fix: recover stuck update queue

web-next/src/pages/update/UpdatePage.tsx

@@ -109,7 +109,7 @@ export default function UpdatePage({ timezone = "Asia/Shanghai", notify }: { tim
   const progress = job ? ({ queued: 8, downloading: 28, verifying: 48, staged: 65, backing_up: 80, applying: 92 } as Partial<Record<JobStatus, number>>)[job.status] ?? 100 : 0;
   const notes = latest ? notesFor(latest) : null;
 
-  return <Page title="系统更新" subtitle="检查受信任的 Release；更新前会校验文件并保护现有数据。" actions={<Button variant="outline" onClick={() => void check()} disabled={checking || loading || hasActiveJob} icon={<RefreshCw size={15} />}>{checking ? "检查中…" : "检查更新"}</Button>}>
+  return <Page title="系统更新" subtitle="检查受信任的 Release；更新前会校验文件并保护现有数据。" actions={<Button variant="outline" onClick={() => void check()} disabled={checking || loading} icon={<RefreshCw size={15} />}>{checking ? "检查中…" : "检查更新"}</Button>}>
     {error && <ErrorBanner message={error} onRetry={() => void load()} />}{pollError && <ErrorBanner message={pollError} />}
     {loading ? <div className="tn-empty" role="status" aria-live="polite">正在读取版本信息…</div> : info && <>
       <div className="tn-update-grid"><Surface className="tn-update-block"><Server size={20} /><span className="tn-eyebrow">当前版本</span><strong className="tn-update-value">v{info.currentVersion}</strong><small>运行平台：{info.platform.target}</small></Surface><Surface className="tn-update-block"><ShieldCheck size={20} /><span className="tn-eyebrow">更新方式</span><strong>{info.strategy === "systemd" ? "后台一键更新" : "手动命令行更新"}</strong><small>{info.strategy === "systemd" ? (info.configured ? "由 systemd 更新服务执行" : "尚未配置发布源") : "当前安装未启用后台更新"}</small></Surface></div>