FAR diagnostic artifacts v2
Immutable successor to artifacts-v1. Adds the P11 revision-delta evaluation audit and refreshed frozen diagnostic reports, including the post-hoc Mistral/Gemma/Llama typed-vs-untyped sensitivity analysis. No model calls were made for this refresh; human review, human adjudication, human IAA, publication gold, and external blindness remain unavailable. artifacts-v1 is unchanged.