feat: improve agent management and speed up tests

web/display/src/pages/Overview.tsx

@@ -146,7 +146,7 @@ export function Overview() {
   return (
     <main className="page">
       <section className="hero">
-        <h1>线路质量</h1>
+        <h1>MyMonitor</h1>
         <p className="sub">
           {data ? `${online} / ${cards.length} 台在线` : '加载中…'}
           <span className={`live-dot ${live ? 'on' : ''}`} title={live ? '实时更新中' : '实时连接中断，正在重连'} />