feat: unify doctor title handling and enhance specialty selection

- Implemented a helper function `displayDoctorName` to prepend "دکتر" to doctor names for consistent display across the application.
- Updated various components (InviteDoctorModal, DashboardPage, DoctorDetailPage, DoctorsPage, etc.) to utilize the new helper for rendering doctor names.
- Modified the DoctorFormPage to automatically add the "دکتر" title in the UI without requiring user input.
- Fixed the EditSpecialtyPicker component to allow multiple specialty selections, resolving a UI bug where only one specialty could be selected at a time.
- Ensured that the backend strips the "دکتر" title from the name during pre-registration and doctor creation processes.
- Added tests for the new functionality, including checks for title handling and specialty selection logic.
- Updated API documentation to reflect changes in name handling and display logic.

src/Doctor/Entity/Doctor.php

@@ -8,6 +8,7 @@ use App\DoctorService\Entity\DoctorService;
 use App\Location\Entity\City;
 use App\Location\Entity\Province;
 use App\Shared\Util\DisplayName;
+use App\Shared\Util\PersianText;
 use App\Specialty\Entity\Specialty;
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
@@ -553,6 +554,8 @@ class Doctor
             'id'            => (string) $this->id,
             'uuid'          => $this->uuid,
             'name'          => $this->name,
+            // نامِ آمادهٔ نمایش با عنوان «دکتر»؛ name خام می‌ماند (برای فرم ویرایش).
+            'display_name'  => PersianText::withDoctorTitle($this->name),
             'gender'        => $this->gender,
             'degree'        => $this->degree,
             'img'           => $this->images ?? [],
@@ -582,6 +585,8 @@ class Doctor
             'id'                  => (string) $this->id,
             'uuid'                => $this->uuid,
             'name'                => $this->name,
+            // نامِ آمادهٔ نمایش با عنوان «دکتر»؛ name خام می‌ماند (برای فرم ویرایش).
+            'display_name'        => PersianText::withDoctorTitle($this->name),
             'gender'              => $this->gender,
             'experience'          => $this->getExperience(),
             'activity_time'       => $this->activityTime !== null ? (string) $this->activityTime : null,