CBM-019 — Workflow-engine market gate with real graph evidence

[Martin-Hausleitner]

Source: immutable masterplan

Priority: P1
Files: Create benchmarks/orchestration/, comparison report, scripts, and screenshot assets.

• Verify repos, licenses, OSS/open-core boundaries, SDKs, replay/graph features, and self-host requirements for Hatchet, Temporal, Trigger.dev, Restate, Inngest, Prefect, Windmill, Kestra, Dagster, Airflow, Argo, and Dapr.
• Run the same fan-out/fan-in ACPX/browser acceptance workflow on Hatchet and Temporal; add a third candidate only if it beats either on a scored gate.
• Capture real dark/light run, graph, replay, retry, failure, and cancellation screenshots with run IDs.
• Measure idle/load RAM, CPU, disk, startup, latency, retry correctness, worker recovery, and operator usefulness.
• Score local-first/federation/DAO compatibility without calling a centralized database decentralized.
• Commit as docs(benchmark): Compare durable agent workflow engines.

Acceptance: The winner is selected from reproducible evidence rather than the transcript's unverified RAM/timing claims.

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This ticket is part of the dependency-ordered universal control-plane program. Do not weaken its safety exclusions or acceptance gate.

[Martin-Hausleitner]

Preflight research/evidence layer implemented in 1de218b: 12 engines, exactly 20 features scored 0-10 (max 200), deterministic validation, primary links, and license review separated from product blocking. Seven scorer tests pass. This is explicitly not the runtime winner gate; live identical-workflow benchmarks and authenticated graph evidence remain open.

[Martin-Hausleitner]

Final Pareto decision recorded at 562135f: Hatchet is the primary identical-run pilot for local-first/VCVM and low-ops fit; Temporal is the durability reference/fallback; Restate enters only if it beats one pilot on measured footprint or recovery. This is not a production-winner claim. The same ACPX + Browser Use workflow, inputs, limits, cancellation and evidence gates must run on each candidate with real dashboard/run screenshots. Correction: current Hatchet upstream license is MIT; the imported Grok export incorrectly labeled it Apache-2.0.