BAI-30: fix dashboard header layout

Co-authored-by: multica-agent <github@multica.ai>

web/admin.html

@@ -36,12 +36,12 @@
       </aside>
 
       <div class="workspace">
-        <header class="topbar">
+        <header class="topbar is-home-view" data-home-view="dashboard">
           <button class="icon-button menu-button" id="menuButton" aria-label="打开导航" aria-expanded="false" aria-controls="sidebar" title="打开导航"><svg><use href="icons.svg#menu"/></svg></button>
           <div class="workspace-name"><span>集团财务中心</span><strong id="currentViewName">管理总览</strong></div>
           <span class="demo-badge">演示数据</span>
           <div class="topbar-actions">
-            <label class="search-box"><svg><use href="icons.svg#search"/></svg><span class="sr-only">全局检索</span><input id="globalSearch" type="search" placeholder="检索公司、账号或流水" /></label>
+            <label class="search-box"><svg><use href="icons.svg#search"/></svg><span class="sr-only">全局检索</span><input class="global-search" id="globalSearch" type="search" placeholder="检索公司、账号或流水" /></label>
             <button class="period-button" type="button"><svg><use href="icons.svg#calendar"/></svg><span>截至 2026.07.31</span></button>
             <button class="icon-button" data-view-link="reminders" aria-label="提醒管理，4 项未处理" title="提醒管理"><svg><use href="icons.svg#bell"/></svg><i class="notification-dot">4</i></button>
           </div>
@@ -49,7 +49,15 @@
 
         <main id="main-content">
           <section class="app-view is-active" data-page="dashboard">
-            <header class="page-heading"><div><h1>管理总览</h1><p>集团账务口径与高优先级事项</p></div><button class="button secondary" data-view-link="settings"><svg><use href="icons.svg#settings"/></svg>账期设置</button></header>
+            <header class="dashboard-head">
+              <div class="dashboard-title"><h1>管理总览</h1><p>集团账务口径与高优先级事项</p></div>
+              <label class="search-box dashboard-search"><svg><use href="icons.svg#search"/></svg><span class="sr-only">全局检索</span><input class="global-search" type="search" placeholder="检索公司、账号或流水" /></label>
+              <div class="dashboard-tools">
+                <button class="icon-button" data-view-link="reminders" aria-label="提醒管理，4 项未处理" title="提醒管理"><svg><use href="icons.svg#bell"/></svg><i class="notification-dot">4</i></button>
+                <button class="period-button" type="button"><svg><use href="icons.svg#calendar"/></svg><span>截至 2026.07.31</span></button>
+                <button class="button secondary" data-view-link="settings"><svg><use href="icons.svg#settings"/></svg>账期设置</button>
+              </div>
+            </header>
 
             <section class="metric-grid" aria-label="总账关键指标">
               <article class="metric-card danger" data-metric-link="audit" tabindex="0" role="button" aria-label="查看 7 项待审核事项">