docs(design): 删除磁盘监控设计文档并更新前端页面结构规范

- 删除 frontend/src/views/systemMonitor/2026-04-22-disk-monitor-design.md 设计文档
- 删除 frontend/src/views/tools/addLedger/API_DEBUG.md 调试文档
- 在 AGENTS.md 中新增前端页面结构归档章节，规范复杂工具页结构
- 明确 index.vue、components/、utils/ 职责边界和拆分原则
- 规定页面级类型和 contract 脚本管理方式
- 统一复杂页面拆分优先顺序和注意事项

frontend/src/layouts/components/Main/index.vue

@@ -5,8 +5,8 @@
         <router-view v-slot="{ Component, route }" style="height: 100%">
             <!-- {{ keepAliveName}} -->
             <!-- <transition  name="slide-right" mode="out-in"> -->
-            <keep-alive :include="tabsMenuList">
-                <component :is="Component" :key="route.fullPath" />
+            <keep-alive :include="keepAliveName">
+                <component v-if="isRouterShow" :is="Component" :key="route.fullPath" />
             </keep-alive>
             <!-- </transition> -->
         </router-view>
@@ -26,13 +26,14 @@ import Maximize from './components/Maximize.vue'
 import Tabs from '@/layouts/components/Tabs/index.vue'
 import Footer from '@/layouts/components/Footer/index.vue'
 import { useAuthStore } from '@/stores/modules/auth'
-import { useTabsStore } from '@/stores/modules/tabs'
 
-const tabStore = useTabsStore()
+defineOptions({
+    name: 'LayoutMain'
+})
+
 const globalStore = useGlobalStore()
-const tabsMenuList = computed(() => tabStore.tabsMenuList.map(item => item.name))
 const authStore = useAuthStore()
-const { maximize, isCollapse, layout, tabs, footer } = storeToRefs(globalStore)
+const { maximize, isCollapse, layout, tabs } = storeToRefs(globalStore)
 const keepAliveStore = useKeepAliveStore()
 const { keepAliveName } = storeToRefs(keepAliveStore)
 //是否显示导航栏