ApiSuccessI18n returns a translated success message based on the user's language preference

Capabilities returns the full resource/action matrix the subject is allowed.

DecodeLocalTaskID decodes a base64-encoded upstream operation name.

DecrementDiskFiles 减少磁盘文件计数

DoWorkerRequest 通过Worker发送请求

GetBodyStorage 获取请求体存储对象（用于需要多次读取的场景）

GetCheckinSetting 获取签到配置

GetClaudeSettings 获取Claude配置

GetCustomOAuthProviderById returns a custom OAuth provider by ID

GetDiskCacheThresholdBytes 获取磁盘缓存阈值（字节）

GetImageFromUrl 获取图片的类型和base64编码的数据

GetOpenAIError 从动态错误类型中提取OpenAIError结构

GetOpenAIError 从动态错误类型中提取OpenAIError结构

GetUserAutoGroup 根据用户分组获取自动分组设置

GetUserSetting gets setting from Redis first, falls back to DB if needed

IncrementDiskFiles 增加磁盘文件计数

InjectTieredBillingInfo overlays tiered billing fields onto an existing module-specific other map. Call this after GenerateTextOtherInfo / GenerateCla

IsDiskCacheEnabled 是否启用磁盘缓存

LoadFromDB 从数据库加载配置

NewSystemTaskProgressReporter returns a throttled progress callback bound to a running task. Handlers call it with (processed, total) as they iterate

ObserveChannelAffinityUsageCacheByRelayFormat records usage cache stats with a stable rate mode derived from relay format.

PreConsumeBilling 根据用户计费偏好创建 BillingSession 并执行预扣费。 会话存储在 relayInfo.Billing 上，供后续 Settle / Refund 使用。

QuotaRoundChecked is QuotaRound but also returns a non-nil *QuotaClamp when the value was clamped, so billing callers can audit it.

Register registers an OAuth provider with the given name

Request parameter duration's unit is seconds

SaveToDB 将配置保存到数据库

set index

--------------------------------------------------------------------------- SettleBilling — 后结算辅助函数 --------------------------------------------------

ShouldCopyUpstreamHeader checks whether a given upstream response header should be copied to the client response. It returns false for Content-Length