The plan as an editable artifact

Ablation lab (Module 10, L10.4): a versioned plan with stable ids against chat prose, 20 seeds. The artifact scores 20/20. Prose scores 4/20, delta 16, and those 4 successes are seeds 0, 5, 10 and 15 -- the seeds whose reorder left positions 1 and 2 unchanged. Disguised ids score 4/20. A stale-version edit is rejected 1 time, and applying it anyway lands wrong 1 time. Addressing by ordinal, at read time or at apply time, is the prose score. In-memory plans only; no threads, model or provider call.

This Harness Engineering lesson is part of a paid plan. Sign in with a plan that includes this course to read it.