feat: 易支付积分充值 + 站内公告 + OpenAI 视频修复 + grok/adobe 失败处理

充值/订单(易支付 mapi):
- 订单表 + 30 分钟自动取消;支付弹窗(二维码/跳转监控、倒计时、轮询、5s 倒计时关闭)
- 系统设置可配:开关/商户ID/密钥/支付地址(根地址拼 /mapi)/支付方式/最低额/积分比例(默认 1元=100积分)
- 异步通知 MD5 验签、幂等到账;用户累计充值;前台/后台订单页(筛选+搜索+分页,前后台分风格);用户管理累计充值列

站内公告:
- Markdown 公告,登录用户首次访问/刷新弹出;内容哈希做版本,改了就重新推;管理员不弹;空内容=下线

OpenAI 视频(/v1/videos)修复:
- /content 拿不到视频:grok 资源 URL 需鉴权,改为用生成账号 token 取流;adobe/runway 公开 URL 直代理(不存 RustFS)
- size→分辨率用短边判定(1280x720 = 720p,之前误判 1080p 被拒)

失败处理:
- grok 429「Too many requests」/403 anti-bot 改判临时错误(不再误封号),真额度耗尽才算 quota
- adobe 视频 408 / system under load 归为临时错误 → tempAsDead 封号

其它:
- 充值默认关闭;签到格子浅色可见;登录验证码按钮浅色可读;并发/账户信息展示
- 创作记录/画图台只显示画图台作品(排除 API);日志页 API 视频预览显示 —
- 视频去画中画/下载/投屏(全局);图片缩略图改背景图规避 Edge 视觉搜索
- 订单/兑换码/配置/日志菜单文案与图标;充值版块样式

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/layouts/AdminLayout.vue

@@ -14,12 +14,13 @@ const tabs = [
   { label: '账号管理', to: '/admin/accounts', icon: 'plug' },
   { label: '用户管理', to: '/admin/users',    icon: 'accounts' },
   { label: '并发分组', to: '/admin/concurrency', icon: 'shield' },
-  { label: '兑换码',   to: '/admin/cdks',     icon: 'spark' },
+  { label: '订单管理', to: '/admin/orders',   icon: 'receipt' },
+  { label: '兑换码管理', to: '/admin/cdks',   icon: 'spark' },
   { label: '邀请日志', to: '/admin/invites',  icon: 'accounts' },
   { label: '图片管理', to: '/admin/images',   icon: 'files' },
   { label: '首页内容', to: '/admin/showcase', icon: 'spark' },
-  { label: '日志',    to: '/admin/logs',     icon: 'log' },
-  { label: '配置',    to: '/admin/config',   icon: 'config' },
+  { label: '日志管理', to: '/admin/logs',     icon: 'log' },
+  { label: '系统配置', to: '/admin/config',   icon: 'config' },
 ]
 
 const currentLabel = computed(() => route.meta?.label || '')

frontend/src/layouts/PublicLayout.vue

@@ -19,6 +19,7 @@ const nav = computed(() => {
     items.push({ to: '/logs', label: '图片', icon: 'files' })
     items.push({ to: '/mylogs', label: '日志', icon: 'log' })
     items.push({ to: '/invite', label: '邀请', icon: 'accounts' })
+    items.push({ to: '/orders', label: '订单', icon: 'receipt' })
   }
   // 文档 + 关于 are public — visible to guests too.
   items.push({ to: '/docs', label: '文档', icon: 'log' })
@@ -87,7 +88,7 @@ const currentLabel = computed(() => {
         </button>
         <router-link to="/settings" title="设置" @click="onSettings"
                      :class="$route.path === '/settings' ? 'rail-bottom active' : 'rail-bottom'">
-          <Icon name="config" class="w-4 h-4" />
+          <Icon name="accounts" class="w-4 h-4" />
         </router-link>
       </div>
     </aside>