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deepseek-harness/packages/llm/README.zh.md
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# llm/LLM 能力家族
[English](README.md) | 中文
LLM seam 及其提供方适配器。接口包(`llm`)拥有抽象服务、内容块词汇和流分片组装器;适配器是在 `ctx.llm` 上注册的具体实现。这些全是**产品** 包。
| 包 | 职责 | ctx key |
|---|---|---|
| `llm/` | 抽象 LLM 服务 + 内容块词汇 + 分片组装器 | `ctx.llm` |
| `token-meter/` | 感知回放的请求与表层 token 测量 | `ctx.tokenMeter` |
| `llm-retry/` | 确切提供方的 normal 或无界请求重试策略 | (监听 `agent/request-error` |
| `llm-deepseek/` | DeepSeek API 适配器(直接 fetch + eventsource-parser SSE | (注册到 `ctx.llm` |
| `llm-pi-ai/` | 通过 `@earendil-works/pi-ai` 实现的多提供方适配器 | (注册到 `ctx.llm` |
接口位于 `llm/llm/`;适配器、重试策略和可复用的 token 计量器都是该分组下的扁平兄弟包。请求按 `provider` 路由,而 `model` 会原样传给选中的适配器。拥有路由的适配器提供重试策略,并解析可用的确切模型身份、上下文容量和推理元数据;重试执行器与 token 计量器仍与提供方无关。新的提供方适配器只需在 `ctx.llm` 上注册一个或多个提供方路由,无需改动消费方。两个已交付实现见[双生 LLM 适配器](../../.agents/notes/implemented/architecture/2026-06-13-twin-llm-adapters.md),测量归属见[回放 token 计量器 Agent Note](../../.agents/notes/implemented/architecture/2026-07-15-replay-token-meter-service.md),容量与压缩策略归属见[路由模型上下文 Agent Note](../../.agents/notes/implemented/architecture/2026-07-20-routed-model-context-and-compaction-policy.md)。