diff --git a/apps/api/tests/broker/outboxWorker.test.ts b/apps/api/tests/broker/outboxWorker.test.ts
index e3755c2..34293c3 100644
--- a/apps/api/tests/broker/outboxWorker.test.ts
+++ b/apps/api/tests/broker/outboxWorker.test.ts
@@ -1018,3 +1018,79 @@ describe('runOutboxDrain — reminderLeadMinutes VALARM wiring (CAL-13/CAL-14, P
     expect(capturedIcsString as string).toContain('VALUE=DATE-TIME');
   });
 });
+
+// ─── Phase 11 Plan 05 WR-02: .max(10080) on reminderLeadMinutes in outboxPayloadSchema ──
+// A payload with reminderLeadMinutes=10081 exceeds the 1-week UI cap (10080 min).
+// The outboxPayloadSchema must reject it so the row is hard-failed rather than
+// letting an out-of-range value silently flow into the VALARM trigger.
+
+describe('runOutboxDrain — WR-02: reminderLeadMinutes max(10080) in outboxPayloadSchema', () => {
+  beforeEach(() => {
+    vi.resetAllMocks();
+    mockPendingRows = [];
+    wireMockChain();
+  });
+
+  it('WR-02: payload with reminderLeadMinutes=10081 is hard-failed (validation error)', async () => {
+    const { createCalendarEvent } = await import('../../src/broker/write.js');
+    vi.mocked(createCalendarEvent).mockResolvedValue(makeResponse(201));
+
+    const payload = JSON.stringify({
+      title: 'Over-cap reminder',
+      allDay: false,
+      start: '2026-12-15T10:00:00Z',
+      end: '2026-12-15T11:00:00Z',
+      reminderLeadMinutes: 10081, // 1 min over the 1-week cap
+    });
+    mockPendingRows = [makeRow({ payload })];
+
+    await runOutboxDrain();
+
+    // Must NOT dispatch to CalDAV — validation must fire before ICS assembly
+    expect(createCalendarEvent).not.toHaveBeenCalled();
+    const setArg = mockUpdateSet.mock.calls[0]?.[0] as { status?: string; lastError?: string };
+    expect(setArg?.status).toBe('failed');
+    expect(setArg?.lastError).toMatch(/validation/i);
+  });
+
+  it('WR-02: payload with reminderLeadMinutes=10080 (boundary) passes validation and dispatches', async () => {
+    const { createCalendarEvent } = await import('../../src/broker/write.js');
+    vi.mocked(createCalendarEvent).mockResolvedValue(makeResponse(201));
+
+    const payload = JSON.stringify({
+      title: 'Max-cap reminder',
+      allDay: false,
+      start: '2026-12-15T10:00:00Z',
+      end: '2026-12-15T11:00:00Z',
+      reminderLeadMinutes: 10080, // exactly 1 week — must be allowed
+    });
+    mockPendingRows = [makeRow({ payload })];
+
+    await runOutboxDrain();
+
+    // Row is valid — CalDAV write must have been dispatched
+    expect(createCalendarEvent).toHaveBeenCalledTimes(1);
+    const setArg = mockUpdateSet.mock.calls[0]?.[0] as { status?: string };
+    expect(setArg?.status).toBe('done');
+  });
+
+  it('WR-02: payload with reminderLeadMinutes=null (explicit clear) passes validation', async () => {
+    const { createCalendarEvent } = await import('../../src/broker/write.js');
+    vi.mocked(createCalendarEvent).mockResolvedValue(makeResponse(201));
+
+    const payload = JSON.stringify({
+      title: 'Clear reminder',
+      allDay: false,
+      start: '2026-12-15T10:00:00Z',
+      end: '2026-12-15T11:00:00Z',
+      reminderLeadMinutes: null,
+    });
+    mockPendingRows = [makeRow({ payload })];
+
+    await runOutboxDrain();
+
+    // null (explicit clear) must pass .nullable()
+    const setArg = mockUpdateSet.mock.calls[0]?.[0] as { status?: string };
+    expect(setArg?.status).not.toBe('failed');
+  });
+});
diff --git a/apps/api/tests/routes/events.test.ts b/apps/api/tests/routes/events.test.ts
index f257899..18e727b 100644
--- a/apps/api/tests/routes/events.test.ts
+++ b/apps/api/tests/routes/events.test.ts
@@ -930,3 +930,77 @@ describe('GET /api/events/writable-calendars', () => {
     expect(body.calendars.length).toBe(1);
   });
 });
+
+// ---------------------------------------------------------------------------
+// WR-02: eventFieldsSchema must reject reminderLeadMinutes > 10080 (Phase 11 Plan 05)
+// 10080 = 1 week in minutes; the UI cap prevents accidental over-wide lead values.
+// ---------------------------------------------------------------------------
+describe('WR-02: reminderLeadMinutes .max(10080) in eventFieldsSchema (Phase 11 Plan 05)', () => {
+  beforeEach(() => {
+    // Wire a calendar row so POST /create reaches schema validation (not 403)
+    mockDbRows = [
+      {
+        id: 1,
+        url: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
+        displayName: 'Default',
+        color: '#4A90D9',
+        userId: 1,
+        isShared: false,
+      },
+    ];
+    const mockSimpleWhere = vi.fn().mockImplementation(() => Promise.resolve(mockDbRows));
+    mockFromFn.mockReturnValue({ where: mockSimpleWhere });
+    mockSelectFn.mockReturnValue({ from: mockFromFn });
+  });
+
+  it('returns 400 for reminderLeadMinutes=10081 on POST /create', async () => {
+    const { app } = await import('../../src/index.js');
+    const res = await app.request('/api/events/create', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        title: 'Over-cap',
+        allDay: false,
+        start: '2026-12-15T10:00:00Z',
+        end: '2026-12-15T11:00:00Z',
+        calendarUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
+        reminderLeadMinutes: 10081,
+      }),
+    });
+    expect(res.status).toBe(400);
+  });
+
+  it('returns 202 for reminderLeadMinutes=10080 (boundary) on POST /create', async () => {
+    const { app } = await import('../../src/index.js');
+    const res = await app.request('/api/events/create', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        title: 'Max-cap',
+        allDay: false,
+        start: '2026-12-15T10:00:00Z',
+        end: '2026-12-15T11:00:00Z',
+        calendarUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
+        reminderLeadMinutes: 10080,
+      }),
+    });
+    expect(res.status).toBe(202);
+  });
+
+  it('returns 202 for reminderLeadMinutes=null (explicit clear) on POST /create', async () => {
+    const { app } = await import('../../src/index.js');
+    const res = await app.request('/api/events/create', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        title: 'Clear reminder',
+        allDay: false,
+        start: '2026-12-15T10:00:00Z',
+        end: '2026-12-15T11:00:00Z',
+        calendarUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
+        reminderLeadMinutes: null,
+      }),
+    });
+    expect(res.status).toBe(202);
+  });
+});