adding permission check for creation and delete of links

client/src/components/Planner/DayPlanSidebar.test.tsx

@@ -24,6 +24,10 @@ const mockDayNotesState = vi.hoisted(() => ({
   moveNote: vi.fn(),
 }))
 
+const mockPermissionsState = vi.hoisted(() => ({
+  canDo: true,
+}))
+
 // ── Module mocks ────────────────────────────────────────────────────────────
 
 vi.mock('../../api/client', async (importOriginal) => {
@@ -79,7 +83,7 @@ vi.mock('../../store/permissionsStore', async (importOriginal) => {
   const actual = await importOriginal() as any
   return {
     ...actual,
-    useCanDo: () => () => true,
+    useCanDo: () => () => mockPermissionsState.canDo,
   }
 })
 
@@ -125,6 +129,7 @@ beforeEach(() => {
   // Reset mutable day-notes state
   mockDayNotesState.noteUi = {}
   mockDayNotesState.dayNotes = {}
+  mockPermissionsState.canDo = true
   seedStore(useAuthStore, { user: buildUser(), isAuthenticated: true })
   seedStore(useTripStore, { trip: buildTrip({ id: 1 }) })
   seedStore(useSettingsStore, { settings: { time_format: '24h', temperature_unit: 'celsius' } } as any)
@@ -1007,6 +1012,25 @@ describe('DayPlanSidebar', () => {
     revokeObjURL.mockRestore()
   })
 
+  it('FE-PLANNER-DAYPLAN-099: ICS dialog hides delete link button without share_manage permission', async () => {
+    const user = userEvent.setup()
+    mockPermissionsState.canDo = false
+
+    const fetchSpy = vi.spyOn(globalThis, 'fetch').mockResolvedValue({
+      ok: true,
+      json: () => Promise.resolve({ token: 'existing-token' }),
+    } as any)
+
+    render(<DayPlanSidebar {...makeDefaultProps()} />)
+    await user.click(screen.getByText('ICS').closest('button')!)
+
+    await waitFor(() => expect(fetchSpy).toHaveBeenCalledWith('/api/trips/1/subscribe.ics', expect.any(Object)))
+    expect(await screen.findByDisplayValue(`${window.location.origin}/api/shared/existing-token/calendar.ics`)).toBeInTheDocument()
+    expect(screen.queryByRole('button', { name: 'Delete link' })).not.toBeInTheDocument()
+
+    fetchSpy.mockRestore()
+  })
+
   // ── openAddNote button click ──────────────────────────────────────────
 
   it('FE-PLANNER-DAYPLAN-059: clicking Add Note button calls openAddNote', async () => {

client/src/components/Planner/DayPlanSidebar.tsx

@@ -225,6 +225,7 @@ const DayPlanSidebar = React.memo(function DayPlanSidebar({
   const tripActions = useRef(useTripStore.getState()).current
   const can = useCanDo()
   const canEditDays = can('day_edit', trip)
+  const canManageShare = can('share_manage', trip)
 
   const { noteUi, setNoteUi, noteInputRef, dayNotes, openAddNote: _openAddNote, openEditNote: _openEditNote, cancelNote, saveNote, deleteNote: _deleteNote, moveNote: _moveNote } = useDayNotes(tripId)
 
@@ -2270,23 +2271,27 @@ const DayPlanSidebar = React.memo(function DayPlanSidebar({
                     {icsCopied ? <><Check size={10} /> {t('common.copied')}</> : <><Copy size={10} /> {t('common.copy')}</>}
                   </button>
                 </div>
-                <button onClick={handleIcsDeleteLink} style={{
+                {canManageShare && (
-                  display: 'flex', alignItems: 'center', justifyContent: 'center', gap: 5,
+                  <button onClick={handleIcsDeleteLink} style={{
-                  padding: '6px 0', borderRadius: 8, border: '1px solid rgba(239,68,68,0.3)',
+                    display: 'flex', alignItems: 'center', justifyContent: 'center', gap: 5,
-                  background: 'rgba(239,68,68,0.06)', color: '#ef4444', fontSize: 11, fontWeight: 500,
+                    padding: '6px 0', borderRadius: 8, border: '1px solid rgba(239,68,68,0.3)',
-                  cursor: 'pointer', fontFamily: 'inherit',
+                    background: 'rgba(239,68,68,0.06)', color: '#ef4444', fontSize: 11, fontWeight: 500,
-                }}>
+                    cursor: 'pointer', fontFamily: 'inherit',
-                  <Trash2 size={11} /> {t('dayplan.calendarDeleteLink')}
+                  }}>
-                </button>
+                    <Trash2 size={11} /> {t('dayplan.calendarDeleteLink')}
+                  </button>
+                )}
               </div>
             ) : (
-              <button onClick={handleIcsCreateLink} style={{
+              <button onClick={handleIcsCreateLink}
+                disabled={!canManageShare}
+                style={{
                 display: 'flex', alignItems: 'center', justifyContent: 'center', gap: 6,
                 width: '100%', padding: '8px 0', borderRadius: 8, border: '1px dashed var(--border-primary)',
                 background: 'none', color: 'var(--text-muted)', fontSize: 12, fontWeight: 500,
                 cursor: 'pointer', fontFamily: 'inherit',
               }}>
-                <Link2 size={12} /> {t('dayplan.calendarCreateLink')}
+                {canManageShare ? <><Link2 size={12} /> {t('dayplan.calendarCreateLink')}</> : <>{t('dayplan.calendarCreateLinkNoPermission')}</>}
               </button>
             )}
             <button

client/src/i18n/translations/en.ts

@@ -308,6 +308,7 @@ const en: Record<string, string | { name: string; category: string }[]> = {
   'dayplan.calendarShareTitle': 'Calendar share',
   'dayplan.calendarShareDescription': 'Create a subscription link for calendar apps, or download the ICS file.',
   'dayplan.calendarCreateLink': 'Create link',
+  'dayplan.calendarCreateLinkNoPermission': 'You do not have permission to create calendar links for this trip.',
   'dayplan.calendarDeleteLink': 'Delete link',
   'dayplan.calendarDownloadFile': 'Download ICS file',
   'dayplan.calendarLinkFailed': 'Calendar link failed',

server/src/routes/trips.ts

@@ -382,9 +382,13 @@ router.get('/:id/subscribe.ics', authenticate, (req: Request, res: Response) =>
 
 router.post('/:id/subscribe.ics', authenticate, (req: Request, res: Response) => {
   const authReq = req as AuthRequest;
-  if (!canAccessTrip(req.params.id, authReq.user.id)) {
+  const access = canAccessTrip(req.params.id, authReq.user.id);
+  if (!access) {
     return res.status(404).json({ error: 'Trip not found' });
   }
+  if (!checkPermission('share_manage', authReq.user.role, access.user_id, authReq.user.id, access.user_id !== authReq.user.id)) {
+    return res.status(403).json({ error: 'No permission' });
+  }
 
   const result = createOrUpdateCalendarShareLink(req.params.id, authReq.user.id);
   const host = req.get('host');
@@ -404,6 +408,9 @@ router.delete('/:id/subscribe.ics', authenticate, (req: Request, res: Response)
   const authReq = req as AuthRequest;
   const access = canAccessTrip(req.params.id, authReq.user.id);
   if (!access) return res.status(404).json({ error: 'Trip not found' });
+  if (!checkPermission('share_manage', authReq.user.role, access.user_id, authReq.user.id, access.user_id !== authReq.user.id)) {
+    return res.status(403).json({ error: 'No permission' });
+  }
 
   deleteCalendarShareLink(req.params.id);
   res.json({ success: true });

server/tests/integration/trips.test.ts

@@ -921,6 +921,38 @@ describe('ICS export', () => {
 
     expect(res.status).toBe(404);
   });
+
+  it('TRIP-025 — member without share_manage cannot create subscribe link → 403', async () => {
+    const { user: owner } = createUser(testDb);
+    const { user: member } = createUser(testDb);
+    const trip = createTrip(testDb, owner.id, { title: 'Shared Trip' });
+    addTripMember(testDb, trip.id, member.id);
+
+    const res = await request(app)
+      .post(`/api/trips/${trip.id}/subscribe.ics`)
+      .set('Host', 'trek.example.com')
+      .set('Cookie', authCookie(member.id));
+
+    expect(res.status).toBe(403);
+  });
+
+  it('TRIP-025 — member without share_manage cannot delete subscribe link → 403', async () => {
+    const { user: owner } = createUser(testDb);
+    const { user: member } = createUser(testDb);
+    const trip = createTrip(testDb, owner.id, { title: 'Shared Trip' });
+    addTripMember(testDb, trip.id, member.id);
+
+    await request(app)
+      .post(`/api/trips/${trip.id}/subscribe.ics`)
+      .set('Host', 'trek.example.com')
+      .set('Cookie', authCookie(owner.id));
+
+    const res = await request(app)
+      .delete(`/api/trips/${trip.id}/subscribe.ics`)
+      .set('Cookie', authCookie(member.id));
+
+    expect(res.status).toBe(403);
+  });
 });
 
 // ─────────────────────────────────────────────────────────────────────────────