feat(layout): 默认展开所有有子菜单的菜单项

- 修改了 sidebar 的初始折叠状态，设置为关闭
- 在 Sidebar 组件中添加了递归获取所有有 children 的菜单项的逻辑
- 在折叠展开菜单时，自动展开所有有子菜单的菜单项

src/layout/components/Sidebar/index.vue

@@ -5,13 +5,15 @@
     <logo v-if="showLogo" :collapse="isCollapse" />
     <el-scrollbar wrap-class="scrollbar-wrapper">
       <el-menu
+        ref="menuRef"
         :collapse="isCollapse"
         :collapse-transition="false"
         :default-active="activeMenu"
-        :unique-opened="true"
         mode="vertical"
+        :default-openeds="allOpenKeys"
       >
         <sidebar-item
+          :index="route.path"
           v-for="(route, index) in sidebarRouters"
           :key="route.path + index"
           :base-path="route.path"
@@ -46,6 +48,28 @@ export default {
       }
       return path;
     },
+    allOpenKeys() {
+      // 递归收集所有有children的完整path
+      const keys = [];
+      function collectKeys(routes, basePath = '') {
+        routes.forEach(route => {
+          if (route.hidden) return;
+          let fullPath = '';
+          if (route.path.startsWith('/')) {
+            fullPath = route.path;
+          } else {
+            fullPath = basePath ? (basePath.endsWith('/') ? basePath + route.path : basePath + '/' + route.path) : route.path;
+          }
+          if (route.children && route.children.length > 0) {
+            if (fullPath) keys.push(fullPath);
+            collectKeys(route.children, fullPath);
+          }
+        });
+      }
+      collectKeys(this.sidebarRouters);
+      // 过滤空字符串和重复项
+      return Array.from(new Set(keys.filter(Boolean)));
+    },
     showLogo() {
       return this.$store.state.settings.sidebarLogo;
     },
@@ -59,6 +83,20 @@ export default {
       return process.env.VUE_APP_THEME_CLASS !=='theme-blue-white'?'#ffffff':'#000000';
     }
   },
+  watch: {
+    isCollapse(val) {
+      if (!val) {
+        // 展开所有有children的菜单
+        this.$nextTick(() => {
+          this.allOpenKeys.forEach(key => {
+            if (this.$refs.menuRef && this.$refs.menuRef.submenus && this.$refs.menuRef.submenus[key]) {
+              this.$refs.menuRef.open(key);
+            }
+          });
+        });
+      }
+    }
+  },
   methods: {
     toggleSideBar() {
       this.$store.dispatch('app/toggleSideBar')

src/store/modules/app.js

@@ -2,7 +2,7 @@ import Cookies from 'js-cookie'
 
 const state = {
   sidebar: {
-    opened: Cookies.get('sidebarStatus') ? !!+Cookies.get('sidebarStatus') : true,
+    opened: Cookies.get('sidebarStatus') ? !!+Cookies.get('sidebarStatus') : false,
     withoutAnimation: false
   },
   device: 'desktop',