fix system update current version display

web/src/api/admin.ts

@@ -3,6 +3,7 @@ import type { AccessLog, Setting, User } from '../types'
 
 export interface SystemUpdateStatus {
   image: string
+  current_version?: string
   watchtower_image?: string
   update_mode?: string
   compose_dir?: string

web/src/pages/SystemUpdatePanel.tsx

@@ -139,7 +139,8 @@ export function SystemUpdatePanel() {
         </div>
       </div>
 
-      <div className="grid gap-3 md:grid-cols-2 xl:grid-cols-4">
+      <div className="grid gap-3 md:grid-cols-2 xl:grid-cols-5">
+        <UpdateFact label="当前版本" value={status?.current_version || 'dev'} mono />
         <UpdateFact icon={Server} label="更新方式" value={status?.update_mode === 'compose' ? 'Docker Compose' : '自定义命令'} />
         <UpdateFact label="Compose 目录" value={status?.compose_dir || '自动识别'} mono />
         <UpdateFact label="应用镜像" value={status?.image || '-'} mono />