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

@@ -134,3 +134,9 @@ Apache-2.0, inherited from
 [Qwen/Qwen2.5-14B-Instruct](https://huggingface.co/Qwen/Qwen2.5-14B-Instruct). This is a quantized
 format conversion of that model; no weights were retrained or otherwise modified beyond
 quantization and the external-data repack described above.
+
+<!-- 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 -->