kingwl
02e0756b78
Live-session feedback (a real Zed elicitation round-trip): the model presented its finished plan as a plain reply and asked the USER to switch modes — the exact reversal the roadmap warns about — because the shipped section's 'present it with the exit_plan_mode tool' read as a suggestion. The section now says a finished plan is delivered by calling exit_plan_mode, preferred over pasting it as a plain reply or asking the user to switch modes — firmer, without imperatives. ask_user_question enters the shipped plan allowlist (asking is read-only-safe), and the section points a blocked decision at it. The plan-acp-agent example composes the bash family (default mode only — plan's allowlist keeps excluding it, so the two modes now demo a real difference) plus tool-ask-user; both recorded scenarios re-recorded: the pin now shows plan = [ask_user_question, exit_plan_mode, read, todo_write] and post-exit default = the full eight-tool surface.
plan-acp-agent
The coding agent as an ACP server with session modes composed — the live composition of the plan-mode RFC.
What it demonstrates
session/new advertises the mode picker (default / plan); the editor's session/set_mode switches the session, applied at the next turn boundary. The default mode carries the full composition — bash, read/write/edit, todo_write, ask_user_question — while plan mode narrows it to the read-only allowlist (read, todo_write, ask_user_question, exit_plan_mode here — this tree loads no web tools) plus the plan-mode guidance section; every call outside the allowlist is denied at tools/pre-execute with a reason that steers it back to planning, and a blocking decision goes to the user through ask_user_question. The model leaves by presenting its plan through exit_plan_mode: the plan markdown renders as the tool's call card, the review question arrives as an elicitation form (approve / keep planning, free text welcome), and a keep-planning answer returns the feedback to the model verbatim.
Run
pnpm run demo:plan-acp # needs DEEPSEEK_API_KEY (repo-root .env works)
Drive it from Zed or any ACP client; the mode picker appears on the session. Switching back to default (or an approved exit_plan_mode) restores the full toolset on the next step.
Tests
pnpm run test:snapshot replays three scenarios keyless. modes-advertise (authored): the modes advertisement on session/new, both session/set_mode round-trips with their optimistic current_mode_update, and the loud rejection of an unknown mode id, as committed wire bytes. plan-mode (recorded, the header pin): the full arc — setMode(plan), the plan-shaped initial header, the plan presented via exit_plan_mode, a scripted elicitation approve, the boundary-flushed mode/set back and the widened fallback header, then a real edit under the restored toolset. plan-mode-reject (recorded): the keep-planning branch, whose corrective isError carries the reviewer's free-text feedback verbatim and leaves the session in plan mode. The gate's deny texts stay pinned at the unit tier (packages/mode/mode/tests).