G.0:1 - Problem frame
A team defines or evolves a CG‑Frame (e.g., a frame for creativity measurement, decision quality, architecture trade‑offs, or selected-set publication). Downstream comparison, aggregation, and publication of CHR‑typed observations (G.1–G.5 and beyond) must be:
- lawful with respect to measurement admissibility (scale/unit/polarity constraints),
- auditable with explicit evidence minima and provenance,
- reproducible via pinned editions and explicit policy ids,
- portable only via explicit crossings (bridges and reference-plane moves), never via implicit semantic leakage.
CG‑Spec is the single design-time object that fixes what comparisons and aggregations are lawful in this frame, under which pinned assumptions and minimal evidence requirements, so that run-time selection and publication can be audited without inventing new “local legality gates”.
Didactic subtitle: Design-time rules for safe, auditable comparison.