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/secretary.md

@@ -160,7 +160,7 @@ Create a secretary for a doctor.
     "uuid": "sec-uuid-...",
     "user_name": "علی محمدی",
     "mobile_number": "09123456789",
-    "doctor_name": "دکتر احمد رضایی",
+    "doctor_name": "احمد رضایی",
     "doctor_uuid": "...",
     "owner_type": "doctor",
     "clinic_uuid": null,
@@ -215,7 +215,7 @@ Get secretary detail.
     "mobile_number": "09123456789",
     "active": true,
     "permissions": { ... },
-    "doctor": { "uuid": "...", "title": "دکتر علی احمدی" },
+    "doctor": { "uuid": "...", "title": "علی احمدی" },
     "created_at": 1717000000
   }
 }
@@ -325,7 +325,7 @@ Get all secretaries for a specific doctor.
       "uuid": "...",
       "user_name": "علی محمدی",
       "mobile_number": "09...",
-      "doctor_name": "دکتر احمد رضایی",
+      "doctor_name": "احمد رضایی",
       "doctor_uuid": "...",
       "is_active": true,
       "permissions": { ... },
@@ -368,7 +368,7 @@ Get all secretaries across **all doctors** of a clinic.
       "secretary_uuid": "...",
       "user_name": "علی محمدی",
       "mobile_number": "09...",
-      "doctor_name": "دکتر احمد رضایی",
+      "doctor_name": "احمد رضایی",
       "doctor_uuid": "...",
       "is_active": true,
       "permissions": { ... },