feat: 为多个组件添加边框样式

src/@core/components/ThemeSwitcher.vue

@@ -195,7 +195,7 @@ onMounted(() => {
         <VIcon :icon="getThemeIcon" />
       </IconBtn>
     </template>
-    <VList class="theme-switcher-list pt-0">
+    <VList class="theme-switcher-list pt-0 border">
       <VCardItem class="theme-switcher-header">
         <VCardTitle class="font-weight-medium text-primary">主题选择</VCardTitle>
       </VCardItem>

src/layouts/components/Footer.vue

@@ -61,7 +61,7 @@ const currentPath = computed(() => route.path)
           :color="moreActiveState ? 'primary' : ''"
         />
         <VMenu v-model="moreMenuDialog" close-on-content-click activator="parent">
-          <VList class="font-bold" lines="one" elevation="1">
+          <VList class="font-bold border" lines="one">
             <VListSubheader class="bg-transparent"> 更多 </VListSubheader>
             <VListItem
               class="pe-20 ps-5"

src/layouts/components/ShortcutBar.vue

@@ -121,7 +121,7 @@ onMounted(() => {
       </IconBtn>
     </template>
     <!-- Menu Content -->
-    <VCard class="shortcut-menu-card">
+    <VCard class="shortcut-menu-card border">
       <VCardItem class="shortcut-header border-b">
         <VCardTitle class="font-weight-medium text-primary">捷径</VCardTitle>
         <template #append>

src/layouts/components/UserNotification.vue

@@ -54,7 +54,7 @@ onBeforeUnmount(() => {
       </IconBtn>
     </template>
     <!-- Menu Content -->
-    <VCard>
+    <VCard class="border">
       <VCardItem class="notification-header">
         <VCardTitle class="font-weight-medium text-primary">通知中心</VCardTitle>
         <template #append>

src/layouts/components/UserProfile.vue

@@ -86,7 +86,7 @@ const userLevel = computed(() => userStore.level)
     <VImg :src="avatar" />
 
     <VMenu activator="parent" width="230" location="bottom end" offset="14px" class="user-menu">
-      <VList class="overflow-hidden pt-0">
+      <VList class="overflow-hidden pt-0 border">
         <!-- 👉 User Avatar & Name -->
         <div class="user-profile-header px-2 py-4 mb-2">
           <div class="d-flex align-center">