feat(player/admin/api): 站内邮箱、在线状态、员工菜单权限与内容管理增强

API:
- 新增 player-messages 域：充值审核通过/拒绝、Banner/公告推广消息，支持多语言模板
- 新增 presence 域：Redis 心跳在线状态，管理端可查询在线玩家数
- User 表增加 visible_menus 字段；新增 player_messages 表及迁移
- 充值审核通过/拒绝时按系统配置自动写入玩家站内消息
- 管理端新增 GET /deposit-orders/pending-count、GET /presence/online-count
- 玩家端新增消息 CRUD、presence/ping、home 返回 inbox 开关配置
- 员工管理支持 visibleMenus 配置与删除保护（不能删自己/最后超管）
- SystemConfig 增加 inbox 功能开关及各类通知开关

Admin:
- 员工管理：按角色默认菜单 + 可勾选可见菜单项
- ManageLayout：按 visibleMenus 过滤侧栏；充值待审数量角标轮询
- Contents：富文本编辑器、图片字段组件重构
- DashboardPlayers：展示在线玩家数；AdminPlayerStatusCell 在线状态列
- 多页面 i18n 与权限细节调整

Player:
- 站内邮箱中心（InboxHub）：消息列表/详情、未读角标、一键已读/删除
- 公告列表与详情页；走马灯可跳转详情
- 客服 Modal 改为 Panel，与邮箱 Hub 整合
- 充值状态轮询通知；presence 心跳；BetSlip 清空二次确认
- HomeView 今日赛事板块；FootballView 等体验优化

Shared: 新增 CANNOT_DELETE_SELF、STAFF_NOT_FOUND、MESSAGE_NOT_FOUND 等错误码
Docs: 玩家端缺失功能分析文档
Chore: 移除 .agents/skills 设计类 skill 文件
Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/src/domains/presence/presence.service.spec.ts

@@ -0,0 +1,70 @@
+import { PresenceService } from './presence.service';
+
+describe('PresenceService', () => {
+  const pipeline = {
+    exists: jest.fn().mockReturnThis(),
+    exec: jest.fn(),
+  };
+
+  const redis = {
+    set: jest.fn(),
+    exists: jest.fn(),
+    raw: {
+      scan: jest.fn(),
+      pipeline: jest.fn(() => pipeline),
+    },
+  };
+
+  let service: PresenceService;
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+    service = new PresenceService(redis as never);
+  });
+
+  it('touches player key with 120s TTL', async () => {
+    await service.touch(42n);
+    expect(redis.set).toHaveBeenCalledWith('presence:player:42', '1', 120);
+  });
+
+  it('checks single player online status', async () => {
+    redis.exists.mockResolvedValue(true);
+    await expect(service.isOnline(7n)).resolves.toBe(true);
+    expect(redis.exists).toHaveBeenCalledWith('presence:player:7');
+  });
+
+  it('counts online keys via SCAN', async () => {
+    redis.raw.scan
+      .mockResolvedValueOnce(['1', ['presence:player:1', 'presence:player:2']])
+      .mockResolvedValueOnce(['0', ['presence:player:3']]);
+
+    await expect(service.getOnlineCount()).resolves.toBe(3);
+    expect(redis.raw.scan).toHaveBeenCalledWith(
+      '0',
+      'MATCH',
+      'presence:player:*',
+      'COUNT',
+      200,
+    );
+  });
+
+  it('filters online ids with pipeline exists', async () => {
+    pipeline.exec.mockResolvedValue([
+      [null, 1],
+      [null, 0],
+      [null, 1],
+    ]);
+
+    const result = await service.filterOnlineIds([10n, 20n, 30n]);
+    expect(result).toEqual(new Set(['10', '30']));
+    expect(pipeline.exists).toHaveBeenCalledTimes(3);
+    expect(pipeline.exists).toHaveBeenNthCalledWith(1, 'presence:player:10');
+    expect(pipeline.exists).toHaveBeenNthCalledWith(2, 'presence:player:20');
+    expect(pipeline.exists).toHaveBeenNthCalledWith(3, 'presence:player:30');
+  });
+
+  it('returns empty set when no ids provided', async () => {
+    await expect(service.filterOnlineIds([])).resolves.toEqual(new Set());
+    expect(redis.raw.pipeline).not.toHaveBeenCalled();
+  });
+});