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/index.ts

@@ -254,6 +254,7 @@ export type {
   OriginItem,
   OriginDetail,
   AccessLogList,
+  AccessLogOverview,
   OptionItem,
   GeoIPLookupResult,
   DatabaseCleanupResult,

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> {

frontend/lib/services/openflare/index.ts

@@ -89,6 +89,9 @@ export type {
   AccessLogIPTrendFilters,
   AccessLogItem,
   AccessLogList,
+  AccessLogOverview,
+  AccessLogOverviewFilters,
+  AccessLogOverviewMetricPoint,
   FoldedAccessLogFilters,
   FoldedAccessLogIPFilters,
   FoldedAccessLogIPList,

frontend/lib/services/openflare/types.ts

@@ -500,6 +500,35 @@ export interface AccessLogFilters {
   sort_order?: 'asc' | 'desc';
 }
 
+export interface AccessLogOverviewFilters {
+  node_id?: string;
+  host?: string;
+  hours?: number;
+}
+
+export interface AccessLogOverviewMetricPoint {
+  bucket_started_at: string;
+  value: number;
+}
+
+export interface AccessLogOverview {
+  generated_at: string;
+  hours: number;
+  summary: {
+    total_requests: number;
+    total_visits: number;
+    bandwidth_served: number;
+  };
+  trends: {
+    requests: AccessLogOverviewMetricPoint[];
+    visits: AccessLogOverviewMetricPoint[];
+    bandwidth: AccessLogOverviewMetricPoint[];
+  };
+  top_paths: DistributionItem[];
+  top_hosts: DistributionItem[];
+  top_ips: DistributionItem[];
+}
+
 export interface AccessLogItem {
   id: string;
   node_id: string;