fix(sports): registration wizard resumes existing + marks player fee paid

Two fixes:
1. handleRegistrationFormPaid now also sets registration_fee_paid=1 on
   sa_players, so next time the system knows they already paid.
2. lookupPlayer checks for existing in-progress/completed registration
   and redirects to it instead of creating a duplicate. This means a
   returning player who already completed all steps goes back to step 4
   (their finished registration), not a new step 1.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Modules/SportsActivity/Controllers/RegistrationWizardController.php

@@ -82,6 +82,33 @@ class RegistrationWizardController extends Controller
             return $this->json(['success' => false, 'error' => 'أدخل رقم العضوية أو الرقم القومي أو الاسم']);
         }
 
+        $db = App::getInstance()->db();
+        $existingReg = null;
+        if ($nationalId !== '') {
+            $existingReg = $db->selectOne(
+                "SELECT r.id FROM sa_registrations r
+                 INNER JOIN sa_players p ON p.id = r.player_id
+                 WHERE p.national_id = ? AND r.status IN ('in_progress','completed','assessed') AND p.is_archived = 0
+                 ORDER BY r.id DESC LIMIT 1",
+                [$nationalId]
+            );
+        }
+        if (!$existingReg && $memberId > 0) {
+            $existingReg = $db->selectOne(
+                "SELECT r.id FROM sa_registrations r
+                 INNER JOIN sa_players p ON p.id = r.player_id
+                 WHERE p.member_id = ? AND r.status IN ('in_progress','completed','assessed') AND p.is_archived = 0
+                 ORDER BY r.id DESC LIMIT 1",
+                [$memberId]
+            );
+        }
+        if ($existingReg) {
+            return $this->json([
+                'success'  => true,
+                'redirect' => '/sa/registration/' . (int) $existingReg['id'],
+            ]);
+        }
+
         $result = RegistrationWizardService::startRegistration([
             'national_id'          => $nationalId,
             'player_type'          => $playerType,

app/Modules/SportsActivity/Services/SaEventListenerService.php

@@ -113,6 +113,17 @@ final class SaEventListenerService
             'form_payment_status' => SaConstants::PAYMENT_PAID,
             'updated_at'          => date('Y-m-d H:i:s'),
         ], 'id = ?', [$registrationId]);
+
+        $registration = $db->selectOne(
+            "SELECT player_id FROM sa_registrations WHERE id = ?",
+            [$registrationId]
+        );
+        if ($registration) {
+            $db->update('sa_players', [
+                'registration_fee_paid' => 1,
+                'updated_at'            => date('Y-m-d H:i:s'),
+            ], 'id = ?', [(int) $registration['player_id']]);
+        }
     }
 
     private static function handleRegistrationPaid(int $registrationId, int $paymentId): void