The stack rebases onto a moved master through its base branch. Beyond mechanical unions (both branches' demo scripts, example rows, service roles, tool lists, acp deps, doc budgets — each side fit alone, the union needs the higher ceilings), three semantic reconciliations: - The ACP bridge now carries BOTH per-session surfaces: the sandbox stack's config options + approval answerer and this branch's session modes; session/new and session/load advertise modes AND configOptions side by side. - The feature matrix supersedes the sandbox stance per the RFC's second-lander rule: session/set_mode and current_mode_update flip to shipped-by-dsh-mode, config-option rows stay as #169 wrote them, and §6 records both landed features under the picker-to-modes / knobs-to-config-options division. - The snapshot pin grammar (#254: one header snapshot + declared deltas + a Markdown prompt golden) gains a symmetric declaration for what a delta cannot express: expectedHeaderSnapshots — a plan-mode flip resorts the canonical tool list, so its widening lands as a second full snapshot, now its own Markdown section. The pin-less-class and model-turn-only-pin amendments carry over; new fixtures cover the extended writer paths, and the plan-acp-agent scenarios re-recorded under the merged composition (the app now bundles the skill tool) with the suite's refresh mode wired through.
ui/ — editor/client integration surfaces
Integrations that expose the agent to an external editor or client. These are product packages: a real surface a user drives the harness through.
| Package | Role | ctx key |
|---|---|---|
acp/ |
Agent Client Protocol bridge: serves the agent to an ACP editor (Zed) over JSON-RPC stdio | (drives ctx.agents/ctx.sessions) |
user-approval/ |
One-shot user-approval mechanism, closed outcome vocabulary, audit events, and per-session approval policy | ctx.approval |
user-interaction/ |
Abstract human question/answer seam used by UI-backed confirmation tools | ctx.userInteraction |
tool-ask-user/ |
Model-facing ask_user_question tool over ctx.userInteraction |
(registers on ctx.tools) |
stdio-agent/ |
Terminal stdio chat APP: the agent-core spine + console logger + readline UI + a pre-created main agent, with a bin |
(composition + bin) |
acp-agent/ |
ACP server APP: the agent-core spine + JSONL persistence + the acp bridge (no stdout logger), with a bin |
(composition + bin) |
app-boot/ |
Shared boot glue for the two app bins: .env loading, fail-loud Loader guards, snapshot-aware config resolution, the settle-the-tree boot sequence |
(library for the bins) |
A UI integration is a client-driver plugin, not a loop change and not a capability seam: it consumes the existing agent/* event taxonomy and the dsh-agent factory. The readline UI is the unstructured analogue of the acp bridge and lives INSIDE the stdio app (the stdio-chat module of stdio-agent/): it is scaffolding for that one front door, not an independently swappable integration, so it carries no package boundary of its own.
user-approval, user-interaction, and tool-ask-user live here because asking a human is a UI-backed product affordance, not part of the providerless core spine. user-approval owns the one-shot ctx.approval decision mechanism and its policy tier; answerers remain with their UI channel owners. user-interaction remains provider-neutral (ctx.userInteraction), while tool-ask-user is its model-facing consumer and the app/bridge packages provide concrete providers.
stdio-agent and acp-agent are the two app packages: each composes the core/agent-core spine with its coupled front-door cluster (and owns the boot bin), so a leaf cordis.yml is the swappable backends plus one app entry plus any optional product tools. They live in ui/ because each IS a user-facing front door; the stdout-purity coupling (logger vs. no logger) becomes a property of the artifact rather than a leaf convention.