Refactor doctor name handling across the application

- Removed the "دکتر" prefix from doctor names in various components and API responses to ensure consistency and clarity.
- Updated the AppointmentDetailPage, CommentsPage, DashboardPage, RatingsPage, SecretariesPage, and other relevant files to reflect the changes in doctor name formatting.
- Adjusted API documentation to align with the new naming conventions.
- Implemented validation to prevent the creation of clinics without a name and restricted users to a single clinic.
- Added tests to verify that doctor names are stored without titles and that clinic creation adheres to the new validation rules.

assets/admin/pages/AppointmentDetailPage.tsx

@@ -142,7 +142,7 @@ export default function AppointmentDetailPage() {
             <h3 className="font-semibold text-gray-800 mb-4">اطلاعات بیمار</h3>
             <InfoRow label="نام بیمار" value={appt.patient_name} />
             <InfoRow label="موبایل" value={<span dir="ltr">{appt.patient_mobile}</span>} />
-            <InfoRow label="پزشک" value={appt.doctor?.name ? `دکتر ${appt.doctor.name}` : null} />
+            <InfoRow label="پزشک" value={appt.doctor?.name ?? null} />
             <InfoRow label="تاریخ نوبت" value={formatDate(appt.slot_start)} />
             <InfoRow label="ساعت شروع" value={timeOf(appt.slot_start)} />
             <InfoRow label="ساعت پایان" value={timeOf(appt.slot_end)} />