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/components/layout/Sidebar.test.tsx

@@ -0,0 +1,43 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { screen, fireEvent } from '@testing-library/react';
+import { renderWithProviders } from '../../test/utils';
+
+vi.mock('../../hooks/useSubscription', () => ({
+  useSubscription: () => ({ hasFeature: () => true }),
+}));
+
+import Sidebar from './Sidebar';
+import { useAuthStore } from '../../stores/authStore';
+
+describe('Sidebar — expandable نوبت‌ها menu', () => {
+  beforeEach(() => {
+    useAuthStore.setState({
+      primaryRole: 'admin', dbUuid: 'c1', userName: 'ادمین',
+      availableContexts: [], context: null,
+    } as any);
+  });
+
+  it('renders نوبت‌ها as a collapsible parent and reveals sub-items on click', () => {
+    renderWithProviders(<Sidebar />, { route: '/admin/dashboard' });
+
+    // منوی والد به شکل دکمه
+    const parent = screen.getByRole('button', { name: /نوبت‌ها/ });
+    expect(parent).toBeInTheDocument();
+
+    // در ابتدا (مسیر داشبورد) بسته است → زیرمنوها نیستند
+    expect(screen.queryByText('نوبت های تایید شده')).toBeNull();
+
+    fireEvent.click(parent);
+
+    // پس از باز شدن، دو زیرمنو دیده می‌شوند
+    expect(screen.getByText('نوبت های تایید شده')).toBeInTheDocument();
+    expect(screen.getByText('افزودن نوبت')).toBeInTheDocument();
+  });
+
+  it('auto-expands when a child route is active', () => {
+    renderWithProviders(<Sidebar />, { route: '/admin/appointments/new' });
+    // چون «افزودن نوبت» فعال است، منو باید خودکار باز باشد
+    expect(screen.getByText('افزودن نوبت')).toBeInTheDocument();
+    expect(screen.getByText('نوبت های تایید شده')).toBeInTheDocument();
+  });
+});