Reverse-Pass Observer Role

Using the model as observer that describes deviations rather than judge that declares conformance.

After forward-pass convergence, run a reverse pass asking the model to describe deviations with receipts (spec says X, code does Y). Observer framing mitigates suggestible-actor-properties bias toward satisfying the goal; receipt is the value, not yes or no. This surfaces directive-gap-hidden-by-confabulation on M1→M2, complements co-artifact-model, and applies confabulation-is-plausible to evaluation itself. Observation confabulates too, so false positives grow with models and modules.