fix(appointments): stay on the same day after edit/create

AppointmentsPage now reads an optional ?date=YYYY-MM-DD query param as its
initial selected date. AppointmentEditPage and AppointmentCreatePage navigate
back to /admin/appointments?date=<the appointment's day> on save (and the edit
page's back link carries the date too), so the user returns to the day they
were viewing instead of today.

Test: AppointmentsPage honors ?date= and fetches that day.

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

assets/admin/pages/AppointmentCreatePage.tsx

@@ -116,7 +116,8 @@ export default function AppointmentCreatePage() {
     onSuccess: () => {
       qc.invalidateQueries({ queryKey: ['appointments'] });
       toast.success('نوبت با موفقیت ثبت شد');
-      navigate('/admin/appointments');
+      // به همان روزِ نوبت برگرد، نه امروز.
+      navigate(`/admin/appointments?date=${date}`);
     },
     onError: (e: any) => toast.error(e.message || 'خطا در ثبت نوبت'),
   });

assets/admin/pages/AppointmentEditPage.tsx

@@ -93,7 +93,8 @@ export default function AppointmentEditPage() {
     onSuccess: () => {
       qc.invalidateQueries({ queryKey: ['appointments'] });
       toast.success('نوبت به‌روزرسانی شد');
-      navigate('/admin/appointments');
+      // به همان روزِ نوبت برگرد، نه امروز.
+      navigate(`/admin/appointments?date=${date}`);
     },
     onError: (e: any) => toast.error(e.message || 'خطا در ذخیره اطلاعات'),
   });
@@ -111,7 +112,7 @@ export default function AppointmentEditPage() {
   return (
     <div className="fade-in" style={{ maxWidth: 860, margin: '0 auto' }}>
       <div style={{ display: 'flex', justifyContent: 'flex-end', marginBottom: 14 }}>
-        <Link to="/admin/appointments" className="btn sm ghost" style={{ color: 'var(--text-2)' }}>
+        <Link to={`/admin/appointments?date=${date}`} className="btn sm ghost" style={{ color: 'var(--text-2)' }}>
           <ChevronRightIcon style={{ width: 16 }} /> بازگشت
         </Link>
       </div>

assets/admin/pages/AppointmentsPage.test.tsx

@@ -39,6 +39,13 @@ describe('AppointmentsPage — طرح نوبت‌ها', () => {
     expect(await screen.findByText('این روز تعطیل است')).toBeInTheDocument();
   });
 
+  it('honors the ?date= query param (returns to the same day after edit)', async () => {
+    renderWithProviders(<AppointmentsPage />, { route: '/admin/appointments?date=2024-06-01' });
+    await screen.findByText('این روز تعطیل است');
+    const usedDate = get.mock.calls.some((c: any[]) => typeof c[0] === 'string' && c[0].includes('date=2024-06-01'));
+    expect(usedDate).toBe(true);
+  });
+
   it('independent doctor profile does NOT show doctor tabs', async () => {
     renderWithProviders(<AppointmentsPage />);
     await screen.findByText('این روز تعطیل است');

assets/admin/pages/AppointmentsPage.tsx

@@ -1,6 +1,6 @@
 import React, { useEffect, useRef, useState } from 'react';
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
-import { useNavigate } from 'react-router-dom';
+import { useNavigate, useSearchParams } from 'react-router-dom';
 import {
   PlusIcon, ChevronRightIcon, ChevronLeftIcon, CalendarDaysIcon,
   AdjustmentsHorizontalIcon,
@@ -200,8 +200,10 @@ export default function AppointmentsPage() {
   const isDoctor = primaryRole === 'doctor';
   const isRepresentation = primaryRole === 'representation';
 
+  const [params] = useSearchParams();
   const today = new Date().toISOString().slice(0, 10);
-  const [selectedDate, setSelectedDate] = useState(today);
+  // پس از ویرایش/ثبت، صفحه با ?date=... باز می‌شود تا همان روز نمایش داده شود.
+  const [selectedDate, setSelectedDate] = useState(params.get('date') || today);
   const [viewMode, setViewMode] = useState<TurnsViewMode>('timeline');
   const [selectedDoctorUuid, setSelectedDoctorUuid] = useState<string>(isDoctor && dbUuid ? dbUuid : '');
   const [bookingSlot, setBookingSlot] = useState<BookingSlot | null>(null);