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deepseek-harness/packages/terminal/README.md
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terminal/ — persistent PTY capability family

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PTY stands for Pseudo-Terminal(伪终端). This capability provides persistent, owner-scoped terminal sessions for workflows that require state across tool calls or interactive stdin. PTY complements the one-shot bash and filesystem tools; it does not replace their stronger per-operation contracts.

Package Role ctx key
pty (@deepseek-ai/dsh-terminal) Backend registry, branded ids, exact-Agent ownership, session operations, and awaited cleanup ctx.terminals
terminal-bash (@deepseek-ai/dsh-terminal-bash) Shell backend over ctx.subprocess.spawnTerminal: readiness detection, bounded terminal state, sandbox policy, and session operations registers on ctx.terminals
tool-terminal (@deepseek-ai/dsh-tool-terminal) Six model-facing tools and generic task integration for background sends registers on ctx.tools

The design and deferred boundaries live in the persistent PTY Agent Note.

The subsystem reference — ids, backend/session contracts, send readiness, bounded reads — is docs/subsystems/terminal.md; design and deferred boundaries in the persistent PTY Agent Note.