deepseek-harness/packages/compact

compact/ — compaction capability family

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A compaction capability family (see capability seams): an abstract interface, a summarizing backend, a model-free tool-result pruning companion, and a deferred model-facing consumer. All product packages.

Package	Role	ctx key
compact/	Abstract compaction seam (interface + compact/* events + CompactionResult)	ctx.compact
compact-basic/	A backend: ctx.tokenMeter pressure + token-budget retention + llm.stream() summarization	(registers ctx.compact)
compact-tool-result-prune/	Optional model-free head/middle/tail rewriting before summary compaction	ctx.toolResultPrune
tool-compact/ (deferred)	Model-facing /compact tool over ctx.compact	(registers on ctx.tools)

The interface lives at compact/compact/, the backend at compact/compact-basic/, and deterministic pruning at compact/compact-tool-result-prune/. Unlike the bash seam, the interface depends on dsh-session and dsh-llm because its verbs are defined over a Session and its output uses ContentBlock. That deviation is recorded in the compaction capability-seam Agent Note. Token measurement remains a reusable LLM-family service; a template- or model-backed compactor can replace compact-basic without changing the meter, pruner, or callers.