Reimplement deletes and marking files as broken

internal/dav/delete.go

@@ -29,14 +29,14 @@ func HandleDeleteFile(directory, torrentName, fileName string, torMgr *torrent.T
 		return fmt.Errorf("cannot find torrent %s", torrentName)
 	}
 	file, ok := torrent.SelectedFiles.Get(fileName)
-	if !ok {
+	if !ok || file.IsDeleted {
 		return fmt.Errorf("cannot find file %s", fileName)
 	}
 	dirCfg := torMgr.Config.(*config.ZurgConfigV1).GetDirectoryConfig(directory)
 	if dirCfg.OnlyShowTheBiggestFile {
 		torMgr.Delete(torrentName, true)
 	} else {
-		file.Link = "unselect"
+		file.IsDeleted = true
 		if torMgr.CheckDeletedStatus(torrent) {
 			torMgr.Delete(torrentName, true)
 		}