Hermetic Golden Cases: Your Agent Suite Is Lying to You
A golden suite whose cases share state reports whatever the accident of execution order produces. How per-case hermetic users fixed a lying pass rate — and made parallelism free.
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Notes on making probabilistic systems shippable: evaluation harnesses, LLM judges, context engineering, agents, and the GCP estate underneath them. Everything here comes from production systems — method extracted from work, written to be reused.
Related: the case study on evaluation gates for a 700,000-student agent system, the GCP dossier, and the working papers on agent harnesses and structural waste.