feat: 顶栏全宽+Logo移到顶栏+CSS Grid布局

组件修改:
- topMenu.js: el-header 左侧添加 logo (header-logo class)

CSS Grid 布局:
- 外层 el-container → grid(190px+1fr, 60px+1fr)
- 内层 el-container → display:contents
- top-menu的div包裹 → display:contents
- el-header: grid-column 1/-1 跨两列全宽第一行
- el-aside: 第一列第二行
- el-main: 第二列第二行

其他:
- 隐藏侧边栏原有 logo (.el-aside > a:first-child)
- menu-top margin-top: 86px → 12px

clientarea/hgcloud/components/topMenu/topMenu.js

@@ -75,6 +75,9 @@ const topMenu = {
 
   <el-header>
     <div class="header-left">
+      <a :href="commonData.clientarea_logo_url || '/home.htm'" onclick="return false" class="header-logo-link" @click="goHome">
+        <img class="header-logo" :src="logo" v-show="logo">
+      </a>
       <img src="${url}/img/common/menu.png" class="menu-img" @click="showMenu">
       <img v-if="isShowMore" src="${url}/img/common/search.png" class="left-img">
       <el-autocomplete v-if="isShowMore" v-model="topInput" :fetch-suggestions="querySearchAsync" placeholder="请输入内容"