Fix event-zekken-list API to use zekken_label instead of zekken_number for proper zekken value selection

rog/views_apis/api_admin_validation.py

@@ -332,9 +332,13 @@ def get_event_zekken_list(request):
             team_name = entry.team.team_name if entry.team else 'チーム名未設定'
             category_name = entry.category.category_name if entry.category else 'クラス未設定'
             
+            # zekken_labelが存在する場合はそれを使用、そうでなければzekken_numberを使用
+            zekken_value = entry.zekken_label if entry.zekken_label else str(entry.zekken_number)
+            zekken_label = f"{zekken_value} - {team_name}"
+            
             zekken_list.append({
-                'value': str(entry.zekken_number),
-                'label': f"{entry.zekken_number} - {team_name}",
+                'value': zekken_value,
+                'label': zekken_label,
                 'team_name': team_name,
                 'category': category_name
             })