fix(资源更新): 修复启动器更新弹窗卡死与重复弹出

[kawayiYokami]

为什么改

启动器启动时若 GitHub 网络慢，弹窗构造在主线程同步请求启动器版本信息（pygit2 list_heads），UI 卡死无响应；且弹窗处理完毕后待更新标记未清理，导致同一会话内反复弹窗。

改动要点

• 修复：UpdateService 增加启动器版本信息缓存，检查线程查询后写入，UI 构造下载项只读缓存，主线程不再发起网络请求
• 修复：资源更新检查每次启动只执行一次，弹窗处理完毕后清除待更新标记，不再重复弹窗
• 修复：OCR 下载等待期间抑制弹窗，避免任务已在队列时二次弹出

关联

承接 #2714（兼容修复已合入本分支）

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on base/target branches other than the default branch.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: c4f11b5f-dc5e-4941-bbe1-39947963c7c1

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}