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.

docs/api/doctor.md

@@ -24,7 +24,7 @@ Create a doctor profile for the authenticated user.
 ### Request Body (`application/json`)
 ```json
 {
-  "title": "دکتر علی احمدی",
+  "title": "علی احمدی",
   "gender": "male",
   "medical_system_code": "12345",
   "degree": "متخصص",
@@ -36,7 +36,7 @@ Create a doctor profile for the authenticated user.
 
 | Field | Type | Required | Description |
 |-------|------|----------|-------------|
-| `title` | string | ✅ | Full name with title |
+| `title` | string | ✅ | نام پزشک **بدون** عنوان. پیشوند «دکتر» سمت سرور با `PersianText::stripDoctorTitle()` حذف می‌شود؛ نمایش عنوان کار لایهٔ UI است. |
 | `gender` | string | ❌ | `"male"` or `"female"` |
 | `medical_system_code` | string | ❌ | Nظام پزشکی code |
 | `degree` | string | ❌ | Academic degree |
@@ -51,7 +51,7 @@ Create a doctor profile for the authenticated user.
   "success": true,
   "data": {
     "uuid": "550e8400-e29b-41d4-a716-446655440000",
-    "title": "دکتر علی احمدی",
+    "title": "علی احمدی",
     "gender": "male",
     "medical_system_code": "12345",
     "degree": "متخصص",
@@ -93,7 +93,7 @@ Get doctor detail with clinics.
   "data": {
     "data": {
       "uuid": "550e8400-...",
-      "name": "دکتر علی احمدی",
+      "name": "علی احمدی",
       "gender": "man",
       "medical_system_code": "12345",
       "degree": "specialist",
@@ -153,7 +153,7 @@ Get doctor detail for clinic owner — only doctors who are members of the authe
   "data": {
     "data": {
       "uuid": "...",
-      "title": "دکتر علی احمدی",
+      "title": "علی احمدی",
       "specialties": [...],
       "clinics": [{ "uuid": "...", "name": "کلینیک نور", "address": "...", "telephone": "..." }]
     }
@@ -219,7 +219,7 @@ List doctors with pagination and filters.
   "data": [
     {
       "uuid": "...",
-      "name": "دکتر علی احمدی",
+      "name": "علی احمدی",
       "gender": "man",
       "degree": "specialist",
       "img": [],