fix: recover stuck update queue

web/src/main.tsx

@@ -771,7 +771,7 @@ function Update({ notify }: { notify: (message: string, kind?: Notice["kind"]) =
   const canApply = Boolean(info?.strategy === "systemd" && latest?.isNewer && latest.compatible && latest.integrityReady && !hasActiveJob && (!job || job.status === "failed" || job.version !== latest.version));
 
   return <div className="page update-page">
-    <div className="page-head"><div><div className="eyebrow">系统</div><h1>系统更新</h1></div><div className="head-actions"><Button onClick={() => void load()} disabled={loading || checking}><RotateCcw size={15} />刷新</Button><Button kind="primary" onClick={() => void check()} disabled={loading || checking || hasActiveJob}><RefreshCw size={15} className={checking ? "spin" : undefined} />检查更新</Button></div></div>
+    <div className="page-head"><div><div className="eyebrow">系统</div><h1>系统更新</h1></div><div className="head-actions"><Button onClick={() => void load()} disabled={loading || checking}><RotateCcw size={15} />刷新</Button><Button kind="primary" onClick={() => void check()} disabled={loading || checking}><RefreshCw size={15} className={checking ? "spin" : undefined} />检查更新</Button></div></div>
     {error && <div className="error banner" role="alert"><AlertCircle size={16} />{error}<button className="text-button" onClick={() => void load()}>重试</button></div>}
     {loading ? <div className="update-loading"><Loader2 className="spin" size={22} />正在读取版本信息</div> : info && <>
       <div className="update-overview">