PN — The artifact is built with Spec-Driven Development, where versioned…
The artifact is built with Spec-Driven Development, where versioned specifications (not code) are the single source of truth; a project constitution fixes non-negotiable rules (mandatory reproducibility, fixed temperature/seed, validated JSON-schema output, passing tests, strict train/eval separation).
Source: PUMA project documentation · Traceability: corpus unit
MEM-027· Confidence: verified-at-primary-source