fix: complete logical clock wall-time isolation

hwe/sammo/DTO/VoteInfo.php

@@ -2,8 +2,41 @@
 
 namespace sammo\DTO;
 
+use sammo\GameClock;
+use sammo\Util;
+
 class VoteInfo extends \LDTO\DTO
 {
+  /**
+   * 기존 문자열만 가진 vote도 읽되, 저장 경계에서는 반드시 tick을 함께 둡니다.
+   *
+   * @return array<string,mixed>
+   */
+  public static function normalizeGameStorage(array $raw, GameClock $clock): array
+  {
+    if (!array_key_exists('startTick', $raw)) {
+      $raw['startTick'] = $clock->dateTimeToTick(new \DateTimeImmutable((string)$raw['startDate']));
+    }
+    if (!array_key_exists('endTick', $raw)) {
+      $raw['endTick'] = ($raw['endDate'] ?? null) === null
+        ? null
+        : $clock->dateTimeToTick(new \DateTimeImmutable((string)$raw['endDate']));
+    }
+
+    $raw['startTick'] = Util::toInt($raw['startTick']);
+    $raw['endTick'] = $raw['endTick'] === null ? null : Util::toInt($raw['endTick']);
+    $raw['startDate'] = $clock->formatTick($raw['startTick']);
+    $raw['endDate'] = $raw['endTick'] === null ? null : $clock->formatTick($raw['endTick']);
+    return $raw;
+  }
+
+  public static function fromGameStorage(array $raw, GameClock $clock): self
+  {
+    $raw = self::normalizeGameStorage($raw, $clock);
+    unset($raw['startTick'], $raw['endTick']);
+    return self::fromArray($raw);
+  }
+
   public function __construct(
     public int $id,
     public string $title,