chore: v0.1.6 UI优化 - 两列网格布局、暗色适配、系统配置浮窗保存、退出登录统一到侧边栏

packages/frontend/src/pages/admin/SystemConfig.vue

@@ -497,7 +497,6 @@
       <el-button type="primary" size="large" :loading="saving" @click="handleSave">
         保存配置
       </el-button>
-      <el-button size="large" @click="handleLogout">退出登录</el-button>
     </div>
   </div>
 </template>
@@ -1097,16 +1096,6 @@ async function handleRemoveLogo() {
   background: #f0f0f0;
   object-fit: contain;
 }
-.save-bar {
-  position: sticky;
-  bottom: 0;
-  background: var(--bg-white);
-  padding: 16px 0;
-  border-top: 1px solid var(--border-color);
-  margin-top: 24px;
-  display: flex;
-  justify-content: flex-end; padding-right: 24px; gap: 12px;
-}
 
 /* ── 搜索策略 3列网格 ── */
 .strategy-grid {