major update

lib/Repository/Scheduler/SchedulerRuntimeRepository.php

@@ -2,6 +2,7 @@
 
 namespace MintyPHP\Repository\Scheduler;
 
+use MintyPHP\Domain\Taxonomy\SchedulerRuntimeResult;
 use MintyPHP\DB;
 
 class SchedulerRuntimeRepository
@@ -13,10 +14,7 @@ class SchedulerRuntimeRepository
             $heartbeatAtUtc = gmdate('Y-m-d H:i:s');
         }
 
-        $result = trim($result);
-        if ($result === '') {
-            $result = 'ok';
-        }
+        $result = SchedulerRuntimeResult::normalizeOr($result, SchedulerRuntimeResult::Ok)->value;
         $errorCode = $this->nullableTrim($errorCode);
 
         $updated = DB::update(