fix(web): time out API requests and flag line strips that failed to refresh [CI]

web/display/src/LineStrips.tsx

@@ -70,6 +70,7 @@ export function LineStrips({ lineId, range, m }: Props) {
       ) : <div className="line-mini-stack">
         <div className="line-mini-quic-head" title={`QUIC RTT p50 ${fmtMs(m['rtt.p50'])} · p95 ${fmtMs(m['rtt.p95'])} · p99 ${fmtMs(m['rtt.p99'])}`}>
           <span>QUIC</span><strong className="num">{fmtMs(m['rtt.p50'])}</strong><small>悬停看 p95 / p99</small>
+          {series.error ? <span className="line-mini-badge bad" title={`上一次取数失败：${series.error.message}`}>数据未更新</span> : null}
         </div>
         <div className="line-mini-direction">
           <div className="line-mini-direction-head" title={`去程 Probe → Agent 丢包 ${fmtPct(up)}`}>