feat(access-logs): 重构访问日志为概览与明细双 Tab

新增访问日志概览 API 与前端页面：汇总请求量/访问量/带宽趋势与 Top 排行，
明细列表保留检索；排行榜改为紧凑列表样式。

frontend/lib/services/openflare/access-log.service.ts

@@ -8,6 +8,8 @@ import type {
   AccessLogIPTrend,
   AccessLogIPTrendFilters,
   AccessLogList,
+  AccessLogOverview,
+  AccessLogOverviewFilters,
   FoldedAccessLogFilters,
   FoldedAccessLogIPFilters,
   FoldedAccessLogIPList,
@@ -32,6 +34,12 @@ export class AccessLogService extends OpenFlareBaseService {
     return this.get<AccessLogList>('/', buildSearchParams(filters));
   }
 
+  static getOverview(
+    filters: AccessLogOverviewFilters = {},
+  ): Promise<AccessLogOverview> {
+    return this.get<AccessLogOverview>('/overview', buildSearchParams(filters));
+  }
+
   static listFolds(
     filters: FoldedAccessLogFilters,
   ): Promise<FoldedAccessLogList> {