发布v2.0.0分支

frontend/src/layouts/views/BaseLayout.vue

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+<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></slot>
+
+    <!-- 返回顶部按钮 -->
+    <el-backtop target=".app-main">
+      <div class="i-svg:backtop w-6 h-6" />
+    </el-backtop>
+
+    <!-- 新增：悬浮的系统设置按钮 -->
+    <el-button
+      v-if="defaultSettings.showSettings"
+      class="floating-settings-button"
+      type="primary"
+      @click="handleSettingsClick"
+    >
+      <el-icon>
+        <Setting />
+      </el-icon>
+    </el-button>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useLayout } from "../composables/useLayout";
+import { useLayoutResponsive } from "../composables/useLayoutResponsive";
+import { defaultSettings } from "@/settings";
+import { useSettingsStore } from "@/store";
+
+const settingStore = useSettingsStore();
+
+/**
+ * 打开系统设置页面
+ */
+function handleSettingsClick() {
+  settingStore.settingsVisible = true;
+}
+
+// 布局相关
+const { layoutClass, isSidebarOpen, closeSidebar } = useLayout();
+
+// 响应式处理
+const { isMobile } = useLayoutResponsive();
+</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);
+  }
+
+  // 新增：悬浮按钮样式
+  .floating-settings-button {
+    position: fixed; // 固定在页面上
+    top: 50%; // 距离顶部20px
+    right: 0px; // 距离右侧8px
+    z-index: 999; // 层叠顺序
+    width: 40px;
+    height: 40px;
+    border-top-right-radius: 0; // 右侧顶部无圆角
+    border-bottom-right-radius: 0; // 右侧底部无圆角
+  }
+}
+</style>