Tianyi Cui
32aaa8983e
# Conflicts: # docs/development.i18n.yaml # packages/client/ui-conversation/src/client/chat/MessageItem.tsx # packages/client/ui-primitives/src/markdown/CodeBlock.tsx # scripts/snapshots/translation-prompt-v4/request-response.expected.json
workflow/ — dynamic-workflow capability family
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The workflow seam: a model-written JavaScript orchestration script that fans out subagents at scale (phases, structured per-agent results, concurrency caps), modeled on Claude Code's dynamic workflows. A capability seam (see capability seams) in the bash shape: ONE engine implementation per context registers as ctx.workflows; the model-facing tool consumes it.
| Package | Role | ctx key |
|---|---|---|
workflow/ |
Abstract workflow seam: service base class + run vocabulary + workflow/* events |
ctx.workflows |
workflow-workerthread/ |
node:worker_threads engine: one worker per run; the script's vm context lives inside the worker, agent() bridges to ctx.subagents over the message port |
(provides ctx.workflows) |
tool-workflow/ |
Model-facing workflow tool over ctx.workflows |
(registers on ctx.tools) |
tool-ralph/ |
Fixed fresh-agent Ralph policy over ctx.workflows and a fresh structured-output subagent provider |
(registers on ctx.tools) |
The interface lives at workflow/workflow/. The engine's agent() hook rides the subagent seam (any registered provider; the shipped examples use spawn), and agent({ schema }) rides the structured-output support the in-process backends implement. The worker thread isolates the SCRIPT — the host never blocks on it, and a cancelled run's post-grace termination is real — but it is NOT a security boundary; an isolated-vm/separate-process engine (actual sandboxing) swaps in behind the same interface if that ever matters.
The general script engine's decisions and deferred work live in the dynamic-workflows Agent Note. The separate Ralph consumer fixes the script and fresh-provider policy rather than adding another engine or an agent-loop mode.