundIssueSync.getReceiptPreference(confirmedOwnerLogin)" in html
+    assert "window.addEventListener('hashchange', openDeliveryReceiptRoute);" in html
+    assert "if (window.location.hash !== '#/my-work/drafts') return;" in html

tests/test_dashboard_auth.py

@@ -0,0 +1,489 @@
+import asyncio
+import time
+
+import httpx
+import pytest
+
+from src import main
+from src.session_store import SessionStoreError
+
+
+@pytest.fixture
+def access_control(monkeypatch, tmp_path):
+    monkeypatch.setenv("STACKCHAIN_DASHBOARD_AUTH_MODE", "operator")
+    monkeypatch.setenv("STACKCHAIN_DASHBOARD_ACCESS_TOKEN", "correct horse battery staple")
+    monkeypatch.setenv("STACKCHAIN_DASHBOARD_SESSION_SECRET", "a-separate-session-signing-secret-with-enough-entropy")
+    monkeypatch.setenv("STACKCHAIN_SESSION_DB", str(tmp_path / "sessions.sqlite3"))
+    monkeypatch.setenv("STACKCHAIN_LOGIN_ATTEMPT_DB", str(tmp_path / "login-attempts.sqlite3"))
+    monkeypatch.setenv("STACKCHAIN_LOGIN_MAX_FAILURES", "3")
+    monkeypatch.setenv("STACKCHAIN_LOGIN_WINDOW_SECONDS", "60")
+
+
+@pytest.mark.anyio
+async def test_default_operator_mode_fails_closed_before_gitea_when_secrets_are_missing(monkeypatch):
+    monkeypatch.delenv("STACKCHAIN_DASHBOARD_AUTH_MODE", raising=False)
+    called = False
+
+    async def user():
+        nonlocal called
+        called = True
+        return {"id": 1, "login": "timmy"}
+
+    monkeypatch.setattr(main, "current_user", user)
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        health = await client.get("/healthz")
+        responses = [
+            await client.get("/readyz"),
+            await client.get("/login"),
+            await client.get("/"),
+            await client.get("/api/v1/context"),
+        ]
+
+    assert health.status_code == 200
+    assert [response.status_code for response in responses] == [503, 503, 503, 503]
+    assert all(response.headers["cache-control"] == "no-store" for response in responses)
+    assert all(response.json() == {
+        "detail": "Dashboard authentication is not configured"
+    } for response in responses)
+    assert called is False
+
+
+@pytest.mark.anyio
+async def test_operator_mode_rejects_reused_or_incomplete_secrets(monkeypatch):
+    monkeypatch.setenv("STACKCHAIN_DASHBOARD_AUTH_MODE", "operator")
+    monkeypatch.setenv("STACKCHAIN_DASHBOARD_ACCESS_TOKEN", "same-secret-with-at-least-thirty-two-characters")
+    monkeypatch.setenv("STACKCHAIN_DASHBOARD_SESSION_SECRET", "same-secret-with-at-least-thirty-two-characters")
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        reused = await client.get("/login")
+        monkeypatch.setenv("STACKCHAIN_DASHBOARD_SESSION_SECRET", "")
+        incomplete = await client.get("/login")
+
+    assert reused.status_code == 503
+    assert incomplete.status_code == 503
+    assert "same-secret" not in reused.text
+
+
+@pytest.mark.anyio
+async def test_insecure_local_mode_is_restricted_to_loopback(monkeypatch):
+    monkeypatch.setenv("STACKCHAIN_DASHBOARD_AUTH_MODE", "insecure-local")
+    local_transport = httpx.ASGITransport(app=main.app, client=("127.0.0.1", 1234))
+    remote_transport = httpx.ASGITransport(app=main.app, client=("203.0.113.9", 1234))
+    async with httpx.AsyncClient(transport=local_transport, base_url="http://test") as client:
+        local = await client.get("/login")
+    async with httpx.AsyncClient(transport=remote_transport, base_url="http://test") as client:
+        remote = await client.get("/login")
+
+    assert local.status_code == 200
+    assert remote.status_code == 403
+    assert remote.json() == {"detail": "Insecure local mode requires a loopback client"}
+
+
+@pytest.mark.anyio
+async def test_anonymous_private_request_is_rejected_before_gitea(access_control, monkeypatch):
+    called = False
+
+    async def user():
+        nonlocal called
+        called = True
+        return {"id": 1, "login": "timmy"}
+
+    monkeypatch.setattr(main, "current_user", user)
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        response = await client.get("/api/v1/context")
+
+    assert response.status_code == 401
+    assert response.json() == {"detail": "Authentication required"}
+    assert response.headers["cache-control"] == "no-store"
+    assert called is False
+
+
+@pytest.mark.anyio
+async def test_sign_in_creates_secure_session_without_echoing_access_token(access_control):
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        response = await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+
+    assert response.status_code == 200
+    assert response.json() == {"authenticated": True}
+    cookies = response.headers.get_list("set-cookie")
+    assert any("stackchain_session=" in value and "HttpOnly" in value and "Secure" in value and "SameSite=strict" in value for value in cookies)
+    assert any("stackchain_csrf=" in value and "Secure" in value and "SameSite=strict" in value and "HttpOnly" not in value for value in cookies)
+    assert "correct horse battery staple" not in response.text
+    assert response.headers["cache-control"] == "no-store"
+
+
+@pytest.mark.anyio
+async def test_sign_in_throttles_repeated_failures_with_retry_guidance(access_control):
+    transport = httpx.ASGITransport(app=main.app, client=("203.0.113.7", 1234))
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        failures = [
+            await client.post("/api/v1/session", json={"access_token": "wrong"})
+            for _ in range(3)
+        ]
+        blocked = await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+
+    assert [response.status_code for response in failures] == [401, 401, 401]
+    assert blocked.status_code == 429
+    assert blocked.json() == {"detail": "Too many sign-in attempts"}
+    assert blocked.headers["retry-after"].isdigit()
+    assert blocked.headers["cache-control"] == "no-store"
+
+
+@pytest.mark.anyio
+async def test_successful_sign_in_clears_prior_failures(access_control):
+    transport = httpx.ASGITransport(app=main.app, client=("203.0.113.8", 1234))
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        for _ in range(2):
+            await client.post("/api/v1/session", json={"access_token": "wrong"})
+        success = await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+        after_success = [
+            await client.post("/api/v1/session", json={"access_token": "wrong"})
+            for _ in range(3)
+        ]
+
+    assert success.status_code == 200
+    assert [response.status_code for response in after_success] == [401, 401, 401]
+
+
+@pytest.mark.anyio
+async def test_authenticated_get_reaches_private_api(access_control, monkeypatch):
+    async def user():
+        return {"id": 1, "login": "timmy", "full_name": "", "email": ""}
+
+    async def empty():
+        return []
+
+    monkeypatch.setattr(main, "current_user", user)
+    monkeypatch.setattr(main, "repos", empty)
+    monkeypatch.setattr(main, "issues", empty)
+    monkeypatch.setattr(main, "pull_requests", empty)
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        signed_in = await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+        response = await client.get("/api/v1/context")
+
+    assert signed_in.status_code == 200
+    assert response.status_code == 200
+    assert response.json()["user"]["login"] == "timmy"
+
+
+@pytest.mark.anyio
+async def test_session_status_reuses_the_middleware_validation(access_control, monkeypatch):
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+        original_store = main.dashboard_auth._session_store()
+        lookups = 0
+
+        class CountingStore:
+            def is_active(self, session_id, expires_at):
+                nonlocal lookups
+                lookups += 1
+                return original_store.is_active(session_id, expires_at)
+
+        monkeypatch.setattr(main.dashboard_auth, "_session_store", lambda now=None: CountingStore())
+        response = await client.get("/api/v1/session")
+
+    assert response.status_code == 200
+    assert response.json()["authenticated"] is True
+    assert lookups == 1
+
+
+@pytest.mark.anyio
+async def test_authenticated_session_status_exposes_only_csrf_proof(access_control):
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+        response = await client.get("/api/v1/session")
+
+    assert response.status_code == 200
+    assert response.json() == {
+        "authenticated": True,
+        "csrf_token": client.cookies["stackchain_csrf"],
+    }
+    assert "correct horse battery staple" not in response.text
+
+
+@pytest.mark.anyio
+async def test_mutation_requires_same_origin_and_session_csrf(access_control, monkeypatch):
+    calls = 0
+
+    async def mark_read(notification_id):
+        nonlocal calls
+        calls += 1
+        return {"id": notification_id, "read": True}
+
+    monkeypatch.setattr(main, "mark_notification_read", mark_read)
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+        missing = await client.patch("/api/v1/notifications/7/read")
+        foreign = await client.patch(
+            "/api/v1/notifications/7/read",
+            headers={
+                "Origin": "https://evil.example",
+                "X-CSRF-Token": client.cookies["stackchain_csrf"],
+            },
+        )
+        valid = await client.patch(
+            "/api/v1/notifications/7/read",
+            headers={
+                "Origin": "https://test",
+                "X-CSRF-Token": client.cookies["stackchain_csrf"],
+            },
+        )
+
+    assert missing.status_code == 403
+    assert foreign.status_code == 403
+    assert valid.status_code == 200
+    assert calls == 1
+
+
+@pytest.mark.anyio
+async def test_logout_clears_session_and_blocks_private_routes(access_control):
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+        csrf = client.cookies["stackchain_csrf"]
+        response = await client.delete(
+            "/api/v1/session",
+            headers={"Origin": "https://test", "X-CSRF-Token": csrf},
+        )
+        private = await client.get("/api/v1/background-identity")
+
+    assert response.status_code == 200
+    assert response.json() == {"authenticated": False, "clear_private_device_data": True}
+    assert private.status_code == 401
+    assert all("Max-Age=0" in value for value in response.headers.get_list("set-cookie"))
+
+
+@pytest.mark.anyio
+async def test_logout_revokes_a_captured_cookie_before_gitea(access_control, monkeypatch):
+    calls = 0
+
+    async def user():
+        nonlocal calls
+        calls += 1
+        return {"id": 1, "login": "timmy"}
+
+    monkeypatch.setattr(main, "current_user", user)
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+        captured = client.cookies["stackchain_session"]
+        csrf = client.cookies["stackchain_csrf"]
+
+        async with httpx.AsyncClient(
+            transport=transport,
+            base_url="https://test",
+            headers={"Cookie": f"stackchain_session={captured}"},
+        ) as replay:
+            before = await replay.get("/api/v1/background-identity")
+
+        await client.delete(
+            "/api/v1/session",
+            headers={"Origin": "https://test", "X-CSRF-Token": csrf},
+        )
+
+        async with httpx.AsyncClient(
+            transport=transport,
+            base_url="https://test",
+            headers={"Cookie": f"stackchain_session={captured}"},
+        ) as replay:
+            after = await replay.get("/api/v1/background-identity")
+
+    assert before.status_code == 200
+    assert after.status_code == 401
+    assert after.headers["cache-control"] == "no-store"
+    assert calls == 1
+
+
+@pytest.mark.anyio
+async def test_session_registry_latency_does_not_block_the_event_loop(access_control, monkeypatch):
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+
+        class SlowStore:
+            def is_active(self, session_id, expires_at):
+                time.sleep(0.15)
+                return True
+
+        monkeypatch.setattr(main.dashboard_auth, "_session_store", lambda now=None: SlowStore())
+        private_request = asyncio.create_task(client.get("/api/v1/session"))
+        await asyncio.sleep(0)
+        started = time.perf_counter()
+        await asyncio.sleep(0.01)
+        heartbeat_elapsed = time.perf_counter() - started
+        response = await private_request
+
+    assert response.status_code == 200
+    assert heartbeat_elapsed < 0.08
+
+
+@pytest.mark.anyio
+async def test_session_registry_read_failure_fails_closed_before_gitea(
+    access_control, monkeypatch
+):
+    called = False
+
+    async def user():
+        nonlocal called
+        called = True
+        return {"id": 1, "login": "timmy"}
+
+    monkeypatch.setattr(main, "current_user", user)
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+
+        class BrokenStore:
+            def is_active(self, session_id, expires_at):
+                raise SessionStoreError("database path and secret details")
+
+        monkeypatch.setattr(main.dashboard_auth, "_session_store", lambda now=None: BrokenStore())
+        response = await client.get("/api/v1/background-identity")
+        health = await client.get("/healthz")
+
+    assert response.status_code == 503
+    assert response.json() == {"detail": "Session registry is temporarily unavailable"}
+    assert response.headers["cache-control"] == "no-store"
+    assert "database path" not in response.text
+    assert called is False
+    assert health.status_code == 200
+
+
+@pytest.mark.anyio
+async def test_sign_in_registry_write_failure_issues_no_cookie(access_control, monkeypatch):
+    class BrokenStore:
+        def activate(self, session_id, expires_at):
+            raise SessionStoreError("database path and secret details")
+
+    monkeypatch.setattr(main.dashboard_auth, "_session_store", lambda now=None: BrokenStore())
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        response = await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+
+    assert response.status_code == 503
+    assert response.json() == {"detail": "Session registry is temporarily unavailable"}
+    assert response.headers["cache-control"] == "no-store"
+    assert response.headers.get_list("set-cookie") == []
+    assert "database path" not in response.text
+
+
+@pytest.mark.anyio
+async def test_logout_registry_failure_does_not_claim_revocation(access_control, monkeypatch):
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+        csrf = client.cookies["stackchain_csrf"]
+
+        class BrokenStore:
+            def is_active(self, session_id, expires_at):
+                return True
+
+            def revoke(self, session_id):
+                raise SessionStoreError("database path and secret details")
+
+        monkeypatch.setattr(main.dashboard_auth, "_session_store", lambda now=None: BrokenStore())
+        response = await client.delete(
+            "/api/v1/session",
+            headers={"Origin": "https://test", "X-CSRF-Token": csrf},
+        )
+
+    assert response.status_code == 503
+    assert response.json() == {"detail": "Session registry is temporarily unavailable"}
+    assert response.headers["cache-control"] == "no-store"
+    assert response.headers.get_list("set-cookie") == []
+    assert "database path" not in response.text
+
+
+@pytest.mark.anyio
+async def test_public_routes_skip_session_registry_validation(access_control, monkeypatch):
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        signed_in = await client.post(
+            "/api/v1/session", json={"access_token": "correct horse battery staple"}
+        )
+
+        class BrokenStore:
+            def is_active(self, session_id, expires_at):
+                raise SessionStoreError("public routes must not read the registry")
+
+        monkeypatch.setattr(main.dashboard_auth, "_session_store", lambda now=None: BrokenStore())
+        login = await client.get("/login")
+        manifest = await client.get("/manifest.webmanifest")
+        static = await client.get("/static/session.js")
+
+    assert signed_in.status_code == 200
+    assert [login.status_code, manifest.status_code, static.status_code] == [200, 200, 200]
+
+
+@pytest.mark.anyio
+async def test_public_routes_remain_available_and_readiness_hides_identity(access_control, monkeypatch):
+    async def user():
+        return {"id": 1, "login": "timmy"}
+
+    monkeypatch.setattr(main, "current_user", user)
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="https://test") as client:
+        health = await client.get("/healthz")
+        login = await client.get("/login")
+        ready = await client.get("/readyz")
+
+    assert health.status_code == 200
+    assert login.status_code == 200
+    assert 'name="access_token"' in login.text
+    assert ready.status_code == 200
+    assert ready.json() == {"status": "ready", "service": "stackchain-dashboard"}
+
+
+@pytest.mark.anyio
+async def test_subpath_deployment_scopes_routes_and_session_cookies(access_control):
+    transport = httpx.ASGITransport(app=main.app, root_path="/dashboard")
+    async with httpx.AsyncClient(
+        transport=transport, base_url="https://test/dashboard/"
+    ) as client:
+        login = await client.get("login")
+        signed_in = await client.post(
+            "api/v1/session",
+            json={"access_token": "correct horse battery staple"},
+        )
+        status = await client.get("api/v1/session")
+
+    assert login.status_code == 200
+    assert signed_in.status_code == 200
+    assert status.status_code == 200
+    assert any(
+        "stackchain_session=" in value and "Path=/dashboard" in value
+        for value in signed_in.headers.get_list("set-cookie")
+    )

tests/test_dashboard_session_frontend.py

@@ -0,0 +1,93 @@
+import json
+import subprocess
+from pathlib import Path
+
+import pytest
+
+from src.views import dashboard
+
+
+ROOT = Path(__file__).resolve().parents[1]
+SESSION_JS = ROOT / "frontend" / "session.js"
+
+
+def run_session_scenario(scenario: str) -> dict:
+    harness = f"""
+const createSessionBoundary = require({json.dumps(str(SESSION_JS))});
+const state = {{ requests: [], removed: [], deletedDatabases: [], deletedCaches: [], assigned: '', workerMessages: [] }};
+const storage = {{
+  values: new Map([['stackchain.private', 'secret'], ['gitea.preference', 'keep']]),
+  get length() {{ return this.values.size; }},
+  key(index) {{ return Array.from(this.values.keys())[index] || null; }},
+  removeItem(key) {{ state.removed.push(key); this.values.delete(key); }},
+}};
+const boundary = createSessionBoundary({{
+  cookie: () => 'other=x; stackchain_csrf=csrf-proof; theme=dark',
+  origin: 'https://forge.example',
+  base: '/dashboard/',
+  fetchImpl: async (url, options = {{}}) => {{
+    state.requests.push({{ url: String(url), method: options.method || 'GET', headers: Object.fromEntries(new Headers(options.headers || {{}})) }});
+    return new Response('{{}}', {{ status: 200, headers: {{ 'Content-Type': 'application/json' }} }});
+  }},
+  localStorage: storage,
+  sessionStorage: storage,
+  indexedDB: {{ deleteDatabase: name => {{ state.deletedDatabases.push(name); return {{ onsuccess: null, onerror: null, onblocked: null }}; }} }},
+  caches: {{ keys: async () => ['stackchain-dashboard-shell-v15', 'gitea-assets'], delete: async key => {{ state.deletedCaches.push(key); }} }},
+  serviceWorker: {{ ready: Promise.resolve({{ active: {{ postMessage: message => state.workerMessages.push(message) }} }}) }},
+  location: {{ assign: value => {{ state.assigned = value; }} }},
+}});
+(async () => {{ {scenario} }})().catch(error => {{ console.error(error); process.exit(1); }});
+"""
+    result = subprocess.run(["node", "-e", harness], text=True, capture_output=True, check=True)
+    return json.loads(result.stdout)
+
+
+def test_mutating_same_origin_fetch_receives_csrf_proof():
+    result = run_session_scenario(
+        """
+await boundary.fetch('/dashboard/api/v1/notifications/7/read', { method: 'PATCH' });
+process.stdout.write(JSON.stringify(state));
+"""
+    )
+
+    assert result["requests"][0]["headers"]["x-csrf-token"] == "csrf-proof"
+
+
+def test_sign_out_clears_only_dashboard_private_device_state():
+    result = run_session_scenario(
+        """
+await boundary.signOut();
+state.remaining = Array.from(storage.values.keys());
+process.stdout.write(JSON.stringify(state));
+"""
+    )
+
+    request = result["requests"][0]
+    assert request["url"] == "/dashboard/api/v1/session"
+    assert request["method"] == "DELETE"
+    assert request["headers"]["x-csrf-token"] == "csrf-proof"
+    assert "stackchain.private" in result["removed"]
+    assert result["remaining"] == ["gitea.preference"]
+    assert result["deletedDatabases"] == ["stackchain-background-outbox-v1"]
+    assert result["deletedCaches"] == ["stackchain-dashboard-shell-v15"]
+    assert result["assigned"] == "/dashboard/login"
+
+
+def test_authenticated_dashboard_load_requests_queued_delivery_resume():
+    result = run_session_scenario(
+        """
+await boundary.resumeQueuedWork();
+process.stdout.write(JSON.stringify(state));
+"""
+    )
+
+    assert result["workerMessages"] == [{"type": "stackchain-resume-outbox"}]
+
+
+@pytest.mark.anyio
+async def test_dashboard_loads_session_boundary_first_and_offers_sign_out():
+    html = await dashboard()
+
+    assert '<script src="static/session.js"></script>' in html
+    assert html.index('static/session.js') < html.index('static/markdown.js')
+    assert '<button id="sign-out" type="button">Sign out &amp; clear this device</button>' in html

tests/test_drafts.py

@@ -102,6 +102,51 @@ process.stdout.write(JSON.stringify(drafts));
     assert output[0]["route"] == {"kind": "issue", "repository": "stackchain/api", "number": 18}
 
 
+def test_draft_inbox_expands_issue_outbox_items_with_actionable_states():
+    script = f"""
+const createDraftInbox = require({json.dumps(str(DRAFTS))});
+const values = new Map([['stackchain.issue-outbox.v1', JSON.stringify({{version:1,items:[
+  {{id:'queued-1',repository:'stackchain/api',title:'Offline capture',body:'Context',status:'queued',queuedAt:100}},
+  {{id:'attention-2',repository:'stackchain/web',title:'Fix labels',body:'Details',status:'attention',error:'Unknown label',queuedAt:200}},
+]}})]]);
+const storage = {{get length(){{return values.size}},key:i=>Array.from(values.keys())[i]||null,getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v),removeItem:k=>values.delete(k)}};
+const drafts = createDraftInbox({{storage,now:()=>300}}).list();
+process.stdout.write(JSON.stringify(drafts));
+"""
+    output = run_node(script)
+
+    assert [item["outbox_id"] for item in output] == ["attention-2", "queued-1"]
+    assert [item["status"] for item in output] == ["attention", "queued"]
+    assert output[0]["label"] == "Needs attention"
+    assert output[1]["label"] == "Queued issue"
+
+
+def test_draft_inbox_marks_mismatched_and_legacy_outbox_content_copy_only():
+    script = f"""
+const createDraftInbox = require({json.dumps(str(DRAFTS))});
+const values = new Map([
+ ['stackchain.issue-outbox.v1', JSON.stringify({{version:2,items:[
+   {{id:'other',repository:'o/r',title:'Other issue',body:'Private context',ownerLogin:'alexander',status:'queued'}},
+   {{id:'legacy',repository:'o/r',title:'Legacy issue',body:'Old context',status:'queued'}}
+ ]}})],
+ ['stackchain.authored-outbox.v1', JSON.stringify({{version:2,items:[
+   {{id:'mine',kind:'issue-comment',repository:'o/r',number:2,body:'My comment',ownerLogin:'timmy',status:'queued'}}
+ ]}})],
+]);
+const storage = {{get length(){{return values.size}},key:i=>Array.from(values.keys())[i]||null,getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+const drafts = createDraftInbox({{storage,getCurrentLogin:()=>'timmy'}}).list();
+process.stdout.write(JSON.stringify(drafts));
+"""
+    output = run_node(script)
+
+    by_id = {item["outbox_id"]: item for item in output}
+    assert by_id["other"]["quarantined"] is True
+    assert by_id["other"]["ownership"] == "Queued by alexander — current account is timmy"
+    assert by_id["other"]["copy_text"] == "Other issue\n\nPrivate context"
+    assert by_id["legacy"]["ownership"] == "Queued by an unknown account — current account is timmy"
+    assert by_id["mine"]["quarantined"] is False
+
+
 @pytest.mark.anyio
 async def test_mobile_dashboard_exposes_touch_safe_draft_recovery_lane():
     html = await dashboard()
@@ -115,3 +160,22 @@ async def test_mobile_dashboard_exposes_touch_safe_draft_recovery_lane():
     assert '.draft-actions button { min-height:44px;' in html
     assert 'createDraftInbox({ storage: localStorage' in html
     assert "captureDraft.repository && !repositories.includes(captureDraft.repository)" in html
+
+
+@pytest.mark.anyio
+async def test_dashboard_only_flushes_account_bound_outboxes_after_a_fresh_identity_snapshot():
+    html = await dashboard()
+
+    assert "let confirmedOwnerLogin = '';" in html
+    assert "let activeFlushLogin = '';" in html
+    assert "getOwnerLogin: () => confirmedOwnerLogin" in html
+    assert "getCurrentLogin: () => activeFlushLogin" in html
+    assert "const contextIdentityFresh = !snapshot.context.error && !contextFreshness?.stale &&" in html
+    assert "!contextFreshness?.degraded && !contextFreshness?.revalidating;" in html
+    assert "activeFlushLogin = contextIdentityFresh ? String(snapshot.context.user?.login || '').trim() : '';" in html
+    assert "issueOutbox.flush(activeFlushLogin)" in html
+    assert "authoredOutbox.flush(activeFlushLogin)" in html
+    assert "activeFlushLogin = '';" in html
+    assert 'class="draft-copy"' in html
+    assert "navigator.clipboard.writeText(item.copy_text)" in html
+    assert "item.quarantined" in html

tests/test_gitea_notifications.py

@@ -136,11 +136,20 @@ async def test_notification_detail_loads_subject_and_latest_comment_for_inbox_re
             return httpx.Response(200, json={"body": "Deploy fails after **three** retries."})
         if request.url.path.endswith("/issues/comments/9"):
             return httpx.Response(200, json={
+                "id": 9,
                 "body": "Logs point to the worker timeout.",
                 "created_at": "2026-08-06T12:30:00Z",
                 "user": {"login": "alexander"},
                 "html_url": "https://forge.example/stackchain/api/issues/7#issuecomment-9",
             })
+        if request.url.path.endswith("/issues/7/comments"):
+            return httpx.Response(200, json=[{
+                "id": 9,
+                "body": "Logs point to the worker timeout.",
+                "created_at": "2026-08-06T12:30:00Z",
+                "user": {"login": "alexander"},
+                "html_url": "https://forge.example/stackchain/api/issues/7#issuecomment-9",
+            }], headers={"X-Total-Count": "1"})
         return httpx.Response(404)
 
     gitea_proxy.start_client(transport=httpx.MockTransport(upstream))
@@ -153,6 +162,7 @@ async def test_notification_detail_loads_subject_and_latest_comment_for_inbox_re
         "http://127.0.0.1:3000/api/v1/notifications/threads/42",
         "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",
     ]
     assert result == {
         "id": 42,
@@ -168,6 +178,18 @@ async def test_notification_detail_loads_subject_and_latest_comment_for_inbox_re
             "created_at": "2026-08-06T12:30:00Z",
             "url": "https://forge.example/stackchain/api/issues/7#issuecomment-9",
         },
+        "conversation": {
+            "comments": [{
+                "id": 9,
+                "author": "alexander",
+                "body": "Logs point to the worker timeout.",
+                "created_at": "2026-08-06T12:30:00Z",
+                "url": "https://forge.example/stackchain/api/issues/7#issuecomment-9",
+            }],
+            "page": 1,
+            "older_page": None,
+            "total": 1,
+        },
     }
 
 
@@ -223,6 +245,9 @@ async def test_reply_to_notification_posts_to_its_issue_conversation(subject_kin
             })
         return httpx.Response(201, json={
             "id": 91,
+            "user": {"login": "timmy"},
+            "body": "Please retry the worker.",
+            "created_at": "2026-08-07T19:00:00Z",
             "html_url": "https://forge.example/stackchain/api/issues/7#issuecomment-91",
         })
 
@@ -246,5 +271,8 @@ async def test_reply_to_notification_posts_to_its_issue_conversation(subject_kin
     ]
     assert result == {
         "id": 91,
+        "author": "timmy",
+        "body": "Please retry the worker.",
+        "created_at": "2026-08-07T19:00:00Z",
         "url": "https://forge.example/stackchain/api/issues/7#issuecomment-91",
     }

tests/test_gitea_transport.py

@@ -28,6 +28,198 @@ async def test_gitea_transport_is_reused_across_requests_and_closed():
     assert client.is_closed
 
 
+@pytest.mark.anyio
+async def test_gitea_transport_coalesces_identical_concurrent_gets():
+    calls = 0
+    release = asyncio.Event()
+
+    async def handler(request):
+        nonlocal calls
+        calls += 1
+        await release.wait()
+        return httpx.Response(200, json={"path": request.url.path})
+
+    gitea_proxy.start_client(
+        transport=httpx.MockTransport(handler),
+        max_concurrency=4,
+        admission_timeout=0.1,
+    )
+    try:
+        requests = [asyncio.create_task(gitea_proxy.fetch("user")) for _ in range(20)]
+        await asyncio.sleep(0)
+        release.set()
+        results = await asyncio.gather(*requests)
+    finally:
+        await gitea_proxy.stop_client()
+
+    assert calls == 1
+    assert results == [{"path": "/api/v1/user"}] * 20
+
+
+@pytest.mark.anyio
+async def test_cancelling_one_coalesced_waiter_keeps_the_shared_get_running():
+    started = asyncio.Event()
+    release = asyncio.Event()
+
+    async def handler(request):
+        started.set()
+        await release.wait()
+        return httpx.Response(200, json={"path": request.url.path})
+
+    gitea_proxy.start_client(transport=httpx.MockTransport(handler))
+    owner = asyncio.create_task(gitea_proxy.fetch("user"))
+    try:
+        await started.wait()
+        waiter = asyncio.create_task(gitea_proxy.fetch("user"))
+        await asyncio.sleep(0)
+        waiter.cancel()
+        with pytest.raises(asyncio.CancelledError):
+            await waiter
+        release.set()
+        assert await owner == {"path": "/api/v1/user"}
+    finally:
+        release.set()
+        await asyncio.gather(owner, return_exceptions=True)
+        await gitea_proxy.stop_client()
+
+
+@pytest.mark.anyio
+async def test_gitea_transport_rejects_reads_beyond_bounded_capacity():
+    active = 0
+    peak = 0
+    saturated = asyncio.Event()
+    release = asyncio.Event()
+
+    async def handler(request):
+        nonlocal active, peak
+        active += 1
+        peak = max(peak, active)
+        if active == 2:
+            saturated.set()
+        try:
+            await release.wait()
+            return httpx.Response(200, json={"path": request.url.path})
+        finally:
+            active -= 1
+
+    gitea_proxy.start_client(
+        transport=httpx.MockTransport(handler),
+        max_concurrency=3,
+        admission_timeout=0.02,
+    )
+    first = asyncio.create_task(gitea_proxy.fetch("first"))
+    second = asyncio.create_task(gitea_proxy.fetch("second"))
+    try:
+        await asyncio.wait_for(saturated.wait(), timeout=0.2)
+        with pytest.raises(gitea_proxy.GiteaOverloadedError):
+            await gitea_proxy.fetch("third")
+    finally:
+        release.set()
+        await asyncio.gather(first, second)
+        await gitea_proxy.stop_client()
+
+    assert peak == 2
+
+
+@pytest.mark.anyio
+async def test_gitea_transport_reserves_one_slot_for_mutations_and_bounds_them():
+    active = 0
+    peak = 0
+    reads_started = asyncio.Event()
+    mutation_started = asyncio.Event()
+    release = asyncio.Event()
+
+    async def handler(request):
+        nonlocal active, peak
+        active += 1
+        peak = max(peak, active)
+        if active == 2:
+            reads_started.set()
+        if request.method == "POST":
+            mutation_started.set()
+        try:
+            await release.wait()
+            return httpx.Response(200, json={"method": request.method})
+        finally:
+            active -= 1
+
+    client = gitea_proxy.start_client(
+        transport=httpx.MockTransport(handler),
+        max_concurrency=3,
+        admission_timeout=0.02,
+    )
+    reads = [
+        asyncio.create_task(gitea_proxy.fetch("first")),
+        asyncio.create_task(gitea_proxy.fetch("second")),
+    ]
+    mutation = None
+    try:
+        await asyncio.wait_for(reads_started.wait(), timeout=0.2)
+        mutation = asyncio.create_task(client.post("/api/v1/mutate", json={"value": 1}))
+        await asyncio.wait_for(mutation_started.wait(), timeout=0.2)
+        with pytest.raises(gitea_proxy.GiteaOverloadedError):
+            await asyncio.wait_for(
+                client.post("/api/v1/mutate", json={"value": 1}), timeout=0.1
+            )
+    finally:
+        release.set()
+        await asyncio.gather(*reads, *(task for task in [mutation] if task is not None))
+        await gitea_proxy.stop_client()
+
+    assert peak == 3
+
+
+@pytest.mark.anyio
+async def test_gitea_transport_reads_bulkhead_configuration_from_environment(monkeypatch):
+    monkeypatch.setenv("GITEA_MAX_CONCURRENCY", "12")
+    monkeypatch.setenv("GITEA_ADMISSION_TIMEOUT_SECONDS", "0.75")
+
+    client = gitea_proxy.start_client(
+        transport=httpx.MockTransport(lambda request: httpx.Response(200, json={}))
+    )
+    try:
+        assert client.max_concurrency == 12
+        assert client.admission_timeout == 0.75
+    finally:
+        await gitea_proxy.stop_client()
+
+
+@pytest.mark.anyio
+async def test_streaming_reads_share_the_same_bounded_read_capacity():
+    active = 0
+    saturated = asyncio.Event()
+    release = asyncio.Event()
+
+    async def handler(request):
+        nonlocal active
+        active += 1
+        if active == 2:
+            saturated.set()
+        try:
+            await release.wait()
+            return httpx.Response(200, content=b"diff")
+        finally:
+            active -= 1
+
+    gitea_proxy.start_client(
+        transport=httpx.MockTransport(handler),
+        max_concurrency=3,
+        admission_timeout=0.02,
+    )
+    streams = [
+        asyncio.create_task(gitea_proxy.fetch_text("first", 100)),
+        asyncio.create_task(gitea_proxy.fetch_text("second", 100)),
+    ]
+    try:
+        await asyncio.wait_for(saturated.wait(), timeout=0.2)
+        with pytest.raises(gitea_proxy.GiteaOverloadedError):
+            await asyncio.wait_for(gitea_proxy.fetch("third"), timeout=0.1)
+    finally:
+        release.set()
+        await asyncio.gather(*streams)
+        await gitea_proxy.stop_client()
+
+
 @pytest.mark.anyio
 async def test_application_lifespan_opens_and_closes_gitea_transport(monkeypatch):
     calls = []

tests/test_issue_api.py

@@ -373,6 +373,55 @@ async def test_create_issue_endpoint_derives_self_assignment_and_returns_confirm
     assert calls == [("stackchain/api", "Capture mobile work", "Context", "timmy", [3])]
 
 
+@pytest.mark.anyio
+async def test_create_issue_atomically_validates_and_sends_release_plan(monkeypatch):
+    calls = []
+
+    async def user():
+        return {"login": "timmy"}
+
+    async def available_repos():
+        return [{"full_name": "stackchain/api"}]
+
+    async def milestones(repository):
+        assert repository == "stackchain/api"
+        return [{"id": 9, "title": "August RC"}]
+
+    async def create(repository, title, body, assignee, label_ids, milestone_id, due_date):
+        calls.append((repository, title, body, assignee, label_ids, milestone_id, due_date))
+        return {
+            "id": 221, "number": 221, "title": title, "state": "open",
+            "repository": repository, "labels": [], "assignees": [assignee],
+            "milestone": {"id": 9, "title": "August RC"},
+            "due_date": "2026-08-31T23:59:59Z",
+            "updated_at": "2026-08-07T20:00:00Z",
+            "url": "https://forge.example/stackchain/api/issues/221",
+        }
+
+    monkeypatch.setattr(main.gitea_proxy, "current_user", user)
+    monkeypatch.setattr(main.gitea_proxy, "repos", available_repos)
+    monkeypatch.setattr(main.gitea_proxy, "repo_milestones", milestones)
+    monkeypatch.setattr(main.gitea_proxy, "create_issue", create)
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+        response = await client.post(
+            "/api/v1/repos/stackchain/api/issues",
+            json={
+                "title": "Ship mobile plan",
+                "milestone_id": 9,
+                "due_date": "2026-08-31T23:59:59Z",
+            },
+        )
+
+    assert response.status_code == 201
+    assert response.json()["milestone"] == {"id": 9, "title": "August RC"}
+    assert response.json()["due_date"] == "2026-08-31T23:59:59Z"
+    assert calls == [(
+        "stackchain/api", "Ship mobile plan", "", "timmy", [], 9,
+        "2026-08-31T23:59:59Z",
+    )]
+
+
 @pytest.mark.anyio
 async def test_create_issue_replays_one_upstream_result_for_concurrent_idempotent_requests(monkeypatch):
     calls = 0
@@ -630,6 +679,26 @@ async def test_gitea_create_issue_posts_self_assignment_and_normalizes_confirmat
     assert result["labels"] == ["P0"]
 
 
+@pytest.mark.anyio
+async def test_gitea_create_issue_requires_confirmed_release_plan():
+    async def handler(_request):
+        return httpx.Response(201, json={
+            "id": 221, "number": 221, "title": "Planned work", "state": "open",
+            "assignees": [{"login": "timmy"}], "labels": [],
+            "milestone": None, "due_date": "2026-09-01T23:59:59Z",
+        })
+
+    gitea_proxy.start_client(transport=httpx.MockTransport(handler))
+    try:
+        with pytest.raises(ValueError, match="release plan"):
+            await gitea_proxy.create_issue(
+                "stackchain/api", "Planned work", "", "timmy", [], 9,
+                "2026-08-31T23:59:59Z",
+            )
+    finally:
+        await gitea_proxy.stop_client()
+
+
 @pytest.mark.anyio
 async def test_gitea_repo_labels_returns_safe_touch_picker_options():
     requests = []
@@ -702,6 +771,27 @@ async def test_create_issue_rejects_blank_title_before_upstream(monkeypatch):
     assert called is False
 
 
+@pytest.mark.anyio
+async def test_create_issue_rejects_nonexistent_due_date_before_upstream(monkeypatch):
+    called = False
+
+    async def user():
+        nonlocal called
+        called = True
+        return {"login": "timmy"}
+
+    monkeypatch.setattr(main.gitea_proxy, "current_user", user)
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+        response = await client.post(
+            "/api/v1/repos/stackchain/api/issues",
+            json={"title": "Impossible plan", "due_date": "2026-02-31T23:59:59Z"},
+        )
+
+    assert response.status_code == 422
+    assert called is False
+
+
 @pytest.mark.anyio
 async def test_create_issue_rejects_label_not_in_target_repository(monkeypatch):
     created = False

tests/test_issue_outbox.py

@@ -0,0 +1,343 @@
+import json
+import subprocess
+from pathlib import Path
+
+import pytest
+
+from src.views import dashboard
+
+
+OUTBOX = Path(__file__).parents[1] / "frontend" / "issue-outbox.js"
+
+
+def run_node(script: str):
+    result = subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)
+    return json.loads(result.stdout)
+
+
+def test_issue_outbox_binds_items_and_only_flushes_for_the_matching_account():
+    script = f"""
+const createIssueOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+const calls = [];
+let confirmedLogin = 'timmy';
+const outbox = createIssueOutbox({{
+  storage, getOwnerLogin:() => confirmedLogin, createOperationId:() => 'bound-op',
+  fetchJson:async url => {{ calls.push(url); return {{number:1}}; }},
+}});
+const queued = outbox.enqueue({{repository:'stackchain/api',title:'Bound',body:'Context'}});
+confirmedLogin = 'alexander';
+(async () => {{
+  const mismatch = await outbox.flush('alexander');
+  const unknown = await outbox.retry(queued.id, '');
+  const matched = await outbox.flush('timmy');
+  process.stdout.write(JSON.stringify({{queued,mismatch,unknown,matched,calls}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["queued"]["ownerLogin"] == "timmy"
+    assert output["mismatch"]["blocked"] == 1
+    assert output["unknown"]["blocked"] == 1
+    assert len(output["matched"]["confirmed"]) == 1
+    assert len(output["calls"]) == 1
+
+
+def test_issue_outbox_queues_multiple_planned_issues_with_stable_operation_ids():
+    script = f"""
+const createIssueOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{
+  getItem:key => values.has(key) ? values.get(key) : null,
+  setItem:(key,value) => values.set(key,value),
+  removeItem:key => values.delete(key),
+}};
+let sequence = 0;
+const outbox = createIssueOutbox({{storage, getOwnerLogin:()=>'timmy', createOperationId:() => 'op-' + (++sequence), now:() => 1000 + sequence}});
+outbox.enqueue({{repository:'stackchain/api',title:'First',body:'One',labelIds:[3]}});
+outbox.enqueue({{repository:'stackchain/web',title:'Second',body:'Two',milestoneId:4,dueDate:'2026-08-09'}});
+const reloaded = createIssueOutbox({{storage}}).list();
+process.stdout.write(JSON.stringify({{items:reloaded, stored:JSON.parse(values.get('stackchain.issue-outbox.v1'))}}));
+"""
+    output = run_node(script)
+
+    assert [(item["repository"], item["title"]) for item in output["items"]] == [
+        ("stackchain/api", "First"),
+        ("stackchain/web", "Second"),
+    ]
+    assert [item["operationId"] for item in output["items"]] == ["op-1", "op-2"]
+    assert all(item["status"] == "queued" for item in output["items"])
+    assert output["stored"]["version"] == 2
+
+
+def test_issue_outbox_flushes_sequentially_and_keeps_transient_failures_queued():
+    script = f"""
+const createIssueOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v),removeItem:k=>values.delete(k)}};
+let sequence = 0;
+const calls = [];
+const outbox = createIssueOutbox({{
+  storage,
+  getOwnerLogin:()=>'timmy',
+  createOperationId:() => 'stable-' + (++sequence),
+  fetchJson:async (url, options) => {{
+    calls.push({{url, key:options.headers['Idempotency-Key']}});
+    if (calls.length === 2) {{ const error = new Error('upstream unavailable'); error.status = 503; throw error; }}
+    return {{repository:'stackchain/api',number:41,title:'First'}};
+  }},
+}});
+outbox.enqueue({{repository:'stackchain/api',title:'First',body:'One'}});
+outbox.enqueue({{repository:'stackchain/web',title:'Second',body:'Two'}});
+outbox.flush('timmy').then(result => process.stdout.write(JSON.stringify({{result,calls,remaining:outbox.list()}})));
+"""
+    output = run_node(script)
+
+    assert output["result"]["confirmed"][0]["number"] == 41
+    assert output["calls"] == [
+        {"url": "api/v1/repos/stackchain/api/issues", "key": "stable-1"},
+        {"url": "api/v1/repos/stackchain/web/issues", "key": "stable-2"},
+    ]
+    assert len(output["remaining"]) == 1
+    assert output["remaining"][0]["title"] == "Second"
+    assert output["remaining"][0]["status"] == "queued"
+
+
+def test_issue_outbox_preserves_permanent_failures_for_edit_and_retry():
+    script = f"""
+const createIssueOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v),removeItem:k=>values.delete(k)}};
+let invalid = true;
+const calls = [];
+const outbox = createIssueOutbox({{
+  storage, getOwnerLogin:()=>'timmy', createOperationId:() => 'stable-edit',
+  fetchJson:async (_url, options) => {{
+    calls.push({{key:options.headers['Idempotency-Key'],body:JSON.parse(options.body)}});
+    if (invalid) {{ const error = new Error('Title is invalid'); error.status = 422; throw error; }}
+    return {{repository:'stackchain/api',number:42,title:'Fixed title'}};
+  }},
+}});
+const queued = outbox.enqueue({{repository:'stackchain/api',title:'Bad',body:'Context'}});
+outbox.flush('timmy').then(async () => {{
+  const attention = outbox.list()[0];
+  outbox.update(queued.id, {{...attention,title:'Fixed title'}});
+  invalid = false;
+  const result = await outbox.retry(queued.id, 'timmy');
+  process.stdout.write(JSON.stringify({{attention,result,calls,remaining:outbox.list()}}));
+}});
+"""
+    output = run_node(script)
+
+    assert output["attention"]["status"] == "attention"
+    assert output["attention"]["error"] == "Title is invalid"
+    assert [call["key"] for call in output["calls"]] == ["stable-edit", "stable-edit"]
+    assert output["calls"][1]["body"]["title"] == "Fixed title"
+    assert output["result"]["confirmed"][0]["number"] == 42
+    assert output["remaining"] == []
+
+
+def test_issue_outbox_is_single_flight_when_reconnect_and_send_now_overlap():
+    script = f"""
+const createIssueOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v),removeItem:k=>values.delete(k)}};
+let calls = 0;
+let release;
+const gate = new Promise(resolve => {{ release = resolve; }});
+const outbox = createIssueOutbox({{
+  storage, getOwnerLogin:()=>'timmy', createOperationId:() => 'single-flight',
+  fetchJson:async () => {{ calls += 1; await gate; return {{repository:'stackchain/api',number:43,title:'Once'}}; }},
+}});
+const queued = outbox.enqueue({{repository:'stackchain/api',title:'Once',body:'Context'}});
+const reconnect = outbox.flush('timmy');
+const sendNow = outbox.retry(queued.id, 'timmy');
+release();
+Promise.all([reconnect,sendNow]).then(results => process.stdout.write(JSON.stringify({{calls,results,remaining:outbox.list()}})));
+"""
+    output = run_node(script)
+
+    assert output["calls"] == 1
+    assert output["remaining"] == []
+    assert sum(len(result["confirmed"]) for result in output["results"]) >= 1
+
+
+def test_issue_outbox_mirrors_queue_and_registers_background_sync():
+    script = f"""
+const createIssueOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+const state = {{snapshots:[],syncs:0}};
+const backgroundSync = {{
+  reconcile: async items => state.snapshots.push(items.map(item => ({{...item}}))),
+  requestSync: async () => {{ state.syncs += 1; }},
+}};
+const outbox = createIssueOutbox({{
+  storage, backgroundSync, getOwnerLogin:()=> 'timmy', createOperationId:()=> 'background-1',
+}});
+outbox.enqueue({{repository:'stackchain/api',title:'Close the app',body:'Still deliver'}});
+setTimeout(() => process.stdout.write(JSON.stringify(state)), 0);
+"""
+    output = run_node(script)
+
+    assert output["snapshots"][0][0]["operationId"] == "background-1"
+    assert output["snapshots"][0][0]["ownerLogin"] == "timmy"
+    assert output["syncs"] == 1
+
+
+def test_issue_outbox_confirms_durable_admission_only_after_mirror_and_sync():
+    script = f"""
+const createIssueOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+let releaseMirror; let releaseSync;
+const mirrorGate = new Promise(resolve => releaseMirror = resolve);
+const syncGate = new Promise(resolve => releaseSync = resolve);
+const events = [];
+const outbox = createIssueOutbox({{
+  storage, getOwnerLogin:()=> 'timmy', createOperationId:()=> 'durable-1',
+  backgroundSync: {{
+    reconcile: async items => {{ events.push('mirror-start'); await mirrorGate; events.push('mirror-committed'); }},
+    requestSync: async () => {{ events.push('sync-start'); await syncGate; events.push('sync-registered'); }},
+  }},
+}});
+const admission = outbox.enqueueDurably({{repository:'stackchain/api',title:'Keep this',body:'Draft'}})
+  .then(result => {{ events.push('confirmed'); return result; }});
+Promise.resolve().then(async () => {{
+  const beforeMirror = events.slice();
+  releaseMirror(); await new Promise(resolve => setTimeout(resolve, 0));
+  const beforeSync = events.slice();
+  releaseSync();
+  const result = await admission;
+  process.stdout.write(JSON.stringify({{beforeMirror,beforeSync,events,result,items:outbox.list()}}));
+}});
+"""
+    output = run_node(script)
+
+    assert output["beforeMirror"] == ["mirror-start"]
+    assert output["beforeSync"] == ["mirror-start", "mirror-committed", "sync-start"]
+    assert output["events"][-1] == "confirmed"
+    assert output["result"]["background"] is True
+    assert output["result"]["item"]["id"] == "durable-1"
+    assert output["items"][0]["title"] == "Keep this"
+
+
+def test_issue_outbox_reports_degraded_admission_without_losing_foreground_item():
+    script = f"""
+const createIssueOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+const outbox = createIssueOutbox({{
+  storage, getOwnerLogin:()=> 'timmy', createOperationId:()=> 'foreground-1',
+  backgroundSync: {{
+    reconcile: async () => {{}},
+    requestSync: async () => {{ throw new Error('Background Sync unavailable'); }},
+  }},
+}});
+outbox.enqueueDurably({{repository:'stackchain/api',title:'Retain me',body:'Draft'}}).then(result =>
+  process.stdout.write(JSON.stringify({{
+    background:result.background, durability:result.durability,
+    error:result.error.message, item:result.item, persisted:outbox.list()
+  }}))
+);
+"""
+    output = run_node(script)
+
+    assert output["background"] is False
+    assert output["durability"] == "foreground-only"
+    assert output["error"] == "Background Sync unavailable"
+    assert output["persisted"] == [output["item"]]
+
+
+def test_foreground_delivery_uses_same_atomic_background_claim():
+    script = f"""
+const createIssueOutbox = require({json.dumps(str(OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+const state = {{backgroundCalls:0,directCalls:0}};
+const backgroundSync = {{
+  reconcile: async () => {{}}, requestSync: async () => {{}},
+  send: async (item, login) => {{ state.backgroundCalls += 1; return {{issue:{{number:9}}, claimed:item.id + ':' + login}}; }},
+}};
+const outbox = createIssueOutbox({{
+  storage, backgroundSync, getOwnerLogin:()=> 'timmy', createOperationId:()=> 'shared-claim',
+  fetchJson:async () => {{ state.directCalls += 1; return {{number:10}}; }},
+}});
+outbox.enqueue({{repository:'o/r',title:'One owner'}});
+outbox.flush('timmy').then(result => process.stdout.write(JSON.stringify({{state,result,remaining:outbox.list()}})));
+"""
+    output = run_node(script)
+
+    assert output["state"] == {"backgroundCalls": 1, "directCalls": 0}
+    assert output["result"]["confirmed"][0]["number"] == 9
+    assert output["remaining"] == []
+
+
+def test_foreground_background_delivery_surfaces_permanent_failure_immediately():
+    script = f"""
+const createIssueOutbox = require({json.dumps(str(OUTBOX))});
+const values=new Map();const storage={{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+const error=new Error('Title is invalid');error.status=422;
+const backgroundSync={{reconcile:async()=>{{}},requestSync:async()=>{{}},send:async()=>({{attention:true,error}})}};
+const outbox=createIssueOutbox({{storage,backgroundSync,getOwnerLogin:()=>'timmy',createOperationId:()=>'invalid'}});
+outbox.enqueue({{repository:'o/r',title:'Bad'}});
+outbox.flush('timmy').then(result=>process.stdout.write(JSON.stringify({{result,items:outbox.list()}})));
+"""
+    output = run_node(script)
+
+    assert output["items"][0]["status"] == "attention"
+    assert output["items"][0]["error"] == "Title is invalid"
+    assert output["result"]["confirmed"] == []
+
+
+def test_page_reconciles_worker_success_and_attention_into_visible_outbox():
+    script = f"""
+const createIssueOutbox = require({json.dumps(str(OUTBOX))});
+const values=new Map();
+const storage={{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v)}};
+values.set('stackchain.issue-outbox.v1',JSON.stringify({{version:2,items:[
+  {{id:'sent',operationId:'sent',ownerLogin:'timmy',status:'queued',title:'Done'}},
+  {{id:'bad',operationId:'bad',ownerLogin:'timmy',status:'queued',title:'Fix me'}},
+]}}));
+const outbox=createIssueOutbox({{storage}});
+outbox.reconcileBackground([
+  {{id:'sent',status:'sent'}},
+  {{id:'bad',status:'attention',error:'Title is invalid'}},
+]);
+process.stdout.write(JSON.stringify(outbox.list()));
+"""
+    output = run_node(script)
+
+    assert output == [
+        {
+            "id": "bad",
+            "operationId": "bad",
+            "ownerLogin": "timmy",
+            "status": "attention",
+            "title": "Fix me",
+            "error": "Title is invalid",
+        }
+    ]
+
+
+@pytest.mark.anyio
+async def test_mobile_dashboard_queues_offline_captures_and_exposes_outbox_actions():
+    html = await dashboard()
+
+    assert '<script src="static/issue-outbox.js"></script>' in html
+    assert "const issueOutbox = createIssueOutbox({" in html
+    assert "await issueOutbox.enqueueDurably(captureDraft)" in html
+    assert "Saving for background delivery…" in html
+    assert "Saved for next launch; background delivery unavailable." in html
+    assert "throw new Error('Background Sync unavailable')" in html
+    assert "issueOutbox.retry(queued.id, activeFlushLogin)" in html
+    assert "navigator.onLine" in html
+    assert "activeFlushLogin = contextIdentityFresh ?" in html
+    assert "flushIssueOutbox();" in html
+    assert 'class="draft-send"' in html
+    assert 'class="draft-edit"' in html
+    assert 'Queued for sync' in html
+    assert 'Needs attention' in html
+    assert "issueOutbox.discard(item.outbox_id)" in html
+    assert '.draft-actions { display:grid; grid-template-columns:repeat(auto-fit,minmax(120px,1fr));' in html

tests/test_login_attempt_store.py

@@ -0,0 +1,74 @@
+import sqlite3
+
+from src.login_attempt_store import LoginAttemptStore, client_source
+
+
+def test_forwarded_client_is_used_only_for_explicitly_trusted_proxies():
+    trusted = "127.0.0.0/8, 10.0.0.0/8"
+
+    assert client_source("198.51.100.4", "203.0.113.7", trusted) == "198.51.100.4"
+    assert (
+        client_source("127.0.0.1", "203.0.113.7, 10.1.2.3", trusted)
+        == "203.0.113.7"
+    )
+    assert client_source("127.0.0.1", "not-an-ip", trusted) == "127.0.0.1"
+
+
+def test_failure_budget_is_shared_across_store_instances_and_expires(tmp_path):
+    now = [1_000.0]
+    database = tmp_path / "login-attempts.sqlite3"
+    first = LoginAttemptStore(
+        database,
+        clock=lambda: now[0],
+        max_failures=3,
+        window_seconds=60,
+    )
+    second = LoginAttemptStore(
+        database,
+        clock=lambda: now[0],
+        max_failures=3,
+        window_seconds=60,
+    )
+
+    assert first.retry_after("203.0.113.7") == 0
+    first.record_failure("203.0.113.7")
+    second.record_failure("203.0.113.7")
+    first.record_failure("203.0.113.7")
+
+    assert second.retry_after("203.0.113.7") == 60
+    now[0] = 1_060.0
+    assert first.retry_after("203.0.113.7") == 0
+
+
+def test_recording_a_failure_prunes_expired_source_records(tmp_path):
+    now = [1_000.0]
+    store = LoginAttemptStore(
+        tmp_path / "login-attempts.sqlite3",
+        clock=lambda: now[0],
+        max_failures=3,
+        window_seconds=60,
+    )
+    store.record_failure("203.0.113.1")
+    store.record_failure("203.0.113.2")
+
+    now[0] = 1_060.0
+    store.record_failure("203.0.113.3")
+
+    with sqlite3.connect(store.path) as connection:
+        assert connection.execute("SELECT COUNT(*) FROM login_attempts").fetchone() == (1,)
+
+
+def test_failure_ledger_evicts_oldest_sources_at_its_size_limit(tmp_path):
+    store = LoginAttemptStore(
+        tmp_path / "login-attempts.sqlite3",
+        clock=lambda: 1_000.0,
+        max_failures=3,
+        window_seconds=60,
+        max_entries=2,
+    )
+
+    for address in ("203.0.113.1", "203.0.113.2", "203.0.113.3"):
+        store.record_failure(address)
+
+    with sqlite3.connect(store.path) as connection:
+        assert connection.execute("SELECT COUNT(*) FROM login_attempts").fetchone() == (2,)

tests/test_login_frontend.py

@@ -0,0 +1,60 @@
+import json
+import subprocess
+from pathlib import Path
+
+import pytest
+
+from src.views import login
+
+
+ROOT = Path(__file__).resolve().parents[1]
+LOGIN_JS = ROOT / "frontend" / "login.js"
+
+
+def test_rate_limited_login_disables_submit_and_counts_down():
+    harness = f"""
+const createLoginController = require({json.dumps(str(LOGIN_JS))});
+const state = {{ reset: 0, interval: null }};
+const status = {{ textContent: '' }};
+const button = {{ disabled: false }};
+const form = {{ reset: () => state.reset += 1 }};
+const controller = createLoginController({{
+  form, status, button,
+  fetchImpl: async () => new Response(JSON.stringify({{ detail: 'Too many sign-in attempts' }}), {{ status: 429, headers: {{ 'Retry-After': '2' }} }}),
+  location: {{ replace: () => {{}} }},
+  setIntervalImpl: callback => {{ state.interval = callback; return 1; }},
+  clearIntervalImpl: () => {{}},
+}});
+(async () => {{
+  await controller.submit('never-store-this-token');
+  state.initial = {{ disabled: button.disabled, status: status.textContent, reset: state.reset }};
+  state.interval();
+  state.afterTick = {{ disabled: button.disabled, status: status.textContent }};
+  state.interval();
+  state.finished = {{ disabled: button.disabled, status: status.textContent }};
+  process.stdout.write(JSON.stringify(state));
+}})().catch(error => {{ console.error(error); process.exit(1); }});
+"""
+    result = subprocess.run(
+        ["node", "-e", harness], text=True, capture_output=True, check=True
+    )
+    state = json.loads(result.stdout)
+
+    assert state["initial"] == {
+        "disabled": True,
+        "status": "Too many attempts. Try again in 2 seconds.",
+        "reset": 1,
+    }
+    assert state["afterTick"]["disabled"] is True
+    assert state["finished"] == {
+        "disabled": False,
+        "status": "You can try signing in again.",
+    }
+
+
+@pytest.mark.anyio
+async def test_login_page_loads_rate_limit_controller():
+    html = await login()
+
+    assert '<script src="static/login.js"></script>' in html
+    assert "main{box-sizing:border-box" in html

tests/test_mobile_task_dock.py

@@ -0,0 +1,123 @@
+import json
+import subprocess
+from pathlib import Path
+
+import pytest
+
+from src.views import dashboard
+
+
+DOCK = Path(__file__).resolve().parents[1] / "frontend" / "mobile-task-dock.js"
+
+
+def test_mobile_task_dock_routes_actions_hides_for_overlays_and_restores_focus():
+    script = f"""
+const createDock = require({json.dumps(str(DOCK))});
+class FakeElement {{
+  constructor() {{
+    this.listeners = {{}};
+    this.attributes = {{}};
+    this.classList = {{ values:new Set(), contains:value => this.classList.values.has(value) }};
+    this.hidden = false;
+    this.focuses = 0;
+  }}
+  addEventListener(name, callback) {{ this.listeners[name] = callback; }}
+  click() {{ this.listeners.click({{currentTarget:this}}); }}
+  setAttribute(name, value) {{ this.attributes[name] = value; }}
+  removeAttribute(name) {{ delete this.attributes[name]; }}
+  focus() {{ this.focuses += 1; }}
+}}
+const nav = new FakeElement();
+const buttons = Object.fromEntries(['work','find','new','search','drafts'].map(name => [name, new FakeElement()]));
+const overlay = new FakeElement();
+const calls = [];
+let observerCallback;
+const dock = createDock({{
+  nav, buttons, overlays:[overlay],
+  actions: Object.fromEntries(Object.keys(buttons).map(name => [name, () => calls.push(name)])),
+  observe(callback) {{ observerCallback = callback; return {{disconnect() {{}}}}; }},
+}});
+dock.start();
+buttons.work.click();
+buttons.find.click();
+overlay.classList.values.add('open'); observerCallback();
+const hiddenWhileOpen = nav.hidden;
+overlay.classList.values.delete('open'); observerCallback();
+buttons.drafts.click();
+process.stdout.write(JSON.stringify({{
+  calls, hiddenWhileOpen, hiddenAfterClose:nav.hidden,
+  findFocuses:buttons.find.focuses,
+  current:Object.fromEntries(Object.entries(buttons).map(([name, button]) => [name, button.attributes['aria-current'] || null])),
+}}));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], capture_output=True, text=True
+    )
+
+    assert result.returncode == 0, result.stderr
+    assert json.loads(result.stdout) == {
+        "calls": ["work", "find", "drafts"],
+        "hiddenWhileOpen": True,
+        "hiddenAfterClose": False,
+        "findFocuses": 1,
+        "current": {
+            "work": None,
+            "find": None,
+            "new": None,
+            "search": None,
+            "drafts": "page",
+        },
+    }
+
+
+def test_mobile_task_dock_exposes_and_hides_deduplicated_attention_count():
+    script = f"""
+const createDock = require({json.dumps(str(DOCK))});
+const work = {{ attributes: {{}}, setAttribute(name, value) {{ this.attributes[name] = value; }} }};
+const badge = {{ textContent:'', hidden:true }};
+const dock = createDock({{ nav:{{}}, buttons:{{work}}, attentionBadge:badge }});
+dock.updateAttention(3);
+const pending = {{ count:badge.textContent, hidden:badge.hidden, label:work.attributes['aria-label'] }};
+dock.updateAttention(0);
+process.stdout.write(JSON.stringify({{
+  pending,
+  empty:{{ count:badge.textContent, hidden:badge.hidden, label:work.attributes['aria-label'] }},
+}}));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], capture_output=True, text=True
+    )
+
+    assert result.returncode == 0, result.stderr
+    assert json.loads(result.stdout) == {
+        "pending": {"count": "3", "hidden": False, "label": "Work, 3 items need attention"},
+        "empty": {"count": "0", "hidden": True, "label": "Work"},
+    }
+
+
+@pytest.mark.anyio
+async def test_dashboard_renders_and_wires_phone_safe_task_dock():
+    html = await dashboard()
+
+    assert '<nav class="mobile-task-dock" id="mobile-task-dock" aria-label="Primary tasks">' in html
+    assert html.count('class="mobile-task-action" data-mobile-task=') == 5
+    for task in ("work", "find", "new", "search", "drafts"):
+        assert f'data-mobile-task="{task}"' in html
+    assert 'id="mobile-draft-count"' in html
+    assert 'data-work-filter="attention"' in html
+    assert 'id="mobile-attention-count"' in html
+    assert '.mobile-task-dock { display:none;' in html
+    assert 'grid-template-columns:repeat(5,minmax(0,1fr))' in html
+    assert 'padding-bottom:env(safe-area-inset-bottom)' in html
+    assert '.mobile-task-action { min-width:0; min-height:44px;' in html
+    assert '<script src="static/mobile-task-dock.js"></script>' in html
+    assert "createMobileTaskDock({" in html
+    assert "work: openMobileWork" in html
+    assert "counts.attention ? 'attention' : 'all'" in html
+    assert "qs('[data-work-filter=\"' + filter + '\"]').click()" in html
+    assert "find: () => qs('#find-work').click()" in html
+    assert "new: () => qs('#new-issue').click()" in html
+    assert "search: () => qs('#open-palette').click()" in html
+    assert "drafts: () => qs('[data-work-filter=\"draft\"]').click()" in html
+    assert "draftCount.textContent = sourceDraftCount.textContent" in html
+    assert "mobileTaskDock.updateAttention(counts.attention)" in html

tests/test_my_work.py

@@ -1,4 +1,5 @@
 import json
+import os
 import subprocess
 from pathlib import Path
 
@@ -8,6 +9,8 @@ from src.views import dashboard
 
 
 MY_WORK = Path(__file__).parents[1] / "frontend" / "my-work.js"
+LATER_WORK = Path(__file__).parents[1] / "frontend" / "later-work.js"
+DETAIL_DEFER = Path(__file__).parents[1] / "frontend" / "detail-defer.js"
 REVIEW_SHEET = Path(__file__).parents[1] / "frontend" / "review-sheet.js"
 ISSUE_SHEET = Path(__file__).parents[1] / "frontend" / "issue-sheet.js"
 CREATE_ISSUE_SHEET = Path(__file__).parents[1] / "frontend" / "create-issue-sheet.js"
@@ -310,6 +313,58 @@ process.stdout.write(JSON.stringify(queue.map(item => ({{title:item.title,reason
     ]
 
 
+def test_attention_includes_only_assigned_deadline_and_priority_critical_work():
+    payload = {
+        "user": {"login": "timmy"},
+        "issues": [
+            {"number": 1, "title": "Assigned P0", "repository": "stackchain/api",
+             "labels": ["P0"], "assignees": ["timmy"], "due_date": "2026-08-10T23:59:59Z"},
+            {"number": 2, "title": "Assigned overdue", "repository": "stackchain/api",
+             "labels": [], "assignees": ["timmy"], "due_date": "2026-08-06T23:59:59Z"},
+            {"number": 3, "title": "Assigned due today", "repository": "stackchain/api",
+             "labels": [], "assignees": ["timmy"], "due_date": "2026-08-07T23:59:59Z"},
+            {"number": 4, "title": "Assigned future", "repository": "stackchain/api",
+             "labels": [], "assignees": ["timmy"], "due_date": "2026-08-10T23:59:59Z"},
+            {"number": 5, "title": "Unassigned P0", "repository": "stackchain/api",
+             "labels": ["critical"], "assignees": [], "due_date": "2026-08-10T23:59:59Z"},
+            {"number": 6, "title": "Unassigned overdue", "repository": "stackchain/api",
+             "labels": [], "assignees": [], "due_date": "2026-08-06T23:59:59Z"},
+        ],
+        "pull_requests": [
+            {"number": 7, "title": "Updated review", "repository": "stackchain/web",
+             "labels": [], "assignees": [], "work_reasons": ["review_requested"]},
+        ],
+        "notifications": [
+            {"id": 70, "number": 7, "repository": "stackchain/web", "unread": True,
+             "subject_type": "PullRequest", "url": "https://forge.example/web/pulls/7"},
+        ],
+    }
+    script = f"""
+const buildMyWork = require({json.dumps(str(MY_WORK))});
+const items = buildMyWork({json.dumps(payload)}, new Date('2026-08-07T12:00:00Z'));
+const attention = buildMyWork.filterMyWork(items, 'attention');
+process.stdout.write(JSON.stringify({{
+  titles: attention.map(item => item.title),
+  count: buildMyWork.countMyWork(items).attention,
+  reasons: Object.fromEntries(attention.map(item => [item.title, item.attention_reason])),
+}}));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "titles": ["Assigned P0", "Updated review", "Assigned overdue", "Assigned due today"],
+        "count": 4,
+        "reasons": {
+            "Assigned P0": "P0 priority",
+            "Updated review": "Unread update",
+            "Assigned overdue": "Overdue",
+            "Assigned due today": "Due today",
+        },
+    }
+
+
 def test_confirmed_issue_labels_replace_snapshot_and_reprioritize_queue():
     payload = {
         "user": {"login": "timmy"},
@@ -521,6 +576,33 @@ async def test_mobile_issue_sheet_exposes_touch_sized_due_date_editor_and_card_b
     assert 'padding-bottom:calc(10px + env(safe-area-inset-bottom))' in html
 
 
+@pytest.mark.anyio
+async def test_new_issue_sheet_exposes_touch_safe_release_planning_controls():
+    html = await dashboard()
+
+    assert 'id="create-issue-milestone"' in html
+    assert 'id="create-issue-due-date" type="date"' in html
+    assert 'id="create-issue-milestone-status" aria-live="polite"' in html
+    assert '.create-issue-form select, .create-issue-form input[type="date"] { min-height:44px;' in html
+    assert 'issueCapture.loadMilestones(repository)' in html
+    assert "milestoneId: Number(qs('#create-issue-milestone').value) || null" in html
+    assert "dueDate: qs('#create-issue-due-date').value" in html
+
+
+@pytest.mark.anyio
+async def test_dashboard_launches_share_capture_with_draft_conflict_choices():
+    html = await dashboard()
+
+    assert '<link rel="manifest" href="manifest.webmanifest"' in html
+    assert "issueCapture.stageSharedContent(sharedLaunch)" in html
+    assert 'id="use-shared-content"' in html
+    assert 'id="resume-issue-draft"' in html
+    assert 'id="shared-content-conflict"' in html
+    assert '.shared-content-actions button { min-height:44px;' in html
+    assert "history.replaceState({}, '', cleanUrl)" in html
+    assert "navigator.serviceWorker.register('service-worker.js')" in html
+
+
 @pytest.mark.anyio
 async def test_mobile_my_work_exposes_touch_safe_milestone_lane_and_issue_editor():
     html = await dashboard()
@@ -624,6 +706,270 @@ process.stdout.write(JSON.stringify({{
     assert output["summary"] == "1 review · 2 assigned"
 
 
+def test_attention_filter_unions_updates_and_reviews_without_double_counting():
+    items = [
+        {"title": "Unread issue", "kind": "issue", "has_update": True, "is_review": False},
+        {"title": "Requested review", "kind": "pull", "has_update": False, "is_review": True},
+        {"title": "Updated review", "kind": "pull", "has_update": True, "is_review": True},
+        {"title": "Ordinary assignment", "kind": "issue", "has_update": False, "is_review": False},
+    ]
+    script = f"""
+const buildMyWork = require({json.dumps(str(MY_WORK))});
+const items = {json.dumps(items)};
+process.stdout.write(JSON.stringify({{
+  attention: buildMyWork.filterMyWork(items, 'attention').map(item => item.title),
+  count: buildMyWork.countMyWork(items).attention,
+}}));
+"""
+
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "attention": ["Unread issue", "Requested review", "Updated review"],
+        "count": 3,
+    }
+
+
+def test_later_queue_defers_work_locally_and_scopes_it_to_confirmed_login():
+    script = f"""
+const createLaterWork = require({json.dumps(str(LATER_WORK))});
+const values = new Map();
+const storage = {{
+  getItem:key => values.get(key) || null,
+  setItem:(key,value) => values.set(key,value),
+  removeItem:key => values.delete(key),
+}};
+let login = 'timmy';
+const item = {{kind:'pull',is_review:true,repository:'stackchain/api',number:17,title:'Review me'}};
+const store = createLaterWork({{storage,getLogin:() => login,now:() => new Date('2026-08-08T12:00:00Z')}});
+const deferred = store.defer(item, new Date('2026-08-08T16:00:00Z'));
+const timmy = store.partition([item]);
+login = 'alexander';
+const alexander = store.partition([item]);
+process.stdout.write(JSON.stringify({{
+  deferred,
+  timmy:{{active:timmy.active.length,later:timmy.later}},
+  alexander:{{active:alexander.active.length,later:alexander.later.length}},
+  keys:Array.from(values.keys()),
+}}));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "deferred": True,
+        "timmy": {
+            "active": 0,
+            "later": [{
+                "kind": "pull", "is_review": True, "repository": "stackchain/api",
+                "number": 17, "title": "Review me", "deferred_until": "2026-08-08T16:00:00.000Z",
+            }],
+        },
+        "alexander": {"active": 1, "later": 0},
+        "keys": ["stackchain.later-work.v1.timmy"],
+    }
+
+
+def test_later_queue_prunes_missing_work_and_wakes_expired_items_without_reload():
+    script = f"""
+const createLaterWork = require({json.dumps(str(LATER_WORK))});
+const values = new Map();
+const storage = {{
+  getItem:key => values.get(key) || null,
+  setItem:(key,value) => values.set(key,value),
+  removeItem:key => values.delete(key),
+}};
+let clock = new Date('2026-08-08T12:00:00Z');
+let scheduled = null;
+let wakes = 0;
+const store = createLaterWork({{
+  storage, getLogin:() => 'timmy', now:() => clock,
+  setTimer:(callback, delay) => {{ scheduled = {{callback,delay}}; return 7; }},
+  clearTimer:() => {{}}, onWake:() => {{ wakes += 1; }},
+}});
+const kept = {{kind:'issue',repository:'stackchain/api',number:17,title:'Kept'}};
+const gone = {{kind:'issue',repository:'stackchain/api',number:18,title:'Gone'}};
+store.defer(kept, new Date('2026-08-08T13:00:00Z'));
+store.defer(gone, new Date('2026-08-09T13:00:00Z'));
+const before = store.partition([kept]);
+const persisted = JSON.parse(values.get('stackchain.later-work.v1.timmy'));
+clock = new Date('2026-08-08T13:00:01Z');
+scheduled.callback();
+const after = store.partition([kept]);
+process.stdout.write(JSON.stringify({{
+  before:{{active:before.active.length,later:before.later.length}},
+  persisted:Object.keys(persisted), delay:scheduled.delay, wakes,
+  after:{{active:after.active.map(item => item.title),later:after.later.length}},
+  storageEmpty:!values.has('stackchain.later-work.v1.timmy'),
+}}));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "before": {"active": 0, "later": 1},
+        "persisted": ["issue:stackchain/api:17:"],
+        "delay": 3600000,
+        "wakes": 1,
+        "after": {"active": ["Kept"], "later": 0},
+        "storageEmpty": True,
+    }
+
+
+def test_later_queue_preserves_rank_and_retains_unloaded_paginated_work():
+    script = f"""
+const createLaterWork = require({json.dumps(str(LATER_WORK))});
+const values = new Map();
+const storage = {{
+  getItem:key => values.get(key) || null,
+  setItem:(key,value) => values.set(key,value),
+  removeItem:key => values.delete(key),
+}};
+const store = createLaterWork({{
+  storage,getLogin:() => 'timmy',now:() => new Date('2026-08-08T12:00:00Z'),
+  setTimer:() => 1, clearTimer:() => {{}},
+}});
+const first = {{kind:'issue',repository:'stackchain/api',number:1,title:'Higher priority'}};
+const second = {{kind:'pull',repository:'stackchain/api',number:2,title:'Lower priority'}};
+store.defer(second, new Date('2026-08-09T12:00:00Z'));
+store.defer(first, new Date('2026-08-09T12:00:00Z'));
+store.partition([first], {{pruneMissing:false}});
+const visible = store.partition([first, second], {{pruneMissing:false}});
+process.stdout.write(JSON.stringify({{
+  titles:visible.later.map(item => item.title),
+  records:Object.keys(JSON.parse(values.get('stackchain.later-work.v1.timmy'))).length,
+}}));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "titles": ["Higher priority", "Lower priority"],
+        "records": 2,
+    }
+
+
+def test_later_queue_presets_and_bring_back_now_preserve_work_identity():
+    script = f"""
+const createLaterWork = require({json.dumps(str(LATER_WORK))});
+const values = new Map();
+const storage = {{
+  getItem:key => values.get(key) || null,
+  setItem:(key,value) => values.set(key,value),
+  removeItem:key => values.delete(key),
+}};
+const now = new Date('2026-08-08T12:00:00Z');
+const store = createLaterWork({{storage,getLogin:() => 'timmy',now:() => now}});
+const item = {{kind:'update',repository:'stackchain/api',number:17,notification_id:91}};
+const today = store.presetUntil('today');
+const tomorrow = store.presetUntil('tomorrow');
+store.defer(item, tomorrow);
+const removed = store.restore(item);
+process.stdout.write(JSON.stringify({{
+  today:today.toISOString(), tomorrow:tomorrow.toISOString(), removed,
+  partition:store.partition([item]),
+}}));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True,
+        env={**os.environ, "TZ": "UTC"},
+    )
+
+    assert json.loads(result.stdout) == {
+        "today": "2026-08-08T16:00:00.000Z",
+        "tomorrow": "2026-08-09T09:00:00.000Z",
+        "removed": True,
+        "partition": {"active": [{
+            "kind": "update", "repository": "stackchain/api", "number": 17,
+            "notification_id": 91,
+        }], "later": []},
+    }
+
+
+def test_detail_defer_closes_normal_triage_but_keeps_session_open_for_reconcile():
+    script = f"""
+const createDetailDefer = require({json.dumps(str(DETAIL_DEFER))});
+const calls = [];
+let sessionActive = false;
+const controller = createDetailDefer({{
+  laterWork: {{
+    presetUntil:preset => new Date(preset === 'today' ? '2026-08-08T16:00:00Z' : '2026-08-09T09:00:00Z'),
+    defer:(item, until) => {{ calls.push(['defer', item.title, until.toISOString()]); return true; }},
+  }},
+  session: {{ active:() => sessionActive }},
+  close:() => calls.push(['close']),
+  refresh:() => calls.push(['refresh']),
+  focus:() => calls.push(['focus']),
+  announce:message => calls.push(['announce', message]),
+  formatTime:value => value.toISOString(),
+}});
+const item = {{kind:'issue',repository:'stackchain/api',number:17,title:'Read first'}};
+const outside = controller.defer(item, 'today');
+sessionActive = true;
+const session = controller.defer(item, 'tomorrow');
+process.stdout.write(JSON.stringify({{outside,session,calls}}));
+"""
+
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "outside": True,
+        "session": True,
+        "calls": [
+            ["defer", "Read first", "2026-08-08T16:00:00.000Z"],
+            ["close"],
+            ["refresh"],
+            ["announce", "Deferred until 2026-08-08T16:00:00.000Z. It stays unread and unchanged in Gitea."],
+            ["focus"],
+            ["defer", "Read first", "2026-08-09T09:00:00.000Z"],
+            ["refresh"],
+            ["announce", "Deferred until 2026-08-09T09:00:00.000Z. It stays unread and unchanged in Gitea."],
+        ],
+    }
+
+
+@pytest.mark.anyio
+async def test_mobile_detail_sheets_offer_touch_safe_defer_without_a_gitea_mutation():
+    html = await dashboard()
+
+    assert '<script src="static/detail-defer.js"></script>' in html
+    assert html.count('class="detail-defer"') == 4
+    assert html.count('data-detail-defer-preset="today"') == 4
+    assert html.count('data-detail-defer-preset="tomorrow"') == 4
+    assert 'const detailDefer = createDetailDefer({' in html
+    assert 'selectedUpdate || selectedReview || selectedIssue || selectedPull' in html
+    assert "detailDefer.defer(item, button.dataset.detailDeferPreset)" in html
+    assert ".detail-defer summary, .detail-defer button { min-height:44px;" in html
+    assert "fetch(" not in DETAIL_DEFER.read_text()
+
+
+@pytest.mark.anyio
+async def test_mobile_my_work_wires_touch_safe_non_mutating_later_actions():
+    html = await dashboard()
+
+    assert '<script src="static/later-work.js"></script>' in html
+    assert 'data-work-filter="later"' in html
+    assert 'data-work-count="later"' in html
+    assert 'const laterWork = createLaterWork({' in html
+    assert 'getLogin: () => confirmedOwnerLogin' in html
+    assert 'laterWork.partition(lastMyWork,' in html
+    assert 'data-later-preset="today"' in html
+    assert 'data-later-preset="tomorrow"' in html
+    assert 'data-later-restore' in html
+    assert "Deferred until ' + escapeHtml(fmt(item.deferred_until))" in html
+    assert "laterWork.defer(item, laterWork.presetUntil(button.dataset.laterPreset))" in html
+    assert 'laterWork.restore(item)' in html
+    assert '.later-actions button { min-height:44px;' in html
+    assert 'Deferred work stays unread and unchanged in Gitea.' in html
+
+
 def test_milestone_lane_composes_with_type_filter_and_updates_confirmed_snapshot():
     payload = {
         "issues": [
@@ -815,7 +1161,9 @@ process.stdout.write(JSON.stringify(buildMyWork.countMyWork({json.dumps(items)})
         ["node", "-e", script], check=True, capture_output=True, text=True
     )
 
-    assert json.loads(result.stdout) == {"all": 3, "issue": 1, "pull": 1, "review": 1, "update": 0}
+    assert json.loads(result.stdout) == {
+        "all": 3, "attention": 1, "issue": 1, "pull": 1, "review": 1, "update": 0
+    }
 
 
 def test_work_pager_is_single_flight_and_unions_pull_responsibilities():
@@ -1219,6 +1567,105 @@ first.submit(draft).catch(() => {{
     assert output["number"] == 17
 
 
+def test_issue_capture_normalizes_shared_mobile_content_without_repeating_source_url():
+    script = f"""
+const createIssueCapture = require({json.dumps(str(CREATE_ISSUE_SHEET))});
+const normalized = createIssueCapture.normalizeSharedContent({{
+  title: '  Production alert  ',
+  text: 'Latency crossed the threshold https://status.example/incidents/42',
+  url: 'https://status.example/incidents/42',
+}});
+process.stdout.write(JSON.stringify(normalized));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "title": "Production alert",
+        "body": "Latency crossed the threshold https://status.example/incidents/42",
+    }
+
+
+def test_issue_capture_suggests_a_title_when_mobile_share_only_contains_text():
+    script = f"""
+const createIssueCapture = require({json.dumps(str(CREATE_ISSUE_SHEET))});
+process.stdout.write(JSON.stringify(createIssueCapture.normalizeSharedContent({{
+  text: 'Investigate checkout latency before the release window opens. More diagnostic context follows.'
+}})));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "title": "Investigate checkout latency before the release window opens.",
+        "body": "Investigate checkout latency before the release window opens. More diagnostic context follows.",
+    }
+
+
+def test_issue_capture_keeps_existing_draft_until_shared_content_is_accepted():
+    script = f"""
+const createIssueCapture = require({json.dumps(str(CREATE_ISSUE_SHEET))});
+const values = new Map();
+const storage = {{
+  getItem:key => values.get(key) || null,
+  setItem:(key,value) => values.set(key,value),
+  removeItem:key => values.delete(key),
+}};
+let capture = createIssueCapture({{storage, fetchJson:()=>Promise.resolve({{}})}});
+capture.saveDraft({{
+  repository:'stackchain/api', title:'Existing draft', body:'Keep me', labelIds:[3], milestoneId:9,
+}});
+const staged = capture.stageSharedContent({{title:'Shared alert', text:'Investigate', url:'https://status.example/42'}});
+const before = capture.loadDraft();
+capture = createIssueCapture({{storage, fetchJson:()=>Promise.resolve({{}})}});
+const pendingAfterReload = capture.pendingSharedContent();
+const accepted = capture.acceptSharedContent();
+process.stdout.write(JSON.stringify({{staged, before, pendingAfterReload, accepted, pending:capture.pendingSharedContent()}}));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "staged": {"status": "conflict"},
+        "before": {
+            "repository": "stackchain/api", "title": "Existing draft", "body": "Keep me",
+            "labelIds": [3], "milestoneId": 9,
+        },
+        "pendingAfterReload": {
+            "title": "Shared alert", "body": "Investigate\n\nhttps://status.example/42",
+        },
+        "accepted": {
+            "repository": "stackchain/api", "title": "Shared alert",
+            "body": "Investigate\n\nhttps://status.example/42", "labelIds": [3], "milestoneId": 9,
+        },
+        "pending": None,
+    }
+
+
+def test_issue_capture_can_resume_existing_draft_and_discard_staged_share():
+    script = f"""
+const createIssueCapture = require({json.dumps(str(CREATE_ISSUE_SHEET))});
+const values = new Map();
+const storage = {{getItem:key=>values.get(key)||null, setItem:(key,value)=>values.set(key,value), removeItem:key=>values.delete(key)}};
+const capture = createIssueCapture({{storage, fetchJson:()=>Promise.resolve({{}})}});
+capture.saveDraft({{repository:'stackchain/api', title:'Existing', body:'Keep', labelIds:[]}});
+capture.stageSharedContent({{title:'Incoming', text:'Replace'}});
+capture.discardSharedContent();
+process.stdout.write(JSON.stringify({{draft:capture.loadDraft(), pending:capture.pendingSharedContent()}}));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "draft": {"repository": "stackchain/api", "title": "Existing", "body": "Keep", "labelIds": []},
+        "pending": None,
+    }
+
+
 def test_issue_capture_loads_repository_labels_with_priorities_first():
     script = f"""
 const createIssueCapture = require({json.dumps(str(CREATE_ISSUE_SHEET))});
@@ -1245,6 +1692,50 @@ capture.loadLabels('stackchain/api').then(labels => process.stdout.write(JSON.st
     assert [label["name"] for label in output["labels"]] == ["P0", "critical", "frontend"]
 
 
+def test_issue_capture_persists_and_submits_milestone_and_due_date():
+    script = f"""
+const createIssueCapture = require({json.dumps(str(CREATE_ISSUE_SHEET))});
+const values = new Map();
+const calls = [];
+const storage = {{
+  getItem:key => values.get(key) || null,
+  setItem:(key,value) => values.set(key,value),
+  removeItem:key => values.delete(key),
+}};
+const capture = createIssueCapture({{
+  storage,
+  createOperationId: () => 'planned-operation',
+  fetchJson: (url, options) => {{
+    calls.push({{url, body:options?.body ? JSON.parse(options.body) : null}});
+    if (url.endsWith('/milestones')) return Promise.resolve([{{id:9,title:'August RC'}}]);
+    return Promise.resolve({{number:221, milestone:{{id:9,title:'August RC'}}, due_date:'2026-08-31T23:59:59Z'}});
+  }},
+}});
+const draft = {{repository:'stackchain/api', title:'Ship plan', body:'', labelIds:[], milestoneId:9, dueDate:'2026-08-31'}};
+capture.saveDraft(draft);
+Promise.all([capture.loadMilestones('stackchain/api'), capture.submit(capture.loadDraft())]).then(results =>
+  process.stdout.write(JSON.stringify({{calls, stored:results[1], milestones:results[0]}}))
+);
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+    output = json.loads(result.stdout)
+
+    assert output["calls"] == [
+        {"url": "api/v1/repos/stackchain/api/milestones", "body": None},
+        {
+            "url": "api/v1/repos/stackchain/api/issues",
+            "body": {
+                "title": "Ship plan", "body": "", "label_ids": [],
+                "milestone_id": 9, "due_date": "2026-08-31T23:59:59Z",
+            },
+        },
+    ]
+    assert output["milestones"] == [{"id": 9, "title": "August RC"}]
+    assert output["stored"]["number"] == 221
+
+
 def test_unread_updates_enrich_matching_work_and_keep_unassigned_mentions_actionable():
     payload = {
         "user": {"login": "timmy"},
@@ -1288,7 +1779,9 @@ process.stdout.write(JSON.stringify({{
     assert output["updates"][0]["kind"] == "update"
     assert output["updates"][1]["kind"] == "issue"
     assert output["updates"][1]["url"].endswith("#issuecomment-9")
-    assert output["counts"] == {"all": 2, "issue": 1, "pull": 0, "review": 0, "update": 2}
+    assert output["counts"] == {
+        "all": 2, "attention": 2, "issue": 1, "pull": 0, "review": 0, "update": 2
+    }
     assert output["summary"] == "2 unread updates · 0 reviews · 1 assigned"
 
 
@@ -1619,6 +2112,72 @@ reader.open(item, [item]).then(() =>
     }
 
 
+def test_notification_reader_pages_conversation_single_flight_and_ignores_stale_update():
+    script = f"""
+const build = require({json.dumps(str(MY_WORK))});
+const createPager = require({json.dumps(str(CONVERSATION))});
+const details = {{
+  42: {{id:42, conversation:{{comments:[{{id:41,created_at:'2026-08-07T12:41:00Z'}}],page:3,older_page:2,total:47}}}},
+  43: {{id:43, conversation:{{comments:[{{id:90,created_at:'2026-08-07T13:00:00Z'}}],page:1,older_page:null,total:1}}}},
+}};
+let release;
+const requested = [];
+const states = [];
+const reader = build.createNotificationReader({{
+  load: async id => details[id], createPager,
+  loadConversation: (id, page) => {{
+    requested.push([id, page]);
+    return new Promise(resolve => {{ release = () => resolve({{comments:[{{id:21,created_at:'2026-08-07T12:21:00Z'}}],page:2,older_page:1,total:47}}); }});
+  }},
+  markRead: async () => {{}}, onOpen: () => {{}}, onDetail: () => {{}},
+  onConversation: state => states.push(state.comments.map(item => item.id)),
+  onItems: () => {{}}, onStatus: () => {{}}, onClose: () => {{}},
+}});
+const firstItem = {{notification_id:42}};
+const secondItem = {{notification_id:43}};
+reader.open(firstItem).then(async () => {{
+  const first = reader.loadOlder();
+  const duplicate = reader.loadOlder();
+  await reader.open(secondItem);
+  release();
+  await Promise.all([first, duplicate]);
+  process.stdout.write(JSON.stringify({{requested, states}}));
+}});
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+    output = json.loads(result.stdout)
+
+    assert output["requested"] == [[42, 2]]
+    assert output["states"] == [[41], [90]]
+
+
+def test_notification_reader_appends_a_confirmed_reply_exactly_once():
+    script = f"""
+const build = require({json.dumps(str(MY_WORK))});
+const createPager = require({json.dumps(str(CONVERSATION))});
+const states = [];
+const reader = build.createNotificationReader({{
+  load: async () => ({{conversation:{{comments:[{{id:41}}],page:1,older_page:null,total:1}}}}),
+  loadConversation: async () => ({{}}), createPager,
+  markRead: async () => {{}}, onOpen: () => {{}}, onDetail: () => {{}},
+  onConversation: state => states.push(state.comments.map(item => item.id)),
+  onItems: () => {{}}, onStatus: () => {{}}, onClose: () => {{}},
+}});
+reader.open({{notification_id:42}}).then(() => {{
+  reader.appendReply({{id:91, author:'timmy', body:'Ship it'}});
+  reader.appendReply({{id:91, author:'timmy', body:'Ship it'}});
+  process.stdout.write(JSON.stringify(states));
+}});
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == [[41], [41, 91], [41, 91]]
+
+
 def test_notification_reader_wraps_to_an_earlier_visible_unread_update():
     script = f"""
 const buildMyWork = require({json.dumps(str(MY_WORK))});
@@ -2283,7 +2842,7 @@ async def test_mobile_update_reader_is_in_app_safe_area_aware_and_actionable():
     assert 'id="keep-update-unread"' in html
     assert 'id="mark-update-read-next"' in html
     assert 'id="retry-update-load"' in html
-    assert 'id="update-comment-body"' in html
+    assert 'id="update-comments"' in html
     assert 'id="update-subject-body"' in html
     assert 'id="open-update-gitea"' in html
     assert '.update-sheet-panel { width:min(560px,100%);' in html
@@ -2405,11 +2964,13 @@ async def test_mobile_filters_wrap_show_counts_and_persist_for_the_session():
 
     assert '.work-filters { display:flex; gap:8px; flex-wrap:wrap; }' in html
     assert 'data-work-count="all"' in html
+    assert 'data-work-count="attention"' in html
     assert 'data-work-count="issue"' in html
     assert 'data-work-count="pull"' in html
     assert 'data-work-count="review"' in html
     assert 'data-work-count="update"' in html
-    assert "['all', 'issue', 'pull', 'review', 'update', 'draft'].includes(savedFilter)" in html
+    assert 'data-work-count="later"' in html
+    assert "['all', 'attention', 'issue', 'pull', 'review', 'update', 'later', 'draft'].includes(savedFilter)" in html
     assert 'data-work-count="draft"' in html
     assert 'sessionStorage.getItem(WORK_FILTER_KEY)' in html
     assert 'sessionStorage.setItem(WORK_FILTER_KEY, selectedWorkFilter)' in html
@@ -2870,6 +3431,63 @@ process.stdout.write(JSON.stringify({{removed, draft:draft.snapshot(), progress:
     assert payload["progress"]["reviewedCount"] == 0
 
 
+def test_approved_assigned_review_carries_exact_head_progress_into_merge():
+    script = f"""
+const reviewSheet = require({json.dumps(str(REVIEW_SHEET))});
+const values = new Map();
+const storage = {{
+  getItem: key => values.get(key) || null,
+  setItem: (key, value) => values.set(key, value),
+}};
+const assigned = {{
+  repository:'stackchain/api', number:7,
+  work_reasons:['assigned_to_me', 'review_requested']
+}};
+const carried = reviewSheet.prepareMergeContinuation({{
+  storage, item:assigned, headSha:'abc123',
+  reviewed:['a.py', 'b.py'], decision:'approve'
+}});
+const unassigned = reviewSheet.prepareMergeContinuation({{
+  storage, item:{{...assigned, number:8, work_reasons:['review_requested']}},
+  headSha:'def456', reviewed:['c.py'], decision:'approve'
+}});
+const changesRequested = reviewSheet.prepareMergeContinuation({{
+  storage, item:{{...assigned, number:9}}, headSha:'ghi789',
+  reviewed:['d.py'], decision:'request_changes'
+}});
+process.stdout.write(JSON.stringify({{carried, unassigned, changesRequested, entries:[...values.entries()]}}));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "carried": True,
+        "unassigned": False,
+        "changesRequested": False,
+        "entries": [[
+            "stackchain.pull-review.v1:stackchain/api#7:abc123",
+            '["a.py","b.py"]',
+        ]],
+    }
+
+
+@pytest.mark.anyio
+async def test_successful_assigned_approval_continues_to_merge_in_place():
+    html = await dashboard()
+
+    assert 'id="continue-review-to-merge"' in html
+    assert '#continue-review-to-merge[hidden]' in html and 'display:none' in html
+    assert '.review-merge-continuation' in html and 'position:sticky' in html
+    assert '#continue-review-to-merge { min-height:44px;' in html
+    assert "createReviewController.prepareMergeContinuation" in html
+    assert "reviewed: progressSnapshot.reviewed" in html
+    assert "decision: snapshot.decision" in html
+    assert "workRoute.open({ ...item, kind:'pull', is_review:false }, { replace:true })" in html
+    assert "qs('#continue-review-to-merge').hidden = false" in html
+    assert "qs('#continue-review-to-merge').focus()" in html
+
+
 @pytest.mark.anyio
 async def test_mobile_review_failure_offers_an_in_place_retry_for_the_same_item():
     html = await dashboard()
@@ -2882,6 +3500,23 @@ async def test_mobile_review_failure_offers_an_in_place_retry_for_the_same_item(
     assert "qs('#retry-review-load').focus()" in html
 
 
+@pytest.mark.anyio
+async def test_mobile_update_sheet_renders_and_pages_the_complete_conversation():
+    html = await dashboard()
+
+    update_sheet = html[html.index('id="update-sheet"'):html.index('id="pull-sheet"')]
+    assert '<h2>Full conversation</h2>' in update_sheet
+    assert 'id="update-comments"' in update_sheet
+    assert 'id="load-older-update-comments"' in update_sheet
+    assert 'id="update-conversation-status"' in update_sheet
+    assert '.conversation-more' in html and 'min-height:44px' in html
+    assert "'/conversation?page='" in html
+    assert "loadConversation: fetchNotificationConversation" in html
+    assert "onConversation: renderUpdateConversation" in html
+    assert "notificationReader.loadOlder()" in html
+    assert "notificationReader.appendReply(result)" in html
+
+
 def test_issue_comment_reuses_operation_key_after_reload_until_success():
     script = f"""
 const createIssueSheet = require({json.dumps(str(ISSUE_SHEET))});

tests/test_notification_detail.py

@@ -3,7 +3,59 @@ import asyncio
 import httpx
 import pytest
 
-from src import main
+from src import gitea_proxy, main
+
+
+@pytest.mark.anyio
+async def test_notification_detail_opens_the_newest_conversation_page_in_chronological_order(monkeypatch):
+    requested_pages = []
+
+    def comment(comment_id):
+        return {
+            "id": comment_id,
+            "user": {"login": f"user-{comment_id}"},
+            "body": f"message {comment_id}",
+            "created_at": f"2026-08-06T12:{comment_id:02d}:00Z",
+            "html_url": f"https://forge.example/stackchain/api/issues/7#issuecomment-{comment_id}",
+        }
+
+    def handler(request):
+        if request.url.path.endswith("/notifications/threads/42"):
+            return httpx.Response(200, json={
+                "repository": {"full_name": "stackchain/api"},
+                "subject": {
+                    "type": "Issue", "title": "Retry failed deploy", "state": "open",
+                    "url": "https://forge.example/api/v1/repos/stackchain/api/issues/7",
+                    "latest_comment_url": "https://forge.example/api/v1/repos/stackchain/api/issues/comments/47",
+                    "html_url": "https://forge.example/stackchain/api/issues/7",
+                },
+            })
+        if request.url.path.endswith("/repos/stackchain/api/issues/7/comments"):
+            page = int(request.url.params["page"])
+            requested_pages.append(page)
+            comments = [comment(i) for i in (range(1, 21) if page == 1 else range(41, 48))]
+            return httpx.Response(200, json=comments, headers={"X-Total-Count": "47"})
+        if request.url.path.endswith("/repos/stackchain/api/issues/7"):
+            return httpx.Response(200, json={"body": "Deploy fails after retries."})
+        if request.url.path.endswith("/repos/stackchain/api/issues/comments/47"):
+            return httpx.Response(200, json=comment(47))
+        raise AssertionError(f"unexpected request: {request.url}")
+
+    monkeypatch.setattr(gitea_proxy, "GITEA_URL", "https://forge.example")
+    gitea_proxy.start_client(transport=httpx.MockTransport(handler))
+    try:
+        result = await gitea_proxy.notification_detail(42)
+    finally:
+        await gitea_proxy.stop_client()
+
+    assert requested_pages == [1, 3]
+    assert [item["id"] for item in result["conversation"]["comments"]] == list(range(41, 48))
+    assert result["conversation"] == {
+        "comments": result["conversation"]["comments"],
+        "page": 3,
+        "older_page": 2,
+        "total": 47,
+    }
 
 
 @pytest.mark.anyio
@@ -41,6 +93,32 @@ async def test_notification_detail_api_is_bounded_and_never_cacheable(monkeypatc
     assert calls == [42]
 
 
+@pytest.mark.anyio
+async def test_notification_conversation_api_loads_one_bounded_older_page(monkeypatch):
+    calls = []
+
+    async def conversation(thread_id, page, limit):
+        calls.append((thread_id, page, limit))
+        return {
+            "comments": [{"id": 21, "author": "timmy", "body": "Earlier context"}],
+            "page": page,
+            "older_page": 1,
+            "total": 47,
+        }
+
+    monkeypatch.setattr(main.gitea_proxy, "notification_conversation_page", conversation, raising=False)
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+        response = await client.get("/api/v1/notifications/42/conversation?page=2&limit=20")
+        invalid = await client.get("/api/v1/notifications/42/conversation?page=0&limit=51")
+
+    assert response.status_code == 200
+    assert response.json()["comments"][0]["id"] == 21
+    assert response.headers["cache-control"] == "no-store"
+    assert invalid.status_code == 422
+    assert calls == [(42, 2, 20)]
+
+
 @pytest.mark.anyio
 async def test_notification_detail_timeout_is_sanitized_and_retryable(monkeypatch):
     async def detail(_thread_id):

tests/test_notification_reply.py

@@ -3,7 +3,42 @@ import asyncio
 import httpx
 import pytest
 
-from src import main
+from src import gitea_proxy, main
+
+
+@pytest.mark.anyio
+async def test_notification_reply_returns_the_confirmed_comment_for_exact_once_append(monkeypatch):
+    def handler(request):
+        if request.method == "GET":
+            return httpx.Response(200, json={
+                "repository": {"full_name": "stackchain/api"},
+                "subject": {
+                    "type": "Issue",
+                    "url": "https://forge.example/api/v1/repos/stackchain/api/issues/7",
+                },
+            })
+        return httpx.Response(201, json={
+            "id": 91,
+            "user": {"login": "timmy"},
+            "body": "Please retry the worker.",
+            "created_at": "2026-08-07T19:00:00Z",
+            "html_url": "https://forge.example/stackchain/api/issues/7#issuecomment-91",
+        })
+
+    monkeypatch.setattr(gitea_proxy, "GITEA_URL", "https://forge.example")
+    gitea_proxy.start_client(transport=httpx.MockTransport(handler))
+    try:
+        result = await gitea_proxy.reply_to_notification(42, "Please retry the worker.")
+    finally:
+        await gitea_proxy.stop_client()
+
+    assert result == {
+        "id": 91,
+        "author": "timmy",
+        "body": "Please retry the worker.",
+        "created_at": "2026-08-07T19:00:00Z",
+        "url": "https://forge.example/stackchain/api/issues/7#issuecomment-91",
+    }
 
 
 @pytest.mark.anyio

tests/test_offline_work.py

@@ -0,0 +1,115 @@
+import json
+import subprocess
+from pathlib import Path
+
+import pytest
+
+from src.views import dashboard
+
+
+OFFLINE_WORK = Path(__file__).parents[1] / "frontend" / "offline-work.js"
+
+
+def run_scenario(scenario: str) -> dict:
+    script = f"""
+const createOfflineWorkStore = require({json.dumps(str(OFFLINE_WORK))});
+const values = new Map();
+const storage = {{
+  getItem: key => values.has(key) ? values.get(key) : null,
+  setItem: (key, value) => values.set(key, value),
+  removeItem: key => values.delete(key),
+}};
+{scenario}
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+    return json.loads(result.stdout)
+
+
+def test_opted_in_snapshot_survives_restart_with_only_queue_card_fields():
+    result = run_scenario("""
+const store = createOfflineWorkStore({storage, now:() => new Date('2026-08-07T12:00:00Z')});
+store.setEnabled(true);
+store.save({
+  user:{login:'timmy', full_name:'Timmy', token:'secret'},
+  issues:[{id:1, number:8, title:'Ship offline work', body:'private body', state:'open',
+    repository:'stackchain/dashboard', labels:['P0'], assignees:['timmy'],
+    updated_at:'2026-08-07T11:00:00Z', url:'https://forge.example/issues/8'}],
+  pull_requests:[],
+  notifications:[{id:9, number:8, title:'Updated', unread:true, subject_body:'private comment',
+    repository:'stackchain/dashboard', subject_type:'Issue', updated_at:'2026-08-07T11:30:00Z',
+    url:'https://forge.example/issues/8'}],
+  work_pagination:{issue:{page:1,total:1,has_more:false}},
+  repos:[{private:true}], events:[{body:'private event'}],
+});
+const restarted = createOfflineWorkStore({storage, now:() => new Date('2026-08-07T12:01:00Z')});
+process.stdout.write(JSON.stringify({loaded:restarted.load('timmy'), raw:[...values.values()].join(' ')}));
+""")
+
+    assert result["loaded"]["user"] == {"login": "timmy", "full_name": "Timmy"}
+    assert result["loaded"]["issues"][0]["title"] == "Ship offline work"
+    assert result["loaded"]["notifications"][0]["unread"] is True
+    assert result["loaded"]["saved_at"] == "2026-08-07T12:00:00.000Z"
+    assert "private body" not in result["raw"]
+    assert "private comment" not in result["raw"]
+    assert "private event" not in result["raw"]
+    assert "secret" not in result["raw"]
+
+
+def test_expired_snapshot_is_deleted_and_wrong_user_cannot_load_it():
+    result = run_scenario("""
+const writer = createOfflineWorkStore({storage, now:() => new Date('2026-08-01T12:00:00Z'), maxAgeMs:1000});
+writer.setEnabled(true);
+writer.save({user:{login:'timmy'}, issues:[], pull_requests:[], notifications:[]});
+const wrongUser = writer.load('alexander');
+const expired = createOfflineWorkStore({storage, now:() => new Date('2026-08-01T12:00:02Z'), maxAgeMs:1000});
+const expiredValue = expired.load('timmy');
+process.stdout.write(JSON.stringify({wrongUser, expiredValue, snapshotStillStored:values.has('stackchain.offline-work.snapshot.v1')}));
+""")
+
+    assert result == {
+        "wrongUser": None,
+        "expiredValue": None,
+        "snapshotStillStored": False,
+    }
+
+
+def test_opting_out_deletes_the_persisted_snapshot():
+    result = run_scenario("""
+const store = createOfflineWorkStore({storage});
+store.setEnabled(true);
+store.save({user:{login:'timmy'}, issues:[], pull_requests:[], notifications:[]});
+store.setEnabled(false);
+process.stdout.write(JSON.stringify({enabled:store.enabled(), loaded:store.load()}));
+""")
+
+    assert result == {"enabled": False, "loaded": None}
+
+
+@pytest.mark.anyio
+async def test_dashboard_offers_private_offline_work_controls_and_read_only_hydration():
+    html = await dashboard()
+
+    assert '<script src="static/offline-work.js"></script>' in html
+    assert 'id="keep-work-offline"' in html
+    assert 'Keep My Work available offline' in html
+    assert 'id="clear-offline-work"' in html
+    assert 'id="offline-work-status"' in html
+    assert 'offlineWorkStore.save({' in html
+    assert 'offlineWorkStore.load()' in html
+    assert 'Offline · saved ' in html
+    assert "setOfflineWorkMode(true)" in html
+    assert "if (offlineWorkMode)" in html
+    assert '.offline-work-controls button { min-height:44px;' in html
+
+
+@pytest.mark.anyio
+async def test_initial_http_outage_hydrates_saved_work_and_recovers_on_live_snapshot():
+    html = await dashboard()
+
+    assert "if (!hasContextSnapshot && hydrateOfflineWork('outage')) return;" in html
+    assert "Outage · saved " in html
+    assert "Server unavailable · showing private My Work saved " in html
+    assert "Live details and actions will return automatically." in html
+    assert "function renderLiveSnapshot(snapshot) {\n    setOfflineWorkMode(false);\n    offlineStatus.hidden = true;" in html

tests/test_outbox_coordinator.py

@@ -0,0 +1,134 @@
+import json
+import subprocess
+from pathlib import Path
+
+import pytest
+
+from src.views import dashboard
+
+
+ROOT = Path(__file__).parents[1]
+COORDINATOR = ROOT / "frontend" / "outbox-coordinator.js"
+ISSUE_OUTBOX = ROOT / "frontend" / "issue-outbox.js"
+AUTHORED_OUTBOX = ROOT / "frontend" / "authored-outbox.js"
+
+
+def run_node(script: str):
+    result = subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)
+    return json.loads(result.stdout)
+
+
+def test_two_tabs_share_one_flush_lease_for_each_outbox():
+    script = f"""
+const createCoordinator = require({json.dumps(str(COORDINATOR))});
+const createIssueOutbox = require({json.dumps(str(ISSUE_OUTBOX))});
+const createAuthoredOutbox = require({json.dumps(str(AUTHORED_OUTBOX))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v),removeItem:k=>values.delete(k)}};
+const held = new Set();
+const locks = {{request: async (name, options, work) => {{
+  if (held.has(name)) return work(null);
+  held.add(name);
+  try {{ return await work({{name}}); }} finally {{ held.delete(name); }}
+}}}};
+let releaseIssue, releaseMessage;
+const issueGate = new Promise(resolve => releaseIssue = resolve);
+const messageGate = new Promise(resolve => releaseMessage = resolve);
+let issueCalls = 0, messageCalls = 0;
+const issueA = createIssueOutbox({{storage,getOwnerLogin:()=> 'timmy',createOperationId:()=> 'issue-1',
+  coordinator:createCoordinator({{storage,locks,channelFactory:null,tabId:'a'}}),fetchJson:async()=>{{issueCalls++;await issueGate;return {{number:1}};}}}});
+const issueB = createIssueOutbox({{storage,getOwnerLogin:()=> 'timmy',
+  coordinator:createCoordinator({{storage,locks,channelFactory:null,tabId:'b'}}),fetchJson:async()=>{{issueCalls++;return {{number:1}};}}}});
+issueA.enqueue({{repository:'o/r',title:'One'}});
+const messageA = createAuthoredOutbox({{storage,getOwnerLogin:()=> 'timmy',
+  coordinator:createCoordinator({{storage,locks,channelFactory:null,tabId:'a'}}),fetchJson:async()=>{{messageCalls++;await messageGate;return {{id:1}};}}}});
+const messageB = createAuthoredOutbox({{storage,getOwnerLogin:()=> 'timmy',
+  coordinator:createCoordinator({{storage,locks,channelFactory:null,tabId:'b'}}),fetchJson:async()=>{{messageCalls++;return {{id:1}};}}}});
+messageA.enqueue({{kind:'issue-comment',repository:'o/r',number:1,body:'Reply',operationId:'message-1'}});
+(async()=>{{
+  const issueFirst=issueA.flush('timmy'); const issueSecond=issueB.retry('issue-1', 'timmy');
+  const messageFirst=messageA.flush('timmy'); const messageSecond=messageB.retry('message-1', 'timmy');
+  await Promise.resolve();
+  releaseIssue(); releaseMessage();
+  const results=await Promise.all([issueFirst,issueSecond,messageFirst,messageSecond]);
+  process.stdout.write(JSON.stringify({{issueCalls,messageCalls,results,issueRemaining:issueA.list(),messageRemaining:messageA.list()}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["issueCalls"] == 1
+    assert output["messageCalls"] == 1
+    assert output["issueRemaining"] == []
+    assert output["messageRemaining"] == []
+    assert sum(result.get("lease_skipped", False) for result in output["results"]) == 2
+
+
+def test_fallback_lease_expires_and_stale_owner_cannot_release_successor():
+    script = f"""
+const createCoordinator = require({json.dumps(str(COORDINATOR))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v),removeItem:k=>values.delete(k)}};
+let clock=100;
+let releaseFirst;
+const firstGate=new Promise(resolve=>releaseFirst=resolve);
+const first=createCoordinator({{storage,locks:null,channelFactory:null,tabId:'first',now:()=>clock,leaseMs:50}});
+const second=createCoordinator({{storage,locks:null,channelFactory:null,tabId:'second',now:()=>clock,leaseMs:50}});
+(async()=>{{
+  const running=first.runExclusive('issue', async()=>{{await firstGate;return 'first-done';}});
+  await Promise.resolve();
+  const blocked=await second.runExclusive('issue', async()=> 'too-early');
+  clock=151;
+  const takeover=await second.runExclusive('issue', async()=> 'taken-over');
+  releaseFirst();
+  const original=await running;
+  const after=await second.runExclusive('issue', async()=> 'after-release');
+  process.stdout.write(JSON.stringify({{blocked,takeover,original,after,lease:storage.getItem('stackchain.outbox-lease.issue.v1')}}));
+}})();
+"""
+    output = run_node(script)
+
+    assert output["blocked"]["lease_skipped"] is True
+    assert output["takeover"] == "taken-over"
+    assert output["original"] == "first-done"
+    assert output["after"] == "after-release"
+    assert output["lease"] is None
+
+
+def test_queue_change_notifications_cross_tabs_and_can_unsubscribe():
+    script = f"""
+const createCoordinator = require({json.dumps(str(COORDINATOR))});
+const values = new Map();
+const storage = {{getItem:k=>values.get(k)||null,setItem:(k,v)=>values.set(k,v),removeItem:k=>values.delete(k)}};
+const channels=[];
+function channelFactory() {{
+  const channel={{onmessage:null,postMessage(message){{channels.filter(x=>x!==channel).forEach(x=>x.onmessage?.({{data:message}}));}},close(){{}}}};
+  channels.push(channel); return channel;
+}}
+const first=createCoordinator({{storage,channelFactory,tabId:'first'}});
+const second=createCoordinator({{storage,channelFactory,tabId:'second'}});
+const seen=[];
+const unsubscribe=second.subscribe(change=>seen.push(change));
+first.notify('issue');
+first.notify('authored');
+unsubscribe();
+first.notify('issue');
+process.stdout.write(JSON.stringify({{seen,signal:JSON.parse(storage.getItem('stackchain.outbox-change.v1'))}}));
+"""
+    output = run_node(script)
+
+    assert [change["queue"] for change in output["seen"]] == ["issue", "authored"]
+    assert output["signal"]["queue"] == "issue"
+    assert output["signal"]["tabId"] == "first"
+
+
+@pytest.mark.anyio
+async def test_dashboard_wires_cross_tab_draft_refresh_and_precaches_coordinator():
+    html = await dashboard()
+    worker = (ROOT / "frontend" / "service-worker.js").read_text()
+
+    assert '<script src="static/outbox-coordinator.js"></script>' in html
+    assert "const outboxCoordinator = createOutboxCoordinator" in html
+    assert "coordinator: outboxCoordinator" in html
+    assert "outboxCoordinator.subscribe" in html
+    assert "refreshMyWorkView()" in html
+    assert "BASE + 'static/outbox-coordinator.js'" in worker

tests/test_service_worker.py

@@ -0,0 +1,306 @@
+import json
+import subprocess
+from pathlib import Path
+
+import pytest
+
+
+WORKER = Path(__file__).resolve().parents[1] / "frontend" / "service-worker.js"
+
+
+def run_worker_scenario(scenario: str) -> dict:
+    harness = f"""
+const fs = require('fs');
+const vm = require('vm');
+const listeners = {{}};
+const state = {{ added: [], deleted: [], claimed: false, skipped: false, fetches: [], puts: [], backgroundFlushes: 0, notifications: [], focused: [], opened: [], failFetch: false, fetchStatus: 200, cachedBody: null }};
+const cache = {{
+  addAll: async urls => {{ state.added = urls; }},
+  match: async request => state.cachedBody === null ? null : new Response(state.cachedBody),
+  put: async (request, response) => {{ state.puts.push(String(request.url || request)); }},
+}};
+const context = {{
+  URL, Request, Response,
+  console,
+  self: {{
+    location: {{ href: 'https://forge.example/dashboard/service-worker.js', origin: 'https://forge.example' }},
+    addEventListener: (name, handler) => {{ listeners[name] = handler; }},
+    skipWaiting: async () => {{ state.skipped = true; }},
+    clients: {{
+      claim: async () => {{ state.claimed = true; }},
+      matchAll: async () => state.clientList || [],
+      openWindow: async url => {{ state.opened.push(url); }},
+    }},
+    registration: {{showNotification: async (title, options) => state.notifications.push({{title,options}})}},
+    __issueSync: {{
+      flush: async () => {{ state.backgroundFlushes += 1; return state.flushResult; }},
+      getReceiptPreference: async login => state.receiptLogin === login,
+    }},
+  }},
+  importScripts: () => {{}},
+  caches: {{
+    open: async () => cache,
+    keys: async () => ['stackchain-dashboard-old', 'another-app-cache'],
+    delete: async key => {{ state.deleted.push(key); return true; }},
+    match: async request => cache.match(request),
+  }},
+  fetch: async request => {{
+    state.fetches.push(String(request.url || request));
+    if (state.failFetch) throw new Error('offline');
+    return new Response('network', {{ status: state.fetchStatus }});
+  }},
+}};
+vm.createContext(context);
+vm.runInContext(fs.readFileSync({json.dumps(str(WORKER))}, 'utf8'), context);
+async function dispatch(name, request) {{
+  let pending;
+  let response;
+  listeners[name]({{
+    request,
+    waitUntil: promise => {{ pending = promise; }},
+    respondWith: promise => {{ response = promise; }},
+  }});
+  if (pending) await pending;
+  return response ? await response : null;
+}}
+async function dispatchSync(tag) {{
+  let pending;
+  listeners.sync({{ tag, waitUntil: promise => {{ pending = promise; }} }});
+  if (pending) await pending;
+}}
+async function dispatchMessage(data) {{
+  let pending;
+  listeners.message({{ data, waitUntil: promise => {{ pending = promise; }} }});
+  if (pending) await pending;
+}}
+async function dispatchNotificationClick(route) {{
+  let pending;
+  listeners.notificationclick({{
+    notification: {{data: {{route}}, close: () => {{ state.notificationClosed = true; }}}},
+    waitUntil: promise => {{ pending = promise; }},
+  }});
+  if (pending) await pending;
+}}
+(async () => {{
+{scenario}
+}})().catch(error => {{ console.error(error); process.exit(1); }});
+"""
+    completed = subprocess.run(
+        ["node", "-e", harness], capture_output=True, check=True, text=True
+    )
+    return json.loads(completed.stdout)
+
+
+def test_deadline_attention_flow_ships_in_a_new_shell_cache():
+    source = WORKER.read_text()
+
+    assert "stackchain-dashboard-shell-v19" in source
+
+
+def test_background_sync_event_flushes_closed_app_issue_outbox_only_for_its_tag():
+    result = run_worker_scenario(
+        """
+  await dispatchSync('stackchain-issue-outbox-v1');
+  await dispatchSync('another-app-sync');
+  process.stdout.write(JSON.stringify(state));
+"""
+    )
+
+    assert result["backgroundFlushes"] == 1
+
+
+def test_authenticated_page_message_resumes_queued_background_delivery():
+    result = run_worker_scenario(
+        """
+  await dispatchMessage({type:'stackchain-resume-outbox'});
+  process.stdout.write(JSON.stringify(state));
+"""
+    )
+
+    assert result["backgroundFlushes"] == 1
+
+
+def test_opted_in_background_sync_notifies_privately_and_receipt_tap_focuses_route():
+    result = run_worker_scenario(
+        """
+  state.receiptLogin = 'timmy';
+  state.flushResult = {login:'timmy', receipts:[
+    {id:'capture-1',status:'confirmed',kind:'issue',route:'#/my-work/issue/stackchain/api/44'},
+    {id:'bad-1',status:'attention',kind:'message',route:'#/my-work/drafts'},
+  ]};
+  state.clientList = [{url:'https://forge.example/dashboard/', navigate:async function(url){ this.url=url; }, focus:async function(){ state.focused.push(this.url); }}];
+  await dispatchSync('stackchain-issue-outbox-v1');
+  await dispatchNotificationClick('#/my-work/issue/stackchain/api/44');
+  process.stdout.write(JSON.stringify(state));
+"""
+    )
+
+    assert result["notifications"] == [
+        {
+            "title": "Queued issue created",
+            "options": {
+                "body": "Tap to open it in Stackchain.",
+                "tag": "stackchain-delivery-capture-1",
+                "data": {"route": "#/my-work/issue/stackchain/api/44"},
+            },
+        },
+        {
+            "title": "Queued work needs attention",
+            "options": {
+                "body": "Tap to review it in Drafts.",
+                "tag": "stackchain-delivery-bad-1",
+                "data": {"route": "#/my-work/drafts"},
+            },
+        },
+    ]
+    assert result["focused"] == [
+        "https://forge.example/dashboard/#/my-work/issue/stackchain/api/44"
+    ]
+    assert result["opened"] == []
+    assert result["notificationClosed"] is True
+
+
+def test_background_mutations_obtain_session_bound_csrf_proof():
+    source = WORKER.read_text()
+
+    assert "async function sessionCsrf()" in source
+    assert "BASE + 'api/v1/session'" in source
+    assert "headers.set('X-CSRF-Token', csrf)" in source
+
+
+def test_install_precaches_complete_subpath_scoped_app_shell():
+    result = run_worker_scenario(
+        """
+  await dispatch('install');
+  process.stdout.write(JSON.stringify(state));
+"""
+    )
+
+    assert result["skipped"] is True
+    assert result["added"][0] == "/dashboard/"
+    assert set(result["added"]) == {
+        "/dashboard/",
+        "/dashboard/manifest.webmanifest",
+        "/dashboard/static/icons/stackchain-192.png",
+        "/dashboard/static/icons/stackchain-512.png",
+        "/dashboard/static/session.js",
+        "/dashboard/static/markdown.js",
+        "/dashboard/static/commands.js",
+        "/dashboard/static/search-preview.js",
+        "/dashboard/static/widgets.js",
+        "/dashboard/static/drafts.js",
+        "/dashboard/static/outbox-coordinator.js",
+        "/dashboard/static/issue-outbox.js",
+        "/dashboard/static/authored-outbox.js",
+        "/dashboard/static/offline-work.js",
+        "/dashboard/static/my-work.js",
+        "/dashboard/static/later-work.js",
+        "/dashboard/static/detail-defer.js",
+        "/dashboard/static/pick-work.js",
+        "/dashboard/static/conversation.js",
+        "/dashboard/static/issue-sheet.js",
+        "/dashboard/static/create-issue-sheet.js",
+        "/dashboard/static/pull-sheet.js",
+        "/dashboard/static/review-sheet.js",
+        "/dashboard/static/work-route.js",
+        "/dashboard/static/context-poller.js",
+        "/dashboard/static/mobile-task-dock.js",
+        "/dashboard/static/background-issue-sync.js",
+    }
+
+
+def test_activate_deletes_only_stale_stackchain_caches():
+    result = run_worker_scenario(
+        """
+  await dispatch('activate');
+  process.stdout.write(JSON.stringify(state));
+"""
+    )
+
+    assert result["claimed"] is True
+    assert result["deleted"] == ["stackchain-dashboard-old"]
+
+
+def test_offline_navigation_returns_cached_shell_for_share_target_url():
+    result = run_worker_scenario(
+        """
+  state.failFetch = true;
+  state.cachedBody = 'cached dashboard';
+  const response = await dispatch('fetch', {
+    method: 'GET', mode: 'navigate',
+    url: 'https://forge.example/dashboard/?title=Shared&url=https%3A%2F%2Fexample.com',
+  });
+  process.stdout.write(JSON.stringify({ body: await response.text(), state }));
+"""
+    )
+
+    assert result["body"] == "cached dashboard"
+    assert result["state"]["fetches"] == [
+        "https://forge.example/dashboard/?title=Shared&url=https%3A%2F%2Fexample.com"
+    ]
+
+
+def test_cross_origin_navigation_is_not_intercepted_or_cached():
+    result = run_worker_scenario(
+        """
+  const response = await dispatch('fetch', {
+    method: 'GET', mode: 'navigate', url: 'https://outside.example/page',
+  });
+  process.stdout.write(JSON.stringify({ intercepted: response !== null, state }));
+"""
+    )
+
+    assert result["intercepted"] is False
+    assert result["state"]["fetches"] == []
+    assert result["state"]["puts"] == []
+
+
+@pytest.mark.parametrize("status", [500, 502, 503, 504])
+def test_server_outage_navigation_returns_working_cached_shell_without_replacing_it(status):
+    result = run_worker_scenario(
+        f"""
+  state.fetchStatus = {status};
+  state.cachedBody = 'cached dashboard';
+  const response = await dispatch('fetch', {{
+    method: 'GET', mode: 'navigate', url: 'https://forge.example/dashboard/',
+  }});
+  process.stdout.write(JSON.stringify({{ status: response.status, body: await response.text(), state }}));
+"""
+    )
+
+    assert result["status"] == 200
+    assert result["body"] == "cached dashboard"
+    assert result["state"]["puts"] == []
+
+
+def test_server_outage_without_cached_shell_preserves_network_error():
+    result = run_worker_scenario(
+        """
+  state.fetchStatus = 503;
+  const response = await dispatch('fetch', {
+    method: 'GET', mode: 'navigate', url: 'https://forge.example/dashboard/',
+  });
+  process.stdout.write(JSON.stringify({ status: response.status, body: await response.text(), state }));
+"""
+    )
+
+    assert result["status"] == 503
+    assert result["body"] == "network"
+    assert result["state"]["puts"] == []
+
+
+def test_client_error_navigation_is_not_hidden_by_cached_shell():
+    result = run_worker_scenario(
+        """
+  state.fetchStatus = 401;
+  state.cachedBody = 'cached dashboard';
+  const response = await dispatch('fetch', {
+    method: 'GET', mode: 'navigate', url: 'https://forge.example/dashboard/',
+  });
+  process.stdout.write(JSON.stringify({ status: response.status, body: await response.text(), state }));
+"""
+    )
+
+    assert result["status"] == 401
+    assert result["body"] == "network"
+    assert result["state"]["puts"] == []

tests/test_session_store.py

@@ -0,0 +1,61 @@
+import sqlite3
+
+import pytest
+
+from src import session_store
+from src.session_store import SessionStore, SessionStoreError
+
+
+def test_revocation_is_durable_and_scoped_to_one_session(tmp_path):
+    now = [1_000.0]
+    database = tmp_path / "sessions.sqlite3"
+    first = SessionStore(database, clock=lambda: now[0])
+    first.activate("first-session-secret", 2_000)
+    first.activate("second-session-secret", 2_000)
+
+    reconstructed = SessionStore(database, clock=lambda: now[0])
+    reconstructed.revoke("first-session-secret")
+
+    assert reconstructed.is_active("first-session-secret", 2_000) is False
+    assert reconstructed.is_active("second-session-secret", 2_000) is True
+    assert b"first-session-secret" not in database.read_bytes()
+    assert b"second-session-secret" not in database.read_bytes()
+
+
+def test_validation_does_not_create_a_missing_registry(tmp_path):
+    database = tmp_path / "sessions.sqlite3"
+    store = SessionStore(database, clock=lambda: 1_000.0)
+
+    with pytest.raises(SessionStoreError):
+        store.is_active("unknown-session", 2_000)
+
+    assert database.exists() is False
+
+
+def test_validation_executes_only_a_read_query(tmp_path, monkeypatch):
+    store = SessionStore(tmp_path / "sessions.sqlite3", clock=lambda: 1_000.0)
+    store.activate("active-session", 2_000)
+    statements = []
+    connect = sqlite3.connect
+
+    def traced_connect(*args, **kwargs):
+        connection = connect(*args, **kwargs)
+        connection.set_trace_callback(statements.append)
+        return connection
+
+    monkeypatch.setattr(session_store.sqlite3, "connect", traced_connect)
+
+    assert store.is_active("active-session", 2_000) is True
+    assert [statement.split()[0].upper() for statement in statements] == ["SELECT"]
+
+
+def test_expired_sessions_are_rejected_without_writing_during_validation(tmp_path):
+    now = [1_000.0]
+    store = SessionStore(tmp_path / "sessions.sqlite3", clock=lambda: now[0])
+    store.activate("expiring-session", 1_001)
+
+    now[0] = 1_001.0
+
+    assert store.is_active("expiring-session", 1_001) is False
+    with sqlite3.connect(store.path) as connection:
+        assert connection.execute("SELECT COUNT(*) FROM active_sessions").fetchone() == (1,)

tests/test_work_pages.py

@@ -61,4 +61,53 @@ async def test_work_page_endpoint_rejects_unknown_stream_before_upstream_io(monk
         response = await client.get("/api/v1/work/unknown?page=2")
 
     assert response.status_code == 422
-    assert called is False
+    assert called is False
+
+
+@pytest.mark.anyio
+async def test_pwa_assets_expose_root_scoped_share_target_without_caching_api_data():
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+        manifest = await client.get("/manifest.webmanifest")
+        worker = await client.get("/service-worker.js")
+
+    assert manifest.status_code == 200
+    assert manifest.headers["content-type"].startswith("application/manifest+json")
+    assert manifest.json()["id"] == "./"
+    assert manifest.json()["start_url"] == "./"
+    assert manifest.json()["scope"] == "./"
+    assert manifest.json()["share_target"] == {
+        "action": "./", "method": "GET", "enctype": "application/x-www-form-urlencoded",
+        "params": {"title": "title", "text": "text", "url": "url"},
+    }
+    assert worker.status_code == 200
+    assert worker.headers["content-type"].startswith("application/javascript")
+    assert worker.headers["service-worker-allowed"] == "/"
+    assert "request.url.includes('/api/')" in worker.text
+    assert "request.method !== 'GET'" in worker.text
+    assert "new URL('./', self.location.href).pathname" in worker.text
+
+
+@pytest.mark.anyio
+async def test_dashboard_announces_offline_mode_and_refreshes_after_reconnect():
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+        response = await client.get("/")
+
+    assert response.status_code == 200
+    assert 'id="offline-status"' in response.text
+    assert 'role="status"' in response.text
+    assert 'aria-live="polite"' in response.text
+    assert "window.addEventListener('offline'" in response.text
+    assert "window.addEventListener('online'" in response.text
+    assert "contextPoller.refresh()" in response.text
+
+
+@pytest.mark.anyio
+async def test_dashboard_shell_revalidates_instead_of_being_stored_as_fresh():
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+        response = await client.get("/")
+
+    assert response.status_code == 200
+    assert response.headers["cache-control"] == "no-cache"