feat: create season subdirectory when downloading season

下载合集时创建以合集标题命名的子目录：
- 前端 TaskInitData 增加 seasonTitle 字段
- 前端下载时传递合集 seasonTitle
- 后端 TaskInitOption 增加 SeasonTitle 字段
- 后端创建任务时根据 seasonTitle 创建子目录

Co-Authored-By: AI

internal/task/task.go

@@ -37,6 +37,7 @@ type TaskInitOption struct {
 	Video        string             `json:"video"`
 	Duration     int                `json:"duration"`
 	DownloadType string             `json:"downloadType"`
+	SeasonTitle  string             `json:"seasonTitle"` // 合集标题，用于创建子目录
 }
 
 // TaskInDB 任务数据库中的数据
@@ -164,6 +165,16 @@ func (task *Task) Start() {
 		return
 	}
 
+	// 如果有合集标题，创建子目录
+	if task.SeasonTitle != "" {
+		seasonFolder := filepath.Join(task.Folder, task.SeasonTitle)
+		if err := os.MkdirAll(seasonFolder, os.ModePerm); err != nil {
+			task.UpdateStatus(db, "error", fmt.Errorf("创建合集目录失败: %v", err))
+			return
+		}
+		task.Folder = seasonFolder
+	}
+
 	client := &bilibili.BiliClient{SESSDATA: sessdata}
 
 	GlobalDownloadSem.Acquire()

web/src/work/type.ts

@@ -245,6 +245,8 @@ export type TaskInitData = {
     video: string
     duration: number
     downloadType: 'audio' | 'video' | 'merge'
+    /** 合集标题，用于创建子目录 */
+    seasonTitle?: string
 }
 
 /** 任务数据库中的数据 */

web/src/work/view/parseModal.ts

@@ -143,6 +143,8 @@ export class ParseModalComp implements VanComponent {
                 : workRoute.videoInfoCardData.val.owner.name.trim()
             const activeVideoInfo = getActiveFormatVideo(info.info!, info.info!.accept_quality[info.formatIndex.val], this.preferredCodec.val)
             const pagesLength = workRoute.videoInfoCardData.val.pages.length
+            // 合集标题，用于创建子目录
+            const seasonTitle = workRoute.videoInfoCardMode.val == 'season' ? cardTitle.trim() : undefined
 
             return ({
                 bvid: info.page.bvid,
@@ -169,6 +171,7 @@ export class ParseModalComp implements VanComponent {
                 audio: getAudioURL(info.info!, this.preferHiResAudio.val),
                 duration: info.info!.dash.duration,
                 downloadType: this.downloadType.val,
+                seasonTitle,
                 ...activeVideoInfo
             })
         })).then(() => {