feat(appointments): edit page + filters modal — phase C2/C3

- AppointmentEditPage (edit.pdf): full-page edit of بخش/سرویس/پرسنل, Jalali
  date + start/end time, deposit, status and notes; hydrates from
  GET /appointment/{uuid} and saves through the general PATCH with the
  optimistic-lock version. Routed at /admin/appointments/:uuid/edit (the
  actions-menu ویرایش target).
- AppointmentFiltersModal (filter-desktop.pdf): name/national-code search,
  بخش/سرویس selects, six status checkboxes (لغو شده covers both cancel
  reasons), gender radios, حذف همه reset. Filtering is client-side over the
  loaded day via the pure applyAppointmentFilters; toolbar gains the filter
  button with an active indicator.
- /my/appointments rows now include patient_national_code and patient_gender
  so the filters have data to match on.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

assets/admin/App.tsx

@@ -14,6 +14,7 @@ import ClinicsPage from './pages/ClinicsPage';
 import ClinicDetailPage from './pages/ClinicDetailPage';
 import AppointmentsPage from './pages/AppointmentsPage';
 import AppointmentDetailPage from './pages/AppointmentDetailPage';
+import AppointmentEditPage from './pages/AppointmentEditPage';
 import PaymentsPage from './pages/PaymentsPage';
 import PaymentDetailPage from './pages/PaymentDetailPage';
 import SettlementsPage from './pages/SettlementsPage';
@@ -152,6 +153,7 @@ export default function App() {
         {/* نوبت‌ها — همه نقش‌ها به‌جز نماینده */}
         <Route path="appointments" element={<RoleRoute roles={['admin', 'clinic', 'doctor', 'secretary']}><AppointmentsPage /></RoleRoute>} />
         <Route path="appointments/:uuid" element={<RoleRoute roles={['admin', 'clinic', 'doctor', 'secretary']}><AppointmentDetailPage /></RoleRoute>} />
+        <Route path="appointments/:uuid/edit" element={<RoleRoute roles={['admin', 'clinic', 'doctor', 'secretary']}><AppointmentEditPage /></RoleRoute>} />
 
         {/* فقط ادمین */}
         <Route path="users" element={<RoleRoute roles={['admin']}><UsersPage /></RoleRoute>} />