Cron 表达式解析器

支持标准 5 段 Cron 的 *、列表、范围和步长，例如 */15 9-18 * * 1-5。结果按浏览器本地时区计算；不把 Quartz 6/7 段语法冒充成已支持。

1. 1
   11/6/2026, 9:00:00 AM

   2026-11-06T09:00:00.000Z
2. 2
   11/9/2026, 9:00:00 AM

   2026-11-09T09:00:00.000Z
3. 3
   11/10/2026, 9:00:00 AM

   2026-11-10T09:00:00.000Z
4. 4
   11/11/2026, 9:00:00 AM

   2026-11-11T09:00:00.000Z
5. 5
   11/12/2026, 9:00:00 AM

   2026-11-12T09:00:00.000Z
6. 6
   11/13/2026, 9:00:00 AM

   2026-11-13T09:00:00.000Z
7. 7
   11/16/2026, 9:00:00 AM

   2026-11-16T09:00:00.000Z
8. 8
   11/17/2026, 9:00:00 AM

   2026-11-17T09:00:00.000Z
9. 9
   11/18/2026, 9:00:00 AM

   2026-11-18T09:00:00.000Z
10. 10
    11/19/2026, 9:00:00 AM

    2026-11-19T09:00:00.000Z