OmD Lab #01 — archived writer gate

CORE_V2_LEGACY_EXPERIMENT_BLOCKED

The historical Lab #01 playbooks authored retired 9/12-section DESIGN.md files. They remain evidence about an earlier format, not a valid template for new runs. Do not create, update, or normalize a DESIGN.md through those playbooks.

For a new format-impact experiment, preregister arms against DESIGN.md Core v2: model-only, standalone Portable Core, and an adopted Bound System where relevant. Use the same sealed prompt/model/effort/budget and keep full-harness comparisons separate. A new visible document must have a clean top and the exact seven Core anchors, keep unknowns absent, and be useful without OmD or sidecars. Only an adopted profile: portable-core manifest may make its graph canonical.