feat(orchestration): executor exposure + Node parallel/resumable (Workflow Phase 5a)#55
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… 5a) The SDK linchpin + the first SDK grammar. core: AgentSession::agent_executor() returns an AgentExecutor backed by the session (its registry, LLM client, workspace, MCP tools, subagent tracker, parallelism cap) — what the orchestration combinators run against; a host can substitute its own for cross-node placement. AgentSession::session_store() exposes the configured store for the resumable combinator. sdk/node: AgentStepSpecObject / StepOutcomeObject (#[napi(object)], with Option<Value> for output_schema/structured) + From conversions, and Session.parallel(specs) / Session.parallelResumable(specs, workflowId) async methods over the executor. parallelResumable rejects when no sessionStore is configured. Pipeline (callback stages across FFI) and the Python SDK land in follow-up sub-PRs. Conversion unit test green; Node SDK fmt + clippy clean; core + combinators unchanged.
This was referenced May 29, 2026
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First slice of Phase 5 (SDK ergonomics). The SDK linchpin + the first grammar exposed to Node.
What
AgentSession::agent_executor()→ anAgentExecutorbacked by the session (its registry, LLM client, workspace, MCP tools, subagent tracker, parallelism cap). This is what the orchestration combinators run against; a host can substitute its own for cross-node placement.AgentSession::session_store()exposes the store for the resumable combinator.AgentStepSpecObject/StepOutcomeObject(#[napi(object)],Option<Value>foroutput_schema/structured) +Fromconversions;Session.parallel(specs)andSession.parallelResumable(specs, workflowId)async methods.parallelResumablerejects when nosessionStoreis configured.Scope
This is the spec-list grammar (data in/out — no cross-FFI closures). Callback-based
pipelinestages and the Python SDK land in follow-up sub-PRs (per the agreed "full grammar, both SDKs" plan, built incrementally). The callbackpipelineis the part that must carefully honor #32's no-throw/no-panic FFI constraints, so it gets its own focused PR.Verification
cargo fmt --check+cargo clippy --lib -D warningsclean; core + combinators unchanged (their suites already green on main).