feat(account-events): 账号详情页与账号事件历史全链路支持

1. 新增账号事件数据表 AccountEvent 与迁移版本 20261002_0040_account_events，支持审计 Cookie 变更、自动重登、健康检查及任务执行事件；
2. 后端新增 account_events_service 并扩展 /api/accounts 路由，支持事件查询、过滤与上报；
3. 前端新增 AccountDetailPage 账号详情页组件，支持账号元信息展示、事件历史瀑布流与快捷重登操作；
4. 修复 CK 重登与自动化定时任务中事件关联逻辑，补充 test_account_events 单元测试；
5. 新增生产服务器高负载排查分析报告及相关设计文档。

web/frontend/src/api/accounts.ts

@@ -1,8 +1,10 @@
 import api from './client';
 import type {
+  AccountEventPage,
   AccountItem,
   AccountBulkSelection,
   AccountBulkTagRequest,
+  AccountOverview,
   AssignmentsSummary,
   BasicSummary,
   MessageCountResponse,
@@ -38,4 +40,11 @@ export const accountApi = {
     api.delete<MessageDeletedResponse, MessageDeletedResponse>('/accounts/batch/delete', { params: { account_ids: account_ids.join(',') } }),
   batchDeleteSelection: (data: AccountBulkSelection) =>
     api.post<MessageDeletedResponse, MessageDeletedResponse>('/accounts/batch-delete', data),
+  // 详情页：状态卡 + 统计
+  overview: (id: number) => api.get<AccountOverview, AccountOverview>(`/accounts/${id}/overview`),
+  // 时间线（倒序分页），event_type 为空表示全部
+  events: (id: number, params: { page?: number; page_size?: number; event_type?: string }) =>
+    api.get<AccountEventPage, AccountEventPage>(`/accounts/${id}/events`, {
+      params: { page: 1, page_size: 50, ...params, event_type: params.event_type || '' },
+    }),
 };

web/frontend/src/api/types.ts

@@ -71,6 +71,82 @@ export interface BasicSummary {
   tag_count?: number;
 }
 
+// ==================== 账号详情与事件历史 ====================
+
+/** 事件类型（与后端 account_events_service 的常量保持一致）。 */
+export type AccountEventType =
+  | 'imported'
+  | 'login_ok'
+  | 'ck_invalid'
+  | 'relogin_ok'
+  | 'relogin_failed'
+  | 'bind_ok'
+  | 'recharge'
+  | 'exchange'
+  | 'points_credit'
+  | 'elite_opened'
+  | 'esports_opened'
+  | 'assigned'
+  | 'tag_changed';
+
+export interface AccountEventItem {
+  id: number;
+  event_type: AccountEventType | string;
+  occurred_at: string;
+  title: string;
+  /** 有符号：充值为正、兑换消耗为负 */
+  amount: number | null;
+  balance_after: number | null;
+  detail: Record<string, unknown> | null;
+  source: string;
+}
+
+export interface AccountEventPage {
+  items: AccountEventItem[];
+  total: number;
+  page: number;
+  page_size: number;
+}
+
+export interface AccountOverviewStats {
+  recharge_total: number;
+  exchange_count: number;
+  points_spent: number;
+  ck_invalid_count: number;
+  event_count: number;
+  login_count: number;
+  last_login_at: string | null;
+  last_ck_check_at: string | null;
+}
+
+export interface AccountOverview {
+  id: number;
+  username: string;
+  nickname: string;
+  uid: string;
+  tag: string;
+  remark: string;
+  assigned_to: number | null;
+  /** 导入时间 */
+  created_at: string | null;
+  points: number | null;
+  gold_balance: number | null;
+  exchange_balance: number | null;
+  game_name: string;
+  game_channel: string;
+  bind_status: string;
+  elite_opened: boolean | null;
+  elite_expire_time: number | null;
+  esports_points: number | null;
+  esports_bind_status: string;
+  esports_game_name: string;
+  esports_can_change_time: number | null;
+  auto_managed: boolean;
+  stats: AccountOverviewStats;
+  /** 开通时间来自事件表（上线后才开始记录，更早的不显示） */
+  opened_at: { elite: string | null; esports: string | null };
+}
+
 export interface TaskSummary {
   total: number;
   success: number;