git:20260916.c2ad2ba to git:20260917.c28115c

7 added, 0 removed. Audit A to A.

# External dependencies

- Keep ggml upstream sources unchanged. Never add or apply ggml patches, rewrite

fetched ggml files, or make TensorSharp builds depend on a modified ggml tree.

- Implement behavior that ggml does not provide in TensorSharp-owned code,

including native kernels and backend integration when necessary.

- Validate native changes against an unchanged upstream checkout. Record the

dependency revision, actual test coverage, and benchmark limitations; do not

count skipped or unavailable model/device scenarios as passing validation.

+ # Validation artifacts

+ - Keep generated validation logs, reports, and snapshots in ignored `docs/validation/`

+ or `artifacts/`; do not force-add them to Git.

+ - Store reusable validation tools in `eng/` and required test fixtures in the

+ relevant test project, outside the generated evidence directories.