fix(members): use updated_at instead of non-existent completed_at on death_cases

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Modules/Members/Controllers/MemberController.php

@@ -292,7 +292,7 @@ class MemberController extends Controller
         if (!empty($member->transferred_from_death_id)) {
             $deathTransfer = $db->selectOne(
                 "SELECT dc.id, dc.member_id as deceased_member_id, m.full_name_ar as deceased_member_name,
-                        dc.completed_at as transfer_date
+                        dc.updated_at as transfer_date
                  FROM death_cases dc LEFT JOIN members m ON m.id = dc.member_id
                  WHERE dc.id = ?",
                 [(int) $member->transferred_from_death_id]