重构: 连接切换链收敛与代码清理

- 切换连接统一switchConnection入口，删watcher与抑制机制
- 删除活跃服务器后回落本地并加载
- 侧边栏与指示器点击统一上抛，重复点击可刷新
- Wails事件解析归一，查重谓词抽公共
- 删空壳别名文件与过期文档截图

frontend/src/stores/update.ts

@@ -2,6 +2,7 @@ import { defineStore } from 'pinia'
 import { ref } from 'vue'
 import { Message } from '@arco-design/web-vue'
 import { formatBytes as formatFileSize } from '@/utils/fileUtils'
+import { parseWailsEventData } from '@/utils/wailsEvent'
 import {
   CheckUpdate, GetUpdateConfig, DownloadUpdate, InstallUpdate
 } from '../wailsjs/v3-bindings/u-desk/app'
@@ -35,14 +36,6 @@ export const useUpdateStore = defineStore('update', () => {
   const MIN_DISPLAY_TIME = 5000 // 5 秒最小显示时间
 
   // ==================== 工具函数 ====================
-  const parseEventData = (event: unknown) => {
-    try {
-      return typeof event === 'string' ? JSON.parse(event) : (event as Record<string, unknown>)
-    } catch {
-      return {}
-    }
-  }
-
   const formatSpeed = (bytesPerSecond: number): string => {
     return formatFileSize(bytesPerSecond) + '/s'
   }
@@ -167,7 +160,7 @@ export const useUpdateStore = defineStore('update', () => {
     }
 
     lastUpdateTime = now
-    const data = parseEventData(event)
+    const data = parseWailsEventData(event)
 
     progressInfo.value = {
       speed: (data.speed as number) || 0,
@@ -184,7 +177,7 @@ export const useUpdateStore = defineStore('update', () => {
    * 下载完成处理
    */
   const onDownloadComplete = (event: unknown) => {
-    const data = parseEventData(event)
+    const data = parseWailsEventData(event)
 
     // 错误处理
     if (data.error) {