materializeDesign

Materialise the experimental design alone — no model build, no database, no factor-binding resolution. Useful for previewing the enumerated design points in the GUI (Design tab "Materialize design points…" dialog). Honours the same per-point replications precedence rule as toDesignedExperiment.

Throws if the spec's structural preconditions fail (e.g. CCD with non-2-level factors); the GUI is expected to check prerequisites before calling.