Named contract
Inputs, outputs and inverse are explicit.
A reversible coder presented like a working note: format, fixtures, failures, measurements and restore contract stay attached to the experiment.
DOE is less about one universal coding trick and more about a development style: expose what was measured, what failed, and what exact inverse closes the experiment.
Useful ideas stay searchable even when they do not become the production path.
If a DOE mechanism survives exactness, speed, memory and size gates, it can be extracted as an independent module instead of being fused into a monolith.
Inputs, outputs and inverse are explicit.
A failed Pareto point is still useful engineering information.
Successful mechanisms can become standalone modules with their own release receipts.