抛弃轮询，使用websocket获取任务进度;部分优化;去除残留的条件判断;修复去除临时本子时加载不存在的预览图(同步更新)写死图片宽度;

src/components/Side.vue

@@ -35,9 +35,9 @@
         <el-table-column label="操作" width="300vw">
           <template #default="scoped">
             <span>
-              <el-button @click="downloadTask(scoped.row.download)" :disabled="scoped.row.status !== '下载完成' || scoped.row.mode === 2">下载</el-button>
+              <el-button @click="downloadTask(scoped.row.download)" :disabled="scoped.row.status !== '下载完成'">下载</el-button>
               <el-button @click="changeGalleryCollect(scoped.row.gid, scoped.row.isCollect)">{{scoped.row.isCollect ? '取消收藏' : '收藏'}}</el-button>
-              <el-button @click="readOnlineGallery(scoped.row)" :disabled="scoped.row.status !== '下载完成' || scoped.row.mode === 1">在线看</el-button>
+              <el-button @click="readOnlineGallery(scoped.row)">在线看</el-button>
             </span>
           </template>
         </el-table-column>
@@ -102,8 +102,6 @@ import axios from "axios";
 import {ElMessage} from "element-plus";
 import OnlineReader from "./OnlineReader.vue";
 
-let GalleryManagePrefix = "https://downloader.lionwebsite.xyz/GalleryManage/"
-
 //输入
 let inputNode = ref(null)
 //是否正在编辑页数