feat: redesign appointments (نوبت‌ها) admin UI to match tauri turns + expandable sidebar

Rebuild the /admin/appointments page visual layer to match the tauri
clinic-pro-tauri "turns" design while keeping all existing data wiring and
backend endpoints unchanged (add/edit/move/transfer-reserve/replace already
supported via PATCH /api/v1/appointment/{uuid} and POST /api/v1/my/appointment).

Frontend (assets/admin):
- Sidebar: نوبت‌ها becomes an expandable parent with sub-items
  «نوبت های تایید شده» (/admin/appointments) and «افزودن نوبت»
  (/admin/appointments/new); auto-expands on active child. Applied to
  admin/clinic/doctor/secretary roles. Adds nav-subitem styling.
- New presentational components under components/appointments/: tauri status
  palette (turnStatus), TurnsStatInfo, TurnsViewToggle (sliding), DoctorTabs
  (underline), TurnsTimeline (marker rail + status cards, empty slot → افزودن
  نوبت), TurnsTable.
- AppointmentsPage recomposed with the new components (stats bar, doctor tabs,
  view toggle, timeline/table), preserving queries, filters, pagination,
  quick-book modal and the row actions menu.
- AppointmentCreatePage: full-page create form (CreateTurn layout) at
  /admin/appointments/new, reusing POST /api/v1/my|admin/appointment.

Tests: TurnsStatInfo, TurnsTimeline, Sidebar (expandable), AppointmentsPage,
AppointmentCreatePage. Backend move/reserve/replace verified green via existing
tests/Appointment/AppointmentUpdateTest + AppointmentWorkflowFieldsTest.

No API endpoints changed → no docs/api change.

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

assets/admin/pages/AppointmentsPage.test.tsx

@@ -0,0 +1,41 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { screen } from '@testing-library/react';
+import { renderWithProviders } from '../test/utils';
+
+vi.mock('../lib/api', () => ({
+  api: { get: vi.fn(), post: vi.fn(), patch: vi.fn(), put: vi.fn(), delete: vi.fn() },
+  ApiError: class extends Error {},
+}));
+
+import { api } from '../lib/api';
+import { useAuthStore } from '../stores/authStore';
+import AppointmentsPage from './AppointmentsPage';
+
+const get = api.get as ReturnType<typeof vi.fn>;
+
+beforeEach(() => {
+  get.mockReset();
+  useAuthStore.setState({ primaryRole: 'doctor', dbUuid: 'doc1' } as any);
+  get.mockImplementation((url: string) => {
+    if (url.includes('today-stats')) return Promise.resolve({ success: true, data: { total: 7, completed: 3, waiting: 2, cancelled: 1 } });
+    if (url.includes('appointment-slots')) return Promise.resolve({ success: true, data: { sessions: [] } });
+    if (url.includes('/my/appointments')) return Promise.resolve({ success: true, data: [], meta: { totalRecords: 0, totalPages: 0, currentPage: 1 } });
+    return Promise.resolve({ success: true, data: [] });
+  });
+});
+
+describe('AppointmentsPage — طرح نوبت‌ها', () => {
+  it('renders the title, the stats bar and the افزودن نوبت action', async () => {
+    renderWithProviders(<AppointmentsPage />);
+    expect(screen.getByText('نوبت‌ ها')).toBeInTheDocument();
+    expect(screen.getByText('کل نوبت های امروز')).toBeInTheDocument();
+    expect(await screen.findByText('۷')).toBeInTheDocument(); // total from stats
+    expect(screen.getByText('افزودن نوبت')).toBeInTheDocument();
+  });
+
+  it('timeline view shows the holiday message when the doctor has no slots', async () => {
+    renderWithProviders(<AppointmentsPage />);
+    // نمای پیش‌فرض زمانبندی است و پزشک (نقش doctor) از قبل انتخاب شده
+    expect(await screen.findByText('این روز تعطیل است')).toBeInTheDocument();
+  });
+});