用户凭据
dsh-credentials 的凭据 seam 把机密挡在配置之外：settings 分节与 cordis.yml 条目携带的是引用（环境变量名），值归 dsh-credentials-local 这类提供方所有，消费方每个操作解析一次引用——LLM（大语言模型）适配器每次模型请求解析一次，因此轮换后的凭据无需任何重启即可作用于紧随其后的下一次请求。一条 seam 级规则约束每个提供方：空的存储值在任何地方都视为不存在。
来源：packages/credentials/credentials/src/index.ts
标识
引用以 POSIX 风格环境变量名命名一条凭据。brand 防止调用方将凭据引用与在包或进程之间传递的其他字符串混用；构造时校验 shell 标识符语法。
/** Nominal reference to one credential: a POSIX-style environment-variable name. */
type CredentialRef = Branded<'CredentialRef'>解析
resolve(ref) 返回值及提供该值的来源层（由提供方定义）；未配置期间返回 undefined。消费方在每个操作中重新解析，绝不跨操作缓存——这种按操作进行的读取正是热更新机制。
/** One resolved credential value and the source layer that supplied it. */
interface ResolvedCredential {
/** The non-empty secret value. */
value: string
/** Provider-defined source layer id (the local provider uses `env`, `file`, `project-env`, and `user-env`). */
source: string
}描述
describe(ref) 在绝不暴露值的前提下回应配置界面：引用当前是否可解析、来自哪一层、set 当前能否成功。本地提供方把由当前进程环境供值的引用报告为 writable: false——那样的写入会表面成功而解析持续返回遮蔽值，因此 seam 直接拒绝，界面也得以提前把该引用渲染为只读。
/** Source and writability facts for one reference, safe for configuration UIs — never the value. */
interface CredentialInfo {
/** Whether {@link CredentialProvider.resolve} would currently return a value. */
configured: boolean
/** Source layer currently supplying the value; absent while unconfigured. */
source?: string
/** Whether {@link CredentialProvider.set} would currently succeed for this reference. */
writable: boolean
}已提交的变更
credentials/updated (ref) 在提供方管理的来源发生已提交变更后发出——set、unset 或在存储中观察到的外部编辑。进程环境自身的变化不可观测，永不发出事件。消费方不需要该事件（它们按操作重新解析）；它服务于配置界面刷新「已配置」徽标。
Cordis API
Generated from source by scripts/gen-cordis-catalog.ts (verified fresh by pnpm run verify-cordis-catalog in doc-sync; regenerate with pnpm run gen-cordis-catalog) — this section is byte-identical in both language sides of the page. Signature blocks use a ts cordis-catalog fence and keep the original source JSDoc; dispatch modes are defined in the primer, and the framework-inherited ctx API lives in cordis-api/inherited.md.
ctx.credentials — CredentialProvider (abstract seam)
Abstract credential service. Providers implement the four operations over their source layers; one seam-wide rule binds them all: an empty stored value is absent everywhere — resolve skips it, describe reports it unconfigured — so a blank never masquerades as a configured secret.
/**
* Resolve one reference to its current value. Resolution is per call:
* consumers re-resolve at each operation and must not cache across
* operations — that per-operation read is what makes a changed credential
* reach the next operation without a restart.
* @param ref - the reference to resolve.
* @returns the value and its source, or `undefined` while unconfigured.
*/
abstract resolve(ref: CredentialRef): Promise<ResolvedCredential | undefined>
/**
* Describe one reference for configuration surfaces without exposing the
* value.
* @param ref - the reference to describe.
* @returns configured state, supplying source, and writability.
*/
abstract describe(ref: CredentialRef): Promise<CredentialInfo>
/**
* Durably store one value in the provider-managed writable source. Rejects
* while a read-only source shadows the reference — the write would appear
* to succeed while resolution keeps returning the shadowing value — and
* rejects an empty value (use {@link unset}).
* @param ref - the reference to store.
* @param value - the non-empty secret value.
*/
abstract set(ref: CredentialRef, value: string): Promise<void>
/**
* Remove one reference from the provider-managed writable source; removing
* an absent reference is a no-op. Rejects while a read-only source shadows
* the reference, like {@link set}.
* @param ref - the reference to remove.
*/
abstract unset(ref: CredentialRef): Promise<void>Source: packages/credentials/credentials/src/index.ts:60
credentials/* events
credentials/updated — emit
Committed change to a provider-managed credential source: a set, an unset, or an external edit observed in storage. Ambient process-environment changes are not observable and never emit. Listener failures are contained and logged — a sync throw and an async rejection alike — without changing the committed operation's outcome, except INVARIANT-coded failures, which rethrow after every listener ran; that rethrow reaches the emitter only from synchronous listeners, so invariant checks on this event must not be async functions.
/**
* Committed change to a provider-managed credential source: a `set`, an
* `unset`, or an external edit observed in storage. Ambient
* process-environment changes are not observable and never emit. Listener
* failures are contained and logged — a sync throw and an async rejection
* alike — without changing the committed operation's outcome, except
* `INVARIANT`-coded failures, which rethrow after every listener ran;
* that rethrow reaches the emitter only from synchronous listeners, so
* invariant checks on this event must not be async functions.
* @param ref - the reference whose stored value changed.
* @mode emit
*/
'credentials/updated'(ref: CredentialRef): void