[WIP] Fix PR card status refresh issue in Event Page

[Codex]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Event Page PR Card 状态刷新不及时</issue_title>
<issue_description>在 Event Page 中的 PR 卡片状态信息（如已过期）中看到的状态和进入详情页看到的不一样。初步认为原因是 Event Page 获取 PR 信息时没有触发 PR 状态的重新计算，应确保任何渠道获取PR数据时都会安排转台的重新计算。初步解决方案认为是在 PR service 层安排状态重新计算并禁止任何 controller / 其它 service 绕过 PR Service 直接访问 PR repo 的数据。</issue_description>

Comments on the Issue (you are @codex[agent] in this section)

• Fixes Event Page PR Card 状态刷新不及时 #38