llm/

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The LLM seam and its provider adapters. The llm package owns both the Service Definition and Consumer roles: the abstract service, content-block vocabulary, and stream-chunk assembler. Provider adapters register on ctx.llm. All product packages.

Package	Role	ctx key
llm/	LLM service and shared streaming vocabulary	ctx.llm
token-meter/	Replay-aware token measurement	ctx.tokenMeter
llm-retry/	Provider-scoped retry policy	listens to agent/request-error
llm-deepseek/	Direct DeepSeek adapter	registers on ctx.llm
llm-pi-ai/	Multi-provider pi-ai adapter	registers on ctx.llm

Adapters register provider routes on the seam; retry and token measurement remain separate consumers. The child READMEs own routing, metadata, replay, and provider-wire details; the LLM architecture decisions own the rationale.

The subsystem reference — messages and blocks, the model request, the StreamChunk protocol, the adapter contract — is docs/subsystems/llm-streaming.md (token measurement: token-meter.md); see the twin adapters, replay token meter, and routed model context Agent Notes.