Register a DoubaoVideo asset adapter that forwards the Ark-compatible
asset API (POST /api/v1/volcengine/asset?Action=xx) to the official
/openApi/portrait endpoint with a Volcengine V4 HMAC-SHA256 signature
(canonical request over content-type/host/x-content-sha256/x-date,
date/cn-beijing/ark/request scope). The AK/SK pair and optional
project code are stored in channel_asset_credentials (pool_id holds
the project code), so asset credentials stay separate from the video
Bearer key; the channel form now accepts them for type 54.

DoubaoVideo joins the seedance asset family so a user's asset upload
channel and video task channel stay the same (asset:// references
pass through to the upstream). Both resolution chains (asset proxy
resolver and video asset family matcher) now require the asset
credential to be configured before a type-54 channel can serve,
bind, or be auto-matched for assets, falling through to compatible
channels otherwise. The /api/v3 native-path whitelist simplifies
back to the family list now that 54 is a member.

Verified end-to-end against the real upstream: CreateAssetGroup,
CreateAsset (real video upload, Processing -> Active moderation),
ListAssets/GetAsset, and a video generation task referencing the
asset via asset://video reference (succeeded, 432900 tokens).

Co-Authored-By: ZCode <noreply@anthropic.com>

Co-Authored-By: Codex <noreply@anthropic.com>

Expose channel public_name in the edit modal and load a larger channel page when building model settings views.

Co-Authored-By: Codex <noreply@anthropic.com>

- Register Prometheus ChannelCollector in GetMetrics() sync.Once block
- Add MetricsMiddleware to /v1 and /v1beta relay router groups when metrics enabled
- Remove public_name field from channel creation form and validation
- Restore InvitationCard in topup page
- Extract fetchSearchPage helper in useModelsData to eliminate ~50 lines of duplication; fix setSearching with finally block; use Axios params for URL encoding; fix missing vendor_counts update during paginated search
- Fix vendor ordering in HomePricingFilters to follow vendorsMap sort_order; fix O(n²) Array.includes to use Set

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

- codex adaptor 支持 API key 和 OAuth 两种认证模式
- 提取 setupOAuthHeader 和 shouldUseChatCompletionsViaResponses
- 修复编辑页 codex_credential_mode 切换/回显不同步问题
- ResponsesStreamResponse 添加 Error 字段支持独立错误事件

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

为 Channel 模型新增 public_name 字段，让管理员可以为每个渠道
设置用户可见的友好名称（如"标准通道"、"高速通道"），替代前端
硬编码的"通道一/二/三"。Playground 通道选择器展示对外名称，
"渠道"统一改为"通道"。新建渠道时对外名称必填，编辑时可选。

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

支付宝支付：
- 后端：新增 topup_alipay.go、payment_alipay.go，实现当面付（扫码支付）下单、
  回调验签、订单状态查询完整流程，支持 RSA2 签名
- 前端：新增 QRCodePayModal 通用二维码支付弹窗（泛化微信支付弹窗）、
  SettingsPaymentGatewayAlipay 管理配置页面、充值流程接入支付宝
- 充值历史：管理员视图新增用户邮箱列，后端 fillTopUpEmails 批量填充

i18n 补全：
- 54 个缺失翻译 key 添加到全部 7 个 locale 文件（zh-CN/zh-TW/en/fr/ja/ru/vi）
- 涵盖渠道名称、仪表盘标签、兑换码状态、控制台时间筛选、Playground 错误消息、
  Dashboard 设置页面提示等
- 14 个源码文件中约 31 处 showError/showSuccess/showWarning 硬编码中文改用 t()
- ChannelsColumnDefs、helpers、services 中散落的硬编码中文统一国际化

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>