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68 lines
2.6 KiB
Markdown
68 lines
2.6 KiB
Markdown
# 会话引用
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[English](session-reference.md) | 中文
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结构化的跨会话引用请求与预备消息上下文。[包（package）契约](../../packages/context/session-reference) 负责规范 URI、当前表层投影、标签安全的 JSON 与字节保留、稳定错误和不可信的模型提示词。宿主适配器使用这些类型，而不会把各自 UI 的提及语法传入 agent（智能体）核心。
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来源：[`packages/context/session-reference/src/types.ts`](../../packages/context/session-reference/src/types.ts)
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## 输入与候选项
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`SessionReferenceInput` 是与宿主无关的选择。id 具有权威性；label 是随快照携带的显示元数据。
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```ts type-equiv
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/** One source session selected by a host. */
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interface SessionReferenceInput {
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/** Opaque source session identity. */
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sessionId: SessionId
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/** Optional user-facing mention label. */
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label?: string
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}
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```
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`SessionReferenceCandidate` 是面向宿主的发现输出。存在最新会话标题时，它的 label 使用该标题；筛选仍只搜索 session id 和 cwd，绝不搜索 transcript（文本记录）。
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```ts type-equiv
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/** One host-facing candidate from exact session metadata. */
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interface SessionReferenceCandidate {
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/** Opaque source session identity. */
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sessionId: SessionId
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/** Latest log-backed title, falling back to the opaque session id. */
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label: string
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/** Source session working directory, when recorded. */
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cwd?: string
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/** Source session creation time in Unix epoch milliseconds. */
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createdAt: number
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}
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```
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## 预备消息
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预备过程保留可读的当前消息内容，并最多返回一个聚合上下文。
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```ts type-equiv
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/** Direct message content and optional referenced-session context. */
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interface PreparedReferencedMessage {
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/** Readable message content after host mention tokens are removed. */
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content: ContentBlock[]
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/** Aggregated untrusted snapshot, absent when the message has no references. */
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additionalContext?: UserMessage
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}
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```
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## 错误
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`SessionReferenceError.code` 区分无效配置或输入、自引用、数量限制、源读取失败、预算失败和取消。宿主协议会把这些 code 映射到各自的错误信封，无需检查提示词字节。
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```ts type-equiv
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/** Stable failure codes exposed to host adapters. */
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type SessionReferenceErrorCode =
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| 'SESSION_REFERENCE_INVALID_CONFIG'
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| 'SESSION_REFERENCE_INVALID_REFERENCE'
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| 'SESSION_REFERENCE_SELF_REFERENCE'
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| 'SESSION_REFERENCE_TOO_MANY'
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| 'SESSION_REFERENCE_READ_FAILED'
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| 'SESSION_REFERENCE_BUDGET_EXCEEDED'
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| 'SESSION_REFERENCE_CANCELLED'
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```
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