feat(payment): add Jalali date formatting for appointment confirmation SMS

docs/api/payment.md

@@ -109,7 +109,7 @@ Initiate payment for an appointment. Returns a redirect URL to the payment gatew
 
 > **مبلغ نوبت:** مبلغِ پرداخت از کلید `appointment_fee_rials` تنظیمات سایت خوانده می‌شود (نه از client و نه hardcode). برای تغییر، در `/admin/settings` ویرایش کنید.
 >
-> **On successful callback** for an appointment payment, the booking is transitioned `pending → confirmed` (its 15-minute `expires_at` is cleared) and a confirmation SMS is dispatched to the patient's mobile. If the booking already lapsed to `expired` before payment confirmed, it is **not** re-confirmed (the transition is rejected) — handle refund out of band.
+> **On successful callback** for an appointment payment, the booking is transitioned `pending → confirmed` (its 15-minute `expires_at` is cleared) and a confirmation SMS is dispatched to the patient's mobile. تاریخِ نوبت در متن پیامک به‌صورت **شمسی** (`JalaliDateService::formatDateTime`، مثل `۱۴۰۵/۰۴/۰۲ ۰۹:۰۰`) درج می‌شود. If the booking already lapsed to `expired` before payment confirmed, it is **not** re-confirmed (the transition is rejected) — handle refund out of band.
 >
 > **پورسانت نماینده:** اگر پزشک نوبت `representation_id` داشته باشد و `appointment_commission_enabled=1` باشد، پس از confirm شدن `CommissionService` هزینه پنل پیامک و مالیات را کسر و سهم نماینده را به کیف‌پولش واریز می‌کند (ردیف `FinancialBreakdown` ثبت می‌شود). برای پرداخت اشتراک هم اگر `upgrade_commission_enabled=1` و پزشک/کلینیک `representation_id` داشته باشد همین منطق با درصد `upgrade_commission_percent` اعمال می‌شود. کلیدهای تنظیمات و ترتیب محاسبه در `docs/api/admin.md`.
 

src/Payment/Controller/PaymentController.php

@@ -51,6 +51,7 @@ class PaymentController extends BaseController
         private readonly ClinicRepository      $clinicRepo,
         private readonly SiteConfigRepository  $configRepo,
         private readonly \App\Settlement\Service\CommissionService $commissionService,
+        private readonly \App\Representation\Service\JalaliDateService $jalali,
         private readonly string                $appBaseUrl,
         private readonly string                $allowedFrontendHosts = '',
     ) {}
@@ -646,7 +647,7 @@ class PaymentController extends BaseController
 
         $mobile = $appointment->getPatientMobile();
         if ($mobile) {
-            $when = date('Y-m-d H:i', $appointment->getSlotStart());
+            $when = $this->jalali->formatDateTime($appointment->getSlotStart());
             $message = $this->smsText->resolve(\App\Sms\Entity\SmsLog::TAG_PAYMENT, [
                 'doctor' => $appointment->getDoctor()->getName(),
                 'date'   => $when,

src/Representation/Service/JalaliDateService.php

@@ -43,6 +43,21 @@ class JalaliDateService
         return [$jy, $jm, $jd];
     }
 
+    /** تبدیل timestamp به رشته‌ی شمسی: «۱۴۰۵/۰۴/۰۲ ۰۹:۰۰» (پیش‌فرض با ساعت). */
+    public function formatDateTime(int $timestamp, bool $withTime = true): string
+    {
+        $pattern = $withTime ? 'yyyy/MM/dd HH:mm' : 'yyyy/MM/dd';
+        $f = new \IntlDateFormatter(
+            'fa_IR@calendar=persian',
+            \IntlDateFormatter::NONE,
+            \IntlDateFormatter::NONE,
+            'Asia/Tehran',
+            \IntlDateFormatter::TRADITIONAL,
+            $pattern,
+        );
+        return $f->format($timestamp);
+    }
+
     public function jalaliYear(int $timestamp): int
     {
         return $this->gregorianToJalali(