feat: 项目结构重构优化

src/layouts/BaseLayout.vue

@@ -0,0 +1,32 @@
+<template>
+  <div class="layout" :class="layoutClass">
+    <!-- 移动端遮罩层 -->
+    <div v-if="isMobile && isSidebarOpen" class="layout__overlay" @click="closeSidebar" />
+
+    <!-- 布局内容插槽 -->
+    <slot />
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useLayout } from "./useLayout";
+
+const { layoutClass, isSidebarOpen, isMobile, closeSidebar } = useLayout();
+</script>
+
+<style lang="scss" scoped>
+.layout {
+  width: 100%;
+  height: 100%;
+
+  &__overlay {
+    position: fixed;
+    top: 0;
+    left: 0;
+    z-index: 999;
+    width: 100%;
+    height: 100%;
+    background-color: rgba(0, 0, 0, 0.3);
+  }
+}
+</style>