feat: 统一分页组件并添加批量删除功能

为多个页面组件添加统一的分页统计显示和批量删除功能
在日志管理页面添加批量删除接口和前端实现
优化表格分页配置，统一显示总条目数和分页选项

backend/src/services/log_service.rs

@@ -68,4 +68,14 @@ pub async fn list(db: &Db, p: ListParams) -> anyhow::Result<PageResp<LogInfo>> {
     let total = paginator.num_items().await? as u64;
     let models = paginator.fetch_page(if page>0 { page-1 } else { 0 }).await?;
     Ok(PageResp { items: models.into_iter().map(Into::into).collect(), total, page, page_size })
+}
+
+// 新增：批量删除系统请求日志
+pub async fn delete_many(db: &Db, ids: Vec<i64>) -> anyhow::Result<u64> {
+    if ids.is_empty() { return Ok(0); }
+    let res = request_log::Entity::delete_many()
+        .filter(request_log::Column::Id.is_in(ids))
+        .exec(db)
+        .await?;
+    Ok(res.rows_affected as u64)
 }