diff --git a/dashboards/tracker-web/docs/roadmaps/UX_INTEGRATION_BYTELYST.md b/dashboards/tracker-web/docs/roadmaps/UX_INTEGRATION_BYTELYST.md
index 3feea67e..0d6b66ef 100644
--- a/dashboards/tracker-web/docs/roadmaps/UX_INTEGRATION_BYTELYST.md
+++ b/dashboards/tracker-web/docs/roadmaps/UX_INTEGRATION_BYTELYST.md
@@ -219,11 +219,11 @@ pnpm build      # final gate
       instead of bespoke buttons; `Tooltip` on truncated titles / status dots.
       (SegmentedControl now drives the roadmap board/list toggle — the app's only board↔list
       toggle — replacing the bespoke `blue-600` buttons; `Tooltip` wraps the truncated board
-      card titles. e2e toggle selector updated button→radio. UX-12.1 verified: tc/lint/test 162 ✓/build/e2e 18 ✓)
+      card titles. e2e toggle selector updated button→radio. UX-12.1 `ddf25cf5`: tc/lint/test 162 ✓/build/e2e 18 ✓)
 - [x] **12.2** Item detail: move row/item actions into an `ActionMenu`, and render the item's
       activity/comment history with `Timeline`.
       (Edit + Delete now live in an `ActionMenu` in the page header; comments render via
-      `Timeline`. UX-12.2 verified: tc/lint/test 162 ✓/build/e2e 18 ✓.)
+      `Timeline`. UX-12.2 `32dac7d4`: tc/lint/test 162 ✓/build/e2e 18 ✓.)
 - [ ] **12.3** _(stretch — needs HTML-capable description/comment storage)_ Swap the plain
       description/comment `<textarea>` for `RichTextEditor`, and render saved content with
       `RichTextViewer`. **Only do this if** the backend stores/returns rich HTML safely;
@@ -241,8 +241,16 @@ pnpm build      # final gate
 
 - [ ] **13.1** Add `@bytelyst/notifications-ui`; mount a `NotificationCenter` bell in the header
       (or AppShell from UX-8) fed by the notifications API, with `InboxItem` rows.
-- [ ] **13.2** Use `BannerStack` for top-of-page system/maintenance messages and `Announcement`
+      DEFERRED (data-gated): tracker exposes no notifications feed — the `/api/tracker/*` proxy
+      surfaces only items/comments/votes/roadmap, with no notifications endpoint. Per the wave
+      gate, `NotificationCenter`/`InboxItem` are left unbuilt until a feed exists. The dep is
+      added and the imports are smoke-tested so a future feed wiring starts from green.
+- [x] **13.2** Use `BannerStack` for top-of-page system/maintenance messages and `Announcement`
       for a dismissible "what's new" pill. **Verify:** `pnpm typecheck && pnpm lint && pnpm build`.
+      (Added `@bytelyst/notifications-ui` workspace dep with a minimal `link:` lockfile entry;
+      `SystemBanners` mounts `BannerStack` (env `NEXT_PUBLIC_SYSTEM_NOTICE`, dismissible) +
+      a localStorage-dismissible `Announcement` at the top of the dashboard shell. UX-13.2
+      verified: tc/lint/test 165 ✓/build/e2e 18 ✓.)
 
 ## Cross-cutting (run continuously)
 
@@ -268,7 +276,7 @@ pnpm build      # final gate
 
 ```
 Core   : UX-1 ✅  UX-2 ⬜  UX-3 ⬜  UX-4 ⬜  UX-5 ⬜  UX-6 ⬜  UX-7 ⬜  UX-8 ⬜
-Expand : UX-9 ✅  UX-10 ✅  UX-11 ✅  UX-12 ✅  UX-13 ⬜   (stretch: 12.3, 13.*)
+Expand : UX-9 ✅  UX-10 ✅  UX-11 ✅  UX-12 ✅  UX-13 ✅   (stretch: 12.3, 13.1 deferred — see notes)
 ```
 
 **UX-1 is done** (token bridge + Primitives adapter, commit `dc01dd02`) — the `--bl-*` bridge is
diff --git a/dashboards/tracker-web/package.json b/dashboards/tracker-web/package.json
index 27501be2..a0965390 100644
--- a/dashboards/tracker-web/package.json
+++ b/dashboards/tracker-web/package.json
@@ -31,6 +31,7 @@
     "@bytelyst/data-table": "workspace:*",
     "@bytelyst/design-tokens": "workspace:*",
     "@bytelyst/errors": "workspace:*",
+    "@bytelyst/notifications-ui": "workspace:*",
     "@bytelyst/telemetry-client": "workspace:*",
     "@bytelyst/logger": "workspace:*",
     "@bytelyst/ui": "workspace:*",
diff --git a/dashboards/tracker-web/src/__tests__/notifications-ui-imports.test.ts b/dashboards/tracker-web/src/__tests__/notifications-ui-imports.test.ts
new file mode 100644
index 00000000..d8f43395
--- /dev/null
+++ b/dashboards/tracker-web/src/__tests__/notifications-ui-imports.test.ts
@@ -0,0 +1,36 @@
+/**
+ * Smoke test for the @bytelyst/notifications-ui wiring used by the dashboard
+ * system banners (UX-13.2).
+ *
+ * Pure import test (no DOM): guards that the notifications-ui surfaces the
+ * SystemBanners component depends on resolve and build. NotificationCenter
+ * (UX-13.1) is intentionally not adopted (no notifications feed) but is asserted
+ * here so a future feed wiring starts from a known-good import.
+ *
+ * @see docs/roadmaps/UX_INTEGRATION_BYTELYST.md (UX-13)
+ */
+
+import { describe, it, expect } from 'vitest';
+import {
+  BannerStack,
+  Announcement,
+  InboxItem,
+  NotificationCenter,
+} from '@bytelyst/notifications-ui';
+
+describe('notifications-ui wiring', () => {
+  it('resolves BannerStack (shipped in UX-13.2)', () => {
+    expect(BannerStack).toBeDefined();
+    expect(typeof BannerStack).toBe('function');
+  });
+
+  it('resolves Announcement (shipped in UX-13.2)', () => {
+    expect(Announcement).toBeDefined();
+    expect(typeof Announcement).toBe('function');
+  });
+
+  it('resolves InboxItem + NotificationCenter (reserved for a future feed, UX-13.1)', () => {
+    expect(InboxItem).toBeDefined();
+    expect(NotificationCenter).toBeDefined();
+  });
+});
diff --git a/dashboards/tracker-web/src/app/dashboard/layout.tsx b/dashboards/tracker-web/src/app/dashboard/layout.tsx
index ad60edde..086598ca 100644
--- a/dashboards/tracker-web/src/app/dashboard/layout.tsx
+++ b/dashboards/tracker-web/src/app/dashboard/layout.tsx
@@ -5,6 +5,7 @@ import { useRouter } from 'next/navigation';
 import Link from 'next/link';
 import { useAuth } from '@/lib/auth-context';
 import { ProductSwitcher } from '@/components/product-switcher';
+import { SystemBanners } from '@/components/system-banners';
 
 const NAV_ITEMS = [
   { href: '/dashboard', label: 'Overview' },
@@ -65,7 +66,10 @@ export default function DashboardLayout({ children }: { children: React.ReactNod
       </header>
 
       {/* Page content */}
-      <main className="mx-auto max-w-7xl px-4 py-6">{children}</main>
+      <main className="mx-auto max-w-7xl px-4 py-6">
+        <SystemBanners />
+        {children}
+      </main>
     </div>
   );
 }
diff --git a/dashboards/tracker-web/src/components/system-banners.tsx b/dashboards/tracker-web/src/components/system-banners.tsx
new file mode 100644
index 00000000..e470972a
--- /dev/null
+++ b/dashboards/tracker-web/src/components/system-banners.tsx
@@ -0,0 +1,67 @@
+'use client';
+
+import { useEffect, useState } from 'react';
+import { BannerStack, Announcement, type BannerItem } from '@bytelyst/notifications-ui';
+
+/**
+ * Top-of-page system messaging for the dashboard (UX-13.2).
+ *
+ * Tracker has no notifications feed yet, so UX-13.1 (NotificationCenter) is
+ * deferred. Per the wave's data-gate we ship the client-side surfaces only:
+ *  - `BannerStack` renders dismissible system/maintenance notices sourced from
+ *    `NEXT_PUBLIC_SYSTEM_NOTICE` (renders nothing when unset).
+ *  - `Announcement` shows a dismissible "what's new" pill, remembered per
+ *    version in localStorage.
+ *
+ * All colors come from the bridged `--bl-*` tokens (no hardcoded literals).
+ */
+
+const SYSTEM_NOTICE = process.env.NEXT_PUBLIC_SYSTEM_NOTICE || '';
+const WHATS_NEW_KEY = 'tracker_whatsnew_dismissed';
+// Bump when the "what's new" copy changes to re-surface it once.
+const WHATS_NEW_VERSION = '2026-05-ux';
+
+export function SystemBanners() {
+  const [banners, setBanners] = useState<BannerItem[]>([]);
+  const [showWhatsNew, setShowWhatsNew] = useState(false);
+
+  useEffect(() => {
+    if (SYSTEM_NOTICE) {
+      setBanners([
+        {
+          id: 'system-notice',
+          kind: 'warning',
+          title: 'System notice',
+          body: SYSTEM_NOTICE,
+        },
+      ]);
+    }
+    if (typeof window !== 'undefined') {
+      setShowWhatsNew(localStorage.getItem(WHATS_NEW_KEY) !== WHATS_NEW_VERSION);
+    }
+  }, []);
+
+  const dismissWhatsNew = () => {
+    if (typeof window !== 'undefined') {
+      localStorage.setItem(WHATS_NEW_KEY, WHATS_NEW_VERSION);
+    }
+    setShowWhatsNew(false);
+  };
+
+  if (banners.length === 0 && !showWhatsNew) return null;
+
+  return (
+    <div className="mb-6 space-y-3">
+      <BannerStack
+        banners={banners}
+        onDismiss={id => setBanners(prev => prev.filter(b => b.id !== id))}
+      />
+      {showWhatsNew && (
+        <Announcement tag="NEW" cta={{ label: 'Got it', onSelect: dismissWhatsNew }}>
+          Tracker now runs on the shared ByteLyst design system — consistent header band, accessible
+          controls, and full dark-mode parity.
+        </Announcement>
+      )}
+    </div>
+  );
+}
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 5b18f48a..0ea5095a 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -264,6 +264,9 @@ importers:
       '@bytelyst/logger':
         specifier: workspace:*
         version: link:../../packages/logger
+      '@bytelyst/notifications-ui':
+        specifier: workspace:*
+        version: link:../../packages/notifications-ui
       '@bytelyst/telemetry-client':
         specifier: workspace:*
         version: link:../../packages/telemetry-client