terminal/

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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.