deepseek-harness/packages/subprocess

subprocess/ — subprocess capability family

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The shared home for spawning managed child-process trees: fully-specified spawn specs with Node-shaped per-stream stdio dispositions (raw pipes, inherit, bounded tail-keep collection with spill files), the one credential scrub every harness spawner uses, offset-based incremental reads, tree-scoped signalling with SIGTERM→grace→SIGKILL escalation, and the cooperative dispose ladder. Command defaulting, shell semantics, deadlines, protocol framing, and presentation stay with consumers — the bash executors, the LSP host, and the ACP subagent backend. See the subprocess seam Agent Note.

Package	ctx key	Role
subprocess (@deepseek-ai/dsh-subprocess)	ctx.subprocess	The seam: abstract SubprocessService.spawn(spec), the fully-explicit SubprocessSpawnSpec with per-stream stdio dispositions, SubprocessHandle (streams, offset-based readers, terminate/waitForExit/dispose), and the shared scrub + DSH_*/CollectedOutput vocabulary
subprocess-local (@deepseek-ai/dsh-subprocess-local)	—	The local implementation: detached process trees, per-disposition stream wiring, tail-keep truncation with bounded private spill files, the DSH_* merge order, tree signalling with escalation, the dispose ladder, and terminate-and-join disposal
subprocess-e2b (@deepseek-ai/dsh-subprocess-e2b)	—	Experimental E2B implementation: remote Linux process groups and spill state in the shared ctx.e2b sandbox, with asynchronous PID acquisition and SDK buffering limitations

The service owns process lifetime across consumer reloads; consumers own what a process means (a bash command, a future non-shell runner) and every default that shapes one.