fix(secretary): gate CRUD action buttons across all panel pages by permission

Backend already returned 403 for ungranted secretary actions, but the UI still
showed the add/edit/delete buttons (e.g. clinic-services showed «بخش جدید» to a
secretary without services.create). Sweep every secretary-reachable page so each
create/edit/delete/manage control renders only when the matching
usePermissions().can(resource, action) is true. Owner/doctor/clinic are
unaffected — can() returns true when there is no permission context — so this
restricts only secretaries and mirrors the server checks.

Pages/components gated (resource):
- services: ClinicServicesPage, ServiceDetailPage (+ its tabs)
- inventory: InventoryPage, InventoryItemsTable, InventoryActionsMenu, PackagesView
- tags: TagsSettingsPage · staff: StaffPage · discounts: DiscountTab
- sms: SmsWalletPage · insurances: TenantInsuranceContracts
- clinic_doctors: ClinicDoctorsPage + ClinicDoctorsManager (props, default true)
- patients: PatientsListPage, MyPatientsPage, PatientDetailPage (records/notes/
  sessions/attachments/calls/wallet — create/update/delete split)
- appointments: AppointmentsPage (add + empty-slot booking gated by create),
  TurnsTable (status dropdown → read-only badge without update_status; actions
  menu hidden without manage/cancel)
- appointment_settings: AppointmentSettingsPage + ClinicAppointmentSettingsPage
  pass readOnly to ScheduleSection + FreeVisitPrice (new readOnly prop)

Not gated: view/read, search, filter, tabs, navigation, export, and modal
submit buttons reachable only via an already-gated trigger.

tsc clean; full frontend suite 501/501 passes.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

assets/admin/pages/ClinicAppointmentSettingsPage.tsx

@@ -5,6 +5,7 @@ import { UserGroupIcon } from '@heroicons/react/24/outline';
 import { api } from '../lib/api';
 import type { ApiResponse } from '../lib/api';
 import { useAuthStore } from '../stores/authStore';
+import { usePermissions } from '../hooks/usePermissions';
 import SettingsLayout from '../components/layout/SettingsLayout';
 import { ScheduleSection } from '../components/schedule/ScheduleSection';
 import FreeVisitPrice from '../components/FreeVisitPrice';
@@ -18,6 +19,9 @@ import type { ClinicDoctorItem } from '../components/ClinicDoctorsManager';
  */
 function ClinicAppointmentSettingsContent() {
   const { dbUuid, context, availableContexts } = useAuthStore();
+  const { can } = usePermissions();
+  // منشیِ بدون مجوزِ ویرایشِ تنظیمات نوبت‌دهی، فقط مشاهده می‌کند.
+  const apptReadOnly = !can('appointment_settings', 'update');
   const [activeUuid, setActiveUuid] = useState<string | null>(null);
 
   // کاربری که هم پزشک است هم مالک کلینیک، dbUuid‌اش ممکن است uuid پزشک باشد.
@@ -99,8 +103,8 @@ function ClinicAppointmentSettingsContent() {
                 <UserGroupIcon style={{ width: 18, height: 18, color: 'var(--primary)' }} />
                 <span style={{ fontWeight: 600 }}>{selectedDoctor?.name}</span>
               </div>
-              <FreeVisitPrice doctorUuid={selected} />
-              <ScheduleSection doctorUuid={selected} clinicUuid={clinicUuid} />
+              <FreeVisitPrice doctorUuid={selected} readOnly={apptReadOnly} />
+              <ScheduleSection doctorUuid={selected} clinicUuid={clinicUuid} readOnly={apptReadOnly} />
             </div>
           )}
         </>