fix(sports): block completed players from re-entering registration wizard

Players who already completed the full registration (status=completed/assessed)
are now refused at the first lookup screen with an error message instead of
being redirected to their existing registration.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Modules/SportsActivity/Controllers/RegistrationWizardController.php

@@ -86,7 +86,7 @@ class RegistrationWizardController extends Controller
         $existingReg = null;
         if ($nationalId !== '') {
             $existingReg = $db->selectOne(
-                "SELECT r.id FROM sa_registrations r
+                "SELECT r.id, r.status FROM sa_registrations r
                  INNER JOIN sa_players p ON p.id = r.player_id
                  WHERE p.national_id = ? AND r.status IN ('in_progress','completed','assessed') AND p.is_archived = 0
                  ORDER BY r.id DESC LIMIT 1",
@@ -95,7 +95,7 @@ class RegistrationWizardController extends Controller
         }
         if (!$existingReg && $memberId > 0) {
             $existingReg = $db->selectOne(
-                "SELECT r.id FROM sa_registrations r
+                "SELECT r.id, r.status FROM sa_registrations r
                  INNER JOIN sa_players p ON p.id = r.player_id
                  WHERE p.member_id = ? AND r.status IN ('in_progress','completed','assessed') AND p.is_archived = 0
                  ORDER BY r.id DESC LIMIT 1",
@@ -103,6 +103,12 @@ class RegistrationWizardController extends Controller
             );
         }
         if ($existingReg) {
+            if (in_array($existingReg['status'], ['completed', 'assessed'], true)) {
+                return $this->json([
+                    'success' => false,
+                    'error'   => 'هذا اللاعب مسجل بالفعل وأكمل جميع الخطوات — لا يمكن التسجيل مرة أخرى',
+                ]);
+            }
             return $this->json([
                 'success'  => true,
                 'redirect' => '/sa/registration/' . (int) $existingReg['id'],