deepseek-harness/packages/plan

plan/ — plan collaboration state

Plan mode is one logged, per-agent collaboration state. It is a single product package, not a generic mode registry or a capability-seam trio.

Package	Role	ctx key
plan-mode/	plan/mode vocabulary + fold, boundary-applied state, the plan:policy guidance section, /plan [message] entry and /plan off exit, and the model-facing exit_plan_mode review tool	ctx.planMode

The active state is a pure function of the session log, so resume and fork restore it without extra machinery. The deployment supplies plan instructions through Cordis config, while exit_plan_mode stays registered when planning is inactive to keep the request tool catalog stable. ACP maps this capability onto its generic default / plan picker; sandbox mode and approval policy remain independent enforcement settings. Design: plan-mode Agent Note and plan-specific state simplification.