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/player/src/i18n/en-US.ts

@@ -8,11 +8,16 @@ export default {
     load_failed: 'Failed to load',
     retry: 'Retry',
     back_to_top: 'Back to top',
+    cancel: 'Cancel',
+    confirm: 'Confirm',
   },
   nav: { home: 'Home', bet: 'Bet', bet_history: 'History', wallet: 'Wallet', profile: 'Profile' },
   home: {
     hot_matches: 'Hot matches',
+    hot_tab: 'Hot',
+    upcoming_tab: 'Upcoming',
     no_matches: 'No matches',
+    upcoming_empty: 'No matches kicking off in the next 3 days',
     announcement_badge: 'Notice',
     announcement_default:
       'Welcome to TheBet365 · Football events are live · Bet responsibly',
@@ -21,6 +26,67 @@ export default {
     banner_slide: 'Slide {n}',
     banner_fallback: 'Banner',
   },
+  announcements: {
+    title: 'Announcements',
+    detail_title: 'Announcement',
+    empty: 'No announcements yet',
+    not_found: 'This announcement is unavailable',
+    view_all: 'View all announcements',
+    type_notice: 'Notice',
+    type_ticker: 'Ticker',
+    type_banner: 'Banner',
+    related_link: 'Related link',
+    go_link: 'Go to page',
+    open_link: 'Open link',
+    back: 'Back',
+  },
+  search: {
+    placeholder: 'Search teams or leagues',
+    no_results: 'No matches found',
+    results_count: '{count} matches found',
+    hint: 'Enter a team or league to filter on the Bet page',
+  },
+  deposit_notify: {
+    approved_title: 'Deposit approved',
+    rejected_title: 'Deposit rejected',
+    view_history: 'View deposit history',
+    view_messages: 'Open inbox',
+    dismiss: 'Dismiss',
+  },
+  messages: {
+    title: 'Inbox',
+    detail_title: 'Message',
+    empty: 'No messages yet',
+    not_found: 'Message not found',
+    view_all: 'Back to inbox',
+    back: 'Back',
+    mark_all_read: 'Mark all read',
+    load_more: 'Load more',
+    delete: 'Delete',
+    delete_all: 'Delete all',
+    delete_confirm: 'Delete this message?',
+    delete_all_confirm: 'Delete all messages? This cannot be undone.',
+    banner_promo_view: 'View promotion',
+    content_promo_view: 'View details',
+    status_unread: 'Unread',
+    status_read: 'Read',
+    deposit_approved_title: 'Deposit approved',
+    deposit_rejected_title: 'Deposit rejected',
+    deposit_approved_body: 'Order {orderNo} approved. Requested {amount}, credited {approvedAmount}.',
+    deposit_rejected_body: 'Order {orderNo} ({amount}) was rejected. {reason}',
+    reject_reason: 'Rejection reason',
+    no_reason: 'No reason provided',
+    view_recharge_history: 'View recharge history',
+    unread_badge: '{count} unread',
+    open_inbox: 'Open inbox',
+  },
+  inbox_hub: {
+    title: 'Messages & Support',
+    tab_messages: 'Inbox',
+    tab_support: 'Support',
+    open: 'Open messages and support',
+    open_support: 'Open support',
+  },
   history: {
     league_default: 'Football',
     stake: 'Stake',
@@ -396,6 +462,11 @@ export default {
     slip_currency: 'Amount',
     slip_min: 'Min',
     slip_min_error: 'Minimum stake is {amount}',
+    odds_changed: 'Odds have changed on some selections. Accept to continue.',
+    odds_suspended: 'Some selections are suspended or closed. Remove them to continue.',
+    accept_changes_place: 'Accept changes & place bet',
+    odds_was: 'Was',
+    odds_now: 'Now',
     place_success: 'Bet placed',
     place_failed: 'Bet failed',
   },