Add KlingAiping usage-token settlement from upstream final_unit_deduction and duration fallback handling.

Normalize model endpoint config persistence and convert model pricing values between stored USD and display currency in the editor.

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

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

- 避免仅编辑展示价格时写入默认真实计费规则
- 将 video-extend 纳入 KlingAiping 原生渠道约束
- 补充相关保存决策、渠道约束和计费展示测试

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

- Asset: /api/v1/volcengine/asset → /api/v1/multimodal/sd/assets
- Create video task: /api/v1/videos → /api/v1/multimodal/sd/videos/contents/generations/tasks
- Query video task: /api/v1/videos/{id} → /api/v1/multimodal/sd/videos/contents/generations/tasks/{id}

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

- 新增 KlingAiping 渠道 (ChannelTypeKlingAiping = 59)
- 新增 KlingAiping 原生路由 (text2video/image2video/omni-video 等)
- 新增 KlingAiping adaptor (relay/channel/task/kling/aiping/)
- 前端模型定价页面新增「真实计费 / 展示价格」Tab 切换
- 新增 DisplayPricing 组件，支持模型展示价格的增删改
- 新增 displayPricingConfig 工具函数及测试
- 修复 KlingAiping 路由路径匹配与 task 错误响应

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

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

从 QuantumNous/new-api 上游移植以下修复：

- fix(ssrf): 加固视频代理和 MJ 图片代理的 SSRF 防护，FetchModels 提权至 RootAuth
- fix(claude): 流式断流时不再整份覆盖 usage，保留 cache 计费字段
- fix(pricing): 定价接口增加用户可用分组过滤
- fix(ratio): compact 模型优先匹配精确定价再回退通配符
- fix(ali): 接受 task polling 返回的字符串类型 usage 值
- fix(gemini): 从 URL 路径 :streamGenerateContent 检测流式请求
- fix(zhipu_4v): coding plan 图片生成使用正确的 OpenAI endpoint
- fix(openai): MessageImageUrl.Detail 字段添加 omitempty
- fix(channel-affinity): skip_retry_on_failure 配置项为 false 时不再丢失
- fix(document-renderer): 使用 useMemo 替代 useState 处理 HTML payload
- fix(fetch-setting): ApplyIPFilterForDomain 默认值改为 true

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