[细粒度PR] 下载列表场景后台任务接线 - #2560
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marked this pull request as ready for review
April 30, 2026 11:34
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目标
在下载列表场景中接入后台任务体系，支持全选/范围删除、压缩导出、批量启动等操作。
变更
DownloadsScene.java：BackgroundTask、TaskExecutor、CompressSelectedGalleriesTask、DeleteFilesTask、DeleteRangeDownloadTask、StartAllDownloadTask、StartRangeDownloadTaskBackgroundTaskManager.submitBackgroundTask替换原有直接操作ProgressListener回调依赖