feat: 新增看视频赚金币功能

- 在右侧导航新增「赚钱」入口（娱乐下方）
- 新增 earn-panel 弹窗：风格与商店一致，800px 宽度
- 集成 FluidPlayer + VAST 广告（ExoClick）
- 动态倒计时：实时监听视频 duration/currentTime
- VAST 失败时自动回退保底视频，20s 超时保底放行
- 修复 AbortError：idle 时 video 不预播放，仅提供 fallback source
- 删除不支持的 player.on('error') 调用
- 所有 overlay 改用绝对定位居中，修复 Alpine x-show 破坏 flex 问题
- EarnController：Redis 每日 10 次限额 + 冷却防刷
- 领取成功后广播全服系统消息（含金币+经验+快捷入口标签）
- 移除神秘盒子相关 UI 代码

resources/views/chat/frame.blade.php

@@ -15,6 +15,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>{{ $room->name ?? '聊天室' }} - 飘落流星</title>
     <meta name="csrf-token" content="{{ csrf_token() }}">
+    <meta http-equiv="Delegate-CH" content="Sec-CH-UA https://s.magsrv.com; Sec-CH-UA-Mobile https://s.magsrv.com; Sec-CH-UA-Arch https://s.magsrv.com; Sec-CH-UA-Model https://s.magsrv.com; Sec-CH-UA-Platform https://s.magsrv.com; Sec-CH-UA-Platform-Version https://s.magsrv.com; Sec-CH-UA-Bitness https://s.magsrv.com; Sec-CH-UA-Full-Version-List https://s.magsrv.com; Sec-CH-UA-Full-Version https://s.magsrv.com;">
     @php
         // 从 sysparam 读取权限等级配置
         $levelWarn = (int) \App\Models\Sysparam::getValue('level_warn', '5');
@@ -112,7 +113,8 @@
                 weddingSetupUrl: (id) => `/wedding/${id}/setup`,
                 claimEnvelopeUrl: (id, ceremonyId) => `/wedding/${id}/claim`,
                 envelopeStatusUrl: (id) => `/wedding/${id}/envelope-status`,
-            }
+            },
+            earnRewardUrl: "{{ route('earn.video_reward') }}"
         };
     </script>
     @vite(['resources/css/app.css', 'resources/js/app.js', 'resources/js/chat.js'])
@@ -194,6 +196,7 @@
     @include('chat.partials.games.fishing-panel')
     @include('chat.partials.games.game-hall')
     @include('chat.partials.games.gomoku-panel')
+    @include('chat.partials.games.earn-panel')
 
     {{-- 全屏特效系统：管理员烟花/下雨/雷电/下雪 --}}
     <script src="/js/effects/effect-sounds.js"></script>