Add annotated inference metadata companion

Add a comment-rich inference_metadata.annotated.yaml that parses to the same metadata object as the canonical file, and link it from the model card. The canonical inference_metadata.yaml is unchanged. When provenance hashes README.md, refresh that hash and add the annotated-file hash without changing producer/source identity.

README.md

@@ -19,3 +19,9 @@ python3 evidence/probe_sliding_window.py
 cat evidence/sliding_window_runtime_probe.json
 ```
 Requires CUDA-capable `onnxruntime-gpu`, `onnx`, `transformers`, and `numpy`; exact successful versions are in `output.json`.
+
+<!-- inference-metadata-annotation:start -->
+## Annotated inference metadata
+
+Review [`inference_metadata.annotated.yaml`](./inference_metadata.annotated.yaml) for inline explanations of this package's workflow, tensor/state/cache contracts, and fail-closed omissions. [`inference_metadata.yaml`](./inference_metadata.yaml) remains the canonical machine-authored contract; automated validation confirms both files parse to the same metadata object.
+<!-- inference-metadata-annotation:end -->